CAJ | 학술논문

通过干喷湿纺纺丝工艺制得聚丙烯腈(PAN)初生纤维，采用不同的干燥方法获得 PAN 初生纤维干燥样品，考察对比自然晾干、鼓风干燥和冷冻干燥3种方法分别对样品物理特征、表面形貌和内部结构的影响.3种干燥方法均会使初生纤维样品发生收缩，样品截面积和长度均减小，但是变化程度不同.并且3种干燥方法对PAN初生纤维表面形貌、结晶特征、二甲基亚砜(DMSO)残留量以及孔结构产生不同的影响.结果表明冷冻干燥对 PAN 初生纤维的影响最小，可以有效的保留 PAN 初生纤维的原始结构，可用于制备聚丙烯腈初生纤维干燥样品.
통과간분습방방사공예제득취병희정(PAN)초생섬유，채용불동적간조방법획득 PAN 초생섬유간조양품，고찰대비자연량간、고풍간조화냉동간조3충방법분별대양품물리특정、표면형모화내부결구적영향.3충간조방법균회사초생섬유양품발생수축，양품절면적화장도균감소，단시변화정도불동.병차3충간조방법대PAN초생섬유표면형모、결정특정、이갑기아풍(DMSO)잔류량이급공결구산생불동적영향.결과표명냉동간조대 PAN 초생섬유적영향최소，가이유효적보류 PAN 초생섬유적원시결구，가용우제비취병희정초생섬유간조양품.
Polyacrylonitrile (PAN)-spun fibers are obtained by dry jet wet spinning process,different drying methods are used to obtain PAN nascent fibers dried samples.Then studied the effect on physical characteris-tics,surface morphology and internal structure of three methods by contrasting natural drying,air forced dr-ying and freeze-drying.Three methods all caused shrinkage on the nascent fiber samples,cross-sectional area and length of samples were reduced,but with different degree of change.And three drying methods have differ-ent effects on the morphology of the surface of the nascent fiber PAN,crystallization characteristics,the a-mount of residual dimethylsulfoxide (DMSO),and pore structure.The results show that the impact of freeze drying on PAN nascent fibers are minimum,and it can effectively preserve the original structure of PAN nas-cent fibers spun fibers,so it can be used for sample preparation for testing.