ELIMINATION OF GELATINIZATION USING MIXTURE OF SOLVENTS IN THE ATRP REACTION TO SYNTHESIZE MULTI ARM STAR POLYMERS

ZHANG Jun; LI Huayi; ZHANG Liaoyun; HU Youliang

doi:10.3724/SP.J.1105.2010.09421

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ELIMINATION OF GELATINIZATION USING MIXTURE OF SOLVENTS IN THE ATRP REACTION TO SYNTHESIZE MULTI ARM STAR POLYMERS

Research Bulletin | 更新时间：2021-03-19

- ELIMINATION OF GELATINIZATION USING MIXTURE OF SOLVENTS IN THE ATRP REACTION TO SYNTHESIZE MULTI ARM STAR POLYMERS
- Acta Polymerica Sinica Issue 7, Pages: 937-941(2010)
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- DOI：10.3724/SP.J.1105.2010.09421
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- Published：20 July 2010，
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ZHANG Jun, LI Huayi, ZHANG Liaoyun, HU Youliang. ELIMINATION OF GELATINIZATION USING MIXTURE OF SOLVENTS IN THE ATRP REACTION TO SYNTHESIZE MULTI ARM STAR POLYMERS. [J]. Acta Polymerica Sinica (7):937-941(2010)
DOI：

ZHANG Jun, LI Huayi, ZHANG Liaoyun, HU Youliang. ELIMINATION OF GELATINIZATION USING MIXTURE OF SOLVENTS IN THE ATRP REACTION TO SYNTHESIZE MULTI ARM STAR POLYMERS. [J]. Acta Polymerica Sinica (7):937-941(2010) DOI： 10.3724/SP.J.1105.2010.09421.

摘要

研究了带有苄氯基团的超支化聚苯乙烯引发苯乙烯和甲基丙烯酸甲酯的ATRP反应的动力学，在良溶剂氯苯中，该反应很容易发生凝胶.如果在氯苯溶剂中反应一段时间后，加入1，4-二氧六环作为不良溶剂，则能有效阻止凝胶反应，最终得到分子量超过百万的星形聚合物.

Abstract

Hyperbranched polystyrene synthesized by the copolymerization of styrene and p-chloromethyl styrene was used as initiator to initiate the ATRP reactions of styrene and methyl methacrylate with CuCl/ pentamethyldiethylenetriamine as catalysts.The reaction dynamics were studied.It was found that the ATRP the reaction gelatinized easily in good solvent chlorobenzene.The monomer conversions before gelation were small.If poor solvent 1

4-dioxane was added in chlorobenzene before gelation

the gelatinization reactions could be eliminated efficiently.The monomer conversions could reach to high values and muti-arm star polymers with high molecular weight about a million were synthesized.This is new method to prepare multi-arm star polymers with high molecular weight.

关键词

多臂星形聚合物原子转移自由基聚合超支化聚苯乙烯反应动力学

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Department of Applied Chemistry,School of Science,Northwestern Polytechnical University

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