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题名: Supercritical CO2 Foaming of Radiation Cross-Linked Isotactic Polypropylene in the Presence of TAIC
作者: Yang, CG; Wang, MH; Zhang, MX; Li, XH; Wang, HL; Xing, Z; Ye, LF; Wu, GZ
刊名: MOLECULES
出版日期: 2016
卷号: 21, 期号:12, 页码:-
关键词: polypropylene ; TAIC ; radiation cross-linking ; supercritical carbon dioxide ; foaming
DOI: 10.3390/molecules21121660
通讯作者: Wu, GZ (reprint author), Chinese Acad Sci, Shanghai Inst Appl Phys, Jialuo Rd 2019, Shanghai 201800, Peoples R China. ; Wu, GZ (reprint author), ShanghaiTech Univ, Sch Phys Sci & Technol, Haike Rd 100, Shanghai 201210, Peoples R China.
文章类型: 期刊论文
英文摘要: Since the maximum foaming temperature window is only about 4 degrees C for supercritical CO2 (scCO(2)) foaming of pristine polypropylene, it is important to raise the melt strength of polypropylene in order to more easily achieve scCO(2) foaming. In this work, radiation cross-linked isotactic polypropylene, assisted by the addition of a polyfunctional monomer (triallylisocyanurate, TAIC), was employed in the scCO(2) foaming process in order to understand the benefits of radiation cross-linking. Due to significantly enhanced melt strength and the decreased degree of crystallinity caused by cross-linking, the scCO(2) foaming behavior of polypropylene was dramatically changed. The cell size distribution, cell diameter, cell density, volume expansion ratio, and foaming rate of radiation-cross-linked polypropylene under different foaming conditions were analyzed and compared. It was found that radiation cross-linking favors the foamability and formation of well-defined cell structures. The optimal absorbed dose with the addition of 2 wt % TAIC was 30 kGy. Additionally, the foaming temperature window was expanded to about 8 degrees C, making the handling of scCO(2) foaming of isotactic polypropylene much easier.
收录类别: SCI
语种: 英语
WOS记录号: WOS:000392140100054
ISSN号: 1420-3049
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.sinap.ac.cn/handle/331007/26639
Appears in Collections:中科院上海应用物理研究所2011-2017年_期刊论文

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