Influence of Surface-functionalized Graphene Oxide on the Cell Morphology of Poly（methyl methacrylate） Composite
来源期刊：JOURNAL OF MATERIALS SCIENCE TECHNOLOG2015年第5期
论文作者：Yuwei Wang Xia Liao Yong Luo Qi Yang Guangxian Li
文章页码：463 - 466
摘 要：The surface chemistry of filler is closely related to the structure and morphology of nanocomposite foams.Changing the property of filler is widely used to control the cell structures and functionalize the composite foams.Surface-functionalized graphene oxide（GO-ODA） was prepared by grafting octadecylamine（ODA） on the surface of graphene oxide（GO） to make the filler disperse better in the nanocomposites and have a strong interfacial interaction with polymer matrix.Poly（methyl methacrylate）（PMMA）/GO-ODA nanocomposite foams were obtained by solution blending and foamed using supercritical carbon dioxide（scCO2）.Compared to neat PMMA and PMMA/GO samples,the PMMA/GO-ODA nanocomposite foams showed improved cell structures with smaller size,higher cell density and more homogeneous distribution,which should be attributed to the heterogeneous nucleation caused by well-dispersed GO-ODA nanosheets.This work not only improved the compatibility and interfacial interaction of GO with polymer matrix but also indicated that the modified GO sheets can act as ideal filler to control the cell density,size and size distribution efficiently.
Yuwei Wang1，Xia Liao1，Yong Luo2，Qi Yang1，Guangxian Li1
1. College of Polymer Science and Engineering,State Key Laboratory of Polymer Materials Engineering,Sichuan University2. Analytical and Testing Center,Sichuan University
摘 要：The surface chemistry of filler is closely related to the structure and morphology of nanocomposite foams.Changing the property of filler is widely used to control the cell structures and functionalize the composite foams.Surface-functionalized graphene oxide（GO-ODA） was prepared by grafting octadecylamine（ODA） on the surface of graphene oxide（GO） to make the filler disperse better in the nanocomposites and have a strong interfacial interaction with polymer matrix.Poly（methyl methacrylate）（PMMA）/GO-ODA nanocomposite foams were obtained by solution blending and foamed using supercritical carbon dioxide（scCO2）.Compared to neat PMMA and PMMA/GO samples,the PMMA/GO-ODA nanocomposite foams showed improved cell structures with smaller size,higher cell density and more homogeneous distribution,which should be attributed to the heterogeneous nucleation caused by well-dispersed GO-ODA nanosheets.This work not only improved the compatibility and interfacial interaction of GO with polymer matrix but also indicated that the modified GO sheets can act as ideal filler to control the cell density,size and size distribution efficiently.
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