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Study of different effect on foaming process of biodegradable bionolle in supercritical carbon dioxide
Author(s) -
Xu Qun,
Peng Qi,
Ni Wei,
Hou Zhenzhong,
Li Jinge,
Yu Long
Publication year - 2006
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.23796
Subject(s) - supercritical fluid , crystallinity , supercritical carbon dioxide , saturation (graph theory) , materials science , cabin pressurization , chemical engineering , carbon dioxide , composite material , chemistry , organic chemistry , mathematics , combinatorics , engineering
Microcellular foaming of biodegradable Bionolle in supercritical CO 2 has been produced. The effects of a series of variable factors, such as saturation temperature, saturation pressure, and depressurization time and step on the foam structures and density, were studied through measurement of density and SEM observation. The experimental results show that higher saturation temperatures lead to an increase in bulk densities; and different depressurization time and step result in different product cell morphology. In addition, at some saturation temperature, the orientation of the cells can be found in the product morphology. XRD experimental results show that the foaming treatment with SC CO 2 increased the crystallinity of Bionolle. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 100: 2901–2906, 2006