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Synthesis and characterization of metal-mercaptoacetate hybrids and its application towards ring-opening polymerization of ε-caprolactone: a comparative study

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Abstract

The Mn2+ and Mo6+ based metal-mercaptoacetate (metal-MA) hybrids were prepared by a simple acid–base titration method. The prepared metal-MA hybrids were analysed by FT-IR spectroscopy, UV–visible spectroscopy, SEM, particle size analyser (PSA), XRD and EDX. The prepared metal-MA hybrids were investigated to assess their catalytic activity for ring-opening polymerization (ROP) of ε-caprolactone (CL) in the absence of an initiator at 160 °C in N2 atmosphere by varying the catalyst concentration and temperature. The catalytic activity of the metal-MA hybrid towards the ROP of CL was evidenced by the FTIR-RI method. The % yield, degradation temperature (Td), melting temperature (Tm) and molecular weight (Mw) of poly(ε-caprolactone) (PCL) were also investigated. The structure of PCL was comprehended by analysing its NMR spectrum. The activation energy (Ea) for the ROP of CL was determined as 10,363 kcal/mol. A linear increase in Mw of PCL with the increasing [M0/I0] ratio was also noticed.

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Authors and Affiliations

  1. Department of Chemistry, SRNM College, Sattur, 626203, Tamilnadu, India

    L. Kannammal

  2. Department of Polymer Technology, KCET, Madurai, 625701, Tamilnadu, India

    B. Meeenarathi

  3. Department of Physics, Hindustan Institute of Technology and Science, Chennai, 603103, Tamilnadu, India

    V. Parthasarathy

  4. Department of Chemical Engineering, National Taiwan University, Taipei, 10617, Taiwan

    R. Anbarasan

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  1. L. Kannammal
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Correspondence to R. Anbarasan.

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Kannammal, L., Meeenarathi, B., Parthasarathy, V. et al. Synthesis and characterization of metal-mercaptoacetate hybrids and its application towards ring-opening polymerization of ε-caprolactone: a comparative study. Polym. Bull. 79, 9001–9023 (2022). https://doi.org/10.1007/s00289-021-03939-9

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  • DOI: https://doi.org/10.1007/s00289-021-03939-9

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