Tailoring the crystallization behavior of poly(L-lactide) with self-assembly-type oxalamide compounds as nucleators: 1. Effect of terminal configuration of the nucleators
[Display omitted] •Oxalamide compounds (NAs) are tailor-made as novel effective nucleators for PLLA.•The end structure affects thermal behavior and nucleation efficiency of the NAs.•The oxalamide compounds triggered “shish-kebab” morphology of PLLA crystals.•The crystallization kinetics of PLLA was...
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Veröffentlicht in: | European polymer journal 2015-09, Vol.70, p.400-411 |
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creator | Ma, Piming Xu, Yunsheng Shen, Tianfeng Dong, Weifu Chen, Mingqing Lemstra, Piet J. |
description | [Display omitted]
•Oxalamide compounds (NAs) are tailor-made as novel effective nucleators for PLLA.•The end structure affects thermal behavior and nucleation efficiency of the NAs.•The oxalamide compounds triggered “shish-kebab” morphology of PLLA crystals.•The crystallization kinetics of PLLA was enhanced by the oxalamide compounds.
The bio-based and biocompostable semi-crystalline poly(L-lactide), PLLA, suffers from slow crystallization rate. Oxalamide compounds are tailor-made as novel self-assembly-type nucleators in this work, which altered significantly the crystallization kinetics of the PLLA. The terminal structures (cyclohexyl, benzyl and phenyl) show strong influence on their self-organization and nucleation efficiency. Their self-organizing temperature sequence (measured via rheology) in the PLLA melt is cyclohexyl>benzyl>phenyl≈190°C, while the nucleation activity follows a reverse order. Consequently, the compounds capped with phenyl group exhibit the highest nucleation efficiency. The oxalamide compounds in the PLLA melt showed varied depression in crystallization and dissolution temperatures, demonstrating a designable miscibility. Interestingly, the dissolved oxalamide compounds could organize into “shish-like” superstructures that subsequently triggered “shish-kebab” morphology of PLLA crystals free of any flow or shear. With the aid of phenyl-capped oxalamide compound (e.g. 0.75wt.%), the crystallization of PLLA occurred at 108°C with a crystallinity of 35% even upon fast cooling (20°C/min), while the half-life crystallization time (t0.5) was dramatically reduced by 95% in a wide temperate range. In addition, the oxalamide compounds could significantly reduce the PLLA crystal size without modification on crystal form. |
doi_str_mv | 10.1016/j.eurpolymj.2015.07.040 |
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•Oxalamide compounds (NAs) are tailor-made as novel effective nucleators for PLLA.•The end structure affects thermal behavior and nucleation efficiency of the NAs.•The oxalamide compounds triggered “shish-kebab” morphology of PLLA crystals.•The crystallization kinetics of PLLA was enhanced by the oxalamide compounds.
The bio-based and biocompostable semi-crystalline poly(L-lactide), PLLA, suffers from slow crystallization rate. Oxalamide compounds are tailor-made as novel self-assembly-type nucleators in this work, which altered significantly the crystallization kinetics of the PLLA. The terminal structures (cyclohexyl, benzyl and phenyl) show strong influence on their self-organization and nucleation efficiency. Their self-organizing temperature sequence (measured via rheology) in the PLLA melt is cyclohexyl>benzyl>phenyl≈190°C, while the nucleation activity follows a reverse order. Consequently, the compounds capped with phenyl group exhibit the highest nucleation efficiency. The oxalamide compounds in the PLLA melt showed varied depression in crystallization and dissolution temperatures, demonstrating a designable miscibility. Interestingly, the dissolved oxalamide compounds could organize into “shish-like” superstructures that subsequently triggered “shish-kebab” morphology of PLLA crystals free of any flow or shear. With the aid of phenyl-capped oxalamide compound (e.g. 0.75wt.%), the crystallization of PLLA occurred at 108°C with a crystallinity of 35% even upon fast cooling (20°C/min), while the half-life crystallization time (t0.5) was dramatically reduced by 95% in a wide temperate range. In addition, the oxalamide compounds could significantly reduce the PLLA crystal size without modification on crystal form.