Exploitation of rare earth catalysts in polymer syntheses

Frontiers of Chemistry in China

Volumn 1, Issue 3, 2006, Pages 247-259

  Shen, Zhiquan ^a  

^a ZHEJIANG UNIVERSITY   (China)

Author keywords

Alkylene oxide; Alkyne; Diene; Polymer synthesis; Rare earth catalyst

Indexed keywords

EID: 33749349012     PISSN: 16733495     EISSN: 16733614     Source Type: Journal    
DOI: 10.1007/s11458-006-0031-z     Document Type: Article

References (146)

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4. 28th IUPAC Inter national Symposium on Macromolecules, Preprint: 1982: 431
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6. Scientia Sinica, 1983, B 26(8): 785-798
7. (a) Shen Zhiquan, Farona M.-R, Polymerization of phenylacetylene by rare earth catalysts, Polym. Bull., 1983, 10: 8-13;
8. (b) Shen Zhiquan, Farona M.-F., Polymerization of terminal alkynes by rare earth compound-trialkyl aluminum catalysts, Polym. Bull., 1983, 10: 298;
9. Shen Zhiquan, Farona M.-F., Polymerization of terminal alkynes by a new Zeigler-Natta catalyst system: Scandium naphthenate-trialkyl aluminum, J. Polym. Sci.: Polym. Chem. Ed., 1984, 22: 1009-1015
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17. (a) Shen Zhiquan, Chen Xianhai, Shen Youqing, Zhang Yifeng, Ring-opening polymerization of caprolactone by rare earth coordination catalysts I. characteristics, kinetics and mechanism of caprolactone polymerization with Nd(acac)3·3H2O-AlEt3 system, J. Polym. Sci., Part A: Polym. Chem., 1994, 32: 597-603;
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19. Shen Youqing, Shen Zhiquan, Shen Jianliang, Zhang Fuyao, Zhang Yifeng, Ring-opening polymerization of lactones catalyzed by rare earth compounds III. Bulk polymerization of ε-caprolactone with NdC13-epoxide system, Chem. J. Chin. Univ., 1995, 16: 820-822 (in Chinese);
20. Shen Youqing, Shen Zhiquan, Zhang Yifeng, Yao Kemin, Novel Rare earth catalysts for living polymerization and block copolymerization of ε-caprolactone, Macromolecules, 1996, 29: 8289-8295;
21. (e) Shen Youqing, Shen Zhiquan, Zhang Yifeng, Highly active rare earth catalysts for the solution polymerization of ε-caprolactone, Polym. Bull., 1996, 37: 21-28
22. (a) Ling Jun, Shen Zhiquan, Huang Qiaohong, Novel single rare earth aryloxide initiators for ring-opening polymerization of 2,2-dimethyltrimethylene carbonate, Macromolecules, 2001, 34: 7613-7616;
23. (b) Ling Jun, Shen Zhiquan, Zhu Weipu, Synthesis, characterization, and mechanism studies on novel rare-earth calixarene complexes initiating ring-opening polymerization of 2,2-dimethyltrimethylene carbonate, J. Polym. Sci., Part A: Polym. Chem., 2003, 41: 1390-1399;
24. Ling Jun, Zhu Weipu, Shen Zhiquan, Controlling ring-opening copolymerization of ε-caprolactone with trimethylenecarbonate by scandium tris(2,6-di-tert-butyl-4-methylphenolate), Macromolecules, 2004, 37: 758-763
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31. (a) Yang Mujie, Xu Jinglong, Shen Zhiquan, Homogeneous rare earth coordination catalysts for copolymerization of styrene and acrylonitrile, J. Polym. Sci., Part A: Polym. Chem., 1990, 28: 3231-3240;
32. (b) Yang Mujie, Zheng Hao, Shen Zhiquan, Coordination copolymerization of styrene with maleic anhydride by rare earth coordination catalysts, Sci. in China (Series B), 1992, 35(6): 3-10
33. Zhang Yifeng, Su Qi, Zhang Qing, Shen Zhiquan, The kinetics and mechanism of polymerization of methyl methacrylate and butyl methacrylate by coordination catalysts of neodymium compound, Acta Polymerica Sinica, 1994, 6: 653-658 (in Chinese)
