Enhancing Stereocomplexation Ability of Polylactide by Coalescing from Its Inclusion Complex with Urea

In this study, polylactide/urea complexes were successfully prepared by the electrospinning method, then the host urea component was removed to obtain a coalesced poly(L-lactide) (PLLA)/poly(D-lactide) (PDLA) blend. The crystallization behavior of the coalesced PLLA/PDLA blend (c-PLLA/PDLA) was stud...

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Main Authors:	Ping Liu, Xiao-Tong Chen, Hai-Mu Ye
Format:	Article
Language:	English
Published:	MDPI AG 2017-11-01
Series:	Polymers
Subjects:	polylactide urea inclusion complex crystallization stereocomplex
Online Access:	https://www.mdpi.com/2073-4360/9/11/592

id	doaj-9e8f56b9b1ce404ab96085ec6160b66a
record_format	Article
spelling	doaj-9e8f56b9b1ce404ab96085ec6160b66a2020-11-24T23:55:28ZengMDPI AGPolymers2073-43602017-11-0191159210.3390/polym9110592polym9110592Enhancing Stereocomplexation Ability of Polylactide by Coalescing from Its Inclusion Complex with UreaPing Liu0Xiao-Tong Chen1Hai-Mu Ye2Department of Materials Science and Engineering, China University of Petroleum, Beijing 102249, ChinaDepartment of Materials Science and Engineering, China University of Petroleum, Beijing 102249, ChinaDepartment of Materials Science and Engineering, China University of Petroleum, Beijing 102249, ChinaIn this study, polylactide/urea complexes were successfully prepared by the electrospinning method, then the host urea component was removed to obtain a coalesced poly(L-lactide) (PLLA)/poly(D-lactide) (PDLA) blend. The crystallization behavior of the coalesced PLLA/PDLA blend (c-PLLA/PDLA) was studied by a differential scanning calorimeter (DSC) and Fourier transform infrared (FTIR) spectroscopy. The c-PLLA/PDLA was found to show better crystallization ability than normal PLLA/PDLA blend (r-PLLA/PDLA). More interestingly, the c-PLLA/PDLA effectively and solely crystallized into stereocomplex crystals during the non-isothermal melt-crystallization process, and the reason was attributed to the equally-distributing state of PLLA and PDLA chains in the PLLA/PDLA/urea complex, which led to good interconnection between PLLA and PDLA chains when the urea frameworks were instantly removed.https://www.mdpi.com/2073-4360/9/11/592polylactideureainclusion complexcrystallizationstereocomplex
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Ping Liu Xiao-Tong Chen Hai-Mu Ye
spellingShingle	Ping Liu Xiao-Tong Chen Hai-Mu Ye Enhancing Stereocomplexation Ability of Polylactide by Coalescing from Its Inclusion Complex with Urea Polymers polylactide urea inclusion complex crystallization stereocomplex
author_facet	Ping Liu Xiao-Tong Chen Hai-Mu Ye
author_sort	Ping Liu
title	Enhancing Stereocomplexation Ability of Polylactide by Coalescing from Its Inclusion Complex with Urea
title_short	Enhancing Stereocomplexation Ability of Polylactide by Coalescing from Its Inclusion Complex with Urea
title_full	Enhancing Stereocomplexation Ability of Polylactide by Coalescing from Its Inclusion Complex with Urea
title_fullStr	Enhancing Stereocomplexation Ability of Polylactide by Coalescing from Its Inclusion Complex with Urea
title_full_unstemmed	Enhancing Stereocomplexation Ability of Polylactide by Coalescing from Its Inclusion Complex with Urea
title_sort	enhancing stereocomplexation ability of polylactide by coalescing from its inclusion complex with urea
publisher	MDPI AG
series	Polymers
issn	2073-4360
publishDate	2017-11-01
description	In this study, polylactide/urea complexes were successfully prepared by the electrospinning method, then the host urea component was removed to obtain a coalesced poly(L-lactide) (PLLA)/poly(D-lactide) (PDLA) blend. The crystallization behavior of the coalesced PLLA/PDLA blend (c-PLLA/PDLA) was studied by a differential scanning calorimeter (DSC) and Fourier transform infrared (FTIR) spectroscopy. The c-PLLA/PDLA was found to show better crystallization ability than normal PLLA/PDLA blend (r-PLLA/PDLA). More interestingly, the c-PLLA/PDLA effectively and solely crystallized into stereocomplex crystals during the non-isothermal melt-crystallization process, and the reason was attributed to the equally-distributing state of PLLA and PDLA chains in the PLLA/PDLA/urea complex, which led to good interconnection between PLLA and PDLA chains when the urea frameworks were instantly removed.
topic	polylactide urea inclusion complex crystallization stereocomplex
url	https://www.mdpi.com/2073-4360/9/11/592
work_keys_str_mv	AT pingliu enhancingstereocomplexationabilityofpolylactidebycoalescingfromitsinclusioncomplexwithurea AT xiaotongchen enhancingstereocomplexationabilityofpolylactidebycoalescingfromitsinclusioncomplexwithurea AT haimuye enhancingstereocomplexationabilityofpolylactidebycoalescingfromitsinclusioncomplexwithurea
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Enhancing Stereocomplexation Ability of Polylactide by Coalescing from Its Inclusion Complex with Urea

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