摘要
本文对脂肪族二元胺(ADA、NH_2(CH_2)_nNH_2、n=2、6、8、10、12),对苯二胺(PPD)和对苯二甲酰氯(TPC)三元芳香-脂肪族共聚酰胺硫酸溶液的溶致液晶性能进行了研究.利用偏光显微镜、小角和宽角X-光衍射确定了该类共聚酰胺溶致液晶中介相的类型随共聚物中脂肪族二胺链单元含量的变化规律.
In this paper the aromatic-aliphatic copolyamides were synthesized from terep-hthalyl chloride (TPC), p-phenyldiamine (PPD) and aliphatic diamines (ADA. H2N-(CH2-)nNH2, n=2,6,8,10, 12) by low temperature solution polycondensation. The effects of the amount of the aliphatic diamine chain unit in copolyamides, inherent viscosity of copolyamides and temperature on the critical concentration of liquid crystalline copolyamides obtained were studied. It was confirmed that the sulfuric acid solution of these copolyamides was smectic if the aliphatic diamine unit in copolyamides was more than 16.7 mol%.
出处
《高分子学报》
SCIE
CAS
CSCD
北大核心
1992年第6期715-720,共6页
Acta Polymerica Sinica
基金
国家自然科学基金
关键词
芳香-脂肪族
共聚酰胺
溶致液晶
Aromatic-aliphatic copolyamide, Lyotropic liquid crystal, Smectic, Nematic
