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Solubility of carbon dioxide in polyethylene/titanium dioxide composite under high pressure and temperature
Author(s) -
Areerat Surat,
Hayata Yusuke,
Katsumoto Ryuichi,
Kegasawa Tadahiro,
Egami Hideo,
Ohshima Masahiro
Publication year - 2002
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.10944
Subject(s) - solubility , carbon dioxide , polyethylene , low density polyethylene , titanium dioxide , materials science , composite number , polymer , chemical engineering , composite material , chemistry , organic chemistry , engineering
Solubility of carbon dioxide (CO 2 ) in a low‐density polyethylene (LDPE)/titanium dioxide (TiO 2 ) composite was measured using a magnetic suspension balance (MSB) at a temperature from 423 to 473 K and pressures up to 15 MPa. The effect of the TiO 2 concentration on the solubility is investigated by varying TiO 2 content in the range of 0–20 wt %. Extending the Sanchez–Lacombe equation of state and its mixing rule for binary mixture, a scheme of calculating CO 2 solubility in composite from MSB data is developed. The solubility of CO 2 in the composites increases in proportion to pressure and exponentially decreases with temperature. The apparent solubility, which is defined by the weight of dissolved CO 2 per unit weight of the composite, decreases as the TiO 2 content increases. However, the true solubility, which can be defined by the weight of dissolved CO 2 per unit weight of polymer, is constant, although the TiO 2 content is changed. © 2002 Wiley Periodicals, Inc. J Appl Polym Sci 86: 282–288, 2002
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