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Sulfonic acid group‐containing thin films prepared by plasma polymerization
Author(s) -
Inagaki N.,
Tasaka S.,
Miyazaki H.
Publication year - 1989
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.1989.070381005
Subject(s) - sulfonic acid , polymerization , chemistry , sulfite , polymer chemistry , sulfur , polymer , oxygen , sulfur dioxide , hydrocarbon , organic chemistry
Plasam polymerization of hydrocarbon/sulfure dioxide mixtures, C 2 H/SO 2 , C 2 H 4 /SO 2 , and CH 4 /SO 2 mixtures, was investigated to obtain thin films containing sulfonic acid groups. Plasma polymerization of C 2 H 2 /SO 2 and C 2 H 2 /SO 2 mixtures gave filmlike products but that of the CH 4 /SO 2 mixtures did not. The plasma polymers possessed much amount of sulfur and oxygen moieties with hydrocarbon chains. The sulfur moieties involved thio, sulfite, and sulfonic acid groups. This groups was a main product and reached 70–80 mol % of the total sulfur moieties. The remains (20–30 mol %) were sulfonic acid and sulfite groups. The oxygen moieties were hydroxyl and carbonyl groups with small amount of carbonxyl groups. The plasma polymers showed and hydrophilicity (the surface energy was 54–56mN/m) and good antithrombogenity.