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Properties of semicrystalline polyolefins. IV. Crystallization phenomena in poly‐3‐methyl‐1‐butene
Author(s) -
Kirshenbaum I.,
Feist W. C.,
Isaacson R. B.
Publication year - 1965
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.1965.070090908
Subject(s) - crystallinity , materials science , crystallization , melting point , glass transition , butene , 1 butene , birefringence , polymer chemistry , melting temperature , phase (matter) , chemical engineering , polymer , composite material , organic chemistry , chemistry , optics , ethylene , catalysis , physics , engineering
A study has been carried out of the physical and mechanical properties and crystallization behavior of poly‐3‐methyl‐1‐butene (poly‐3‐MB). The melt behavior of poly‐3‐MB was examined by means of the depolarized light intensity (DLI) technique. These birefringence studies indicated the onset of motion in the crystalline phase of poly‐3‐MB at about 100°C. (over 200°C. below the melting point). These studies also showed that limited molecular motion may occur at room temperature, i.e., about 25°C. below the glass transition temperature of poly‐3‐MB.