Shape memory polymers: Properties, synthesis and applications

Smart Polymers and their Applications

Volumn , Issue , 2014, Pages 204-236

  Peponi, L ^a   Navarro Baena, I ^a,b   Kenny, J M ^a,b  

^a INSTITUTO DE CIENCIA Y TECNOLOGÍA DE POLÍMEROS   (Spain)

^b UNIVERSITY OF PERUGIA   (Italy)

Author keywords

Biomedical applications; External stimuli activation; Shape memory materials; Shape memory polymers

Indexed keywords

BIOCOMPATIBILITY; CERAMIC MATERIALS; FUNCTIONAL POLYMERS; MEDICAL APPLICATIONS; SHAPE MEMORY EFFECT;

BIOMEDICAL APPLICATIONS; DRIVING CURRENT; EXTERNAL STIMULUS; PROCESSABILITY; RESEARCH TRENDS; SHAPE MEMORY; SHAPE MEMORY POLYMERS; SHAPE-MEMORY MATERIALS;

POLYMERS;

EID: 84903224130     PISSN: None     EISSN: None     Source Type: Book    
DOI: 10.1533/9780857097026.1.204     Document Type: Chapter

References (135)

1. Ahir S.V., Terentjev E.M. Photomechanical actuation in polymer nano-tube composites. Nature Materials 2005, 4(6):491-495.
2. Ahn S.K., Kasi R.M., Kim S.C., Sharma N., Zhou Y. Stimuli-responsive polymer gels. Soft Matter 2008, 4(6):1151-1157.
3. Arzberger S.C., Tupper M.L., Lake M.S., Barrett R., Mallick K., Hazelton C., Francis W., Keller P.N., Campbell D., Feucht S., Codell D., Wintergerst J., Adams L., Mallioux J., Denis R., White K., Long M., Munshi N.A. Elastic Memory Composites (EMC) for deployable industrial and commercial applications. Smart Structures and Materials 2005: Industrial and Commercial Applications of Smart Structures Technologies 2005, 5762:35-47.
4. Behl M., Ridder U., Feng Y., Kelch S., Lendlein A. Shape-memory capability of binary multiblock copolymer blends with hard and switching domains provided by different components. Soft Matter 2009, 5(3):676-684.
5. Behl M., Razzaq M.Y., Lendlein A. Multifunctional shape-memory polymers. Advanced Materials 2010, 22(31):3388-3410.
6. Bigelow G.S., Padula S.A., Garg A., Gaydosh D., Noebe R.D. Characterization of ternary NiTiPd high-temperature shape-memory alloys under load-biased thermal cycling. Metallurgical and Materials Transactions a-Physical Metallurgy and Materials Science 2010, 41A(12):3065-3079.
7. Buehler W.J., Wiley R.C., Gilfrich J.V. Effect of low-temperature phase changes on mechanical properties of alloys near composition TiNi. Journal of Applied Physics 1963, 34(5):1475-1477.
8. Burke K.A., Mather P.T. Soft shape memory in main-chain liquid crystalline elastomers. Journal of Materials Chemistry 2010, 20(17):3449-3457.
9. Cao Q., Liu P.S. Structure and mechanical properties of shape memory polyurethane based on hyperbranched polyesters. Polymer Bulletin 2006, 57(6):889-899.
10. Chang C.Y., Vokoun D., Hu C.T. Two-way shape memory effect of NiTi alloy induced by constraint aging treatment at room temperature. Metallurgical and Materials Transactions a-Physical Metallurgy and Materials Science 2001, 32(7):1629-1634.
11. Chang L.C., Read T.A. Plastic deformation and diffusionless phase changes in metals - the gold-cadmium beta-phase. Transactions of the American Institute of Mining and Metallurgical Engineers 1951, 191(1):47-52.
12. Chau E.T.F., Friend C.M., Allen D.M., Hora J., Webster J.R. A technical and economic appraisal of shape memory alloys for aerospace applications. Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing 2006, 438:589-592.
13. Chen S., Hu J., Zhuo H., Zhu Y. Two-way shape memory effect in polymer laminates. Materials Letters 2008, 62(25):4088-4090.
14. Chen S.J., Hu J.L., Zhuo H.T. Properties and mechanism of two-way shape memory polyurethane composites. Composites Science and Technology 2010, 70(10):1437-1443.
