Reversible, Nondegradative Conversion of Crystalline Aromatic Poly(ether ketone)s into Organo-Soluble Poly(ether dithioketal)s

被引：46
|
作者：
Colquhoun, Howard M. [1 ]
Hodge, Philip [2 ]
Paoloni, Francois P. V. [1 ]
McGrail, P. Terry
Cross, Paul
机构：
[1] Univ Reading, Dept Chem, Reading RG6 6AD, Berks, England
[2] Univ Manchester, Sch Chem, Manchester M13 9PL, Lancs, England
来源：
MACROMOLECULES | 2009年 / 42卷 / 06期
基金：
英国工程与自然科学研究理事会;
关键词：
POLY(ARYL ETHER KETONES); SIZE-EXCLUSION CHROMATOGRAPHY; MOLECULAR-MASS DETERMINATION; ETHANEDIYL S; S-ACETALS; CHEMICAL MODIFICATION; CARBONYL-COMPOUNDS; SYNTHETIC METHODS; CYCLIC OLIGOMERS; ROOM-TEMPERATURE; ACID;
D O I：
10.1021/ma8023377
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Crystalline aromatic poly(ether ketone)s Such as PEEK and PEK may be cleanly and reversibly derivatized by dithioketalization of the carbonyl groups With 1,2-ethanedithiol or 1,3-propanedithiol under strong acid conditions. The resulting 1,3-dithiolane and 1,3-dithiane polymers are hydrolytically stable, amorphous, and readily soluble in organic solvents such as chloroform and THF and are thus (unlike their parent polymers) easily characterized by gel permeation chromatography (GPC). GPC analysis of a range of derivatized PEEK samples using light-scattering detection revealed, in some instances, a bimodal molecular weight distribution with a small but potentially significant (and previously undetected) very high-molecular-weight fraction.
引用
收藏
页码：1955 / 1963
页数：9
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