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Chain‐extended polyurethanes—Synthesis and characterization
Author(s) -
Ramesh S.,
Rajalingam P.,
Radhakrishnan Ganga
Publication year - 1991
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/pi.4990250409
Subject(s) - hexamethylene diisocyanate , polyurethane , toluene diisocyanate , polybutadiene , thermosetting polymer , hydroxyl terminated polybutadiene , materials science , polymer chemistry , isophorone diisocyanate , elastomer , swelling , methylene , diamine , telechelic polymer , polymer , organic chemistry , chemistry , composite material , end group , copolymer
Abstract Thermoset polyurethane (PU) elastomers were prepared using hydroxyl‐terminated polybutadiene (HTPB), toluene diisocyanate (TDI) and hexamethylene diisocyanate (HMDI). The effects of various diamines and diols on the mechanical and thermal properties of polyurethanes are discussed. The average molecular weight between crosslinks (M̄/ c ) was determined by swelling studies. The properties imparted by the extenders are explained on the basis of the groups present in the diamines and the number of methylene carbons in the diols.