苯乙烯-丁二烯-苯乙烯/聚乙烯基甲基醚共混体系相容性的FT-IR及DSC研究

谢瑞; 宋默; 杨秉新; 姜炳政

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苯乙烯-丁二烯-苯乙烯/聚乙烯基甲基醚共混体系相容性的FT-IR及DSC研究

研究论文 | 更新时间：2021-03-19

- 苯乙烯-丁二烯-苯乙烯/聚乙烯基甲基醚共混体系相容性的FT-IR及DSC研究
- FT-IR,DSC STUDY ON THE MISCIBILITY OF STYRENE-BUTADIENE- STYRENE TRIBLOCK COPOLYMER (SBS)/POLY (VINYL METHYL ETHER) (PVME) BLENDS
- 高分子学报 1993年第5期页码：556-562
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- 纸质出版日期：1993-10-20，
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谢瑞, 宋默, 杨秉新, 姜炳政. 苯乙烯-丁二烯-苯乙烯/聚乙烯基甲基醚共混体系相容性的FT-IR及DSC研究[J]. 高分子学报, 1993,(5):556-562.

XIE Ru, SONG Mo, YANG Hng-xin, JIANG Hng-zheng. FT-IR,DSC STUDY ON THE MISCIBILITY OF STYRENE-BUTADIENE- STYRENE TRIBLOCK COPOLYMER (SBS)/POLY (VINYL METHYL ETHER) (PVME) BLENDS[J]. Acta Polymerica Sinica, 1993,(5):556-562.
谢瑞, 宋默, 杨秉新, 姜炳政. 苯乙烯-丁二烯-苯乙烯/聚乙烯基甲基醚共混体系相容性的FT-IR及DSC研究[J]. 高分子学报, 1993,(5):556-562. DOI：

XIE Ru, SONG Mo, YANG Hng-xin, JIANG Hng-zheng. FT-IR,DSC STUDY ON THE MISCIBILITY OF STYRENE-BUTADIENE- STYRENE TRIBLOCK COPOLYMER (SBS)/POLY (VINYL METHYL ETHER) (PVME) BLENDS[J]. Acta Polymerica Sinica, 1993,(5):556-562. DOI：

摘要

嵌段高聚物、均聚物共混体系相容性是近年来研究的热点。本工作以光学显微镜、DSC、FT-IR为手段

研究了三嵌段高聚物苯乙烯-丁二烯-苯乙烯(SBS);SBS-48、SBS-30

SBS-28与聚乙烯基甲基醚共混体系的相容性。DSC结果表明

随SBS中PS含量的升高

体系相容性变好

PS段分子量增大

也有助于体系相容。FT-IR结果表明PVME中COCH_3在1100cm-1附近呈现的双峰的相对强度对体系的相容性十分敏感

而由于苯环C—H振动产生的698cm-1峰位却不象PS/PVME体系那样随相容性的改变而有显著的改变。总而言之

嵌段高聚物SBS/均聚物PVME共混体系中

体系的相容性依赖于嵌段高聚物在体系中的组份含量及嵌段高聚物中PS的重量百分含量

PS段分子量的大小对体系相容性也有影响。

Abstract

Miscibility of blends of styrene-butadiene-styrene triblock copolymers SBS-48

SBS-30

SBS-28 and poly (vinyl methyl ethyl ether) (PVME) were investigated by clarity

DSC and FT-IR. From optical clarity and DSC results

the higher the styrene content in SBS and the higher the molecule weight of PS segment were

the better the miscibility of the blends was . From FT-IR results

the relative peak intensity of the 1100 cm-1 region due to COCH3 bond of PVME was sensitive to the miscibility of SBS/PVME

while the peak position of 698 cm-1 re-gion due to C-H out-of-plane bending vibration of phenyl ring in PS was not as sensitive as that in PS/PVME.It can be concluded that the miscibility in SBS/PVME blends is greatly af-fected by the composition of the block copolymers in blends and the composition of styrene in the copolymers. Molecule weight of PS segment in SBS is also important.

关键词

共混共混物相容性玻璃化转变温度Tg嵌段高聚物均聚物浊度FT-IRDSC

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