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Effects of orientation and chemical structure on the strength properties of some polymers
Author(s) -
Takano Masaharu,
Nielsen Lawrence E.
Publication year - 1977
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.760170404
Subject(s) - materials science , copolymer , polymer , acrylonitrile , styrene , vinyl alcohol , composite material , brittleness , polarity (international relations) , hydrogen bond , perpendicular , polymer chemistry , molecule , organic chemistry , chemistry , biochemistry , geometry , mathematics , cell
The stress‐strain properties of oriented polymers are measured parallel and perpendicular to the direction of hot stretching. The polymers include styrene‐acrylonitrile copolymers, vinyl alcohol copolymers, acrylic acid copolymers, polyelecf trolytes, and a high density polyethylene. Polarity and hydrogen bonding tend to increase the strength, especially in the direction perpendicular to the direction of hot stretching. Strong electrostatic bonding in polyelectrolytes and too much polar bonding in styrene‐acrylonitrile & polymers decrease the strength by reducing the molecular mobility, which is required to prevent brittleness.