Aromatic polyamides with pendent acetoxybenzamide groups and thin films made therefrom

被引：72
作者：
Sava, I
Iosip, MD
Bruma, M
Hamciuc, C
Robison, J
Okrasa, L
Pakula, T
机构：
[1] Inst Macromol Chem, Iasi 6600, Romania
[2] Tyco Elect Corp, Menlo Pk, CA 94025 USA
[3] Max Planck Inst Polymer Res, D-55021 Mainz, Germany
来源：
EUROPEAN POLYMER JOURNAL | 2003年 / 39卷 / 04期
关键词：
aromatic polyamides; acetoxybenzamide group; oxadiazole ring; thin films;
D O I：
10.1016/S0014-3057(02)00295-1
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
New aromatic polyamides containing 1,3,4-oxadiazole or benzonitrile units in the main chain and 5-(4-acetoxybenzamido) groups in the side chain have been synthesized and their properties have been characterized and compared with those of related polyamides and polyoxadiazole-amides. These polymers show good thermal stability, with initial decomposition temperature being at about 300 degreesC and glass transition temperature in the range of 260-280 degreesC. They are easily soluble in certain solvents such as N-methylpyrrolidinone (NMP), N,N'-dimethylacetamide (DMA) and N,N'-dimethylformamide (DMF) and can be cast from solutions into thin flexible films. The polymer films had tensile strengths in the range of 77-97 MPa, tensile moduli in the range of 2.3-2.6 GPa and elongation at break values ranging from 6% to 24%. One of the polymers containing the 1,3,4-oxadiazole ring exhibited blue fluorescence. (C) 2002 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：725 / 738
页数：14
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