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The effect of preparation methods on the thermal properties of poly(acrylic acid) / alumina composites
Author(s) -
Çaykara Tuncer,
Güven Olgun
Publication year - 1998
Publication title -
polymer composites
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.577
H-Index - 82
eISSN - 1548-0569
pISSN - 0272-8397
DOI - 10.1002/pc.10090
Subject(s) - materials science , thermogravimetry , activation energy , polymerization , composite material , acrylic acid , degradation (telecommunications) , acrylic resin , glass transition , thermal , thermal stability , kinetics , chemical engineering , copolymer , polymer , organic chemistry , chemistry , coating , telecommunications , physics , quantum mechanics , meteorology , computer science , engineering
Poly(acrylic acid) ‐ alumina composites have been prepared by two different methods and thermally characterized. The glass transition temperatures ( T g ) of the PAA/Al 2 O 3 systems prepared by mixture and polymerization method were found to be 126°C and 130°C, respectively, irrespective of the alumina amounts involved in this work. The composites prepared by mixture and polymerization method have been investigated by using thermogravimetry (TGA) to follow the kinetics of anhyride formation and thermal degradation reactions. The activation energy of thermal anhydride formation and thermal degradation reaction was not found to change very much with the ratio of PAA/Al 2 O 3 when the composites were prepared by simple mixing. For the composites prepared by the polymerization method, the activation energy of anhyride formation and thermal degradation reaction were observed to change with percentage conversion.