Research and Application of Materials Science

Isothermal and Non-Isothermal Crystallization Kinetics of PVDF and PVDF/PMMA Blends

SONGJianbin, CAIYuan, ZHANGBin, TANGLixin, SHIRongrong, SUNHaiyan, WANGLiang, YANYonghuan


Background: poly(vinylidene fluoride) PVDF and PVDF/PMMA blends have been investigated with a focus on the crystal structure, immiscibility and mechanical properties. However, few reports were found on the crystallization behaviors of PVDF and PVDF/PMMA blends, especially on crystallization kinetics. The article is to report the research on isothermal and nonisothermal crystallization kinetics for PVDF and PVDF/PMMA blends using differential scanning calorimetry (DSC). Results: Besides crystallization temperature and isothermal crystallization activation energy, the Avrami equation exponent of PVDF in blends decreased compared with pure PVDF. The nonisothermal crystallization kinetics of PVDF and PVDF/PMMA (70:30) blends were investigated by Ozawa equation, Jeziorny method and crystallization rate constant (CRC) in detail. The nonisothermal crystallization energy of pure PVDF and its blends were determined by the Kissinger and Vyazovkin’s method. Conclusion: The nucleation and growth mechanism of PVDF in blends changed compared with pure PVDF. The Ozawa equation is not applicable in nonisothermal crystallization kinetics of PVDF and PVDF/PMMA blends. The decreasing of crystallization ability of PVDF in blends were found and confirmed by CRC and the decline of crystallization rate constant in Jeziorny method. Such is opposite to the results of Kissinger’s and Vyazovkin’s method, chances are that these two methods were not used to calculate the nonisothermal crystallization activation energy where the nucleation process was influenced.


PVDF; PMMA; crystallization; isothermal

Full Text:



Esterly DM and Love BJ. J Polym Sci Part B: Polym Phys 42:91 (2004).

Zhang GZ, Kitamura T, Yoshida H and Kawai T, J Therm Anal Calorim 69:939 (2002).

Gregorio JR and Cestari M, J Polym Sci Part B: Polym Phys 32:859 (1994).

Moussaif M, Pagnoulle C, Riga J and Jerome R, Polymer 41:3391 (2000).

Li G., Zhu B, Zhang C and Xu Y, J Appl Polym Sci 107:2109 (2008).

Holmberg S, Nasman J and Undholm F, Polym Advan Technol 9:121 (1996).

Nishi T and Wang TT, Macromolecules 8:909 (1975).

Kader MA, Kwak SK, Kang SL, Ahn JH and Nah C, Polym Int 57:1199 (2008).

Pramoda K, Mohamed A, Phang IY and Liu TX, Polym Int 54:226 (2005).

Benedetti E, Catanorchi S, Alessio AD and Vergamini P, Polym Int 45:373 (1998).

Lin S, Argasinski K, In:Hougham G, Cassidy Pe, Johns K, Davidson T, (Eds). Fluoropolymer Alloys Performance Optimization of Pvdf Alloys, Plenum Press, New York, P121 (1999).

Avrami MJ, Chem Phys 7:1103 (1939).

Avrami MJ, Chem Phy 8:212 (1939).

Chiu HJ, J Polym Res 9:169 (2002).

Yin JH and Mo ZS, Modern Polymer Physics, Science Press, Beijing, 2001

Ozawa T, Polymer 12:150 (1971).

Fava RA, Methods of Experimental Physics Academic New York, 1980, 16.

Zhang QX, Zhang ZH, Zhang HF and Mo ZS, J Polym. Sci Part B: Polym Phys 40:1790 (2002).

Jeziomy A, Polymer 19:1142 (1978).

Kissinger HE, J Res Natl Bur Stand 57:217 (1956).

Vyazovkin S, Macromol Rapid Comm 23:771 (2002).

Friedman H, J Polym Sci Part C 6:183 (1964).

Liu MY, Zhao QX, Wang YD, Zhang CG, Mo ZS and Cao SK, Polymer 44:2537 (2003).



  • There are currently no refbacks.

Copyright (c) 2021 Jianbin SONG, Yuan CAI, Bin ZHANG, Lixin TANG, Rongrong SHI, Haiyan SUN, Liang WANG, Yonghuan YAN

Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.