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Evaluation of Alfa grass soda lignin as a filler for novolak molding powder
Author(s) -
Hattali Samir,
Benaboura Ahmed,
Dumarçay Stéphane,
Gérardin Philippe
Publication year - 2005
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.21243
Subject(s) - lignin , materials science , molding (decorative) , composite material , thermal stability , limiting oxygen index , filler (materials) , chemistry , organic chemistry , pyrolysis , char
Behavior of Alpha grass soda lignin was investigated for the preparation of novolak molding powders. Thermal analysis of the different investigated formulations indicated that molding powders prepared from Alpha grass soda lignin were more resistant to thermal degradation compared to a standard formulation prepared from wood flour. Limiting oxygen index determined for the different composites confirmed the higher thermal stability of Alpha grass soda lignin composites. Mechanical properties tested either from Shore hardness tests or from impact strength measurements revealed a slight decrease of mechanical properties for composites prepared from Alpha grass soda lignin. All these results showed the possibility to replace imported wood flours by locally available Alpha grass soda lignin to obtain phenolic composites with quite similar properties. © 2005 Wiley Periodicals, Inc. J Appl Polym Sci 97: 1065–1068, 2005