Supercritical CO2 Foaming of Radiation Cross-Linked Isotactic Polypropylene in the Presence of TAIC
2016-12
Source PublicationMOLECULES
ISSN1420-3049
Volume21Issue:12
Status已发表
DOI10.3390/molecules21121660
AbstractSince 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.
Keywordpolypropylene TAIC radiation cross-linking supercritical carbon dioxide foaming
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[11079048]
WOS Research AreaBiochemistry & Molecular Biology ; Chemistry
WOS SubjectBiochemistry & Molecular Biology ; Chemistry, Multidisciplinary
WOS IDWOS:000392140100054
PublisherMDPI AG
WOS KeywordLOW-DENSITY POLYETHYLENE ; CARBON-DIOXIDE APPROACH ; MECHANICAL-PROPERTIES ; MORPHOLOGY ; POLYMERS ; CRYSTALLIZATION ; IRRADIATION ; BEHAVIORS ; PLASTICS ; LINKING
Original Document TypeArticle
Citation statistics
Document Type期刊论文
Identifierhttps://kms.shanghaitech.edu.cn/handle/2MSLDSTB/1610
Collection物质科学与技术学院
物质科学与技术学院_特聘教授组_吴国忠组
物质科学与技术学院_硕士生
Corresponding AuthorWu, Guo-Zhong
Affiliation
1.Chinese Acad Sci, Shanghai Inst Appl Phys, Jialuo Rd 2019, Shanghai 201800, Peoples R China
2.Univ China Acad Sci, Beijing 100049, Peoples R China
3.ShanghaiTech Univ, Sch Phys Sci & Technol, Haike Rd 100, Shanghai 201210, Peoples R China
First Author AffilicationSchool of Physical Science and Technology
Corresponding Author AffilicationSchool of Physical Science and Technology
Recommended Citation
GB/T 7714
Yang, Chen-Guang,Wang, Mou-Hua,Zhang, Ming-Xing,et al. Supercritical CO2 Foaming of Radiation Cross-Linked Isotactic Polypropylene in the Presence of TAIC[J]. MOLECULES,2016,21(12).
APA Yang, Chen-Guang.,Wang, Mou-Hua.,Zhang, Ming-Xing.,Li, Xiao-Hu.,Wang, Hong-Long.,...&Wu, Guo-Zhong.(2016).Supercritical CO2 Foaming of Radiation Cross-Linked Isotactic Polypropylene in the Presence of TAIC.MOLECULES,21(12).
MLA Yang, Chen-Guang,et al."Supercritical CO2 Foaming of Radiation Cross-Linked Isotactic Polypropylene in the Presence of TAIC".MOLECULES 21.12(2016).
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