Liquid crystalline polymers XI. Main chain thermotropic poly (arylidene-ether)s containing 4-methyl-cyclohexanone moiety linked with polymethylene spacers

Liquid Crystals

Volumn 40, Issue 6, 2013, Pages 711-725

  Aly, Kamal I ^a   Elkhawaga, Ahmed M ^a   Hussein, Mahmoud A ^a   Sayed, Marwa M ^a  

^a Assiut University   (Egypt)

Author keywords

characterisation; liquid crystal; poly(arylidene ether)s; synthesis; thermotropic

Indexed keywords

EID: 84877799598     PISSN: 02678292     EISSN: 13665855     Source Type: Journal    
DOI: 10.1080/02678292.2013.789934     Document Type: Article

References (40)

1. Janneli, P, Roviello, A and Sirigu, A. 1982. Liquid crystal behavior of linear copolymers I. Eur Polym J., 18: 745 - 751.
2. Sek, D. 1984. Liquid crystalline properties of new poly (azomethine esters). Eur Polym J., 20: 923 - 926.
3. Greiner, A, Schmidt, H-W., Demus, D, Goodby, J, Gray, GW, Spiess, HW and Vill, V, eds. 1998. Handbook of liquid crystals, Vol. 3, 3 - 25. Weinheim: Wiley-VCH. Aromatic main chain liquid crystalline polymers
4. Chiellini, E, Laus M. 1998. Handbook of liquid crystals, Edited by: Demus, D, Goodby, J, Gray, GW, Spiess, H-W and Vill, V. Vol. 3, 26 - 51. Weinheim: Wiley-VCH. Main chain liquid crystalline semiflexible polymers
5. Bello, A, Riande, E, Pérez, E, Marugán, MM and Perena, JM. 1993. Influence of the spacer on the thermotropic and conformational properties of poly[oxybis(trimethylene) p,p'-bibenzoate] and poly(heptamethylene p,p'-bibenzoate. Macromolecules., 26: 1072 - 1077.
6. Ge, JJ, Zhang, A, McCreight, KW, Wang, S-Y, Harris, FW and Cheng, SZD. 1998. Phase structures, transition behaviors, and surface alignment in polymers containing a rigid rodlike backbone with flexible side chains. 2. Phase transition kinetics in a main-chain/side-chain liquid crystalline polyester. Macromolecules., 31: 4093 - 4101.
7. Ge, JJ, Honigfort, PS, Ho, R-M, Wang, S-Y, Harris, FW and Cheng, SZD. 1999. Phase structures, transition behavior and surface alignment in polymers containing rigid rod-like backbones with flexible side chains, 3. The even-odd effect on phase transitions in combined liquid crystal polyesters. Macromol Chem Phys., 200: 31 - 43.
8. Ge, JJ, Guo, M, Zhang, Z, Honigfort, PS, Wang, S-Y and Harris, FW. 2000. Phase structures, transition behavior, and surface alignment in polymers containing rigid-rod backbones with flexible side chains. 4. Solid-state 13C NMR studies of molecular motions in PEFBPs(n) (n = 10 and 11). Macromolecules., 33: 3983 - 3992. Cheng SZ
9. Hu, YS, Liu, RYF, Schiraldi, DA, Hiltner, A and Solid-State, BE. 2004. Structure of copolyesters containing a mesogenic monomer. Macromolecules., 37: 2128 - 2135.
10. Watanabe, J, Hayashi, M, Morita, A and Tokita, M. 1995. Thermotropic liquid crystals of main-chain polyesters having a mesogenic 4,4'-biphenyldicarboxylate unit. 6. Chiral mesophases of polyesters with a (s)-2-methylbutylene spacer. Macromolecules., 28: 8073 - 8079.
11. Picken, SJ, Sikkema, DJ Boerstoel, H. 1605. Liquid crystal main-chain polymers for high-performance fibre applications. Liq Cryst., 2011 (38:1591)
12. Hammers, MD, Wichman, JJ and Wiegel, KN. 2011. Supramolecular main-chain liquid crystalline polymers and networks with competitive hydrogen bonding: a study of increased flexibility on distonic mesogenic hydrogen bond acceptors with networks created from tetrakis-, tris- and bis-functionalised pyridyl networking agents. Liq Cryst., 38: 581 - 587.
13. Iwan, A and Wlodarska, M. 2012. Dielectric spectroscopy of polyazomethine with vinylene moieties in the main chain. Liq Cryst., 39: 545 - 550.
14. Imrie, CT, Henderson, PA and Yeap, G-Y. 2009. Liquid crystal oligomers: going beyond dimers. Liq Cryst., 36: 755 - 777.
15. Hussein, MA, Abdel-Rahman, MA, Asiri, AM, Alamry, KA and Aly, KI. 2012. Review on: liquid crystalline polyazomethines polymers. Basics, syntheses and characterization. Design Mono Polym., 15: 431 - 463.
16. Hammam, AS, Aly, KI, Radwan, SM and AbdelRahman, MA. 2007. Liquid crystalline polymers VIII. Thermotropic liquid crystalline poly (hydrazone-ether)s containing bis-thiophene linked to the main chain through spacers of various lengths. J Sulp Chem., 28: 547 - 561.
17. Aly, KI, Abbady, MA, Mahgoub, SA and Hussein, MA. 2007. Liquid crystalline polymers IX. Main chain thermotropic poly (azomethine - ether)s containing thiazole moiety linked with polymethylene spacers. eXPRESS Polym Lett., 1: 197 - 207.
