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Thermal degradation and crystallization kinetics studies on synthesized calcium mercaptosuccinate end-capped poly(ε-caprolactone) nanocomposite

  • S. Mahalakshmi
  • T. Alagesan
  • V. Parthasarathy
  • R. Anbarasan
Original Paper
  • 2 Downloads

Abstract

The calcium mercaptosuccinate (Ca-MS) functionalized poly(ε-caprolactone) (PCL) was successfully synthesized by ring-opening polymerization (ROP) method at 160 °C for 2 h under nitrogen atmosphere with mild stirring in the presence of stannous octoate (SO) as ROP catalyst. The synthesized Ca-MS functionalized PCL was characterized by FTIR spectroscopy, NMR spectroscopy, atomic force microscopy, HRTEM and polarized optical microscopy (POM) like analytical techniques. The microstructure of Ca-MS nucleated PCL crystals was analysed by POM. The thermal properties of Ca-MS functionalized PCL were examined using differential scanning calorimetry and thermogravimetric analysis techniques. The non-isothermal crystallization and degradation kinetic studies were carried out to assess the crystallinity as well as the energy of activation (Ea) of Ca-MS functionalized PCL. The FTIR spectrum showed a peak at 1720 cm−1 corresponding to the carbonyl stretching of PCL. The 1H-NMR spectrum showed an alkoxy proton signal at 4.1 ppm. The non-isothermal crystallization kinetic study showed the 3D crystal growth with the Ea value of 142.4 kJ/mol.

Keywords

Activation energy Degradation Spherulite Crystallization Kinetics 

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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  • S. Mahalakshmi
    • 1
  • T. Alagesan
    • 2
  • V. Parthasarathy
    • 3
  • R. Anbarasan
    • 4
  1. 1.Department of PhysicsAnand Institute of Higher TechnologyKazhipattur, ChennaiIndia
  2. 2.Department of PhysicsPresidency CollegeChennaiIndia
  3. 3.Department of PhysicsHindustan Institute of Technology and SciencePadur, ChennaiIndia
  4. 4.Department of Chemical EngineeringNational Taiwan UniversityTaipeiTaiwan

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