34. (a) Chen Zhongxin, Shen Zhiquan, Keim Wilhelm, Oligomerization of monoolefins by rare earth catalyst, Chin. J. Catal., 1991, 12(1): 52-58 (in Chinese);
35. (b) Keim Wilhelm, Chen Zhongxin, Shen Zhiquan, Unusual, CO assisted cyclo-oligomerization reactions of ethylene: formation of cyclopentane and cyclohexane derivatives by ytterbium Ziegler-Natta catalysts, J. Chem, Soc: Chem. Commun., 1989, 24:1923-1924;
36. Yang Mujie, Zhang Xiaojin, Li Jianfu, Shen Zhiquan, New coordination catalysts based on rare earth compounds for polymerization of 1-octene, J. Polym. Sci., Part A: Polym. Chem., 1992, 30: 63-69
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41. Group Three of the Fourth Laboratory of Institute of Applied Chemistry, Chinese Academy of Sciences, Cis-1,4 polymerization of isoprene by rare earth catalysts, Scientia Sinica, 1974, 17: 651-658 (in Chinese)
42. Shen Zhiquan, Studies of the coordination catalysts based on rare earth compound in stereospecific polymerization, Chin. J. Catal., 1980, 1(1): 15-25 (in Chinese)
43. Shen Zhiquan, Ouyang Jun, Wang Fusong, Hu Zhenya, Yu fusheng, Qian Baogong, The Characteristics of lanthanide coordination catalysts and the cls-polydienes prepared therewith, J. Polym. Sci., Part A: Polym. Chem., 1980, 18: 3345-3357
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46. (a) Shen Zhiquan, Ouyang Jun, Rare earth coordination catalysts in stereospecific polymeriztion, Handbook on the Physics and Chemistry of Rare Earths. Vol. 9, Ch.61 North-Holland, 1987, 395-426;
47. (b) Shen Zhiquan et al., Studies on coordination catalysts based on rare earth compounds in stereospecific polymerization, Proceedings of China-U.S. Bilateral Symposium on Polymer Chemistry and Physics (October 5-10, 1979), Beijing, Science Press 1981, 387
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50. (a) Shi Chenjun, Zhang Yifeng, Shen Zhiquan, Synthesis of trans-polybutadiene by lanthanum naphthenate catalytic system, Acta Polymerica Sinica, 2001, (3): 333-337 (in Chinese);
51. (b) Shi Chenjun, Xue Huaiguo, Shen Zhiquan, Li Yongfang, Yang Chunhe, Conductivity of 12-doped high trans-1,4- polybutadiene, Chin. J. Chem., 2001, 19(10): 976-978
52. (a) Li Yuliang, Ouyang Jun, Characterization of polymer- supported rare-earth metal complexes and their catalytic behavior in polymerization of conjugated dienes, J. Macromol. Sci. Chem., 1987, A24(3-4): 227-242;
53. (b) Li Yuliang, Liu Guangdon, Yu Guangqian, Catalytic activity of polymer-supported neodymium complexes in the polymerization of butadiene, J. Macromol. Sci. Chem., 1989, A26(2-3): 405-416;
54. Yu Guangqian, Li Yuliang, Qu Yahuan ,Li Xiaoli, Synthesis and characterization of polymer-supported lanthanide complexes and butadiene polymerization based on them, Macromolecules, 1993, 26(25): 6702-6705
55. Pan Enli, Zhong Chongqi, Xie Demin, Ouyang Jun, Determination of active-center concentration and kinetic studies of some neodymium catalysts in the polymerization of butadiene. I. Effect of polymerization conditions on the number of active centers, Acta Chimica Sinica, 1982, 40(4): 301-309 (in Chinese)
56. Jin Yingtai, Li Xinwen, Sun Yufang, Ouyang Jun, Two-metal rare earth complex for polymerization of dienes Chin. Sci. Bull., 1982, 1:34-35 (in Chinese)
57. 2, Acta Chimica Sinica, 1987, 45(10): 949-954 (in Chinese).
