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Heterogeneous nucleation and crystallization of polyethylene with gold: Dilatometry
Author(s) -
Hara Katsuyuki,
Schonhorn Harold
Publication year - 1972
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.1972.070160505
Subject(s) - nucleation , crystallization , materials science , lamellar structure , polyethylene , isothermal process , crystal growth , crystal (programming language) , crystallization of polymers , thermodynamics , chemical engineering , crystallography , composite material , chemistry , physics , computer science , programming language , engineering
Abstract Heterogeneous nucleation and crystallization data for polyethylene at a gold interface are reported. Isothermal crystallization is investigated by dilatometry. Avrami plots of the crystallization data suggest that the gold surface acts as a suitable nucleating agent resulting in heterogeneous nucleation and two‐dimensional crystal growth at the polyethylene melt–gold interface. The deviation of measurements from Avrami's equation suggests the presence of intercrystalline links during the final growth stages of isothermal crystallization. A closely packed lamellar model is given for heterogeneous nucleation and two‐dimensional crystallization which results in high density and rod‐like crystals.