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Egg White as an Environmentally Friendly Low‐Cost Binder for Gelcasting of Ceramics
Author(s) -
Dhara Santanu,
Bhargava Parag
Publication year - 2001
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.2001.tb01137.x
Subject(s) - slurry , ovalbumin , egg white , materials science , ceramic , viscosity , alumina ceramic , composite material , chemistry , immune system , organic chemistry , immunology , biology
Slurries with different solids loading (34–50 vol%) of alumina were made with egg white (ovalbumin)–water premix. The ovalbumin content in the premix was decreased with increase in solids loading to lower slurry viscosity. The slurries were cast into bulk shapes and heated to 80°C, resulting in denaturation of ovalbumin forming a gel. The gelled samples were dried under controlled humidity and sintered in air to densities 94%–97% of theoretical. Alumina slurries formed with egg white (no water) were used to form tapes as thin as 60 μm in the sintered state.