58. (a) Yang Caiyun, Zheng Yulian, Wang Fusong, Bulk polymerization of isoprene in the presence of rare earth catalysts, China Synthetic Rubber Industry, 1987, 10(6): 409-414 (in Chinese);
59. (b)Liao, Yuzhen, Zhao Liqun, Liu Xichun, Bulk polymerization of butadiene with rare earth catalyst, Chin. J. Appl. Chem., 1988, 5(2): 34-37 (in Chinese);
60. Qiao Sanyang, Bulk polymerization of butadiene with rare earth catalyst, China Synthetic Rubber Industry, 1993, 16(1): 11-15 (in Chinese)
61. (a) Shen Zhiquan, Zhang Yifeng, Liu Qing, Li Weishi, Ni Xufeng, Zeng Nianohu, Liang Aimin, Chinese Patent CN ZL 99101536.3;
62. (b) Zhang Yifeng, Ni Xufeng Li Weishi, Shen Zhiquan, Studies on the supported rare earth catalyst of gas phase polymerization of 1,3-butadiene, Chem. J. Chin. Univ., 2003, 24(8): 1499-1502 (in Chinese)
63. (a) Shen Zhiquan, Li Weishi, Zhang Yifeng, Study of kinetic model of gas phase polymerization of 1,3-butadiene catalyzed by supported rare earth coordination system, Sci. in China (Series B), 2000, 43(5): 477-484;
64. (b) Ling Jun, Ni Xufeng, Zhang Yifeng, Shen Zhiquan, Monte Carlo simulation of gas phase polymerization of 1,3-butadiene I. Modeling and programming, Polymer, 2000, 41(24): 8703-8707;
65. Ling Jun, Ni Xufeng, Zhang Yifeng, Shen Zhiquan, Monte Carlo simulation of gas phase polymerization of 1,3-butadiene II. Kinetics, optimization and confirmation. Polym. Intern., 2003, 52:213-217
66. Shen Zhiquan, Song Xiangyu, Yang Jipo, Xiao Shuxiu, Han Xianglan, Coordination copolymerization of butadiene and isoprene with rare earth chloride-alcohol-aluminum trialkyl catalytic systems, Scientia Sinica, 1982, B 25: 124-136
67. Ji Xianzhong, Pang Shufen, Li Yuliang, Ouyang Jun, The living polymerization of butadiene with neodymium isopropoxide and triethyl aluminum in heptane system, Sci. in China, Series B, 1985, (2): 120-126 (in Chinese)
68. Jin Yingtai, Wang Peixin, Pei Fengkui, Cheng Guanglou, Cui Liqiang, Song Chunlei, Copolymerization of styrene with butadiene and isoprene using a rare earth catalyst, Polymer, 1996, 37(2): 349-352
69. (a) Zhang Qisheng, Li Weishi, Shen Zhiquan, Copolymerization of butadiene and styrene with neodymium naphthenate based catalyst, European Polym. J., 2002, 38: 869-873;
70. (b) Zhang Qisheng, Ni Xufeng, Shen Zhiquan, Copolymerization of butadiene with styrene using a rare earth metal compound-dialkymagnesium-halohydrocarbon catalytic system, Polym. Intern., 2002, 51: 208-212;
71. 3 catalyst system, J. Macromol. Sci.-Pure & Appl. Chem., 2004, A41(1): 39-48
72. (a) Zhang Qisheng, Ni Xufeng, Zhang Yifeng, Shen Zhiquan, Homopolymerization and copolymerization of isoprene and styrene with a neodymium catalyst using a magnesium alkyl cocatalyst, Macromol. Rapid Commun., 2001, 22(18): 1493-1496;
73. 3 for copolymerization of isoprene and styrene, Chin. J. Chem., 2004, 22 (7): 764-767
74. (a) Zhang Yifeng, Zheng Ronghua, Shen Zhiquan, The block copolymerization of isoprene with epichlorohydrin by rare earth coordination catalysts, Chin. Sci. Bull., 1995, 40(14): 1182-1185;
75. (b) Hu Zhiguo, Zhang Yifeng, Xue Huaiguo, Shen Zhiquan, Synthesis of block copolymer of isoprene and 1,2-epoxyhexane and its application to immobilizing enzyme, Chin. J. Appl. Chem., 2001, 18(5): 123-126 (in Chinese);
