A convenient method for the synthesis of cyclic polymers by ATRP

被引：5

作者：

Chen, Han Jia ^{[1
]}

Yan, Tao ^{[1
]}

Shi, Xu Hua ^{[1
]}

Yu, Ri Wen ^{[1
]}

机构：

[1] Shantou Univ, Sch Sci, Shantou 515063, Peoples R China

来源：

JOURNAL OF POLYMER RESEARCH | 2012年 / 19卷 / 10期

关键词：

Cyclic polystyrene; Cyclic poly(methyl methacrylate); ATRP; Intra-molecular coupling; Telechelic polymer; AMINO HETERODIFUNCTIONAL POLYSTYRENE; EXPANSION METATHESIS POLYMERIZATION; FREE-RADICAL POLYMERIZATION; RING-EXPANSION; MACROCYCLIC POLYMERS; EFFICIENT ROUTE; ALPHA-CARBOXYL; CYCLIZATION; STRATEGIES;

D O I：

10.1007/s10965-012-9987-1

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 [高分子化学与物理];

摘要：

Cyclic polystyrene and poly(methyl methacrylate) with narrow molecular weight distribution were synthesized conveniently by intra-molecular cyclization of alpha-carboxyl-omega-chloride hetero-telechelic polystyrene and poly(methyl methacrylate) using potassium carbonate as the catalyst in highly dilute solution, respectively. The linear precursors were prepared successfully by atom transfer radical polymerization (ATRP) using 4-(chloromethyl) benzoic acid as an initiator. The chemical structures and molecular weights of the synthesized polymers were systematically characterized by nuclear magnetic resonance spectrum (H-1-NMR), Fourier transform infrared spectroscopy (FTIR) and gel permeation chromatography (GPC). The results revealed that high purity cyclic polymers were synthesized via a combination of intra-molecular cyclization and ATRP, and isolated easily by column chromatography on silica gel using a mixture of petroleum ether /ethyl acetate as an eluant.

引用

页数：7

共 21 条

[1]

Cyclic ruthenium-alkylidene catalysts for ring-expansion metathesis polymerization [J].