Crystallization Behavior of Polypropylene/Graphene Nanoplatelets Nanocomposite Fiber I. Isothermal Crystallization Kinetics

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Semnani Rahbar R.; KALANTARI B.; Mohaddes Mojtahedi M.R.

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Journal: ADVANCED MATERIALS AND NOVEL COATINGS Year:2019 | Volume:7 | Issue:28 Page(s): 2022-2035

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Title

Crystallization Behavior of Polypropylene/Graphene Nanoplatelets Nanocomposite Fiber I. Isothermal Crystallization Kinetics

Author(s)

Semnani Rahbar R. | KALANTARI B. | Mohaddes Mojtahedi M.R. | Issue Writer Certificate

Keywords

Graphene nanoplatelets

Nanocomposite

Crystallization kinetics

Isothermal crystallization

Abstract

Crystallization behavior of polypropylene/Graphene nanoplatelets (PP/GnPs) Nanocomposite fiber was studied by means of differential scanning calorimetry. PP/GnPs Nanocomposite fibers containing different amounts of GnPs were prepared with and without a compatibilizer, maleic anhydride-grafted polypropylene (PP-g-MA), and then isothermal Crystallization kinetics was investigated at different crystallization temperatures by Avrami and Lauritzen-Hoffman equations. The results show that heterogeneous nucleation occurs easily in the presence of GnPs even at higher temperatures and thereby the crystallization rate of PP in the PP/GnPs fiber increased. Moreover, upon inclusion of PP-g-MA, relative crystallinity-time curves shifted to the shorter times. The Avrami equation revealed that although GnPs and PP-g-MA have nucleation effect, the crystal growth of PP is restricted in the PP/PP-g-MA/GnPs Nanocomposite fiber, increasing the crystallization half-time. Furthermore, Avrami exponent of approximately 3 for neat PP and 2 for PP/GnPs is consistent with three-dimensional crystal growth process and two-dimensional crystal growth, respectively. According to Lauritzen-Hoffman equation, the nucleation parameter decreased with the addition of GnPs, suggesting that the GnPs act as a nucleating agent and also reduced the interfacial free energy.

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APA: Copy

Semnani Rahbar, R., KALANTARI, B., & Mohaddes Mojtahedi, M.R.. (2019). Crystallization Behavior of Polypropylene/Graphene Nanoplatelets Nanocomposite Fiber I. Isothermal Crystallization Kinetics. ADVANCED MATERIALS AND NOVEL COATINGS, 7(28 ), 2022-2035. SID. https://sid.ir/paper/270209/en

Vancouver: Copy

Semnani Rahbar R., KALANTARI B., Mohaddes Mojtahedi M.R.. Crystallization Behavior of Polypropylene/Graphene Nanoplatelets Nanocomposite Fiber I. Isothermal Crystallization Kinetics. ADVANCED MATERIALS AND NOVEL COATINGS[Internet]. 2019;7(28 ):2022-2035. Available from: https://sid.ir/paper/270209/en

IEEE: Copy

R. Semnani Rahbar, B. KALANTARI, and M.R. Mohaddes Mojtahedi, “Crystallization Behavior of Polypropylene/Graphene Nanoplatelets Nanocomposite Fiber I. Isothermal Crystallization Kinetics,” ADVANCED MATERIALS AND NOVEL COATINGS, vol. 7, no. 28 , pp. 2022–2035, 2019, [Online]. Available: https://sid.ir/paper/270209/en

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