Structural Analysis of Linear PEEK via MALDI-TOF Mass Spectrometry

被引：5

作者：

Behrendt, Jonathan M. ^{[1
]}

Benstead, Michael ^{[1
,2
]}

Chaplin, Adam ^{[2
]}

Wilson, Brian ^{[2
]}

Turner, Michael L. ^{[1
]}

机构：

[1] Univ Manchester, Sch Chem, Manchester M13 9PL, Lancs, England

[2] Hillhouse Int, Victrex Technol Ctr, Thorton Cleveleys FY5 4QD, Lancs, England

来源：

MACROMOLECULES | 2011年 / 44卷 / 22期

关键词：

SIZE-EXCLUSION CHROMATOGRAPHY; POLY(ETHER ETHER KETONE); CHEMICAL MODIFICATION; ROOM-TEMPERATURE; POLYMERS;

D O I：

10.1021/ma201580d

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

A study was conducted to demonstrate a procedure under which unmodified poly(ether ether ketone) (PEEK) was characterized directly and unambiguously by MALDI-TOF mass spectrometry. All mass spectra obtained by this method clearly displayed the repeat unit of PEEK and the mass of the two polymer end-groups was calculated as a result. A series of PEEK oligomers was synthesized by the reaction of 4,4'-difluorobenzophenone (BDF) and hydroquinone (HQ) in the presence of a carbonate base to demonstrate the effectiveness of the technique. The MALDI-TOF mass spectrum of oligomer showed the presence of a secondary polymeric series with an m/z of 1196, 1485, 1774, 2062, and 2351. The presence of this secondary species was attributed to the reaction with an excess of BDF without reaching completion. The best mass spectra were obtained using dithranol as the matrix and using the mass spectrometer in linear mode.

引用

页码：9054 / 9056

页数：3

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