| SYNTHESIS OF CHIRAL BINAPHTHYL CROWN ETHERS AND THEIR USE IN ANIONIC POLYMERIZATION OF METHYL METHACRYLATE AS INITIATOR LIGANDS |
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| 引用本文： | 习复. SYNTHESIS OF CHIRAL BINAPHTHYL CROWN ETHERS AND THEIR USE IN ANIONIC POLYMERIZATION OF METHYL METHACRYLATE AS INITIATOR LIGANDS[J]. 高分子科学, 2004, 0(1): 63-68 |
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| 作者姓名： | 习复 |
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| 作者单位： | Centre for |
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| 摘 要： | INTRODUCTIONAnionic polymerization of MMA could be carried out with alkyllithium or Grignard reagent etc. in a non-polarsolvent. However, this polymerization system often involves multiple active species and side reactions dependingon initiator, countercation, solvent and polymerization temperature etc. Therefore, the molecular weightdistribution and stereomicrostructure of PMMA obtained would be very different[1-4]. These differences wouldbe mainly caused by the nucleophilic attack of…
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| 收稿时间： | 2002-10-25 |
| 修稿时间： | 2003-01-17 |
SYNTHESIS OF CHIRAL BINAPHTHYL CROWN ETHERS AND THEIR USE IN ANIONIC POLYMERIZATION OF METHYL METHACRYLATE AS INITIATOR LIGANDS* |
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| Hong-wei Liu,Chuan-fu Chen,Fu Xi. SYNTHESIS OF CHIRAL BINAPHTHYL CROWN ETHERS AND THEIR USE IN ANIONIC POLYMERIZATION OF METHYL METHACRYLATE AS INITIATOR LIGANDS*[J]. Chinese Journal of Polymer Science, 2004, 0(1): 63-68 |
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| Authors: | Hong-wei Liu Chuan-fu Chen Fu Xi |
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| Affiliation: | Centre for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China Centre for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China Centre for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China |
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| Abstract: | Some chiral binaphthyl crown ethers were synthesized. The anionic polymerization of methyl methacrylate (MMA) was carried out in the presence of t-BuOK, Ph2CHK or Ph2CHNa (RM), and RM coordination initiator by using chiral binaphthyl crown ethers as ligands, respectively. The results showed that in the former case the PMMA obtained has mainly isotactic structure but without optical activity, while in the later case the PMMA produced predominately has syndiotactic suucture also without optical activity. |
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| Keywords: | Chiral binaphthyl crown ether MMA Anionic polymerization |
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