Gravimetric study of high‐pressure sorption of gases in polymers

Journal of Polymer Science, Part B: Polymer Physics - Tập 24 Số 7 - Trang 1525-1539 - 1986
Yoshinori Kamiya1, Takuji Hirose1, Keishin Mizoguchi1, Yasutoshi Naito1
1Packaging Materials Division, Industrial Products Research Institute, 1‐1‐4, Yatabe‐Machi Higashi, Tsukuba‐Gun, Ibaraki 305, Japan

Tóm tắt

AbstractA gravimetric method for determining precisely the solubility of gases in polymers at high pressure is described. The solubilities of N2 and CO2 in low‐density polyethylene (LDPE); CO2 in polycarbonate (PC); and N2, CH4, C2H6, and CO2 in polysulfone (PSUL) have been measured as a function of pressure up to 50 atm. Most of the measured sorption isotherms agreed closely with published data, but reproducible and time‐dependent hysteresis in the sorption of CO2, C2H6, and CH4 in glassy polymers, PC, and PSUL, was observed in this study for the first time. Like the well known conditioning effect of high‐pressure CO2 on the sorption capacity of glassy polymers, these hysteresis phenomena are believed to be due to the plasticizing effect of sorbed gases. On the basis of the current data, the dual‐mode sorption model including the plasticization by sorbed gas is discussed and a primitive equation for the concentration of sorbed gases in a quasiequilibrium state of sorption or desorption is proposed.

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Tài liệu tham khảo

10.1002/pol.1958.1202711515

10.1063/1.1729066

10.1002/pol.1978.180161105

10.1002/pen.760231004

10.1002/pol.1980.180180515

10.1021/bk-1983-0223.ch005

10.1016/0021-9797(66)90016-6

10.1002/pol.1976.180140410

10.1002/pol.1978.180160415

Kamiya Y., J. Polym. Sci. Polym. Phys. Ed.

Hirose T., J. Polym. Sci. Polym. Phys. Ed.

Dean J. A., 1979, Lange's Handbook of Chemistry

10.1002/pol.1961.1205015411

10.1002/app.1972.070160414

10.1016/S0376-7388(00)80438-X

10.1002/app.1979.070240615

10.1016/S0376-7388(00)82135-3

M. D.Sefcik private communication.

10.1080/00401706.1961.10489945

10.1016/0376-7388(82)80003-3

10.1002/pol.1981.180191015

10.1007/3-540-13483-2_3

10.1002/pen.760200116

10.1021/ma60074a029

10.1016/S0376-7388(00)85028-0

10.1002/app.1981.070260114

10.1002/pol.1976.180140409

10.1002/pol.1981.180191014

10.1002/pen.760200115

10.1002/pen.760211409

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Thông tin xuất bản

Journal of Polymer Science, Part B: Polymer Physics

Tập 24 Số 7

1525-1539

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