电喷射技术制备微/纳米纤维素及其性能研究  

Preparation and performance of micro/nano-cellulose via electric injection technology

作　　者：龚国强[1] 颜慧琼[2] 李嘉诚[1] 陈秀琼[2] 张名楠[1] 冯玉红[1] 林强[2] 

机构地区：[1]海南大学材料与化工学院,海口570228 [2]海南师范大学化学与化工学院,海口571100

出　　处：《化工新型材料》2015年第10期51-54,共4页New Chemical Materials

基　　金：国家自然科学基金(21366010);海南省自然科学基金(213011);海南省教育厅基金项目(HiKj2013-06)

摘　　要：以海南椰子水为主要培养体系,木醋杆菌为菌种,通过添加蔗糖,生物合成了细菌纤维素（BC）。通过添加离子溶剂[BMIM]Cl和助纺剂聚乙烯醇（PVA）考察该纤维素在电喷射技术下的纺丝性能,并采用FT-IR、XRD和SEM对产物的性能进行了表征。结果表明：所制得的BC数均分子量Mn为335673,重均分子量Mw为347662,硫酸水解后的结晶指数为97%。电纺离子溶剂[BMIM]Cl溶解的BC只能得到粒径在150~400nm之间的纳米纤维素颗粒,但是电纺BC/PVA混合溶胶可得到平均直径在250~400nm之间光滑复合纤维。单一的BC不能纺丝,但是它可以以纳米晶体方式分散在PVA纳米纤维中。Bacterial cellulose（BC）was biosynthesized by using Hainan coconut water as the main training system and acetobacter xylinum as the strain with adding the sucrose.The spinning performance of BC via electrical injection technology was investigated by adding ionic solvent of[BMIM]Cl and cospinning agent of polyvinyl alcohol（PVA）.And the properties of spinning product were characterized by means of FT-IR,XRD and SEM.Experimental results showed that Mn and Mwof BC were 335673 and 347662,respectively.Crystallinity index of BC was 97% after acid hydrolysis.Electrospinning of BC/[BMIM]only obtained BC nanoparticles ranging from 150 nm to 400 nm.However,electrospinning of BC/PVA hybrid solutions could obtain smooth composite fibers with mean diameter ranging from 250 nm to 400 nm.Single BC could not be electrospun,but its nanocrystals could be dispersed in PVA nanofibers.

关 键 词：细菌纤维素 离子溶剂 聚乙烯醇 电喷射技术 复合纤维 

分 类 号：TQ352.1[化学工程]