Gas transport in polyurethane-polystyrene interpenetrating polymer network membranes

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The gas(oxygen and nitrogen) transport characteristics of the IPN membranes of polyurethane/polystyrene were studied. The effect of synthesis temperature, composition, and crosslink density of the IPN membranes were analyzed. Polyurethane was prepared thermally and polystyrene was prepared by photolytic polymerization methods at various temperatures. The degree of intermixing between component polymers in the IPN membrane increased with decreasing synthesis temperature from 50℃ to -10℃. The PS phase Tg was shifted inwardly up to 12℃. The permeability coefficient decreased and ideal separation factor increased also with decreasing the synthesis temperature due to the increase of miscibility. The permeability coefficient of oxygen and nitrogen ranged in the 10-9 and 10-10 order of magnitude. The permeability coefficient showed the maximum value at about 40 wt% polyurethane composition. The permeability data agreed well with the simple free volume model proposed by LEE.
Publisher
Wiley-Blackwell
Issue Date
1990-01
Language
English
Citation

POLYMERS FOR ADVANCED TECHNOLOGIES, v.1, no.3-4, pp.231 - 238

ISSN
1042-7147
URI
http://hdl.handle.net/10203/2287
Appears in Collection
CBE-Journal Papers(저널논문)
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