Premium
Interfacial polycondensation. I. The formation of surface graft polymers on wool
Author(s) -
Whitfield R. E.,
Miller L. A.,
Wasley W. L.
Publication year - 1964
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.1964.070080410
Subject(s) - polymer chemistry , condensation polymer , polymer , grafting , copolymer , polymerization , polyamide , materials science , substrate (aquarium) , polyester , wool , coating , chemistry , organic chemistry , composite material , oceanography , geology
By means of interfacial polycondensation, ultrathin coatings of polyamides, polyurethanes, polyureas, polyesters, polycarbonates, and various copolymers can be formed on the surface of a substrate. If the substrate contains reactive groups (such as NH 2 , OH, NCO, COCl, etc.), graft polymer is formed. The graft polymer is not removed by extensive extraction with good solvents for the polymer. In contrast, if wool is used as a substrate and is acetylated prior to the polymerization (to block the grafting sites), the thin coating of polymer is readily extracted. Digestion of the treated wool with enzymes that react with the wool, but not with the grafted coating, permits a characterization of the grafted polymer; amino acid analysis of the residue from the enzyme digestion provides evidence that the grafting sites on the wool are probably the free amino and hydroxyl groups located in the N ‐terminal amino acids or internal amino acids containing these groups in their side chain.