文章摘要
纳米纤维素晶须/明胶复合膜的制备与结构及性能
Fabrication, Structure and Properties of Cellulose Nanowhiskers/Gelatin Composite Film
  
DOI:10.16865/j.cnki.1000-7555.2017.08.009
中文关键词: 纤维素晶须  明胶  溶胀性能  力学性能
英文关键词: cellulose whiskers  gelatin  swelling property  mechanical property
基金项目:国家自然科学基金资助项目(U1404509,51473150);中国博士后科学基金资助(2015M572118);河南省教育厅项目(15A430044)
作者单位
裴 莹,徐高强,李玉辉,郑学晶,刘 捷,汤克勇 郑州大学 材料科学与工程学院, 河南 郑州 450001 
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中文摘要:
      明胶作为一种生物质材料,具有良好的成膜性能、阻氧性能。然而,明胶韧性差,遇水易溶胀等缺点在很大程度上限制其应用。文中以明胶为基体,纤维素晶须(CW)作为分散相,制备纳米纤维素/明胶生物基复合膜。采用透射电镜、扫描电镜、紫外分光光度计、溶胀及力学性能测试研究复合膜的结构与性能。结果表明,当晶须加入量为15%时,复合膜的溶胀度降低为纯明胶膜的1/4,表明纤维素晶须可改善明胶膜在水中的稳定性;当纤维素晶须含量为9%左右,不仅能改善明胶基体韧性,还提高了明胶基体的强度。
英文摘要:
      Gelatin as a kind of biomass possesses excellent film-forming ability and oxygen barrier property. However, application of gelatin is limited due to its poor toughness and water resistant. In this work, cellulose nanowhiskers/gelatin composite film was fabricated with cellulose whiskers as dispersion phase. The structure and properties of composite film were characterized by TEM, SEM, UV-vis spectroscopy, swelling and mechanical tests. The results indicate that cellulose whiskers improve the mechanical property and stability in water. The swelling ratio of composite film is about 4 folds compared with pure gelatin film when the whiskers content is 15%. Mechanical property of composite film is improved with 9% whiskers addition.
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