Tin(II) n-butyl L-lactate as novel initiator for the ring-opening polymerization of ε-caprolactone: Kinetics and aggregation equilibrium analysis by non-isothermal DSC

© 2017 Elsevier B.V. The catalytic behavior of the novel tin(II) n-butyl L-lactate (Sn(OCH(CH3)COOnC4H9)2) initiator in the ring-opening polymerization (ROP) of ε-caprolactone (ε-CL) was firstly investigated by non-isothermal DSC. The Sn(OCH(CH3)COOnC4H9)2initiator was successfully synthesized from...

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Main Authors: Winita Punyodom, Wanich Limwanich, Puttinan Meepowpan
Format: Journal
Published: 2018
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spelling th-cmuir.6653943832-569652018-09-05T03:52:57Z Tin(II) n-butyl L-lactate as novel initiator for the ring-opening polymerization of ε-caprolactone: Kinetics and aggregation equilibrium analysis by non-isothermal DSC Winita Punyodom Wanich Limwanich Puttinan Meepowpan Chemistry Physics and Astronomy © 2017 Elsevier B.V. The catalytic behavior of the novel tin(II) n-butyl L-lactate (Sn(OCH(CH3)COOnC4H9)2) initiator in the ring-opening polymerization (ROP) of ε-caprolactone (ε-CL) was firstly investigated by non-isothermal DSC. The Sn(OCH(CH3)COOnC4H9)2initiator was successfully synthesized from the reaction of tin(II) chloride (SnCl2), diethylamine (Et2NH) and n-butyl L-lactate (CH3CH(OH)COOnC4H9). The synthesized Sn(OCH(CH3)COOnC4H9)2was characterized by FT-IR,1H NMR and13C NMR techniques. The advantages of this initiator were high oxygen-moisture stability and solubility in common organic solvent. From DSC analysis, the polymerization rate of ε-CL was controlled by Sn(OCH(CH3)COOnC4H9)2concentration. The average values of activation energy (Ea) obtained from Starink isoconversional method for the ROP of ε-CL initiated by 1.0, 2.0 and 3.0 mol% of Sn(OCH(CH3)COOnC4H9)2were 74 ± 5, 72 ± 5 and 68 ± 2 kJ/mol, respectively. Furthermore, the aggregation and non-aggregation equilibrium of Sn(OCH(CH3)COOnC4H9)2initiator in the ROP of ε-CL was also investigated by non-isothermal DSC. The degree of aggregation (m) of initiator was rapidly determined using new derived equation based on non-isothermal DSC approach. The polymerization mechanism was also studied and proposed through the coordination-insertion mechanism. 2018-09-05T03:32:43Z 2018-09-05T03:32:43Z 2017-09-10 Journal 00406031 2-s2.0-85026912840 10.1016/j.tca.2017.06.025 https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85026912840&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/56965
institution Chiang Mai University
building Chiang Mai University Library
country Thailand
collection CMU Intellectual Repository
topic Chemistry
Physics and Astronomy
spellingShingle Chemistry
Physics and Astronomy
Winita Punyodom
Wanich Limwanich
Puttinan Meepowpan
Tin(II) n-butyl L-lactate as novel initiator for the ring-opening polymerization of ε-caprolactone: Kinetics and aggregation equilibrium analysis by non-isothermal DSC
description © 2017 Elsevier B.V. The catalytic behavior of the novel tin(II) n-butyl L-lactate (Sn(OCH(CH3)COOnC4H9)2) initiator in the ring-opening polymerization (ROP) of ε-caprolactone (ε-CL) was firstly investigated by non-isothermal DSC. The Sn(OCH(CH3)COOnC4H9)2initiator was successfully synthesized from the reaction of tin(II) chloride (SnCl2), diethylamine (Et2NH) and n-butyl L-lactate (CH3CH(OH)COOnC4H9). The synthesized Sn(OCH(CH3)COOnC4H9)2was characterized by FT-IR,1H NMR and13C NMR techniques. The advantages of this initiator were high oxygen-moisture stability and solubility in common organic solvent. From DSC analysis, the polymerization rate of ε-CL was controlled by Sn(OCH(CH3)COOnC4H9)2concentration. The average values of activation energy (Ea) obtained from Starink isoconversional method for the ROP of ε-CL initiated by 1.0, 2.0 and 3.0 mol% of Sn(OCH(CH3)COOnC4H9)2were 74 ± 5, 72 ± 5 and 68 ± 2 kJ/mol, respectively. Furthermore, the aggregation and non-aggregation equilibrium of Sn(OCH(CH3)COOnC4H9)2initiator in the ROP of ε-CL was also investigated by non-isothermal DSC. The degree of aggregation (m) of initiator was rapidly determined using new derived equation based on non-isothermal DSC approach. The polymerization mechanism was also studied and proposed through the coordination-insertion mechanism.
format Journal
author Winita Punyodom
Wanich Limwanich
Puttinan Meepowpan
author_facet Winita Punyodom
Wanich Limwanich
Puttinan Meepowpan
author_sort Winita Punyodom
title Tin(II) n-butyl L-lactate as novel initiator for the ring-opening polymerization of ε-caprolactone: Kinetics and aggregation equilibrium analysis by non-isothermal DSC
title_short Tin(II) n-butyl L-lactate as novel initiator for the ring-opening polymerization of ε-caprolactone: Kinetics and aggregation equilibrium analysis by non-isothermal DSC
title_full Tin(II) n-butyl L-lactate as novel initiator for the ring-opening polymerization of ε-caprolactone: Kinetics and aggregation equilibrium analysis by non-isothermal DSC
title_fullStr Tin(II) n-butyl L-lactate as novel initiator for the ring-opening polymerization of ε-caprolactone: Kinetics and aggregation equilibrium analysis by non-isothermal DSC
title_full_unstemmed Tin(II) n-butyl L-lactate as novel initiator for the ring-opening polymerization of ε-caprolactone: Kinetics and aggregation equilibrium analysis by non-isothermal DSC
title_sort tin(ii) n-butyl l-lactate as novel initiator for the ring-opening polymerization of ε-caprolactone: kinetics and aggregation equilibrium analysis by non-isothermal dsc
publishDate 2018
url https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85026912840&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/56965
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