</description><identifier>ISSN: 0014-3057</identifier><identifier>EISSN: 1873-1945</identifier><identifier>DOI: 10.1016/j.eurpolymj.2015.07.040</identifier><language>eng</language><publisher>Elsevier Ltd</publisher><subject>Cooling ; Crystallization ; Crystallization kinetics ; Crystals ; Dissolution ; Nucleation ; Oxalamide compounds ; Phenyls ; Poly(L-lactide) ; Shear ; Terminals</subject><ispartof>European polymer journal, 2015-09, Vol.70, p.400-411</ispartof><rights>2015 Elsevier Ltd</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c348t-c7ab04a324e1df43e43a20ff7df647d72d1342e73e4424b6bf65b6f356c347ac3</citedby><cites>FETCH-LOGICAL-c348t-c7ab04a324e1df43e43a20ff7df647d72d1342e73e4424b6bf65b6f356c347ac3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S0014305715003882$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3537,27901,27902,65306</link.rule.ids></links><search><creatorcontrib>Ma, Piming</creatorcontrib><creatorcontrib>Xu, Yunsheng</creatorcontrib><creatorcontrib>Shen, Tianfeng</creatorcontrib><creatorcontrib>Dong, Weifu</creatorcontrib><creatorcontrib>Chen, Mingqing</creatorcontrib><creatorcontrib>Lemstra, Piet J.</creatorcontrib><title>Tailoring the crystallization behavior of poly(L-lactide) with self-assembly-type oxalamide compounds as nucleators: 1. Effect of terminal configuration of the nucleators</title><title>European polymer journal</title><description>[Display omitted]
•Oxalamide compounds (NAs) are tailor-made as novel effective nucleators for PLLA.•The end structure affects thermal behavior and nucleation efficiency of the NAs.•The oxalamide compounds triggered “shish-kebab” morphology of PLLA crystals.•The crystallization kinetics of PLLA was enhanced by the oxalamide compounds.
The bio-based and biocompostable semi-crystalline poly(L-lactide), PLLA, suffers from slow crystallization rate. Oxalamide compounds are tailor-made as novel self-assembly-type nucleators in this work, which altered significantly the crystallization kinetics of the PLLA. The terminal structures (cyclohexyl, benzyl and phenyl) show strong influence on their self-organization and nucleation efficiency. Their self-organizing temperature sequence (measured via rheology) in the PLLA melt is cyclohexyl>benzyl>phenyl≈190°C, while the nucleation activity follows a reverse order. Consequently, the compounds capped with phenyl group exhibit the highest nucleation efficiency. The oxalamide compounds in the PLLA melt showed varied depression in crystallization and dissolution temperatures, demonstrating a designable miscibility. Interestingly, the dissolved oxalamide compounds could organize into “shish-like” superstructures that subsequently triggered “shish-kebab” morphology of PLLA crystals free of any flow or shear. With the aid of phenyl-capped oxalamide compound (e.g. 0.75wt.%), the crystallization of PLLA occurred at 108°C with a crystallinity of 35% even upon fast cooling (20°C/min), while the half-life crystallization time (t0.5) was dramatically reduced by 95% in a wide temperate range. In addition, the oxalamide compounds could significantly reduce the PLLA crystal size without modification on crystal form.</description><subject>Cooling</subject><subject>Crystallization</subject><subject>Crystallization kinetics</subject><subject>Crystals</subject><subject>Dissolution</subject><subject>Nucleation</subject><subject>Oxalamide compounds</subject><subject>Phenyls</subject><subject>Poly(L-lactide)</subject><subject>Shear</subject><subject>Terminals</subject><issn>0014-3057</issn><issn>1873-1945</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2015</creationdate><recordtype>article</recordtype><recordid>eNqFUc1u1DAQthBIXVqeoT6WQ9Jx7MSFW1WVH2klLu3Zcpxx1ysnDrZTCI_EU-JoET1ymsP3NzMfIZcMagasuz7WuMQ5-HU81g2wtgZZg4BXZMduJK_YB9G-JjsAJioOrTwjb1M6AoDkHd-R3w_a-RDd9ETzAamJa8rae_dLZxcm2uNBP7sQabB0y7jaV16b7AZ8T3-4fKAJva10Sjj2fq3yOiMNP7XXY6FQE8Y5LNOQqE50WoxHnUNMHymr6b21aPLmmzGObtK-0CfrnpZ4it6QstGL7IK8sdonfPd3npPHT_cPd1-q_bfPX-9u95Xh4iZXRuoehOaNQDZYwVFw3YC1crCdkINsBsZFg7IAohF919uu7TvL267opTb8nFydfOcYvi-YshpdMui9njAsSTHJgYHsJCtUeaKaGFKKaNUc3ajjqhiorR11VP_aUVs7CqQq7RTl7UmJ5ZJnh1El43AyOLhY_qKG4P7r8Qe8M6IL</recordid><startdate>20150901</startdate><enddate>20150901</enddate><creator>Ma, Piming</creator><creator>Xu, Yunsheng</creator><creator>Shen, Tianfeng</creator><creator>Dong, Weifu</creator><creator>Chen, Mingqing</creator><creator>Lemstra, Piet J.