“LIVING”/CONTROLLED RADICAL POLYMERIZATION OF ETHYL METHYLACRYLATE WITH 2,2’-AZOBISISOBUTYRONITRILE/FERRIC CHLORIDE/TRIPHENYLPHOSPHINE INITIATION SYSTEM

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“LIVING”/CONTROLLED RADICAL POLYMERIZATION OF ETHYL METHYLACRYLATE WITH 2,2’-AZOBISISOBUTYRONITRILE/FERRIC CHLORIDE/TRIPHENYLPHOSPHINE INITIATION SYSTEM

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- “LIVING”/CONTROLLED RADICAL POLYMERIZATION OF ETHYL METHYLACRYLATE WITH 2,2’-AZOBISISOBUTYRONITRILE/FERRIC CHLORIDE/TRIPHENYLPHOSPHINE INITIATION SYSTEM
- Vol. 18, Issue 2, Pages: 149-153(2000)
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- Published：20 April 2000
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“LIVING”/CONTROLLED RADICAL POLYMERIZATION OF ETHYL METHYLACRYLATE WITH 2,2’-AZOBISISOBUTYRONITRILE/FERRIC CHLORIDE/TRIPHENYLPHOSPHINE INITIATION SYSTEM[J]. 2000, 18(2): 149-153.
DOI：

“LIVING”/CONTROLLED RADICAL POLYMERIZATION OF ETHYL METHYLACRYLATE WITH 2,2’-AZOBISISOBUTYRONITRILE/FERRIC CHLORIDE/TRIPHENYLPHOSPHINE INITIATION SYSTEM[J]. 2000, 18(2): 149-153. DOI：

摘要

"Living"/controlled radical polymerization of ethyl methacrylate (EMA) was carried out with a 2

2'-azobisisobutyronitrile (AIBN)/ferric chloride (FeCl3)/triphenylphosphine (PPh3) initiation system at 85℃. Thc numberaverage molecular weight (Mn) increases linearly with monomer conversion and the rate of polymerization is first order withrespect to monomer concentration. The Mw of PEMA ranges from 3900 to 17600 and the polydispersity indices are quitenarrow (1.09～1.22). The conversion can reach up to ～ 100% and Mw of the polymers obtained is close to that designed.The polymerization mechanism belongs to the reveres atom transfer radical polymerization (ATRP).The polymer was end-functionalized by chlorine atom

which acts as a macroinitiator to proceed extension polymerization in the presence of CuBr/bipy catalyst system via an ATRP process.The presence of ω-chlorine in the PEMA obtained was identified by 1HNMR spectrum.

Abstract

"Living"/controlled radical polymerization of ethyl methacrylate (EMA) was carried out with a 2

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