Synthesis and characterization of alpha,omega-macrozwitterionic block copolymers of styrene and isoprene

被引：40

作者：

Schadler, V ^{[1
]}

Spickermann, J ^{[1
]}

Rader, HJ ^{[1
]}

Wiesner, U ^{[1
]}

机构：

[1] MAX PLANCK INST POLYMER RES,D-55128 MAINZ,GERMANY

来源：

MACROMOLECULES | 1996年 / 29卷 / 14期

关键词：

D O I：

10.1021/ma951894o

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The synthesis of a novel type of telechelic block copolymer is described: bifunctional poly(styrene-b-isoprene) diblock copolymers were prepared by anionic polymerization using [2-[(N,N-dimethylamino)methyl]phenyl]lithium as the initiator and 1,3-propanesultone as the terminating reagent. Quaternization of the tertiary amino group yields the alpha,omega-macrozwitterionic block copolymer. The applicability of matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF-MS) for end group analysis is demonstrated. Using analogous bifunctional polystyrene samples, MALDI-TOF-MS enabled us to identify side reactions reducing end functionality in previous synthetic routes to macrozwitterions. The conversion of chain ends further checked by conventional methods such as dye extraction and titration is found to be almost quantitative.

引用

页码：4865 / 4870

页数：6

共 25 条

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[2]

BAHR U, 1991, ANAL CHEM, V63, pA1193

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