18. Aly, KI, Khalaf, AA and Mohammed, IA. 2003. Liquid crystalline polymers VII. Thermotropic liquid crystalline poly(azomethine-ether)s containing dibenzylidene derivatives in the main chain. Eur Polym J., 39: 1035 - 1044.
19. Aly, KI and El-Kashef, HS. 2001. Liquid crystalline polymers 4. Thermotropic liquid crystalline poly(arylidene - ether)s and copolymers containing n-methylpiperidone linked to the main chain through spacers of various length. J Macro Sci Chem A., 38: 785 - 806.
20. Aly, KI and Hammam, AS. 2000. Liquid crystalline polymers 1. Main chain thermotropic poly(arylidene-ether)s containing cyclopentanone moiety linked with polymethylene spacers. Eur Polym J., 36: 1933 - 1942.
21. Aly, KI. 2000. Liquid crystalline polymers 3. Synthesis and liquid crystal properties of thermotropic poly(arylidene-ether)s and copolymers containing cycloalkanones moiety in the polymer backbone. J Macro Sci Chem A., 37: 93 - 115.
22. Aly, KI and Ahmed, RA. 2000. Liquid crystalline polymers 5. Thermotropic liquid crystalline poly(azomethine-ether)s containing cycloalkanone moiety in the polymer backbone. Liq Cryst., 27: 451 - 458.
23. Aly, KI. 1999. Liquid crystalline polymers 2. Synthesis and thermotropic studies of novel poly(arylidene-ether)s. Containing cyclopentanone moiety in the main chain. High Perform Polym., 11: 437 - 452.
24. Perrin, DD and Armarigo, WLF. 1988. Purification of laboratory chemicals, 3rd, New York: Pergamon press.
25. Date, RW, Imrie, CT and Luckhurst, GR. 1992. Smectogenic dimeric liquid crystals - the preparation and properties of the alpha, omega-bis (4-normal-alkylanilinebenzylidene-4'-oxy) alknes. Liq Cryst., 12: 203 - 238. Seddon JM
26. Joule, JA and Smith, GG. 2000. Heterocyclic chemistry, Oxford: Blackwell Science.
27. Bor-Kuan, C, Sun-Yuan, T and Jun-Yuan, C. 2005. Synthesis and properties of liquid crystalline polymers with low Tm and broad mesophase temperature ranges. Polymer., 46: 8624 - 8633.
28. Henderson, PA, Inkster, RT, Seddon, JM and Imrie, CT. 2001. Highly non-linear liquid crystal tetramers. J Mater Chem., 11: 2722 - 2731.
29. Henderson, PA and Imrie, CT. 2005. Semiflexible liquid crystalline tetramers as models of structurally analogous copolymers. Macromolecules., 38: 3307 - 3311.
30. Henderson, PA and Imrie, CT. 2005. Liquid crystal tetramers: influence of molecular shape on liquid crystal behavior. Liq Cryst., 32: 1531 - 1541.
31. Sheng-Huei, H and Guey-Sheng, LA. 2002. New class of aromatic poly(1,3,4oxadiazole)s and poly(amide-1,3,4-oxadiazole)s containing (naphthalenedioxy)diphenylene groups. Polym J., 34: 917 - 924.
32. Ravikrishnan, A, Sudhakara, P and Kannan, P. 2008. Liquid crystalline and photoactive poly[4,4'-stilbeneoxy]alkylbiphenylphosphates. Polym Deg and Stab., 93: 1564 - 1570.
33. Canadell, J, Mantecón, A and Cádiz, V. 2008. Phosphorus-containing thermosets obtained by cationic copolymerisation of glycidyl compounds with a spiroorthoester or γ-butyrolactone. Polym Deg and Stab., 93: 59 - 67.
34. Du, XH, Wang, YZ, Chen, XT and Tang, XD. 2005. Properties of phosphorus-containing thermotropic liquid crystal copolyester/poly(ethylene terephthalate) blends. Polym Degrad Stabil., 88: 52 - 56.
35. Bonet, J, Callau, L, Reina, JA, Galia, M and Cádiz, V. 2002. Synthesis and crosslinking of polyethers that have mesogenic cores and propargyl groups. J Polym Sci Part A Polym Chem., 40: 3883 - 3892.
36. Yokokoura, H, Oh-E, M, Kondo, K and Oh-Hara, S. 1993. Alkylene polyimides for aligning nematic liquid crystals: anomalous odd-even effect in tilt bias angles as a function of chain length of alkylenes. Mol Cryst Liq Cryst., 225: 253
37. Shen, YR. 1989. Annu. Optical second harmonic generation at interfaces. Rev Phys Chem., 40: 327 - 350.
38. Myrvold, BO. 1991. Symmetry of the aligning polymer and the cone angles in surface stabilized ferroelectric liquid crystal displays. Liq Cryst., 10: 771 - 783.
39. Fernández-Blázquez, JP, Bello, A and Perez, E. 2004. Observation of two glass transitions in a thermotropic liquid-crystalline polymer. Macromol., 37: 9018 - 9026.
40. Chen, BK, Tsay, SY and Shih, IC. 2005. Synthesis of copolyimide containing fluorine and naphthalene with synergizing effect on dielectric constants. Polym Bull., 54: 39 - 46.