Batch foaming of carboxylated multiwalled carbon nanotube/poly(ether imide) nanocomposites: The influence of the carbon nanotube aspect ratio on the cellular morphology

被引:13
作者
Yu, Haitao [1 ]
Lei, Yajie [2 ]
Yu, Xuejiang [2 ]
Wang, Xianzhong [2 ]
Liu, Tao [2 ]
Luo, Shikai [1 ,2 ]
机构
[1] Southwest Univ Sci & Technol, Mat Sci & Engn Coll, Mianyang 621010, Sichuan, Peoples R China
[2] China Acad Engn Phys, Inst Chem Mat, Mianyang 621900, Sichuan, Peoples R China
关键词
composites; foams; graphene and fullerenes; nanotubes; porous materials; MOLDED POLYAMIDE-6 NANOCOMPOSITES; MECHANICAL-PROPERTIES; POLYMER COMPOSITES; NUCLEATING-AGENT; CHAIN-EXTENDER; DIOXIDE; POLYLACTIDE; CO2; FABRICATION;
D O I
10.1002/app.42325
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
A series of microcellular poly(ether imide) (PEI) foams and nanocellular carboxylated multiwalled carbon nanotube (MWCNT-COOH)/PEI foams were prepared by the batch foaming method. MWCNT-COOHs with different aspect ratios were introduced into the PEI matrix as heterogeneous nucleation agents to improve the cell morphology of the microcellular PEI foams. The effect of the aspect ratio of the MWCNT-COOHs on the cellular morphology, and gas diffusion is discussed. The results show that with the addition of MWCNT-COOH, the sorption curve showed a slight reduction of carbon dioxide solubility, but the gas diffusion rate could be improved. The proper aspect ratio of MWCNT-COOH could improve the cellular morphology under the same foaming conditions, in which m-MWCNT-COOH (aspect ratio approximate to 1333) was the best heterogeneous nucleation agent. When the foaming temperature was 170 degrees C, the cell size and cell density of nanocellular m-MWCNT-COOH reduced to 180 nm and increased to 1.58 x10(13) cells/cm(3), respectively. (c) 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 42325.
引用
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页数:12
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