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Study of mechanical properties of urethane‐chlorinated rubber graft copolymer system. I
Author(s) -
Anbazhagan K.,
Reddy C. Rami,
Joseph K. Thomas
Publication year - 1985
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.1985.070300134
Subject(s) - triethanolamine , prepolymer , ultimate tensile strength , materials science , toluene diisocyanate , isocyanate , scanning electron microscope , copolymer , natural rubber , polypropylene glycol , polypropylene , composite material , elongation , polymer chemistry , polyurethane , chemistry , polymer , polyethylene glycol , organic chemistry , analytical chemistry (journal)
The isocyanate‐terminated urethane prepolymer was prepared from toluene diisocyanate and a mixture of castor oil‐polypropylene glycol (PPG) (MW 2000). The chlorinated rubber (CR) graft copolymers (A and B) containing small percentage of hydroxyl groups were mixed with the urethane prepolymer in different proportions (1:1, 2:3, and 1:2), and the films were cast using these systems. Tensile strength and percent elongation were evaluated for A and B series with and without triethanolamine (TEA). Morphological characteristics of the films were also studied by using a scanning electron microscope (SEM). Deviations noticed in tensile strength values at yield as well as at break for A and B series and for the samples cured with additional TEA have been discussed.