原位改性法制备功能化石墨烯/聚甲基丙烯酸甲酯复合材料及其性能研究

PDF全文下载：  201801014.pdf

文章编号： 16726987（2018）01008406； DOI： 10.16351/j.16726987.2018.01.014

程江龙， 刘延磊， 吴胜明， 孔德玉， 王腾飞， 赵健*

(青岛科技大学 橡塑材料与工程教育部重点实验室，山东 青岛 266042)

摘要： 将Hummers法制备的氧化石墨烯(GO)均匀分散于溶解有聚甲基丙烯酸甲酯（PMMA）的四氢呋喃溶剂(THF)中，反溶剂法得到氧化石墨烯/聚甲基丙烯酸甲酯复合材料。因为超临界CO2对许多低分子物质有较强的溶解能力，可以使大多数聚合物发生溶胀，可实现固态基体中氧化石墨烯的原位改性。通过傅里叶红外光谱（FTIR）、扫描电镜（SEM）对改性效果进行表征；热重量分析(TGA)、差示扫描量热法(DSC)、动态力学分析仪（DMA）等方法表征改性后复合材料的热学、力学性能。结果显示，成功实现了氧化石墨烯在固态聚合物基体中的原位改性。氧化石墨烯与改性后氧化石墨烯均对聚合物基体的力学性能、热学性能起到改善作用。填料含量达到3%（质量分数）时力学强度提高22%~31%，复合材料玻璃化转变温度提高10 ℃左右。

关键词： 氧化石墨烯； 超临界； 复合材料； 原位改性

中图分类号： O 644.22文献标志码： A

引用格式：程江龙， 刘延磊， 吴胜明， 等. 原位改性法制备功能化石墨烯/聚甲基丙烯酸甲酯复合材料及性能研究\[J\]. 青岛科技大学学报（自然科学版）， 2018， 39（1）： 8489.

CHENG Jianglong, LIU Yanlei, WU Shengming, et al. Preparation and properties of functionalized graphene/poly(methyl methacrylate)composites prepared insitu modification\[J\]. Journal of Qingdao University of Science and Technology（Natural Science Edition), 2018, 39(1)： 8489.

Preparation and Properties of Functionalized Graphene/Poly(Methyl

Methacrylate) Composites Prepared Insitu Modification

CHENG Jianglong, LIU Yanlei, WU Shengming, KONG Deyu, WANG Tengfei, ZHAO Jian

(Key Laboratory of RubberPlastics, Ministry of Education, Qingdao University of Science and Technology, Qingdao 266042, China)

Abstract: The graphene oxide/poly (methyl methacrylate) composites were obtained by dissolving graphene oxide (GO) prepared by the Hummers method in tetrahydrofuran (THF) solvent. Poly (methyl methacrylate) (PMMA) was also dissolved in tetrahydrofuran. Because supercritical CO2 has a strong ability to dissolve many low molecular substances, most of polymers can be swollen so that the insitu modification of graphene oxide in solid matrix can be realized. The effect of the modification was characterized by Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM). The thermal and mechanical properties of the composites were characterized by thermogravimetric analysis (TGA), differential scanning calorimetry (DSC)、 dynamic mechanical analysis (DMA).The results show that the insitu modification of graphene oxide in solid polymer matrix is realized successfully.Both graphene oxide and modified graphene both improve oxide enhance thermomechanical properties of polymors. When the content of filler reaches 3%, the mechanical strength  increases by 22%—31%, and the glass transition temperature increases by about 10 ℃ as compared to neat poly (methyl methacrylate).

Key words: graphene oxide; supercritical; composite materials; insitu modification

收稿日期：  20170502

基金项目： 国家自然科学基金项目（51373088）.

作者简介： 程江龙（1993—），男，硕士研究生.*通信联系人.