A new promising nucleating agent for polymer foaming: effects of hollow molecular-sieve particles on polypropylene supercritical CO2 microcellular foaming

doi:10.1039/c8ra03071e

CORC > 上海应用物理研究所 > 中国科学院上海应用物理研究所 > 中科院上海应用物理研究所2011-2017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
刊名	RSC ADVANCES
	2018
卷号	8 期号:36 页码:20061-20067
关键词	Carbon-dioxide Nanocomposite Foams Isotactic Polypropylene Size Distribution Impact Properties Cell Morphology Extrusion Radiation Crystallization Composites
ISSN号	2046-2069
DOI	10.1039/c8ra03071e
文献子类	期刊论文
英文摘要	Because 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.
语种	英语
WOS记录号	WOS:000434390100020
内容类型	期刊论文
源URL	[http://ir.sinap.ac.cn/handle/331007/28908]
专题	上海应用物理研究所_中科院上海应用物理研究所2011-2017年
作者单位	1.Yang, CG 2.Wang, MH 3.Xing, Z 4.Zhao, Q 5.Wang, ML 6.Wu, GZ
推荐引用方式 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.