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Poly(vinyl chloride) composition. I. Mechanical properties and structure of poly(vinyl chloride) and fire‐retardant additives
Author(s) -
Stoeva S.,
Benev D.,
Karaivanova M.
Publication year - 1993
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.1993.070471016
Subject(s) - vinyl chloride , fire retardant , materials science , polymer chemistry , chemical engineering , zinc , ammonium chloride , polymer , phase (matter) , vinyl polymer , crystal structure , composite material , chemistry , copolymer , organic chemistry , engineering , metallurgy
Natural, activated, and modified microzeolites were studied individually and in combination with ammonium sulfamate as high‐melting dispersed additives. The strength—deformation properties of poly(vinyl chloride) were improved within the interval of 3–8 wt % additive. The strengthening effect due to the considered dispersed additives can be ascribed to the optimal adhesive interaction of the phase‐boundary surface and to the formation of a partially ordered dispersed phase. The tetrahedral configuration of the modified microzeolite that contains 3.5–4% zinc in its crystal lattice remains unchanged, but exhibits a reduced birefringence. These relationships are of exceptional importance for the use of poly(vinyl chloride). The introduction of certain amounts of the additives improves the melt flow of the polymer and facilitates the processibility of the compositions. © 1993 John Wiley & Sons, Inc.