【摘要】 为制备兼具阻燃和吸湿性能的纤维,采用N-甲基吗啉-N-氧化物(NMMO)水溶液为共溶剂,分别将纤维素(cellulose)和聚芳砜酰胺(PSA)溶解后进行共混制备纺丝液,通过干喷湿法纺丝制备PSA/cellulose共混纤维,并对纺丝液及共混纤维的结构和性能进行表征与分析。结果表明:NMMO对PSA具有良好的溶解性能,纺丝液均质、稳定,制备的共混纤维呈现出PSA富集于纤维表层的类皮-芯结构; PSA/cellulose纤维具有良好的阻燃性能、吸湿性能和力学性能,当纤维素质量分数达到30%时,共混纤维仍可达到阻燃纤维标准,其断裂强度为2. 08 c N/dtex,无需后道牵伸处理就能达到较高的强度,此时PSA/cellulose纤维的回潮率提高为8%,具有良好的可染性。更多还原

【Abstract】 In order to prepare fibers with flame retardant property and good hygroscopicity, Nmethylmorpholine-N-oxide monohydrate( NMMO·H2 O) was used as co-solvent to dissolve aromatic polysulfonamide( PSA) and cellulose,and the PSA/cellulose blend fibers were fabricated by dry-jet wet spinning. The structure and properties of spinning solution and blended fibers were characterized and analyzed. It is found that NMMO·H2 O can dissolve PSA well,and the spinning solution is homogeneous and stable. An analogous ″sheath-core″ morphology is observed in the fibers as PSA distributed more in the sheath domain. The flame retardant property,moisture absorption ability and the mechanical property of the PSA/cellulose blended fibers are good. When the cellulose content is 30% in the blend fiber,the blend fibers still meet the requirement of flame retardant fiber standards. The tensile strength of the blend fiber is up to 2. 08 cN/dtex,which shows a good tensile strength without post treatment. The moisture regain of PSA/cellulose fibers is up to 8%,and the dyeability is also improved.更多还原