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Properties of alpha‐methylstyrene–methacrylonitrile copolymer
Author(s) -
Kenney J. F.,
Patel P. J.
Publication year - 1976
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.1976.070200217
Subject(s) - methacrylonitrile , izod impact strength test , copolymer , materials science , ultimate tensile strength , flexural strength , composite material , polymer chemistry , polymer , acrylonitrile
Abstract Physical and mechanical properties of alpha‐methylstyrene–methacrylonitrile copolymer have been determined. The effects of copolymer composition and inherent viscosity (molecular weight) on deflection temperature under load, Izod impact strength, tensile, and flexural properties are reported. The azeotropic copolymer of 57 mole‐% methacrylonitrile possessed the best overall properties with a DTUL of 129°C and an Izod impact strength of 0.3 ft‐lb/in. notch. The impact strength of the copolymer was improved by graft copolymerization upon a butadiene–methacrylonitrile copolymer. The impact‐modified copolymer possessed an Izod impact strength of 6 ft‐lb/in. notch and a DTUL of 115°C.