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Effect of the ceramic filler features on the properties of photopolymerized BaTiO 3 ‐acrylic composites
Author(s) -
Lombardi Mariangela,
Guerriero Andrea,
Kortaberria Galder,
Mondragon Inaki,
Sangermano Marco,
Montanaro Laura
Publication year - 2011
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.21154
Subject(s) - materials science , composite material , barium titanate , dielectric , ceramic , tetragonal crystal system , phase (matter) , composite number , filler (materials) , ferroelectricity , photopolymer , polymer , polymerization , chemistry , optoelectronics , organic chemistry
Barium titanate—acrylic hybrids with ceramic contents ranging between 10 and 70 wt% were successfully prepared by means of photopolymerization. These composites presented a homogeneous distribution of the ceramic particles within the organic matrix. In addition, an almost complete acrylic double‐bond conversion took place. Basic electrical properties of the composites were investigated by dielectric spectroscopy. The increase of the ceramic phase content implied a higher dielectric constant; however, a limited influence of the crystalline phase (cubic or tetragonal) and of the mean size of the filler was demonstrated. In fact, even if cubic particles are not ferroelectric, they are able to behave similarly to the tetragonal ones due to the formation of particle clusters. POLYM. COMPOS., © 2011 Society of Plastics Engineers.