CAS OpenIR  > 中科院上海应用物理研究所2011-2018年
A new promising nucleating agent for polymer foaming: effects of hollow molecular-sieve particles on polypropylene supercritical CO2 microcellular foaming
Yang, CG; Wang, MH; Xing, Z; Zhao, Q; Wang, ML; Wu, GZ
2018
Source PublicationRSC ADVANCES
ISSN2046-2069
Volume8Issue:36Pages:20061-20067
Subtype期刊论文
AbstractBecause polypropylene (PP) foam normally exhibits nonuniform cell size and cracked cellular structure, a narrow cell-size distribution and a well-defined morphology are always the focus of PP foaming technology. In this work, hollow molecular-sieve (MS) particles were applied as a potential nucleating agent in supercritical carbon dioxide (scCO(2)) foaming of PP. It was observed that the addition of MS particles largely narrowed the cell-size distribution. The resultant PP/MS foams exhibited significant concurrent enhancement in their cell density and mechanical properties: the cell density increased remarkably, by approximately 10 times, and the tensile strength increased from 6.1MPa to 12.6 MPa. The hollow-structure MS particles resulted in a higher heterogeneous nucleation efficiency in the PP foaming process. We believe that the trapping of CO2 in the hollow holes of MS particles largely increased the solubility CO2 in PP and a number of gas cavities were formed. The existence of gas cavities reduced the energy barrier of heterogeneous nucleation, favoring the formation of a well-defined cellular structure. Additionally, the regular-hexagon shape of the cells might endow the PP foam with better mechanical properties compared with a circular cell shape.
KeywordCarbon-dioxide Nanocomposite Foams Isotactic Polypropylene Size Distribution Impact Properties Cell Morphology Extrusion Radiation Crystallization Composites
DOI10.1039/c8ra03071e
Indexed BySCI
Language英语
WOS IDWOS:000434390100020
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/28908
Collection中科院上海应用物理研究所2011-2018年
Affiliation1.Yang, CG
2.Wang, MH
3.Xing, Z
4.Zhao, Q
5.Wang, ML
6.Wu, GZ
Recommended Citation
GB/T 7714
Yang, CG,Wang, MH,Xing, Z,et al. A new promising nucleating agent for polymer foaming: effects of hollow molecular-sieve particles on polypropylene supercritical CO2 microcellular foaming[J]. RSC ADVANCES,2018,8(36):20061-20067.
APA Yang, CG,Wang, MH,Xing, Z,Zhao, Q,Wang, ML,&Wu, GZ.(2018).A new promising nucleating agent for polymer foaming: effects of hollow molecular-sieve particles on polypropylene supercritical CO2 microcellular foaming.RSC ADVANCES,8(36),20061-20067.
MLA Yang, CG,et al."A new promising nucleating agent for polymer foaming: effects of hollow molecular-sieve particles on polypropylene supercritical CO2 microcellular foaming".RSC ADVANCES 8.36(2018):20061-20067.
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