The Thermo-Mechanical and Dielectric Properties of Superhydrophobic Pbz/TiO 2 Composites

Shakila Parveen Asrafali, Thirukumaran Periyasamy, Chaitany Jayprakash Raorane, Vinit Raj and Seong Cheol Kim ()
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Shakila Parveen Asrafali: School of Chemical Engineering, Yeungnam University, Gyeongsan 38541, Korea
Thirukumaran Periyasamy: School of Chemical Engineering, Yeungnam University, Gyeongsan 38541, Korea
Chaitany Jayprakash Raorane: School of Chemical Engineering, Yeungnam University, Gyeongsan 38541, Korea
Vinit Raj: School of Chemical Engineering, Yeungnam University, Gyeongsan 38541, Korea
Seong Cheol Kim: School of Chemical Engineering, Yeungnam University, Gyeongsan 38541, Korea

Sustainability, 2022, vol. 14, issue 20, 1-12

Abstract: Polymer composites display the synergistic property of the polymer (matrix) and inorganic particles (filler material), when their combination is properly utilized. In the present work, polymer composites possessing a superhydrophobic property are fabricated by imposing the combination of both surface free energy and surface roughness. Polybenzoxazine (Pbz) is a choice of low surface free energy material and TiO 2 particles contribute to create surface roughness. Thus, Pbz/TiO 2 composites were fabricated by varying TiO 2 contents to produce superhydrophobicity. The hydrophobicity increased from 94° for Pbz to 140° for Pbz/T5. The advantage of molecular design flexibility is also utilized to synthesize benzoxazine monomer (Bzo), which then undergoes thermally induced self-polymerization with different contents of TiO 2 to produce Pbz-TiO 2 composites. The structure analysis and curing behavior of the Bzo monomer was examined using FT-IR, NMR and DSC techniques. Whereas the properties of the Pbz/TiO 2 composites were analyzed by WCA, SEM, DMA, TGA, and dielectric techniques.

Keywords: polybenzoxazine; TiO 2; polymer composites; superhydrophobicity (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2022
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