Preparation and Characterization of Polysulfonamide Statistical Copolymers from Three Aromatic Diami

• 作 者: 刘丽 王维涛 肖长发
• 机 构: School of Materials Science and Engineering,Shanghai University,Key Laboratory of Hollow Fiber Membr
• 出 处: Journal of Shanghai Jiaotong University(Science)
• 发表日期: 2010年01期
• 关键词: phenylene polymerization diamine solubility inherent aromatic copolymer viscosit

Various polysulfonamide(PSA) statistical copolymers were synthesized by polycondensation of three aromatic diamines and terephthaloyl chloride.The inherent viscosities of the resulting PSA copolymers range from 1.54 to 1.66 dL/g.The precipitated PSA copolymers with feed content of p-phenylene diamine(PPD) being less than 50%(mole fraction) can be redissolved in N-methyl-2-pryrrolidone(NMP) or N,N-dimethylacetamide(DMAc) with lithium chloride of wLiCl=0.02.All of the PSA copolymers exhibit enhanced tensile strength in comparison with PSA and still maintain excellent thermal stability in either air or nitrogen atmosphere

Various polysulfonamide (PSA) statistical copolymers were synthesized by polycondensation of three aromatic diamines and terephthaloyl chloride. The inherent viscosities of the resulting PSA copolymers range from 1.54 to 1.66 dL / g. Precipitated PSA copolymers with feed content of p-phenylene diamine (PPD ) is less than 50% (mole fraction) of redissolved in N-methyl-2-pryrrolidone (NMP) or N, N-dimethylacetamide (DMAc) with lithium chloride of wLiCl = in comparison with PSA and still maintain excellent thermal stability in either air or nitrogen atmosphere