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Surface modification of calcium carbonate used for polypropylene blending with dimeric aluminates
Author(s) -
Liao Kairong,
Chen Xuexin,
Zheng Chenmou
Publication year - 1995
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.1995.070571010
Subject(s) - calcium carbonate , polypropylene , elongation , materials science , chemical engineering , polymer chemistry , calcium , surface modification , carbonate , chemistry , composite material , metallurgy , engineering , ultimate tensile strength
There kinds of dimeric aluminates (2DH‐306, 2DH‐324, and 2DH‐335) have been used for surface modification of calcium carbonate (CaCO 3 ) particles. The dimeric aluminates were shown to have an appreciable coupling effect at the interfaces between the light calcium carbonate (L‐CaCO 3 ) and polypropylene (PP) in the blends by mechanical property study and SEM observation. In the 2DH‐306 modified L‐CaCO 3 /PP (25/75) system, the impact strength exceeded that of the nonmodified system by more than 30 kJ/m 2 . X‐ray study showed that the dimeric aluminates had a synergistic effect with L‐CaCO 3 on the formation of PP β‐crystal, which would exert an important influence on the elongation ratio at break for the L‐CaCO 3 /PP blends. © 1995 John Wiley & Sons, Inc.