高等学校化学学报

高等学校化学学报 ›› 2013, Vol. 34 ›› Issue (3): 692.doi: 10.7503/cjcu20120685

• 高分子化学 • 上一篇    下一篇

氧化石墨烯增强卡拉胶复合膜的制备与性能

左萍萍, 张玉龙, 冯华峰, 夏玮, 张文清, 王铭章   

  1. 华东理工大学化学与分子工程学院, 上海 200237
  • 收稿日期:2012-07-19 出版日期:2013-03-10 发布日期:2013-02-18
  • 通讯作者: 夏玮,女,博士,副教授,主要从事天然产物研究与应用.E-mail:xiawei1999@ecust.edu.cn E-mail:xiawei1999@ecust.edu.cn
  • 基金资助:

    国家科技支撑计划(批准号:2010BAK67B15)资助.

Fabrication and Properties of Graphene Oxide-reinforced Carrageenan Film

ZUO Ping-Ping, ZHANG Yu-Long, FENG Hua-Feng, XIA Wei, ZHANG Wen-Qing, WANG Ming-Zhang   

  1. School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, China
  • Received:2012-07-19 Online:2013-03-10 Published:2013-02-18
  • Contact: wei E-mail:xiawei1999@ecust.edu.cn

PDF (PC)

被引次数

15

摘要：

在Hummers法基础上制得了氧化石墨烯(GO), 采用流延法制备了氧化石墨烯/κ-卡拉胶(GO/κ-Car)复合膜材料. 结合红外光谱、 扫描电子显微镜及热重分析对其结构进行表征. 探讨了不同条件所得膜的成膜性、 溶解性、 透气性和力学性能, 得到性质稳定GO/κ-Car复合膜的制备条件为15.0 g 3%的κ-Car溶液、0.040 g GO粉末及5.0 g 8%的PVA溶液于75 ℃搅拌混合5 h后, 流延铺平, 于30 ℃烘干6.5 h. GO质量分数为5%的GO/κ-Car复合膜的最大负荷、 拉伸强度及杨氏模量分别是对照组κ-Car膜的1.5倍、 1.5倍和1.6倍. 同时, GO/κ-Car复合膜具有较强的透气性能, 且保留了κ-Car清除羟基自由基的生物性能.

关键词: κ-卡拉胶, 氧化石墨烯, 复合膜, 性能

Abstract:

Graphene oxide(GO) was synthesized using a modified Hummer's method. GO and κ-Carra-geenan(κ-Car) film(GO/κ-Car film) was prepared via tape casting and characterized by IR, SEM, and TGA. We optimized the formula and preparation conditions of GO/κ-Car film by single-factor experiment to obtain the proper appearance, solubility, water vapor permeation and mechanical properties. The stable film was fabricated as follows: 15.0 g 3% κ-Car solution, 0.040 g GO powder and 5.0 g 8%PVA solution were mixed by intensely stirring for 5 h at 75 ℃. The mixture was then cast evenly, kept at 30 ℃ for 6.5 h and peeled off as a free-standing film. Compared with the κ-Car film, the mechanical properties of the GO/κ-Car film were significantly improved. With incorporation of 5.0 % GO, the peak load, tensile strength and tensile modulus of the GO/κ-Car film are improved by 1.5-fold, 1.5-fold and 1.6-fold, respectively. Meanwhile, GO/κ-Car film has good water vapor permeability as well as hydroxyl radical scavenging activity.

Key words: κ-Carrageenan, Graphene oxide, Composite film, Property

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