Nonisothermal and isothermal cold crystallization behaviors of biodegradable poly(p -dioxanone)

Jian Bing Zeng, Madhusudhan Srinivansan, Shao Long Li, Ramani Narayan, Yu Zhong Wang

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    Abstract

    Nonisothermal and isothermal cold crystallization behaviors of poly(p-dioxanone) (PPDO) were investigated by differential scanning calorimetry (DSC). There were two crystallization exotherms - a major exotherm between 25 °C and 50 °C and a minor one almost unchanged at 77 °C with various heating rates - in the heating scans of PPDO during nonisothermal cold crystallization. Temperature-modulated differential scanning calorimetry (TMDSC) revealed the major crystallization exotherm in the low-temperature range to be the real cold crystallization peak, and the minor one in the high-temperature range to be the melt-recrystallization peak of crystals with lower thermal stability. Several methods, including the Avrami, Tobin, and Ozawa equations, were employed to analyze the nonisothermal cold crystallization kinetics of PPDO. The efficiencies of the Avrami and Tobin methods were compared, and the results suggest that the Avrami equation is more suitable for describing nonisothermal cold crystallization kinetics of PPDO. The activation energy for nonisothermal cold crystallization of PPDO was calculated to be 35.27 kJ/mol, using the Kissinger method. In addition, the Avrami equation was also used to describe the isothermal cold crystallization kinetics of PPDO.

    Original languageEnglish (US)
    Pages (from-to)4471-4477
    Number of pages7
    JournalIndustrial and Engineering Chemistry Research
    Volume50
    Issue number8
    DOIs
    StatePublished - Apr 20 2011

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    Crystallization
    Crystallization kinetics
    Temperature
    Acetanilides
    Erythroplasia
    Differential scanning calorimetry
    Differential Scanning Calorimetry
    Heating
    Heating rate
    Thermodynamic stability
    Activation energy
    Crystals
    African Swine Fever
    Fusobacterium
    Clodronic Acid
    Keloid
    Carcinoid Tumor
    Hot Temperature

    ASJC Scopus subject areas

    • Chemical Engineering(all)
    • Chemistry(all)
    • Industrial and Manufacturing Engineering

    Cite this

    Nonisothermal and isothermal cold crystallization behaviors of biodegradable poly(p -dioxanone). / Zeng, Jian Bing; Srinivansan, Madhusudhan; Li, Shao Long; Narayan, Ramani; Wang, Yu Zhong.

    In: Industrial and Engineering Chemistry Research, Vol. 50, No. 8, 20.04.2011, p. 4471-4477.

    Research output: Contribution to journalArticle

    Zeng, Jian Bing; Srinivansan, Madhusudhan; Li, Shao Long; Narayan, Ramani; Wang, Yu Zhong / Nonisothermal and isothermal cold crystallization behaviors of biodegradable poly(p -dioxanone).

    In: Industrial and Engineering Chemistry Research, Vol. 50, No. 8, 20.04.2011, p. 4471-4477.

    Research output: Contribution to journalArticle

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    abstract = "Nonisothermal and isothermal cold crystallization behaviors of poly(p-dioxanone) (PPDO) were investigated by differential scanning calorimetry (DSC). There were two crystallization exotherms - a major exotherm between 25 °C and 50 °C and a minor one almost unchanged at 77 °C with various heating rates - in the heating scans of PPDO during nonisothermal cold crystallization. Temperature-modulated differential scanning calorimetry (TMDSC) revealed the major crystallization exotherm in the low-temperature range to be the real cold crystallization peak, and the minor one in the high-temperature range to be the melt-recrystallization peak of crystals with lower thermal stability. Several methods, including the Avrami, Tobin, and Ozawa equations, were employed to analyze the nonisothermal cold crystallization kinetics of PPDO. The efficiencies of the Avrami and Tobin methods were compared, and the results suggest that the Avrami equation is more suitable for describing nonisothermal cold crystallization kinetics of PPDO. The activation energy for nonisothermal cold crystallization of PPDO was calculated to be 35.27 kJ/mol, using the Kissinger method. In addition, the Avrami equation was also used to describe the isothermal cold crystallization kinetics of PPDO.",
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    AU - Srinivansan,Madhusudhan

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    AU - Narayan,Ramani

    AU - Wang,Yu Zhong

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