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Structure and properties of talc‐filled polypropylene: Effect of phosphate coating
Author(s) -
Liu Z.,
Gilbert M.
Publication year - 1996
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/(sici)1097-4628(19960214)59:7<1087::aid-app5>3.0.co;2-a
Subject(s) - talc , coating , materials science , polypropylene , composite material , ultimate tensile strength , crystallinity , phosphate , flexural modulus , dispersion (optics) , flexural strength , chemistry , physics , organic chemistry , optics
Talc surface treatment was carried out using a series of phosphate coating levels. The coated talc was characterized using quantitative diffuse reflectance FTIR analysis, which revealed a saturation of surface coverage at around 6 wt % phosphate. Coated and uncoated talc had a nucleation effect; and the degree of crystallinity of composites increased initially, then gradually decreased with increasing phosphate coating level. The talc dispersion was improved as coating level increased; however, the platelet alignment was reduced. The addition of 0.5 wt % phosphate to talc resulted in a maximum increase in tensile strength and a significant drop in flexural modulus. Improvement of falling weight impact properties of the composites were achieved at high coating levels. © 1996 John Wiley & Sons, Inc.