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Lignin‐filled polyolefins
Author(s) -
Kharade A. Y.,
Kale D. D.
Publication year - 1999
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(19990606)72:10<1321::aid-app12>3.0.co;2-9
Subject(s) - high density polyethylene , low density polyethylene , materials science , polyethylene , polypropylene , lignin , ultimate tensile strength , composite material , izod impact strength test , polymer , polymer chemistry , chemistry , organic chemistry
Abstract Dry lignin powder was used as a filler in low‐density polyethylene (LDPE), high‐density polyethylene (HDPE), and polypropylene (PP) up to 30% w/w. The tensile strength reduced for all polymers. Impact properties were almost unaffected for PP but reduced for the other two polymers, Use of five parts of ethylene acrylic acid copolymer (EAA) and 0.5 parts of titanate coupling agent improved mechanical properties considerably. The melt viscosity increased steadily with increasing amounts of lignin. Electrical properties showed improved electrical resistance. The color of the resulting compound could be evaluated only up to a 10% lignin level, beyond which the compounds became very dark. At lower concentrations, samples of HDPE showed a more reddish tinge, while at higher concentrations, all samples showed a green–blue tinge. © 1999 John Wiley & Sons, Inc. J Appl Polym Sci 72: 1321–1326, 1999