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Preparation and structural characterization of nanocrystalline poly(vinyl chloride)
Author(s) -
Xiong Chuanxi,
Wang Tao,
Liu Qihong,
Dong Lijie,
Chen Juan,
Liu Dan
Publication year - 2003
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.13152
Subject(s) - crystallinity , nanocrystalline material , materials science , vinyl chloride , melting point , particle size distribution , particle size , chemical engineering , particle (ecology) , characterization (materials science) , composite material , polymer chemistry , polymer , nanotechnology , copolymer , oceanography , geology , engineering
This article describes the development of novel nanocrystalline poly(vinyl chloride) (PVC) for potential applications in PVC processes and reports improvements in the mechanical properties and thermal resistance. Before the preparation of nanocrystalline PVC via jet milling, PVC was spray‐treated and heat‐treated to improve its crystallinity. The pulverization and degradation, morphology, crystalline structure, and melting‐point changes of postmodified PVC during jet milling and the relationship between the distributions of the particle size and processing temperature were investigated. X‐ray analysis and density testing indicated increased density and improved crystallinity. The crystalline region of nanocrystalline PVC was less than 80 nm, with a particle size distribution of 5–20 μm and a melting point of less than 128°C. © 2003 Wiley Periodicals, Inc. J Appl Polym Sci 91: 563–569, 2004