15. Chen X.H., Wang J., Zou J., Wu X., Chen X., Xue F. Mechanical and thermal properties of functionalized multiwalled carbon nanotubes and multi-walled carbon nanotube-polyurethane composites. Journal of Applied Polymer Science 2009, 114(6):3407-3413.
16. Cho J.W., Kim J.W., Jung Y.C., Goo N.S. Electroactive shape-memory polyurethane composites incorporating carbon nanotubes. Macromolecular Rapid Communications 2005, 26(5):412-416.
17. Cho J.W., Jung Y.C., Chung Y.C., Chun B.C. Improved mechanical properties of shape-memory polyurethane block copolymers through the control of the soft-segment arrangement. Journal of Applied Polymer Science 2004, 93(5):2410-2415.
18. Choi N.Y., Lendlein A. Degradable shape-memory polymer networks from oligo (L-lactide)-ran-glycolide dimethacrylates. Soft Matter 2007, 3(7):901-909.
19. Choi N.Y., Kelch S., Lendlein A. Synthesis, shape-memory functionality and hydrolytical degradation studies on polymer networks from poly(rac-lac-tide)b-poly(propylene oxide)-b-poly(rac-lactide) dimethacrylates. Advanced Engineering Materials 2006, 8(5):439-445.
20. Colic M., Rudolf R., Stamenkovic D., Anzel I., Vucevic D., Jenko M., Lazic V., Lojen G. Relationship between microstructure, cytotoxicity and corrosion properties of a Cu-Al-Ni shape memory alloy. Acta Biomaterialia 2010, 6(1):308-317.
21. Du H.Y., Zhang J.H. Solvent induced shape recovery of shape memory polymer based on chemically cross-linked poly(vinyl alcohol). Soft Matter 2010, 6(14):3370-3376.
22. Fuhrer R., Athanassiou E.K., Luechinger N.A., Stark W.J. Crosslinking metal nanoparticles into the polymer backbone of hydrogels enables preparation of soft, magnetic field-driven actuators with muscle-like flexibility. Small 2009, 5(3):383-388.
23. Gall K., Mikulas M., Munshi N.A., Beavers F., Tupper M. Carbon fiber reinforced shape memory polymer composites. Journal of Intelligent Material Systems and Structures 2000, 11(11):877-886.
24. Gall K., Dunn M.L., Liu Y., Finch D., Lake M., Munshi N.A. Shape memory polymer nanocomposites. Acta Materialia 2002, 50(20):5115-5126.
25. Gall K., Kreiner P., Turner D., Hulse M. Shape-memory polymers for microelectromechanical systems. Journal of Microelectromechanical Systems 2004, 13(3):472-483.
26. Gil E.S., Hudson S.M. Stimuli-responsive polymers and their bioconju-gates. Progress in Polymer Science 2004, 29(12):1173-1222.
27. Gil F.J., Solano E., Engel E., Mendoza A., Planell J.A. Microstructural, mechanical and cytotoxicity evaluation of different NiTi and NiTiCu shape memory alloys. Journal of Materials Science-Materials in Medicine 2004, 15(11):1181-1185.
28. Gunes I.S., Jimenez G.A., Jana S.C. Carbonaceous fillers for shape memory actuation of polyurethane composites by resistive heating. Carbon 2009, 47(4):981-997.
29. Han S.I., Gu B.H., Nam K.H., Im S.J., Kim S.C., Im S.S. Novel copolyester-based ionomer for a shape-memory biodegradable material. Polymer 2007, 48(7):1830-1834.
30. Hane K.F., Shield T.W. Microstructure in a copper-aluminium-nickel shape-memory alloy. Proceedings of the Royal Society a-Mathematical Physical and Engineering Sciences 1999, 455(1991):3901-3915.
31. 9 wide hysteresis shape memory alloy. Scripta Materialia 2005, 53(12):1411-1415.
32. Helminen A.O., Korhonen H., Seppala J.V. Cross-linked poly(epsilon-caprolactone/D, L-lactide) copolymers with elastic properties. Macromolecular Chemistry and Physics 2002, 203(18):2630-2639.
33. Heuer A.H., Ruhle M., Marshall D.B. On the thermoelastic martensitic-transformation in tetragonal zirconia. Journal of the American Ceramic Society 1990, 73(4):1084-1093.
