Transfer to Polymer and Long-Chain Branching in PLP-SEC of Acrylates

被引：29

作者：

Castignolles, Patrice ^{[1
]}

机构：

[1] Johannes Gutenberg Univ Mainz, Inst Phys Chem, D-55099 Mainz, Germany

来源：

MACROMOLECULAR RAPID COMMUNICATIONS | 2009年 / 30卷 / 23期

关键词：

2-Ethylhexyl acrylate; Propagation; Radical polymerization; Size-exclusion chromatography; Transfer to polymer; SIZE-EXCLUSION CHROMATOGRAPHY; PROPAGATION RATE COEFFICIENTS; PULSED-LASER POLYMERIZATION; FREE-RADICAL POLYMERIZATION; EVALUATED RATE COEFFICIENTS; N-BUTYL ACRYLATE; MASS-SPECTROMETRY; LIGHT-SCATTERING; ALKYL ACRYLATES; 2-ETHYLHEXYL ACRYLATE;

D O I：

10.1002/marc.200900530

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Pulsed laser polymerization (PLP) combined with size exclusion chromatography (SEC) is the method of choice for determining propagation rate coefficients. The influence of the long-chain branching in PLP-SEC is investigated using multiple-detection SEC and a recently developed method to detect long-chain branching [P. Castignolles, R. Grab, M. Parkinson, M. Wilhelm, M. Gaborieau, Polymer 2009, 50, 2373.] While little or no long-chain branching is detected in poly(n-butyl acrylate), the error in relevant molecular weights of poly(2-ethylhexyl acrylate) is large (30-100%) due to long-chain branching. Possible variations of propagation rate coefficient with alkyl groups in alkyl acrylates or with the solvent have to be reconsidered.

引用

页码：1995 / 2001

页数：7

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