STUDIES ON MISCIBILITY OF CARBOXYLATED PPO AND POLYSTYRENE BY FTIR

LIAO Bing; HUANG Yuhui; CHEN Mingcai; CONG Guangmin; SHEN Deyan

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STUDIES ON MISCIBILITY OF CARBOXYLATED PPO AND POLYSTYRENE BY FTIR

Research Article | 更新时间：2021-03-19

- STUDIES ON MISCIBILITY OF CARBOXYLATED PPO AND POLYSTYRENE BY FTIR
- Acta Polymerica Sinica Issue 2, Pages: 222-227(1996)
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- Published：20 April 1996，
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LIAO Bing, HUANG Yuhui, CHEN Mingcai, CONG Guangmin, SHEN Deyan. STUDIES ON MISCIBILITY OF CARBOXYLATED PPO AND POLYSTYRENE BY FTIR. [J]. Acta Polymerica Sinica (2):222-227(1996)
DOI：

LIAO Bing, HUANG Yuhui, CHEN Mingcai, CONG Guangmin, SHEN Deyan. STUDIES ON MISCIBILITY OF CARBOXYLATED PPO AND POLYSTYRENE BY FTIR. [J]. Acta Polymerica Sinica (2):222-227(1996) DOI：

摘要

用傅立叶红外光谱（ＦＴＩＲ）中差示光谱技术研究了具有特殊相行为的羧化聚苯醚（ＣＰＰＯ）和聚苯乙烯（ＰＳ）共混体系特征红外吸收谱带随相区的转变而发生的变化．发现当核化度为８．０ｍｏｌ％时

ＣＰＰＯ／ＰＳ共混体系的红外特征吸收峰的频率位移速率随温度的变化与该体系的特殊相行为（即同时具有ＵＣＳＴ和ＬＣＳＴ）有相互对应关系．研究了随温度变化

共混体系中分子间特殊相互作用的变化．探讨了此共混体系相容和相分离的机理．

Abstract

A difference-spectrum method of FTIR was used to study the variation of characteristic infrared spectral absorption band in carboxylated PPO and polystyrene blends. It was found that vibration frequency shifts of the characteristic infrared absorption bands in CPPO /PS blends

with 8.0% carboxylated contents in CPPO and 50 / 50 ratio of CPPO /PS

varied regularly with raising temperature. It was found that three slopes corresponding to the three temperature ranges: below 190℃

190～220℃ and above 220℃

appeared in frequency-temperature curves for the CPPO/PS blend. These temperature ranges are consistent with the UCST area

the miscible area and the LCST area abtained by our previous works.The variation of interaction between CPPO and PS molecules with raising temperature was studied.The mechanism of phase transformation was discussed.

关键词

ＣＰＰＯ／ＰＳ共混物ＦＴＩＲ差示光谱相分离

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