STRUCTURAL IDENTIFICATION METHOD OF AROMATIC POLYAMIDE FIBER

King Shie-gao; Li Huei-ming; Fu Shiu-chen

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STRUCTURAL IDENTIFICATION METHOD OF AROMATIC POLYAMIDE FIBER

Research Article | 更新时间：2021-03-19

- STRUCTURAL IDENTIFICATION METHOD OF AROMATIC POLYAMIDE FIBER
- Acta Polymerica Sinica Issue 2, Pages: 65-73(1979)
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- Published：20 April 1979，
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King Shie-gao, Li Huei-ming, Fu Shiu-chen. STRUCTURAL IDENTIFICATION METHOD OF AROMATIC POLYAMIDE FIBER. [J]. Acta Polymerica Sinica (2):65-73(1979)
DOI：

King Shie-gao, Li Huei-ming, Fu Shiu-chen. STRUCTURAL IDENTIFICATION METHOD OF AROMATIC POLYAMIDE FIBER. [J]. Acta Polymerica Sinica (2):65-73(1979) DOI：

摘要

用红外光谱方法分析了聚对苯甲酰胺(Ⅰ)和聚对苯二甲酰对苯二胺(Ⅱ)的谱带特征及其与结构的关系

指出了两者的区别

并用二向色性观察了薄膜的取向态

改进了化学分析方法

从(Ⅱ)的水解产物中分离和鉴定了对苯二甲酸和对苯二胺

确定了Kevlar-49纤维的结构属于(Ⅱ)

还用差热分析方法比较了T_m和T_d等数据。

Abstract

The relationship between IR characteristic band and the structure of poly (p-benzamide) -(Ⅰ) and poly (p-phenylene terephthalamide)-(Ⅱ) has been studied. We have indicated the differences between (Ⅰ) and (Ⅱ). The oriented state of film (Ⅱ) has been observed by IE dichroism. The chemical analysis method has been improved. Terephthalic acid and terephthalic amine separated from the hydrolyzate were obained and identified respectively. In such way we are sure that Kevlar-49 fiber has the structure of (Ⅱ). Using DTA method

Td and so on has been obtained from DTA spectrum.

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