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| A new promising nucleating agent for polymer foaming: effects of hollow molecular-sieve particles on polypropylene supercritical CO2 microcellular foaming | |
| 2018 | |
| Source Publication | RSC ADVANCES
 |
| ISSN | 2046-2069 |
| Volume | 8Issue:36Pages:20061-20067 |
| Status | 已发表 |
| DOI | 10.1039/c8ra03071e |
| Abstract | 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. |
| Indexed By | SCI ; SCIE ; EI |
| Language | 英语 |
| Funding Project | National Natural Science Foundation of China[11079048] |
| WOS Research Area | Chemistry |
| WOS Subject | Chemistry, Multidisciplinary |
| WOS ID | WOS:000434390100020 |
| Publisher | ROYAL SOC CHEMISTRY |
| EI Accession Number | 20182405296420 |
| EI Keywords | Carbon dioxide ; Cells ; Cellular automata ; Cytology ; Density (specific gravity) ; Mechanical properties ; Molecular sieves ; Nucleation ; Polypropylenes ; Sieves ; Size distribution ; Supercritical fluid extraction ; Tensile strength |
| EI Classification Number | Biological 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 Keyword | CARBON-DIOXIDE ; NANOCOMPOSITE FOAMS ; ISOTACTIC POLYPROPYLENE ; SIZE DISTRIBUTION ; IMPACT PROPERTIES ; CELL MORPHOLOGY ; EXTRUSION ; RADIATION ; CRYSTALLIZATION ; COMPOSITES |
| Original Document Type | Article |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | https://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 Author | Wu, Guozhong |
| 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, Shanghai 200031, Peoples R China |
| First Author Affilication | School of Physical Science and Technology |
| Corresponding Author Affilication | School 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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