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Desalination and Water Treatment Volume 56, 2015 - Issue 3
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Articles

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]
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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]
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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]
Pages 752-759 | Received 28 Nov 2013, Accepted 22 Jun 2014, Published online: 15 Jul 2014
 
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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 (Zc = 0.97) and the maximum crystallizability (GR = 1.05). Hopefully, the introduction of TiO2 to the membrane mixture would be applied to control and adjust the structure of the membrane prepared.

Acknowledgements

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

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