76. Hu Zhiguo, Zhang Yifeng, Zheng Ronghua, Shen Zhiquan, Synthesis and properties of block copolymer of isoprene and acrylonitrile, Polym. Mater. Sci. & Eng., 2002, 18(3): 57-60 (in Chinese);
77. Hu Zhiguo Zhang, Yifeng, Shen Zhiquan, Alternating copolymerization of isoprene with maleic anhydride by rare earth coordination catalyst, Chem. J. Chin. Univ., 2001, 22(6): 1049-1052 (in Chinese)
78. Shen Zhiquan, Polymerization of acetylenes with rare earth coordination catalysts, Macromol, Symp., 1994, 84: 5-13
79. (a) Shen Zhiquan, Wang Zheng, Cai Yiping, Synthesis of high cis polyacetylene with coordination catalysts consisting of rare earth naphthenate, Inorganica Chimica Acta, 1985, 110: 55-58;
80. 3-third component, Chin. J. Catal., 1985, 6: 260-266 (in Chinese);
81. Zhang Yifeng, Cai Yiping, Yang Mujie, Shen Zhiquan, The polymerization of acetylene by coordination catalysts composed of neodymium compound, Gaofenzi Tongbao, 1986, (2): 125-130 (in Chinese);
82. Yang Mujie, Cai Yiping, Shen Zhiquan, The stereospecific polymerization of acetylene by coordination catalysts of neodymium isopropoxide, J. Chin. Rare Earth Soc., 1984, 2(1): 11-20 (in Chinese);
83. (e) Shen Zhiquan, Yu Luping, Yang Mujie, New scandium coordination catalysts for the cis-polymerization of acetylene, Inorganica Chimica Acta, 1985, 109: 55-57
84. Yu Luping, Shen Zhiquan, Yang Mujie, The kinetics and mechanism of polymerization of acetylene by rare earth coordination catalysts, Synth. Met., 1985, 11: 53-60
85. (a) Yang Mujie, Qiao Yinan, Xiang Xinzhen, Chen Zhongxin, Shen Zhiquan, Electrical conductive polyacetylene/elastomer composite films, Polym. Mater. Sci. & Eng., 1985, (1): 55-62 (in Chinese);
86. (b) Chen Zhongxin, Liu Min, Shi Mingxiao, Shen Zhiquan, Hummel D.-O., Fourier transform infrared spectroscopic study of polyacetylene I. Spectral assignment and characteristics of cis/trans geometric isomers, Makromol. Chem., 1987, 188(11): 2687-2695;
87. Chen Zhongxin, Shen Zhiquan, Liu Min, Shi Mingxiao, Hummel D.-O., Fourier transform infrared spectroscopic study of polyacetylene TI. Thermal isomerization kinetics and mechanism, Makromol. Chem., 1987, 188: 2697-2703;
88. Shen Zhiquan, Chen Zhongxin, Yang Mujie, Ferric chloride doped rare earth polyacetylene, Acta Chimica Sinica, 1986, 44: 575-579 (in Chinese);
89. (e) Chen Zhongxin, Shen Zhiquan, Chen Changshen, Zhao Yonggang, Yang Mujie, Conductivity and spectroscopic characterization of polyacetylene doped with ferric chloride, Makromol. Chem., 1987, 188: 349-355;
90. (f) Chen Zhongxin, Shen Zhiquan, Anhydrous lanthanide chlorides doped rare earth polyacetylene, Inorganica Chimica Acta, 1986, 122(2): 249-253;
91. (g) Qiao Yinan, Zhang Yifeng, Yu Luping, Yang Mujie, Shen Zhiquan, Electrochemistry of rare earth polyacetylene, Science Sinica, 1986, B30:673-680;
92. (h) Yu Luping, Qiao Yinan, Shen Zhiquan, Electrochemistry of rare earth polyacetylene battery, Acta Chimica Sinica, 1985, 43: 688-691 (in Chinese)
93. 3 catalysts, Journal of the Chinese Rare Earth Society, 1988, 6(4): 17-21 (in Chinese);
