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现代化工  2020, Vol. 40 Issue (8): 162-166,172    DOI: 10.16606/j.cnki.issn0253-4320.2020.08.034
  科研与开发 本期目录 | 过刊浏览 | 高级检索 |
不同凝固浴对纤维素膜特征影响的研究
杨浩1,3, 陈琪1, 马新华2, 阎杰1, 郭剑亮2, 林海琳1
1. 仲恺农业工程学院化学化工学院, 广东 广州 510225;
2. 广东地球土壤研究院, 广东 广州 510385;
3. 广州市农用化学品高效利用重点实验室, 广东 广州 510225
Effects of different coagulation baths on characteristics of cellulose membrane
YANG Hao1,3, CHEN Qi1, MA Xin-hua2, YAN Jie1, GUO Jian-liang2, LIN Hai-lin1
1. College of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China;
2. Guangdong Institute of World Soil Resources, Guangzhou 510385, China;
3. Guangzhou Key Laboratory for Efficient Utilization of Agricultural Chemicals, Guangzhou 510225, China
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摘要 以棉浆板为纤维素原料、ZnCl2溶液为溶剂,分别以水、甲醇、乙醇、丙酮为凝固浴,通过相转化法制备了4种纤维素膜。通过膜的微观形貌对比分析了其形成机理,测定了不同膜在水通量、孔隙率及干燥后力学性能的差异。结果表明,4种膜内部均为纤维网状结构,其中以水为凝固浴制得的膜的内部纤维较为舒展、粗大,表皮为多孔状;而以有机溶剂制得的膜的内部纤维为卷曲、结团状,且出现指状孔,表皮为致密光滑状。4种膜的FT-IR、XRD、TG表征结果无显著差异,均由纤维素Ⅰ型变为纤维素Ⅱ型,结晶度降低,热稳定性降低30℃左右,残碳量增高。
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杨浩
陈琪
马新华
阎杰
郭剑亮
林海琳
关键词:  氯化锌  纤维素  纤维素膜  凝固浴  多孔结构    
Abstract: Four kinds of cellulose membranes are manufactured from cotton pulp board through the phase inversion method,with ZnCl2 solution as solvent,and water,methanol,ethanol and acetone as coagulation baths,respectively.The microstructure of the membranes is observed and the formation mechanism is analyzed.Sequentially,the differences of those membranes in water flux,porosity and mechanical properties after drying are determined.The results show that the inner structure of all four membranes is a fibrous network structure.The membrane made with water as a coagulation bath has relatively stretched and thick internal fibers,as well as a porous skin,while the membrane made with organic solvents possesses curled and clumped internal fibers with finger-shaped pores,and dense and smooth skin.There is no significant differences among the four kinds of membranes in FT-IR,XRD and TG characterization.Compared with cotton linter,the membrane's crystal form changes from cellulose I to cellulose Ⅱ,its crystallinity decreases,its thermal stability decreases by about 30℃,and the residual carbon amount within the membrane increases.
Key words:  zinc chloride    cellulose    cellulose membrane    coagulation bath    porous structure
收稿日期:  2019-10-18      修回日期:  2020-06-08          
O636.1  
基金资助: 广东省科技计划(2014A050503065,2015B020215012);广东省农业科技创新联盟建设(3187);广东省产学研协同创新重大专项资助项目(201604020074)
通讯作者:  林海琳(1964-),女,博士,教授,主要从事生物质材料的加工利用的研究,通讯联系人,hailin0008@126.com。    E-mail:  hailin0008@126.com
作者简介:  杨浩(1995-),男,硕士研究生,研究方向为纤维素膜的制备与应用,yanghao.yang@qq.com
引用本文:    
杨浩, 陈琪, 马新华, 阎杰, 郭剑亮, 林海琳. 不同凝固浴对纤维素膜特征影响的研究[J]. 现代化工, 2020, 40(8): 162-166,172.
YANG Hao, CHEN Qi, MA Xin-hua, YAN Jie, GUO Jian-liang, LIN Hai-lin. Effects of different coagulation baths on characteristics of cellulose membrane. Modern Chemical Industry, 2020, 40(8): 162-166,172.
链接本文:  
https://www.xdhg.com.cn/CN/10.16606/j.cnki.issn0253-4320.2020.08.034  或          https://www.xdhg.com.cn/CN/Y2020/V40/I8/162
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