34. Hirai T., Matuyama H., Suzuki T., Hayashi S. Effect of chemical cross-linking under elongation on shape restoring of poly(vinyl alcohol) hydrogel. Journal of Applied Polymer Science 1992, 46(8):1449-1451.
35. Hirai T., Matuyama H., Suzuki T., Hayashi S. Shape memorizing properties of a hydrogel of poly(vinyl alcohol). Journal of Applied Polymer Science 1992, 45(10):1849-1855.
36. Hornbogen E. Comparison of shape memory metals and polymers. Advanced Engineering Materials 2006, 8(1-2):101-106.
37. Huang W.M., Yang B., Zhao Y., Ding Z. Thermo-moisture responsive polyurethane shape-memory polymer and composites: a review. Journal of Materials Chemistry 2010, 20(17):3367-3381.
38. Ikeda T., Nakano M., Yu Y., Tsutsumi O., Kanazawa A. Anisotropic bending and unbending behavior of azobenzene liquid-crystalline gels by light exposure. Advanced Materials 2003, 15(3):201-205.
39. Irie M., Kunwatchakun D. Photoresponsive polymers.8. Reversible pho-tostimulated dilation of polyacrylamide gels having triphenylmethane leuco derivatives. Macromolecules 1986, 19(10):2476-2480.
40. Jagur-Grodzinski J. Polymeric gels and hydrogels for biomedical and pharmaceutical applications. Polymers for Advanced Technologies 2010, 21(1):27-47.
41. Jeong H.M., Ahn B.K., Kim B.K. Miscibility and shape memory effect of thermoplastic polyurethane blends with phenoxy resin. European Polymer Journal 2001, 37(11):2245-2252.
42. Jeong H.M., Kim B.K., Choi Y.J. Synthesis and properties of thermotropic liquid crystalline polyurethane elastomers. Polymer 2000, 41(5):1849-1855.
43. Jeong H.M., Song J.H. Miscibility and shape memory property of poly(vinyl chloride)/thermoplastic polyurethane blends. Journal of Materials Science 2001, 36(22):5457-5463.
44. Jeong H.M., Lee J.B., Lee S.Y., Kim B.K. Shape memory polyurethane containing mesogenic moiety. Journal of Materials Science 2000, 35(2):279-283.
45. Jiang H.Y., Kelch S., Lendlein A. Polymers move in response to light. Advanced Materials 2006, 18(11):1471-1475.
46. Jung Y.C., Kim H.H., Kim Y.A., Kim J.H., Cho J.W., Endo M., Dresselhaus M.S. Optically active multi-walled carbon nanotubes for transparent, conductive memory-shape polyurethane film. Macromolecules 2010, 43(14):6106-6112.
47. Kagami Y., Gong J.P., Osada Y. Shape memory behaviors of cross-linked copolymers containing stearyl acrylate. Macromolecular Rapid Communications 1996, 17(8):539-543.
48. Karp J.M., Langer R. Development and therapeutic applications of advanced biomaterials. Current Opinion in Biotechnology 2007, 18(5):454-459.
49. Kelch S., Steuer S., Schmidt A.M., Lendlein A. Shape-memory polymer networks from oligo (epsilon-hydroxycaproate)-co-glycolate dimethacrylates and butyl acrylate with adjustable hydrolytic degradation rate. Biomacromolecules 2007, 8(3):1018-1027.
50. Kim B.K., Lee S.Y., Lee J.S., Baek S.H., Choi Y.J., Lee J.O., Xu M. Polyurethane ionomers having shape memory effects. Polymer 1998, 39(13):2803-2808.
51. Kim J.H., Kang T.J., Yu W.R. Simulation of mechanical behavior of temperature-responsive braided stents made of shape memory polyurethanes. Journal of Biomechanics 2010, 43(4):632-643.
52. Knight P.T., Lee K.M., Chung T., Mather P.T. PLGA-POSS end-linked networks with tailored degradation and shape memory behavior. Macromolecules 2009, 42(17):6596-6605.
53. Koerner H., Price G., Pearce N.A., Alexander M., Vaia R.A. Remotely actuated polymer nanocomposites - stress-recovery of carbon-nanotube-filled thermoplastic elastomers. Nature Materials 2004, 3(2):115-120.
54. Lee Y.M., Kim S.H., Cho C.S. Synthesis and swelling characteristics of pH and thermoresponsive interpenetrating polymer network hydrogel composed of poly(vinyl alcohol) and poly(acrylic acid). Journal of Applied Polymer Science 1996, 62(2):301-311.
