Enhanced crystallization, thermal properties, and hydrolysis resistance of poly(L-lactic acid) and its stereocomplex by incorporation of graphene nanoplatelets

© 2017 Elsevier Ltd Poly(D-lactic acid) (PDLA) and graphene nanoplatelets were used as nucleating agents for poly(L-lactic acid) (PLLA). The graphene (1 wt%) shows a more pronounced effect than PDLA in facilitating PLLA crystallization. Graphene effect on crystallization of stereocomplex (SC) polyla...

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Main Authors: Girdthep S., Sankong W., Pongmalee A., Saelee T., Punyodom W., Meepowpan P., Worajittiphon P.
Format: Journal
Published: 2017
Online Access:https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85019871074&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/40219
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Institution: Chiang Mai University
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spelling th-cmuir.6653943832-402192017-09-28T04:08:23Z Enhanced crystallization, thermal properties, and hydrolysis resistance of poly(L-lactic acid) and its stereocomplex by incorporation of graphene nanoplatelets Girdthep S. Sankong W. Pongmalee A. Saelee T. Punyodom W. Meepowpan P. Worajittiphon P. © 2017 Elsevier Ltd Poly(D-lactic acid) (PDLA) and graphene nanoplatelets were used as nucleating agents for poly(L-lactic acid) (PLLA). The graphene (1 wt%) shows a more pronounced effect than PDLA in facilitating PLLA crystallization. Graphene effect on crystallization of stereocomplex (SC) polylactide is also demonstrated. Although medium molecular weight PLLA was blended with a limited content (1 wt%) of low molecular weight PDLA in the presence of graphene (0.5 phr), SC melting temperature is slightly increased without the use of high molecular weight polylactide pair. Also, optimal graphene content (0.5 phr–1.5 phr) promotes crystallization of PLLA homocrystals in the three-component system (PLLA/PDLA/graphene). Graphene additionally enhances Young's modulus and barrier property to thermal degradation of both PLLA and SC systems. Furthermore, PLLA/graphene is more resistant to hydrolysis than PLLA. Likewise, PLLA/PDLA/graphene is more stable than PLLA/PDLA during hydrolysis. 2017-09-28T04:08:23Z 2017-09-28T04:08:23Z Journal 01429418 2-s2.0-85019871074 10.1016/j.polymertesting.2017.05.009 https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85019871074&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/40219
institution Chiang Mai University
building Chiang Mai University Library
country Thailand
collection CMU Intellectual Repository
description © 2017 Elsevier Ltd Poly(D-lactic acid) (PDLA) and graphene nanoplatelets were used as nucleating agents for poly(L-lactic acid) (PLLA). The graphene (1 wt%) shows a more pronounced effect than PDLA in facilitating PLLA crystallization. Graphene effect on crystallization of stereocomplex (SC) polylactide is also demonstrated. Although medium molecular weight PLLA was blended with a limited content (1 wt%) of low molecular weight PDLA in the presence of graphene (0.5 phr), SC melting temperature is slightly increased without the use of high molecular weight polylactide pair. Also, optimal graphene content (0.5 phr–1.5 phr) promotes crystallization of PLLA homocrystals in the three-component system (PLLA/PDLA/graphene). Graphene additionally enhances Young's modulus and barrier property to thermal degradation of both PLLA and SC systems. Furthermore, PLLA/graphene is more resistant to hydrolysis than PLLA. Likewise, PLLA/PDLA/graphene is more stable than PLLA/PDLA during hydrolysis.
format Journal
author Girdthep S.
Sankong W.
Pongmalee A.
Saelee T.
Punyodom W.
Meepowpan P.
Worajittiphon P.
spellingShingle Girdthep S.
Sankong W.
Pongmalee A.
Saelee T.
Punyodom W.
Meepowpan P.
Worajittiphon P.
Enhanced crystallization, thermal properties, and hydrolysis resistance of poly(L-lactic acid) and its stereocomplex by incorporation of graphene nanoplatelets
author_facet Girdthep S.
Sankong W.
Pongmalee A.
Saelee T.
Punyodom W.
Meepowpan P.
Worajittiphon P.
author_sort Girdthep S.
title Enhanced crystallization, thermal properties, and hydrolysis resistance of poly(L-lactic acid) and its stereocomplex by incorporation of graphene nanoplatelets
title_short Enhanced crystallization, thermal properties, and hydrolysis resistance of poly(L-lactic acid) and its stereocomplex by incorporation of graphene nanoplatelets
title_full Enhanced crystallization, thermal properties, and hydrolysis resistance of poly(L-lactic acid) and its stereocomplex by incorporation of graphene nanoplatelets
title_fullStr Enhanced crystallization, thermal properties, and hydrolysis resistance of poly(L-lactic acid) and its stereocomplex by incorporation of graphene nanoplatelets
title_full_unstemmed Enhanced crystallization, thermal properties, and hydrolysis resistance of poly(L-lactic acid) and its stereocomplex by incorporation of graphene nanoplatelets
title_sort enhanced crystallization, thermal properties, and hydrolysis resistance of poly(l-lactic acid) and its stereocomplex by incorporation of graphene nanoplatelets
publishDate 2017
url https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85019871074&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/40219
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