化工进展 ›› 2018, Vol. 37 ›› Issue (04): 1584-1589.DOI: 10.16085/j.issn.1000-6613.2017-1188

• 精细化工 • 上一篇    下一篇

聚氨酯丙烯酸酯浸渍固化对淀粉-纤维素复合膜性能的影响

江慧华1, 尚小琴1,2, 刘鹏1,2, 赖雅平1,2   

  1. 1 广州大学化学化工学院, 广东 广州 510006;
    2 广东省节能环保精细化学品工程技术研究开发中心, 广东 广州 510006
  • 收稿日期:2017-06-14 修回日期:2017-08-01 出版日期:2018-04-05 发布日期:2018-04-05
  • 通讯作者: 尚小琴,教授,研究方向为天然产物改性和精细化工。
  • 作者简介:江慧华(1992-),女,硕士研究生。
  • 基金资助:
    国家自然科学基金(21146011)及广州市科技计划(201610010019)项目。

Effect of impregnation-solidification of polyurethane acrylate on the properties of starch-cellulose composite films

JIANG Huihua1, SHANG Xiaoqin1,2, LIU Peng1,2, LAI Yaping1,2   

  1. 1 School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, Guangdong, China;
    2 Energy Saving and Environmental Protection Fine Chemicals Engineering Center of Guangdong Province, Guangzhou 510006, Guangdong, China
  • Received:2017-06-14 Revised:2017-08-01 Online:2018-04-05 Published:2018-04-05

摘要: 利用聚氨酯丙烯酸酯树脂(PUA)对淀粉-纤维素膜进行改性,以改善材料性能。先以玉米淀粉和纤维素为主要原料,在无机盐氯化锌水溶液中溶解,用流延法制备淀粉-纤维素混合膜(RSC);再以PUA为浸渍树脂,采用浸渍固化法制备淀粉-纤维素-聚氨酯丙烯酸酯复合膜(RSC-PUA),考察树脂浓度、光固化时间等因素对复合膜力学性能、吸水性能的影响,并通过扫描电镜、X射线衍射仪、热重分析等手段表征复合膜形貌和结构。实验结果表明:最适宜树脂质量分数为30%,光固化时间为120s;RSC-PUA复合膜比RSC膜拉伸强度提高2.4倍,断裂伸长率提高6倍,吸水率降低了53.6%,热裂解温度增高113℃。以上结果表明,经PUA树脂改性后的复合膜的力学性能、耐湿性、热稳定性提高。

关键词: 淀粉, 纤维素, 氯化锌水溶液, 复合膜, 浸渍固化, 性能

Abstract: The polyurethane acrylate(PUA) was used to reinforce the starch/cellulose film(RSC),and to improve the properties of composite film. Specifically,the RSC film was prepared firstly by solution-casting method,which dissolved corn starch and cellulose in zinc chloride aqueous solution and casted the film by alcohol/water solution. After that,the RSC film was soaked in PUA/acetone solution for 24 hours to prepare RSC-PUA film. For the RSC-PUA composite film,the effects of PUA concentration and light curing time on the mechanical properties and the water absorption properties of composite films were investigated. The scanning electron microscopy(SEM),the X-ray diffraction(XRD),and the thermogravimetric analysis(TG-DTA) were used to detect the morphology and structure. The results showed that the optimal resin concentration was 30% and the light curing time was 120s. Under these conditions,the tensile strength and the elongation of the RSC-PUA composite film were 2.4 times and 6 times higher than those of the RSC film,respectively. Moreover,the water absorption rate of RSC-PUA film decreased by 53.6%,and the thermal degradation temperature increased to 113℃. These results showed that,when RSC film was reinforced by PUA,the mechanical properties,moisture resistance and thermal stability of the composite films were improved.

Key words: starch, cellulose, zinc chloride aqueous solution, composite film, impregnation curing, property

中图分类号: 

京ICP备12046843号-2;京公网安备 11010102001994号
版权所有 © 《化工进展》编辑部
地址:北京市东城区青年湖南街13号 邮编:100011
电子信箱:hgjz@cip.com.cn
本系统由北京玛格泰克科技发展有限公司设计开发 技术支持:support@magtech.com.cn