55. Lendlein A., Langer R. Biodegradable, elastic shape-memory polymers for potential biomedical applications. Science 2002, 296(5573):1673-1676.
56. Lendlein A., Kelch S. Shape-memory polymers. Angewandte Chemie-International Edition 2002, 41(12):2034-2057.
57. Lendlein A., Canisius J., Schulte J., Kratz K. Shape memory polymers as stimuli-sensitive implant materials for medical applications 2004, 563-572. A.R. Pelton, T. Duerig (Eds.).
58. Lendlein A., Jiang H., Jünger O., Langer R. Light-induced shape-memory polymers. Nature 2005, 434(7035):879-882.
59. Lendlein A., Schmidt A.M., Langer R. AB-polymer networks based on oligo(epsilon-caprolactone) segments showing shape-memory properties. Proceedings of the National Academy of Sciences of the United States of America 2001, 98(3):842-847.
60. Lendlein A., Schimdt A.M., Schroeter M., Langer R. Shape-memory polymer networks from oligo(epsilon-caprolactone)dimethacrylates. Journal of Polymer Science Part a-Polymer Chemistry 2005, 43(7):1369-1381.
61. Lendlein A., Zotzmann J., Feng Y., Altheld A., Kelch S. Controlling the switching temperature of biodegradable, amorphous, shape-memory poly(rac-lactide)urethane networks by incorporation of different comonomers. Biomacromolecules 2009, 10(4):975-982.
62. Leng J.S., Lv H., Liu Y., Du S. Electroactivate shape-memory polymer filled with nanocarbon particles and short carbon fibers. Applied Physics Letters 2007, 91:1441051-1441053.
63. Li F.K., Zhu W., Zhang X., Zhao C., Xu M. Shape memory effect of ethylene-vinyl acetate copolymers. Journal of Applied Polymer Science 1999, 71(7):1063-1070.
64. Li J.Y., Rogan R.C., Üstündag E., Bhattacharya K. Domain switching in polycrystalline ferroelectric ceramics. Nature Materials 2005, 4(10):776-781.
65. Li Y., Hu Z.B., Chen Y.Y. Shape memory gels made by the modulated gel technology. Journal of Applied Polymer Science 1997, 63(9):1173-1178.
66. Liu C.D., Chun S.B., Mather P.T. Chemically cross-linked polycyclooctene: Synthesis, characterization, and shape memory behavior. Macromolecules 2002, 35(27):9868-9874.
67. Liu C., Qin H. Mather, Review of progress in shape-memory polymers. Journal of Materials Chemistry 2007, 17(16):1543-1558.
68. Liu G.Q., Ding X., Cao Y., Zheng Z., Peng Y. Novel shape-memory polymer with two transition temperatures. Macromolecular Rapid Communications 2005, 26(8):649-652.
69. Liu G.Q., Guan C.L., Xia H., Guo F., Ding X., Peng Y. Novel shape-memory polymer based on hydrogen bonding. Macromolecular Rapid Communications 2006, 27(14):1100-1104.
70. Liu L.L., Cai W. Novel copolyester for a shape-memory biodegradable material in vivo. Materials Letters 2009, 63(20):1656-1658.
71. Liu Y.J., Lv H., Lan X., Leng J., Du S. Review of electro-active shape-memory polymer composite. Composites Science and Technology 2009, 69(13):2064-2068.
72. Loughlan J., Thompson S.P., Smith H. Buckling control using embedded shape memory actuators and the utilisation of smart technology in future aerospace platforms. Composite Structures 2002, 58(3):319-347.
73. Lu X.L., Cai W., Gao Z., Tang W.J. Shape memory effects of poly(L-lactide) and its copolymer with poly(epsilon-caprolactone). Polymer Bulletin 2007, 58(2):381-391.
74. Lu X.L., Sun Z.J., Cai W., Gao Z.Y. Study on the shape memory effects of poly(L-lactide-co-epsilon-caprolactone) biodegradable polymers. Journal of Materials Science-Materials in Medicine 2008, 19(1):395-399.
