Separation of telechelic oligomers according to architecture by liquid chromatography

被引：2

作者：

Malik, Muhammad Imran ^{[1
,2
,3
]}

Ahmed, Hasnat ^{[2
,3
]}

Trathnigg, Bernd ^{[2
,3
]}

机构：

[1] Univ Karachi, ICCBS, HEJ Res Inst Chem, Karachi 75270, Pakistan

[2] NAWI Graz, CePoL, A-8010 Graz, Austria

[3] Karl Franzens Univ Graz, Inst Chem, A-8010 Graz, Austria

来源：

JOURNAL OF CHROMATOGRAPHY A | 2013年 / 1314卷

关键词：

Liquid chromatography; Interaction parameter; Block copolymer; Symmetry; MALDI-TOF-MS; AMPHIPHILIC BLOCK-COPOLYMERS; AB LINEAR DIBLOCK; TRIBLOCK COPOLYMERS; MICELLAR PROPERTIES; PROPYLENE-OXIDE; MICELLIZATION; MACROMOLECULES; ADSORPTION; OXIDE)-BLOCK-POLY(L-LACTIDE); POLYMERS;

D O I：

10.1016/j.chroma.2013.09.023

中图分类号：

Q5 [生物化学];

学科分类号：

071010 ; 081704 ;

摘要：

Telechelic oligomers based on diethylene glycol or lower polyethylene glycols and caprolactone or butene oxide can be separated according to their architecture by means of liquid chromatography under adsorption conditions for the hydrophobic block and critical or exclusion conditions for PEG. This behavior, which is predicted by the theory, can be verified by the experiment for block copolymers of ethylene oxide with epsilon-caprolactone and butene oxide. The individual peaks were identified by matrix-assisted time-of-flight mass spectrometry (MALDI-TOF-MS) of fractions obtained by semipreparative liquid chromatography at critical conditions of center block (PEG) and adsorption conditions for outer blocks (PCL and PBO). (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：180 / 187

页数：8

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