Foaming Behavior of Compatible PMMA/[C12 MIM][PF6] System by Supercritical CO2

doi:10.3969/j.issn.0251-0790.2012.01.029

Chem. J. Chinese Universities ›› 2012, Vol. 33 ›› Issue (01): 172.doi: 10.3969/j.issn.0251-0790.2012.01.029

• Polymer Chemistry • Previous Articles Next Articles

Foaming Behavior of Compatible PMMA/[C₁₂ MIM][PF₆] System by Supercritical CO₂

TONG Fang-Fang¹, XU Hong², YU Jian², WEN Li-Xiong¹, ZHANG Jun², HE Jia-Song²

1. State Key Lab of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China;
2. Beijing National Laboratory for Molecular Science(BNLMS), Key Laboratory of Engineering Plastics, Joint Laboratory of Polymer Science and Materials, Institute of Chemistry, Chinese Academy of Science, Beijing 100190, China

Received:2011-04-06 Online:2012-01-10 Published:2011-12-20
Contact: Jian Yu E-mail:yuj@iccas.ac.cn; wenlx@mail.buct.edu.cn

Abstract

Abstract: A series of compatible blends of poly(methyl methacrylate) with an ionic liquid(IL), 1-dodecyl-3-methylimidazolium hexafluorophosphate[C₁₂ MIM][PF₆], was prepared by melt blending. The blends were foamed with supercritical CO₂ as the blowing agent via a rapid pressure-quenching process. By adding IL, the CO₂ absorption of PMMA was increased, and the glass transition temperature was lowered. The effects of IL on the foaming behavior of PMMA depended on foaming conditions. When the foaming temperature and pressure were low, pure PMMA could not be foamed, while the addition of IL facilitated the formation of cells. On the other hand, pure PMMA could be foamed at higher temperatures and pressures, and adding IL further increased the cell size of the foamed samples; however, the cell size was still within the micron-meter scale and had a narrow distribution.

Key words: [C₁₂ MIM][PF₆]ionic liquid, Poly(methyl methacrylate)(PMMA), Supercritical carbon dioxide, Foaming behavior

CLC Number:

O631

TrendMD:

TONG Fang-Fang, XU Hong, YU Jian, WEN Li-Xiong, ZHANG Jun, HE Jia-Song. Foaming Behavior of Compatible PMMA/[C₁₂ MIM][PF₆] System by Supercritical CO₂[J]. Chem. J. Chinese Universities, 2012, 33(01): 172.

References

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Foaming Behavior of Compatible PMMA/[C₁₂ MIM][PF₆] System by Supercritical CO₂

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