Preparation of PMMA/graphene oxide microcellular foams using supercritical carbon dioxide

2015 Global Conference on Polymer and Composite Materials

材料科学;化学

Li, Meijuan^1,2 ; Cheng, Ping^1,2 ; Zhang, Ruizhi^2 ; Luo, Guoqiang^2 ; Shen, Qiang^2 ; Zhang, Lianmeng^2

Department of Chemistry, School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan, Hubei

430070, China^1

State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, Hubei

430070, China^2

关键词: Cell density;    Cellular structure;    Compression strength;    Microcellular foams;    Microstructure characterization;    PMMA matrices;    Polymeric foams;    Supercritical carbon dioxides;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/87/1/012042/pdf
DOI  :  10.1088/1757-899X/87/1/012042

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Microcellular foams have a widely applications in many industries due to their superior properties. In this paper, the polymethymethacrylate (PMMA)/graphene oxide (GO) microcellular foams were prepared by supercritical carbon dioxide as a friendly foaming agent. The effect of graphene oxide amount on cellular structure and mechanical strength of foams had been investigated. Microstructure characterization bases on scanning electron microscopy (SEM). The cell size and cell density were calculated via image analysis. It was found that the average foam cell size was decreased from 20.1 μm to 2.2 μm and the cell density was increased from 2.8×108to 3.3×1010when 1.5wt.% GO sheets were added into PMMA matrix. In addition, the compression strength of polymeric foams was increased from 13 MPa to 39 MPa.