用高分子量微生物纤维素制备超细高强纤维纺丝工艺的研究  

Research on the preparation of super slim and strong fiber with high molecular bacterial cellulose

作　　者：张丽改 张秀超[1] 代永强[1] 张双琨[1] 唐卫华[1] 金日光[1] 

机构地区：[1]北京化工大学,北京100029

出　　处：《化工新型材料》2014年第10期63-66,共4页New Chemical Materials

摘　　要：微生物纤维素粉末为原料,用LiCl/DMAC作为溶剂制得纺丝液,通过喷丝及多级凝固浴凝固成型,在不同的牵伸倍数下制备超细高强度再生纤维并对其机械性能、结晶度、晶粒尺寸、形貌等进行了系统的研究。其结果表明：第一凝固浴中采用负牵伸为50%时,所得的初生纤维表面光滑、结晶度高、直径细、力学性能强;在第二凝固浴和第三凝固浴中采用总的牵伸倍数为1.16倍时,所制备的纤维综合性能较好,细度为7~8微米,断裂强度达到1.0576个GPa,大大超过了同类天然纤维的强度。A spinning dope was prepared from bacterial cellulose with LiC1/DMAC as a solvent and was spun into bacterial cellulose fiber at different drawing . The crystallinity,morphology and mechanical properties were studied. The re suits showed that with the stretch ration of-50 %, the fiber were fairly good. At the second and third coagulation bath, with the elevating stretch ration the fiber became smooth, the crystallinity was rose. The structure and properties of the fiber were the best when the drawing was 1.16.

关 键 词：微生物纤维素纤维 纺丝 牵伸 结构 性能 

分 类 号：TQ340.64[化学工程—化纤工业]