</creator><general>Elsevier Ltd</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>8FD</scope><scope>JG9</scope></search><sort><creationdate>20150901</creationdate><title>Tailoring the crystallization behavior of poly(L-lactide) with self-assembly-type oxalamide compounds as nucleators: 1. Effect of terminal configuration of the nucleators</title><author>Ma, Piming ; Xu, Yunsheng ; Shen, Tianfeng ; Dong, Weifu ; Chen, Mingqing ; Lemstra, Piet J.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c348t-c7ab04a324e1df43e43a20ff7df647d72d1342e73e4424b6bf65b6f356c347ac3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2015</creationdate><topic>Cooling</topic><topic>Crystallization</topic><topic>Crystallization kinetics</topic><topic>Crystals</topic><topic>Dissolution</topic><topic>Nucleation</topic><topic>Oxalamide compounds</topic><topic>Phenyls</topic><topic>Poly(L-lactide)</topic><topic>Shear</topic><topic>Terminals</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Ma, Piming</creatorcontrib><creatorcontrib>Xu, Yunsheng</creatorcontrib><creatorcontrib>Shen, Tianfeng</creatorcontrib><creatorcontrib>Dong, Weifu</creatorcontrib><creatorcontrib>Chen, Mingqing</creatorcontrib><creatorcontrib>Lemstra, Piet J.</creatorcontrib><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>European polymer journal</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Ma, Piming</au><au>Xu, Yunsheng</au><au>Shen, Tianfeng</au><au>Dong, Weifu</au><au>Chen, Mingqing</au><au>Lemstra, Piet J.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Tailoring the crystallization behavior of poly(L-lactide) with self-assembly-type oxalamide compounds as nucleators: 1. Effect of terminal configuration of the nucleators</atitle><jtitle>European polymer journal</jtitle><date>2015-09-01</date><risdate>2015</risdate><volume>70</volume><spage>400</spage><epage>411</epage><pages>400-411</pages><issn>0014-3057</issn><eissn>1873-1945</eissn><abstract>[Display omitted]
•Oxalamide compounds (NAs) are tailor-made as novel effective nucleators for PLLA.•The end structure affects thermal behavior and nucleation efficiency of the NAs.•The oxalamide compounds triggered “shish-kebab” morphology of PLLA crystals.•The crystallization kinetics of PLLA was enhanced by the oxalamide compounds.
The bio-based and biocompostable semi-crystalline poly(L-lactide), PLLA, suffers from slow crystallization rate. Oxalamide compounds are tailor-made as novel self-assembly-type nucleators in this work, which altered significantly the crystallization kinetics of the PLLA. The terminal structures (cyclohexyl, benzyl and phenyl) show strong influence on their self-organization and nucleation efficiency. Their self-organizing temperature sequence (measured via rheology) in the PLLA melt is cyclohexyl>benzyl>phenyl≈190°C, while the nucleation activity follows a reverse order. Consequently, the compounds capped with phenyl group exhibit the highest nucleation efficiency. The oxalamide compounds in the PLLA melt showed varied depression in crystallization and dissolution temperatures, demonstrating a designable miscibility. Interestingly, the dissolved oxalamide compounds could organize into “shish-like” superstructures that subsequently triggered “shish-kebab” morphology of PLLA crystals free of any flow or shear. With the aid of phenyl-capped oxalamide compound (e.g. 0.75wt.%), the crystallization of PLLA occurred at 108°C with a crystallinity of 35% even upon fast cooling (20°C/min), while the half-life crystallization time (t0.5) was dramatically reduced by 95% in a wide temperate range. In addition, the oxalamide compounds could significantly reduce the PLLA crystal size without modification on crystal form.</abstract><pub>Elsevier Ltd</pub><doi>10.1016/j.eurpolymj.2015.07.040</doi><tpages>12</tpages></addata></record> |
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subjects | Cooling Crystallization Crystallization kinetics Crystals Dissolution Nucleation Oxalamide compounds Phenyls Poly(L-lactide) Shear Terminals |
title | Tailoring the crystallization behavior of poly(L-lactide) with self-assembly-type oxalamide compounds as nucleators: 1. Effect of terminal configuration of the nucleators |
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