75. Luo H.Y., Liu Y., Yu Z., Zhang S., Li B. Novel biodegradable shape memory material based on partial inclusion complex formation between alpha-cyclodextrin and poly(epsilon-caprolactone). Biomacromolecules 2008, 9(10):2573-2577.
76. Luo X.L., Zhao M.C., Wang M.Z., Ding L.N., Ma D.Z. Thermally stimulated shape memory behavior of (ethylene oxide-butylene terephthalate) segmented copolymer. Chinese Journal of Polymer Science 2000, 18(4):357-361.
77. Maitland D.J., Metzger M.F., Schumann D., Lee A., Wilson T.S. Photothermal properties of shape memory polymer micro-actuators for treating stroke. Lasers in Surgery and Medicine 2002, 30(1):1-11.
78. Markland P., Zhang Y., Amidon G.L., Yang V.C. A pH- and ionic strength-responsive polypeptide hydrogel: Synthesis, characterization, and preliminary protein release studies. Journal of Biomedical Materials Research 1999, 47(4):595-602.
79. Meng Q.H., Hu J.L. A review of shape memory polymer composites and blends. Composites Part a-Applied Science and Manufacturing 2009, 40(11):1661-1672.
80. Meng Q.H., Hu J., Ho K.C., Ji F., Chen S. The shape memory properties of biodegradable chitosan/poly(l-lactide) composites. Journal of Polymers and the Environment 2009, 17(3):212-224.
81. Metzger M.F., Wilson T.S., Schumann D., Matthews D.L., Maitland D.J. Mechanical properties of mechanical actuator for treating ischemic stroke. Biomedical Microdevices 2002, 4(2):89-96.
82. Migneco F., Huang Y.C., Birla R.K., Hollister S.J. Poly(glycerol-dodecanoate), a biodegradable polyester for medical devices and tissue engineering scaffolds. Biomaterials 2009, 30(33):6479-6484.
83. Min C.C., Cui W., Bei J., Wang S. Biodegradable shape-memory polymer-polylactideco-poly(glycolide-co-caprolactone) multiblock copolymer. Polymers for Advanced Technologies 2005, 16(8):608-615.
84. Mohr R., Kratz K., Weigel T., Lucka-Gabor M., Moneke M., Lendlein A. Initiation of shape-memory effect by inductive heating of magnetic nano-particles in thermoplastic polymers. Proceedings of the National Academy of Sciences of the United States of America 2006, 103(10):3540-3545.
85. Monkman G.J. Advances in shape memory polymer actuation. Mechatronics 2000, 10(4-5):489-498.
86. Morshedian J., Khonakdar H.A., Mehrabzadeh M., Eslami H. Preparation and properties of heat-shrinkable cross-linked low-density polyethylene. Advances in Polymer Technology 2003, 22(2):112-119.
87. Nagahama K., Ueda Y., Ouchi T., Ohya Y. Biodegradable shape-memory polymers exhibiting sharp thermal transitions and controlled drug release. Biomacromolecules 2009, 10(7):1789-1794.
88. Nagata M., Kitazima I. Photocurable biodegradable poly(epsilon-capro-lactone)/poly(ethylene glycol) multiblock copolymers showing shape-memory properties. Colloid and Polymer Science 2006, 284(4):380-386.
89. Nagata M., Yamamoto Y. Synthesis and characterization of photocross-linked poly(epsilon-caprolactone)s showing shape-memory properties. Journal of Polymer Science Part a-Polymer Chemistry 2009, 47(9):2422-2433.
90. Nagata M., Yamamoto Y. Photocurable shape-memory copolymers of epsilon-caprolactone and l-lactide. Macromolecular Chemistry and Physics 2010, 211(16):1826-1835.
91. Nair D.P., Cramer N.B., Scott T.F., Bowman C.N., Shandas R. Photopolymerized thiol-ene systems as shape memory polymers. Polymer 2010, 51(19):4383-4389.
92. Neuss S., Blomenkamp I., Stainforth R., Blotersdorf D., Jansen M., Butz N., Perez-Bouza A., Knüchel R. The use of a shape-memory poly(e-caprolactone) dimethacrylate network as a tissue engineering scaffold. Biomaterials 2009, 30(9):1697-1705.
93. Nji J., Li G.Q. A biomimic shape memory polymer based self-healing particulate composite. Polymer 2010, 51(25):6021-6029.
