Synthesis and Biodegradation of Poly(l-lactide-co-β-propiolactone)

Although the copolymerizations of l-lactide (LA) with seven- or six-membered ring lactones have been extensively studied, the copolymerizations of LA with four-membered ring lactones have scarcely been reported. In this work, we studied the copolymerization of LA with β-propiolactone (PL) and the pr...

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Main Authors:	Yuushou Nakayama, Kazuki Aihara, Zhengguo Cai, Takeshi Shiono, Chikara Tsutsumi
Format:	Article
Language:	English
Published:	MDPI AG 2017-06-01
Series:	International Journal of Molecular Sciences
Subjects:	copolymerization ">l-lactide β-propiolactone trifluoromethanesulfonic acid poly( ">l-lactide-co-β-propiolactone) thermal properties biodegradation
Online Access:	http://www.mdpi.com/1422-0067/18/6/1312

id	doaj-32351a216bf8409aab9368e8da49c4d7
record_format	Article
spelling	doaj-32351a216bf8409aab9368e8da49c4d72020-11-24T22:07:36ZengMDPI AGInternational Journal of Molecular Sciences1422-00672017-06-01186131210.3390/ijms18061312ijms18061312Synthesis and Biodegradation of Poly(l-lactide-co-β-propiolactone)Yuushou Nakayama0Kazuki Aihara1Zhengguo Cai2Takeshi Shiono3Chikara Tsutsumi4Department of Applied Chemistry, Graduate School of Engineering, Hiroshima University, Higashi-Hiroshima 739-8527, JapanDepartment of Applied Chemistry, Graduate School of Engineering, Hiroshima University, Higashi-Hiroshima 739-8527, JapanState Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Material Science and Engineering, Donghua University, Shanghai 201620, ChinaDepartment of Applied Chemistry, Graduate School of Engineering, Hiroshima University, Higashi-Hiroshima 739-8527, JapanDepartment of Applied Chemistry and Biotechnology, Niihama National College of Technology, Niihama 792-8580, JapanAlthough the copolymerizations of l-lactide (LA) with seven- or six-membered ring lactones have been extensively studied, the copolymerizations of LA with four-membered ring lactones have scarcely been reported. In this work, we studied the copolymerization of LA with β-propiolactone (PL) and the properties of the obtained copolymers. The copolymerization of LA with PL was carried out using trifluoromethanesulfonic acid as a catalyst and methanol as an initiator to produce poly(LA-co-PL) with Mn of ~50,000 and PL-content of 6–67 mol %. The Tg values of the copolymers were rapidly lowered with increasing PL-contents. The Tm and ΔHm of the copolymers gradually decreased with increasing PL-contents, indicating their decreased crystallinity. Biodegradation test of the copolymers in compost demonstrated their improved biodegradability in comparison with the homopolymer of LA.http://www.mdpi.com/1422-0067/18/6/1312copolymerization">l-lactideβ-propiolactonetrifluoromethanesulfonic acidpoly(">l-lactide-co-β-propiolactone)thermal propertiesbiodegradation
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Yuushou Nakayama Kazuki Aihara Zhengguo Cai Takeshi Shiono Chikara Tsutsumi
spellingShingle	Yuushou Nakayama Kazuki Aihara Zhengguo Cai Takeshi Shiono Chikara Tsutsumi Synthesis and Biodegradation of Poly(l-lactide-co-β-propiolactone) International Journal of Molecular Sciences copolymerization ">l-lactide β-propiolactone trifluoromethanesulfonic acid poly( ">l-lactide-co-β-propiolactone) thermal properties biodegradation
author_facet	Yuushou Nakayama Kazuki Aihara Zhengguo Cai Takeshi Shiono Chikara Tsutsumi
author_sort	Yuushou Nakayama
title	Synthesis and Biodegradation of Poly(l-lactide-co-β-propiolactone)
title_short	Synthesis and Biodegradation of Poly(l-lactide-co-β-propiolactone)
title_full	Synthesis and Biodegradation of Poly(l-lactide-co-β-propiolactone)
title_fullStr	Synthesis and Biodegradation of Poly(l-lactide-co-β-propiolactone)
title_full_unstemmed	Synthesis and Biodegradation of Poly(l-lactide-co-β-propiolactone)
title_sort	synthesis and biodegradation of poly(l-lactide-co-β-propiolactone)
publisher	MDPI AG
series	International Journal of Molecular Sciences
issn	1422-0067
publishDate	2017-06-01
description	Although the copolymerizations of l-lactide (LA) with seven- or six-membered ring lactones have been extensively studied, the copolymerizations of LA with four-membered ring lactones have scarcely been reported. In this work, we studied the copolymerization of LA with β-propiolactone (PL) and the properties of the obtained copolymers. The copolymerization of LA with PL was carried out using trifluoromethanesulfonic acid as a catalyst and methanol as an initiator to produce poly(LA-co-PL) with Mn of ~50,000 and PL-content of 6–67 mol %. The Tg values of the copolymers were rapidly lowered with increasing PL-contents. The Tm and ΔHm of the copolymers gradually decreased with increasing PL-contents, indicating their decreased crystallinity. Biodegradation test of the copolymers in compost demonstrated their improved biodegradability in comparison with the homopolymer of LA.
topic	copolymerization ">l-lactide β-propiolactone trifluoromethanesulfonic acid poly( ">l-lactide-co-β-propiolactone) thermal properties biodegradation
url	http://www.mdpi.com/1422-0067/18/6/1312
work_keys_str_mv	AT yuushounakayama synthesisandbiodegradationofpolyllactidecobpropiolactone AT kazukiaihara synthesisandbiodegradationofpolyllactidecobpropiolactone AT zhengguocai synthesisandbiodegradationofpolyllactidecobpropiolactone AT takeshishiono synthesisandbiodegradationofpolyllactidecobpropiolactone AT chikaratsutsumi synthesisandbiodegradationofpolyllactidecobpropiolactone
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Synthesis and Biodegradation of Poly(l-lactide-co-β-propiolactone)

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