Premium
Studies on polyurea membrane
Author(s) -
Joshi S. V.,
Rao A. V.
Publication year - 1983
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.1983.070280419
Subject(s) - polyurea , interfacial polymerization , diamine , hexamethylene diisocyanate , ultrafiltration (renal) , membrane , polymer chemistry , polymer , materials science , chemical engineering , polymerization , chemistry , monomer , polyurethane , chromatography , composite material , biochemistry , engineering
Synthesis of polyurea by interface polymerization of diisocyanate and diamine for preparation of polymer membrane for use in separation problems was investigated. A sulfuric‐acid‐based casting formulation was developed for the polymer prepared from 1,6‐hexamethylene diamine and 1,6‐hexamethylene diisocyanate. The resulting membrane is porous and highly permeable to water. However, salt rejection was found to be <20%, while high molecular weight solutes like milk, papain, and Na‐alginate were found to be rejected 100%. The membrane is more like a sieve structure with the absence of an asymmetric layer. It is found to be resistant to many organic solvents, thus making it suitable for use in ultrafiltration applications.