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Effect of crosslinked structure on SO 2 gas sorption properties in amino‐functional copolymers
Author(s) -
Matsuguchi Masanobu,
Sakurada Katsuya,
Sakai Yoshiro
Publication year - 2003
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.12135
Subject(s) - sorption , copolymer , styrene , quartz crystal microbalance , desorption , polymer chemistry , materials science , fourier transform infrared spectroscopy , solvent , chemical engineering , polymer , chemistry , adsorption , organic chemistry , composite material , engineering
SO 2 gas sorption properties were examined for poly(styrene‐co‐chloromethyl styrene) functionalized with N , N ‐dimethyl‐1,3‐propanediamine (DMPDA). The DMPDA‐functional copolymers were prepared under various reaction conditions. Two types of SO 2 sorption behaviors were observed for these DMPDA‐functional copolymers: SO 2 sorption capacity was very high irrespective of slow sorption/desorption rates (type I), and the sorption/desorption rates were very fast while SO 2 sorption capacity was small (type II). Fourier transform infrared analysis and dielectric loss measurement revealed that the type II sorption behavior was obtained for the highly crosslinked DMPDA‐functional copolymers. The degree of crosslinking was affected by both the solvent used to react DMPDA with the copolymer and the percent conversion of the chloromethyl styrene group. It was confirmed that DMPDA‐functional copolymers having a highly crosslinked structure are suitable materials in quartz crystal microbalance (QCM)‐type polymeric SO 2 gas sensors. © 2003 Wiley Periodicals, Inc. J Appl Polym Sci 88: 2982–2987, 2003