94. Osada Y., Gong J.P. Soft and wet materials: Polymer gels. Advanced Materials 1998, 10(11):827-837.
95. Osada Y., Matsuda A. Shape-memory in hydrogels. Nature 1995, 376(6537):219.
96. Ota S. Current status of irradiated heat-shrinkable tubing in Japan. Radiation Physics and Chemistry 1981, 18(1-2):81-87.
97. Peng T., Gibula P., Yao K.D., Goosan M.F.A. Role of polymers in improving the results of stenting in coronary arteries. Biomaterials 1996, 17(7):685-694.
98. Rainer W.C., Redding E.M., Hitov J.J., Sloan A.W., Steward W.D. Heat-shrinkable polyethylene 1964, US Patent, 3144398, Editor.
99. Rossi S., Deflorian F., Pegoretti A., D'Orazio D., Gialanella S. Chemical and mechanical treatments to improve the surface properties of shape memory NiTi wires. Surface & Coatings Technology 2008, 202(10):2214-2222.
100. Schmidt A.M. Electromagnetic activation of shape memory polymer networks containing magnetic nanoparticles. Macromolecular Rapid Communications 2006, 27(14):1168-1172.
101. Schoener C.A., Weyand C.B., Murthy R., Grunlan M.A. Shape memory polymers with silicon-containing segments. Journal of Materials Chemistry 2010, 20(9):1787-1793.
102. Schurch K.E., Ashbee K.H.G. Near perfect shape-memory ceramic material. Nature 1977, 266(5604):706-707.
103. Small W., Wilson T., Benett W., Loge J., Maitland D. Laser-activated shape memory polymer intravascular thrombectomy device. Optics Express 2005, 13(20):8204-8213.
104. Song L.W.Hu., Wang G., Niu G., Zhang H., Cao H., Wang K., Yang H., Zhu S. Tailored (meth)acrylate shape-memory polymer networks for ophthalmic applications. Macromolecular Bioscience 2010, 10(10):1194-1202.
105. Song L., Hu W., Zhang H., Wang G., Yang H., Zhu S. In vitro evaluation of chemically cross-linked shape-memory acrylate-methacrylate copolymer networks as ocular implants. Journal of Physical Chemistry B 2010, 114(21):7172-7178.
106. Takashima K., Rossiter J., Mukai T. McKibben artificial muscle using shape-memory polymer. Sensors and Actuators a-Physical 2010, 164(1-2):116-124.
107. Tamai H., Igaki K., Kyo E., Kosuga K., Kawashima A., Matsui S., Komori H., Tsuji T., Motohara S., Uehata H. Initial and 6-month results of biodegradable poly-l-lactic acid coronary stents in humans. Circulation 2000, 102(4):399-404.
108. Thomsen D.L., Keller P., Naciri J., Pink R., Jeon H., Shenoy D., Ratna B.R. Liquid crystal elastomers with mechanical properties of a muscle. Macromolecules 2001, 34(17):5868-5875.
109. Vaia R. Nanocomposites - Remote-controlled actuators. Nature Materials 2005, 4(6):429-430.
110. Van Humbeeck J. Non-medical applications of shape memory alloys. Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing 1999, 273:134-148.
111. Wada K., Liu Y. On the two-way shape memory behavior in NiTi alloy - An experimental analysis. Acta Materialia 2008, 56(13):3266-3277.
112. Wang W.S., Ping P., Chen X., Jing X. Polylactide-based polyurethane and its shape-memory behavior. European Polymer Journal 2006, 42(6):1240-1249.
113. Wang Y.N., Shen H.M., Zhu M. Shape memory effect due to a phaselike transition in high-tc superconductors. Physics Letters A 1991, 158(8):413-416.
114. Wei Z.G., Sandstrom R., Miyazaki S. Shape-memory materials and hybrid composites for smart systems - Part I Shape-memory materials. Journal of Materials Science 1998, 33(15):3743-3762.
115. Wischke C., Lendlein A. Shape-memory polymers as drug carriers-a multifunctional system. Pharmaceutical Research 2010, 27(4):527-529.
116. Wischke C., Neffe A.T., Steuer S., Engelhardt E., Lendlein A. AB-polymer networks with cooligoester and poly(n-butyl acrylate) segments as a multifunctional matrix for controlled drug release. Macromolecular Bioscience 2010, 10(9):1063-1072.
