SYNTHESIS OF COPOLYMERS OF β-PINENE BY THE COMBINATION OF LIVING CATIONIC POLYMERIZATION AND ATRP

LI Anlong; LIANG Hui; LU Jiang

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SYNTHESIS OF COPOLYMERS OF β-PINENE BY THE COMBINATION OF LIVING CATIONIC POLYMERIZATION AND ATRP

Research Article | 更新时间：2021-03-19

- SYNTHESIS OF COPOLYMERS OF β-PINENE BY THE COMBINATION OF LIVING CATIONIC POLYMERIZATION AND ATRP
- Acta Polymerica Sinica Issue 1, Pages: 151-155(2006)
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- Published：20 February 2006，
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LI Anlong, LIANG Hui, LU Jiang. SYNTHESIS OF COPOLYMERS OF β-PINENE BY THE COMBINATION OF LIVING CATIONIC POLYMERIZATION AND ATRP. [J]. Acta Polymerica Sinica (1):151-155(2006)
DOI：

LI Anlong, LIANG Hui, LU Jiang. SYNTHESIS OF COPOLYMERS OF β-PINENE BY THE COMBINATION OF LIVING CATIONIC POLYMERIZATION AND ATRP. [J]. Acta Polymerica Sinica (1):151-155(2006) DOI：

摘要

通过活性正离子聚合与原子转移自由基聚合(ATRP)转换合成了β-蒎烯与甲基丙烯酸甲酯(MMA)、丙烯酸丁酯(BA)、苯乙烯(St)的新型接枝共聚物.首先以α-氯代乙苯/TiCl4/Ti(OiPr)4/nBu4NCl体系引发β-蒎烯活性正离子聚合

合成预定分子量大小和窄分子量分布的聚β-蒎烯

然后经N-溴代琥珀酰亚胺(NBS)定量溴化

得到溴化聚β-蒎烯大分子引发剂(Br/β-蒎烯链节摩尔比为0.5).然后将该大分子引发剂与溴化亚铜(CuBr)/2

2′-联吡啶(bpy)复合

引发MMA、BA、St进行ATRP接枝聚合.接枝反应显示一级动力学特征

且产物的分子量及分子量分布可控

表明上述ATRP接枝聚合反应具有可控聚合特征.接枝产物的结构经1H-NMR分析得到进一步证实.

Abstract

Graft copolymers of βpinene with methyl methacrylate(MMA)

butyl acrylate (BA) or styrene(St) were synthesized by the combination of living cationic polymerization and atom transfer radical polymerization (ATRP)．β-Pinene polymers with predetermined molecular weights and narrow molecular weight distributions (MWDs)were prepared by living cationic polymerization with the 1-phenylethyl chloride／TiCl4／Ti(OiPr)4／nBu4NCl initiating system

and the obtained polymers were brominated quantitatively by N—bromosuccinamide in the presence of AIBN

yielding poly(β—pinene)macroinitiators with 50％ of bromine contents(Br/β-pinene unit molar ratio=0．5)．The macroinitiator

in conjunction with CuBr and 2

2'-bipyridine

was used to initiate ATRP grafting of BA．MMA and St．All of the grafting polymerizations induced linear first-order kinetic plots and gave graft copolymers with controlled molecular weights and MWDs

suggesting that these polymerizations are controllable．The structures of the obtained graft copolymers of β-pinene with(methyl)methacrylate or styrene were confirmed by 1H-NMR spectra．

关键词

聚β-蒎烯接枝共聚物MMABASt活性正离子聚合ATRP

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1Department of Polymeric Materials and Engineering,College of Material and Energy,Guangdong University of Technology

汕头大学理学院化学系

汕头大学理学院化学系广州510006汕头大学理学院化学系汕头

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