94. (b) Zhao Jian, Yang Mujie, Liu Min, Shen Zhiquan, Simultaneous polymerization and formation of polyphenylacetylene film by rare earth coordination catalysts. IV. Kinetic behavior and mechanism of polymerization, Journal of the Chinese Rare Earth Society, 1990, 8(1): 30-36 (in Chinese);
95. Zhao Jian, Yang Mujie, Zhang Wende, Shen Zhiquan, Simultaneous polymerization and formation of polyphenylacety lene films by rare earth coordination catalysts, Acta Polymerica Sinica, 1990, (4): 447-452 (in Chinese);
96. 60Co γ- ray, Journal of Polymer Science, Part A: Polymer Chemistry, 1989, 27: 3829-3835
97. (a) Zhang Yifeng, Shen Zhiquan, Ethylene oxide polymerization using the rare earth coordination catalysts, Acta Polymerica Sinica, 1988, 6:469-473 (in Chinese);
98. 2O catalyst, Inorganica Chimica Acta, 1989, 155: 263-265
99. 2O for polymerization of propylene oxide, Journal of Polymer Science, Part A: Polymer Chemistry, 1990, 28: 1995-1997;
100. (b) Wang Guoping, Zhang Yifeng, Shen Zhiquan, Ye Hongwei, The polymerization of propylene oxide by rare earth coordination catalysts II. Analysis of microstructure of poly(propylene oxide), Journal of Zhejiang University, 1988, 22(1): 67-73 (in Chinese)
101. (a) Peng Jiande, Zhang Yifeng, Shen Zhiquan, A kinetics study of ring-opening polymerization of alkylene oxide based on rare earth coordination catalysts, Acta Polymeric Sinica, 1991, (2): 184-189 (in Chinese);
102. (b) Peng Jiande, Zhang Yifeng, Shen Zhiquan, Li Yebing, Study on the formation of active species of rare earth catalyst, Journal of Zhejiang University, 1990,24(6): 809-816(in Chinese)
103. Zeng Xianbiao, Zhang Yifeng, Shen Zhiquan, Ring-opening polymerization of propylene oxide by chitosan supported rare earth catalytic system and its kinetics, J. Polym. Sci., Part A: Polym. Chem., 1997, 35(11): 2177-2182
104. Zheng Yansong, Ying Laiqiang, Shen Zhiquan, Polymerization of propylene oxide by a new neodymium complex of calixarene derivative, Polymer, 2000, 41(4): 1641-1643
105. (a) Wu Jian, Shen Zhiquan, Rare earth coordination catalysts for polymerization of alkylene oxide I. Polymerization of epichlorohydrin, Polym. J., 1990, 22(4): 326-330;
106. (b) Sun Junquan, Wu Peizhan, Shen Zhiquan, The Kinetics of ring opening polymerization of epichlorohydrin with rare earth catalyst, Chinese Journal of Catalysis, 1989, 10(3): 301-308 (in Chinese)
107. 3, Chinese Journal of Polymer Science, 1994, 12(2): 153-156;
108. (b) Shen Zhiquan, Jiang Donglin, Zhang Yifeng, Rare earth polymer complex catalyst for ring-opening polymerization of epichlorohydrin, Chemical Research in Chinese Universities, 1995, 11(3): 238-242
109. (a) Shen Zhiquan, Wu Jian, Wang Guoping, Use of rare earth coordination catalyst for ethylene oxide and propylene oxide copolymerization, J. Polym. Sci., Part A: Polym. Chem., 1990, 28: 1965-1971;
110. (b) Wu Jian, Shen Zhiquan, Ionic conductivity of ethylene oxide and propylene oxide copolymer complexes with sodium thiocyanate, Polym. J., 1990, 22: 283-286
111. Ge Ling, Huang Qiaohong, Zhang Yifeng, Shen Zhiquan, Ring-opening polymerization of styrene oxide with rare earth coordination catalysts, Euro. Polym. J., 2000, 36(12): 2699-2705
