ICCAS OpenIR
An investigation on the cell nucleation and cell growth of microcellular foaming by means of dual depressurization
Sun, XH; Li, G; Liao, X; He, JS
2004-02-01
Source PublicationACTA POLYMERICA SINICA
ISSN1000-3304
Issue1Pages:93-97
AbstractThe cell nucleation and cell growth of microcellular foaming in supercritical CO2 pressure quench process was investigated by means of dual depressurization and cooling. Cyclic Olefin Copolymer (COC) was saturated under supercritical CO2 circumstance, and then the system was depressurized to an intermediate pressure. After that, four methods of re-depressurization and cooling were adopted. Several novel cell structures were prepared in this way, such as cells with transitional layers and bimodal-size-distribution cells. It was found that most of the nuclei disappear or coalesce during cell growth process with only a small fraction growing to stable cells, and the final cell structure strongly depends. on the cell growth process. Dual nucleation occurs only in a certain depressurization range. Final cell structures obtained in dual depressurization are closely correlative to the solubility variation of CO2 under corresponding pressures.
KeywordSupercritical Co2 Microcellular Foaming Cell Nucleation And Growth Cell Structure Cyclic Olefin Copolymer
Indexed BySCI
Language英语
WOS IDWOS:000188968000019
PublisherSCIENCE CHINA PRESS
Citation statistics
Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/82274
Collection中国科学院化学研究所
Corresponding AuthorSun, XH
AffiliationChinese Acad Sci, Inst Chem, Ctr Mol Sci, State Key Lab Engn Plast, Beijing 100080, Peoples R China
Recommended Citation
GB/T 7714
Sun, XH,Li, G,Liao, X,et al. An investigation on the cell nucleation and cell growth of microcellular foaming by means of dual depressurization[J]. ACTA POLYMERICA SINICA,2004(1):93-97.
APA Sun, XH,Li, G,Liao, X,&He, JS.(2004).An investigation on the cell nucleation and cell growth of microcellular foaming by means of dual depressurization.ACTA POLYMERICA SINICA(1),93-97.
MLA Sun, XH,et al."An investigation on the cell nucleation and cell growth of microcellular foaming by means of dual depressurization".ACTA POLYMERICA SINICA .1(2004):93-97.
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