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The determination of the pore structural parameters of isoporous resins by inverse GPC
Author(s) -
Wang Anyou,
Yan Juntan,
Xu Rongnan
Publication year - 1992
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.1992.070440604
Subject(s) - microporous material , materials science , adsorption , inverse , alkylbenzenes , volume (thermodynamics) , inverse gas chromatography , swelling , distribution function , chemical engineering , thermodynamics , composite material , chemistry , benzene , polymer , organic chemistry , geometry , mathematics , physics , engineering
The swollen pore structure of a series of microporous isoporous resins (7.4–140 Å) are investigated with inverse GPC, n ‐alkylbenzenes and linear polystyrenes being used as probe molecules. The results indicated that, with the lowering of crosslinking degree of isoporous resins, the average pore diameter increased and the pore distribution curve broadened. All pore volume distribution obeyed a log‐normal distribution. Based on the linear regression method, the experimental data were fitted to a monotonously declining exponential function and a normal distribution function by a computer, and some important structural parameters such as average pore diameter, pore volume distribution, specific surface area, etc. were obtained. The specific surface area of swollen gels were found much greater than those in the dry state measured by N 2 adsorption.