112. (a) Sun Weilin, Zhang Yifeng, Shen Zhiquan, Ring-opening polymerization of chloromethyl thiirane(CMT) by rare earth coordination catalysts III. Polymerization of CMT and polymerization kinetics, Chin. Chem. Lett., 1994, 5(2): 157-158;
113. (b) Li Weishi, Shen Zhiquan, Zhang Yifeng, Ring-opening polymerization of chloromethyl thiirane with catalytic systems composed of lanthanide compound and ethyl aluminum sesquichloride, Chin. Chem. Lett., 1998, 9(2): 149-151;
114. 3 coordination catalyst, Polym. J., 1997, 29(12): 1037-1039;
115. 2/Nd as initiator, Macromol. Rapid Commun., 1997, 18(9): 769-773;
116. (e) Li Weishi, Zhang Fuyao, Shen Zhiquan, Zhang Yifeng, Determination of Mark-Houwink equation constants of poly(chloromethyl thiirane), Acta Polymerica Sinica, 1997, (4): 393-399 (in Chinese);
117. (f) Li Weishi, Shen Zhiquan, Zhang Yifeng, Activity and mechanism of rare earth solid superacid for initiating ring-opening polymerization of chloromethyl thiirane, Euro. Polym. J., 2001, 37: 1185-1190
118. (a) Sun Weilin, Shen Zhiquan, Zhang Yifeng, Studies on the copolymerization of chloromethyl thiirane with epichlorohydrin by rare earth coordination catalysts, Chem. J. Chin. Univ., 1996, 17(10): 1638-1643 (in Chinese);
119. (b) Sun Weilin, Shen Zhiquan, Zhang Yifeng, Studies on the copolymerization of chloromethyl thiirane with propylene oxide by rare earth coordination catalysts, Chem. J. Chin. Univ., 1996, 17(1): 137-141(in Chinese)
120. (a) Sun Weilin, Shen Zhiquan, Zhang Yifeng, Study on chelating resins containing polythioether main chain III. Synthesis and adsorption properties of chelating resin bearing thiosulfate or azide group, Gongneng Gaofenzi Xuebao, 1996, 9(3): 324-328 (in Chinese);
121. (b) Sun Weilin, Shen Zhiquan, Zhang Yifeng, Study on chelating resins containing polythioether main chain IV. Synthesis and adsorption properties of chelating resin bearing thiocyanate, Gongneng Gaofenzi Xuebao, 1996, 9(4): 516-522 (in Chinese);
122. Sun Weilin, Shen Zhiquan, Zhang Yifeng, Study on chelating resins containing polythioether main chain II. Synthesis and adsorption properties of chelating resin bearing 2-aminothiazol, Acta Polymerica Sinica, 1996, (2): 216-221;
123. Sun Weilin, Shen Zhiquan, Zhang Yifeng, Study on chelating resins containing polythioether main chain I. Synthesis and adsorption properties of chelating resin bearing 4-aminoantipyrine or ethylxanthic acid, Ion Exchange and Adsorption, 1997, 13 (1): 23-29
124. (a) Li Weishi, Shen Zhiquan, Zhang Yifeng, Studies on new type chelating resins I. Synthesis and sorption properties of chelating resins having polythioether backbone and primary amino group, Chem. J. Chin. Univ., 1998, 19(2): 322-325 (in Chinese);
125. (b) Li Weishi, Shen Zhiquan, Zhang Yifeng, Synthesis of functional resins from poly(chloromethyl thiirane) and their sorption properties for noble metal, J. Macromol. Sci.-Pure & Appl, Chem., 1998, A35(6): 955-964;
126. Li Weishi, Shen Zhiquan, Sun Weilin, Zhang Yifeng, Studies on ring-opening polymerization of chloromethyl thiirane with rare earth catalysts and functional resins synthesized therewith, Chin. J. Chem., 2002, 20: 299-303