117. Wischke C., Neffe A.T., Steuer S., Lendlein A. Evaluation of a degradable shape-memory polymer network as matrix for controlled drug release. Journal of Controlled Release 2009, 138(3):243-250.
118. Wong Y.S., Venkatraman S.S. Recovery as a measure of oriented crystalline structure in poly(L-lactide) used as shape memory polymer. Acta Materialia 2010, 58(1):49-58.
119. Wong Y.S., Xiong Y., Venkatraman S.S., Boey F.Y. Shape memory in un-cross-linked biodegradable polymers. Journal of Biomaterials Science-Polymer Edition 2008, 19(2):175-191.
120. Xie T. Tunable polymer multi-shape memory effect. Nature 2010, 464(7286):267-270.
121. Xue L.A., Dai S.Y., Li Z. Biodegradable shape-memory block co-polymers for fast self-expandable stents. Biomaterials 2010, 31(32):8132-8140.
122. Yang B., Huang W.M., Li C., Lee C.M., Li L. On the effects of moisture in a polyurethane shape memory polymer. Smart Materials & Structures 2004, 13(1):191-195.
123. Yu X.J., Zhou S., Zheng X., Xiao Y., Guo T. Influence of in vitro degradation of a biodegradable nanocomposite on its shape memory effect. Journal of Physical Chemistry C 2009, 113(41):17630-17635.
124. Yu Y.L., Ikeda T. Photodeformable polymers: A new kind of promising smart material for micro- and nano-applications. Macromolecular Chemistry and Physics 2005, 206(17):1705-1708.
125. Zeng M., Or S.W., Chan H.L.W. Magnetic field-induced strain and magnetoelectric effects in sandwich composite of ferromagnetic shape memory Ni-Mn-Ga crystal and piezoelectric PVDF polymer. IEEE Transactions on Ultrasonics Ferroelectrics and Frequency Control 2010, 57(10):2147-2153.
126. Zhang H., Wang H., Zhong W., Du Q. A novel type of shape memory polymer blend and the shape memory mechanism. Polymer 2009, 50(6):1596-1601.
127. Zhang S.F., Feng Y., Zhang L., Sun J., Xu X., Xu Y. Novel interpenetrating networks with shape-memory properties. Journal of Polymer Science Part a-Polymer Chemistry 2007, 45(5):768-775.
128. Zheng X.T., Zhou S., Yu X., Li X., Feng B., Qu S., Weng J. Effect of in vitro degradation of poly(D, L-lactide)/beta-tricalcium composite on its shape-memory properties. Journal of Biomedical Materials Research Part B-Applied Biomaterials 2008, 86B(1):170-180.
129. Zheng X.T., Zhou S., Xiao Y., Yu X., Li X., Wu P. Shape memory effect of poly(D, L-lactide)/Fe3O4 nanocomposites by inductive heating of magnetite particles. Colloids and Surfaces B-Biointerfaces 2009, 71(1):67-72.
130. Zheng X.T., Zhou S.B., Li X., Weng J. Shape memory properties of poly(D, L-lactide)/hydroxyapatite composites. Biomaterials 2006, 27(24):4288-4295.
131. Zhou S.B., Zheng X., Yu X., Wang J., Weng J., Li X., Feng B., Yin M. Hydrogen bonding interaction of poly(D, L-lactide)/hydroxyapatite nanocom-posites. Chemistry of Materials 2007, 19(2):247-253.
132. Zhu G., Liang G., Xu Q., Yu Q. Shape-memory effects of radiation cross-linked poly(epsilon-caprolactone). Journal of Applied Polymer Science 2003, 90(6):1589-1595.
133. Zhu Y., Hu J.L., Yeung K.W., Liu Y.Q., Liem H.M. Influence of ionic groups on the crystallization and melting behavior of segmented polyurethane ionomers. Journal of Applied Polymer Science 2006, 100(6):4603-4613.
134. Zhu Y., Hu J., Choi K.-F., Meng Q., Chen S., Yeung K.-W. Shape memory effect and reversible phase crystallization process in SMPU ionomer. Polymers for Advanced Technologies 2008, 19(4):328-333.
135. Zini E., Scandola M., Dobrzynski P., Kasperczyk J., Bero M. Shape memory behavior of novel (L-Lactide- glycol ide-trimethylene carbonate) terpolymers. Biomacromolecules 2007, 8(11):3661-3667.