A new promising nucleating agent for polymer foaming: effects of hollow molecular-sieve particles on polypropylene supercritical CO2 microcellular foaming
Yang, Chenguang1,2,3; Wang, Mouhua1; Xing, Zhe1; Zhao, Quan1; Wang, Minglei1; Wu, Guozhong1,3
2018
Source PublicationRSC ADVANCES
ISSN2046-2069
Volume8Issue:36Pages:20061-20067
Status已发表
DOI10.1039/c8ra03071e
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.
Indexed BySCI ; EI
Language英语
Funding ProjectNational Natural Science Foundation of China[11079048]
WOS Research AreaChemistry
WOS SubjectChemistry, Multidisciplinary
WOS IDWOS:000434390100020
PublisherROYAL SOC CHEMISTRY
EI Accession Number20182405296420
EI KeywordsCarbon dioxide ; Cells ; Cellular automata ; Cytology ; Density (specific gravity) ; Mechanical properties ; Molecular sieves ; Nucleation ; Polypropylenes ; Sieves ; Size distribution ; Supercritical fluid extraction ; Tensile strength
EI Classification NumberBiological Materials and Tissue Engineering:461.2 ; Biomechanics, Bionics and Biomimetics:461.3 ; Computer Software, Data Handling and Applications:723 ; Chemical Operations:802.3 ; Chemical Agents and Basic Industrial Chemicals:803 ; Inorganic Compounds:804.2 ; Organic Polymers:815.1.1 ; Mathematics:921 ; Mathematical Statistics:922.2 ; Physical Properties of Gases, Liquids and Solids:931.2 ; Crystal Growth:933.1.2 ; Materials Science:951
WOS KeywordCARBON-DIOXIDE ; NANOCOMPOSITE FOAMS ; ISOTACTIC POLYPROPYLENE ; SIZE DISTRIBUTION ; IMPACT PROPERTIES ; CELL MORPHOLOGY ; EXTRUSION ; RADIATION ; CRYSTALLIZATION ; COMPOSITES
Original Document TypeArticle
Citation statistics
Cited Times:13[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttps://kms.shanghaitech.edu.cn/handle/2MSLDSTB/23086
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, Guozhong
Affiliation1.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, Shanghai 200031, 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, Chenguang,Wang, Mouhua,Xing, Zhe,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, Chenguang,Wang, Mouhua,Xing, Zhe,Zhao, Quan,Wang, Minglei,&Wu, Guozhong.(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, Chenguang,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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