127. (a) Tan Chung-sung, Hsu Tsung-ju, Alternating copolymerization of carbon dioxide and propylene oxide with a rare earth metal coordination catalyst, Macromolecules, 1997, 30: 3147-3150;
128. (b)Liu Binyuan, Zhao Xiaojiang, Wang Xianhong, Wang Fusong, J. Polym. Sci. Polym. Chem. Ed., 2001, 39(16): 2751-2754
129. (a) Zhang Lifang, Shen Zhiquan, Yu Cuiping, Fan Ling, Ring-opening polymerization of D,L-lactide by rare earth 2,6-dimethylaryloxide, Polym. Intern., 2004, 53(8): 1013-1016;
130. (b) Zhang Lifang, Shen Zhiquan, Yu Cuiping, Fan Ling, Characteristics and mechanism of L-lactide polymerization by lanthanide 2,6-dimethylaryloxide, J. Mol. Cat. A-Chem., 2004, 214 (2): 199-202,
131. (a) Yu Cuiping, Zhang Lifang, Tu Kehua, Shen Zhiquan, Ring-opening polymerization of (D,L)-lactide by the single component rare earth tris(4-tert- butylphenolate)s, Polym. Bull., 2004, 52(5): 329-337;
132. (b) Yu Cuiping, Zhang Lifang, Ni Xufeng, Shen Zhiquan, Tu Kehua, Ring-opening polymerization of L-lactide by rare-earth tris(4-tert- butylphenolate) single-component initiators J. Polym. Sci. Part A-Polym. Chem., 2004, 42(24): 6209-6215,
133. (a) Shen Zhiquan, Shen Youqing, Sun Junquan, Zhang Yifeng, Ring-opening polymerization of lactone by rare earth catalysts I. CL polymerization by rare earth alkoxide, Chin. Sci. Bull, 1994, 39: 1096-1100;
134. 4 systems, Polym. 1, 1995, 27(1): 59-64
135. (a) Shen Youqing, Shen Zhiquan, Zhang, Yifeng Huang Qiaohong, Random copolymerization of ε-caprolactone and trimethylene carbonate with rare earth catalysts, J. Appl. Polym. Sci., 1997, 69(10): 2131-2139;
136. (b) Shen Youqing, Zhu Kangjie, Shen Zhiquan,Yao Kemin, Synthesis and characterization of highly random copolymer of 0-caprolactone and lactide using rare earth catalyst, J, Polym, Sci., PartA: Polym, Chem, 1996, 34: 1799-1805
137. (a) Shen Zhiquan, Zhu Guixiang, Ling, Jun, Homo- and copolymerization of ε-caprolactone and 2,2-dimethyl trimethylene carbonate by rare earth initiators, Chin. J. Chem., 2002, 20: 1369-1374;
138. (b) Ling Jun, Shen Zhiquan, Lanthanum tri(2,6-di-tert-butyl-4- methylphenolate) as a novel versatile initiator for homo- and copolymerization of cyclic carbonates and lactones, Macromol. Chem. & Phys., 2002, 203: 735-738
139. (a) Yu Cuiping, Zhang Lifang, Shen, Zhiquan, Ring-opening polymerization of ε-caprolactone using rare earth tris(4-tertbutylphenolate)s as a single component initiator, Euro. Polym. J., 2003, 39(10): 2035-2039;
140. (b) Zhang Lifang, Yu Cuiping, Shen Zhiquan, Characteristics, kinetics and mechanism of ε-caprolactone polymerization by lanthanide tris(2,6-dimethylphenolate)s, Polym. Bull, 2003, 51:47-53;
141. Fan Ling, Zhang Lifang, Shen. Zhiquan, Novel single-component rare earth phenolate catalyst for ring-opening polymerization of ε-caprolactone, Chem. Res. Chin. Univ., 2003, 19(4): 516-517;
142. Peng Fei, Ling Jun, Shen Zhiquan, Zhu Weiwei, Correlation between phenol structure and catalytic activity of samarium(III) phenolates in polymerization of epsilon-caprolactone Part 2. Tertbutyl's electronic and steric effects, J. Mol. Cat. A: Chem., 2005, 230: 135-141
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