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(CH 3 )COOnC 4 H 9 ) 2 ) initiator in the ring-opening polymerization (ROP) of ε-caprolactone (ε-CL) was firstly investigated by non-isothermal DSC. The Sn(OCH(CH 3 )COOnC 4 H 9 ) 2 initiator was successfully...

Full description

Saved in:
Bibliographic Details
Main Authors: Punyodom W., Limwanich W., Meepowpan P.
Format: Journal
Published: 2017
Online Access:https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85026912840&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/40112
Tags: Add Tag
No Tags, Be the first to tag this record!
Institution: Chiang Mai University
id th-cmuir.6653943832-40112
record_format dspace
spelling th-cmuir.6653943832-401122017-09-28T04:05:18Z 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 Punyodom W. Limwanich W. Meepowpan P. © 2017 Elsevier B.V. The catalytic behavior of the novel tin(II) n-butyl L-lactate (Sn(OCH(CH 3 )COOnC 4 H 9 ) 2 ) initiator in the ring-opening polymerization (ROP) of ε-caprolactone (ε-CL) was firstly investigated by non-isothermal DSC. The Sn(OCH(CH 3 )COOnC 4 H 9 ) 2 initiator was successfully synthesized from the reaction of tin(II) chloride (SnCl 2 ), diethylamine (Et 2 NH) and n-butyl L-lactate (CH 3 CH(OH)COOnC 4 H 9 ). The synthesized Sn(OCH(CH 3 )COOnC 4 H 9 ) 2 was characterized by FT-IR, 1 H NMR and 13 C 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(CH 3 )COOnC 4 H 9 ) 2 concentration. The average values of activation energy (E a ) obtained from Starink isoconversional method for the ROP of ε-CL initiated by 1.0, 2.0 and 3.0 mol% of Sn(OCH(CH 3 )COOnC 4 H 9 ) 2 were 74 ± 5, 72 ± 5 and 68 ± 2 kJ/mol, respectively. Furthermore, the aggregation and non-aggregation equilibrium of Sn(OCH(CH 3 )COOnC 4 H 9 ) 2 initiator 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. 2017-09-28T04:05:18Z 2017-09-28T04:05:18Z 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/6653943832/40112
institution Chiang Mai University
building Chiang Mai University Library
country Thailand
collection CMU Intellectual Repository
description © 2017 Elsevier B.V. The catalytic behavior of the novel tin(II) n-butyl L-lactate (Sn(OCH(CH 3 )COOnC 4 H 9 ) 2 ) initiator in the ring-opening polymerization (ROP) of ε-caprolactone (ε-CL) was firstly investigated by non-isothermal DSC. The Sn(OCH(CH 3 )COOnC 4 H 9 ) 2 initiator was successfully synthesized from the reaction of tin(II) chloride (SnCl 2 ), diethylamine (Et 2 NH) and n-butyl L-lactate (CH 3 CH(OH)COOnC 4 H 9 ). The synthesized Sn(OCH(CH 3 )COOnC 4 H 9 ) 2 was characterized by FT-IR, 1 H NMR and 13 C 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(CH 3 )COOnC 4 H 9 ) 2 concentration. The average values of activation energy (E a ) obtained from Starink isoconversional method for the ROP of ε-CL initiated by 1.0, 2.0 and 3.0 mol% of Sn(OCH(CH 3 )COOnC 4 H 9 ) 2 were 74 ± 5, 72 ± 5 and 68 ± 2 kJ/mol, respectively. Furthermore, the aggregation and non-aggregation equilibrium of Sn(OCH(CH 3 )COOnC 4 H 9 ) 2 initiator 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 Punyodom W.
Limwanich W.
Meepowpan P.
spellingShingle Punyodom W.
Limwanich W.
Meepowpan P.
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
author_facet Punyodom W.
Limwanich W.
Meepowpan P.
author_sort Punyodom W.
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 2017
url https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85026912840&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/40112
_version_ 1681421749765275648