Anbarasan RKannammal LMeenarathi BTung K.-L.KUO-LUN TUNG2021-08-052021-08-0520191700839https://www.scopus.com/inward/record.uri?eid=2-s2.0-85070927944&doi=10.1007%2fs00289-018-2658-6&partnerID=40&md5=7559b2a8eca7ce4b1ee6a9a94ccccd70https://scholars.lib.ntu.edu.tw/handle/123456789/576757A novel alkaline earth metal salt such as barium mercaptoacetate (Ba-MA) was successfully synthesized and characterized by various analytical techniques such as FTIR spectroscopy, UV–visible spectroscopy, XRD, particle size analysis and SEM. Further, its application towards the ring opening polymerization of ε-caprolactone (CL) as a novel initiator was tested at two different experimental conditions such as monomer to initiator ratio [M/I] variation and temperature variation under nitrogen atmosphere with mild stirring condition. The poly(caprolactone) (PCL) formation in the presence of Ba-MA was confirmed by measuring the melting temperature (Tm), degradation temperature (Td), XRD and GPC of PCL. The Tm of PCL varied between 68.4 and 71.6?°C while increasing the [M/I]. The chemical structure and functional groups of PCL were confirmed by NMR spectroscopy and FTIR spectroscopy, respectively. The band gap (Eg) value increased with the increase in [M/I] ratio due to the decrease in Ba content. ? 2018, Springer-Verlag GmbH Germany, part of Springer Nature.Alkalinity; Atmospheric temperature; Barium compounds; Energy gap; Fourier transform infrared spectroscopy; Nuclear magnetic resonance spectroscopy; Particle size; Particle size analysis; X ray diffraction; Alkaline earth metal salts; Band gap energy; Degradation temperatures; Experimental conditions; Nitrogen atmospheres; Stirring conditions; Temperature variation; Visible spectroscopy; Ring opening polymerization[SDGs]SDG12journal article10.1007/s00289-018-2658-62-s2.0-85070927944