Effect of TiO₂ contents on the crystallization kinetics of PVDF in PVDF-diluent-TiO₂ blends

Yuxin MaCollege of Architecture and Civil Engineering, Heilongjiang University, Harbin150080, China, Tel./Fax: +86 451 86604021 (Y. Ma)Correspondence[email protected]

Fengmei ShiState Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin150090, China, Tel./Fax: +86 451 86283010 (F. Shi), Tel./Fax: +86 451 86283010 (J. Ma)Correspondence[email protected]

Jun MaState Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin150090, China, Tel./Fax: +86 451 86283010 (F. Shi), Tel./Fax: +86 451 86283010 (J. Ma)Correspondence[email protected]

Abstract

Effect of TiO₂ contents on the non-isothermal crystallization kinetics of poly(vinylidence fluoride) (PVDF) in PVDF-diluent–TiO₂ blends was studied via differential scanning calorimetry method. Non-isothermal crystallization of PVDF was investigated by Jeziorny analysis and crystallizability analysis. Studies showed that the crystallization peak temperature of the blends increased from 363 to 375.6 K and the Avrami exponent decreased from 4 to 2.68, with the increase in TiO₂ content from 0 to 3.0 wt%. Higher TiO₂ content could hinder the growth of PVDF crystals in the blends. The blends with the TiO₂ content of 0.45% had the largest crystallization rate (Z_c= 0.97) and the maximum crystallizability (G_R= 1.05). Hopefully, the introduction of TiO₂ to the membrane mixture would be applied to control and adjust the structure of the membrane prepared.

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Acknowledgements

This work was supported by the Scentific Research Funds of Heilongjiang Provincial Education Department [Grant number 12531503].

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Effect of TiO₂ contents on the crystallization kinetics of PVDF in PVDF-diluent-TiO₂ blends

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Effect of TiO₂ contents on the crystallization kinetics of PVDF in PVDF-diluent-TiO₂ blends