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具有高结晶能力和抗迁移性的聚（丙交酯）-g-聚（丁二酸丁二醇酯-共-己二酸酯）

Poly(lactide)-g-poly(butylene succinate-co-adipate) with High Crystallization Capacity and Migration Resistance.

作者信息

Yang Xi, Xu Huan, Odelius Karin, Hakkarainen Minna

机构信息

Department of Fibre and Polymer Technology, School of Chemical Science and Engineering, KTH Royal Institute of Technology, SE-100 44 Stockholm, Sweden.

出版信息

Materials (Basel). 2016 Apr 27;9(5):313. doi: 10.3390/ma9050313.

DOI:10.3390/ma9050313
PMID:28773437
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5503035/
Abstract

Plasticized polylactide (PLA) with increased crystallization ability and prolonged life-span in practical applications due to the minimal plasticizer migration was prepared. Branched plasticized PLA was successfully obtained by coupling poly(butylene succinate-co-adipate) (PBSA) to crotonic acid (CA) functionalized PLA. The plasticization behavior of PBSA coupled PLA (PLA-CA-PBSA) and its counterpart PBSA blended PLA (PLA/PBSA) were fully elucidated. For both PLA-CA-PBSA and PLA/PBSA, a decrease of to around room temperature and an increase in the elongation at break of PLA from 14% to 165% and 460%, respectively, were determined. The crystallinity was increased from 2.1% to 8.4% for PLA/PBSA and even more, to 10.6%, for PLA-CA-PBSA. Due to the inherent poor miscibility between the PBSA and PLA, phase separation occurred in the blend, while PLA-CA-PBSA showed no phase separation which, together with the higher crystallinity, led to better oxygen barrier properties compared to neat PLA and PLA/PBSA. A higher resistance to migration during hydrolytic degradation for the PLA-CA-PBSA compared to the PLA/PBSA indicated that the plasticization effect of PBSA in the coupled material would be retained for a longer time period.

摘要

制备了具有增强结晶能力且在实际应用中因增塑剂迁移最小而具有更长使用寿命的增塑聚乳酸（PLA）。通过将聚（丁二酸丁二醇酯 - 共 - 己二酸酯）（PBSA）与巴豆酸（CA）官能化的PLA偶联，成功获得了支化增塑PLA。充分阐明了PBSA偶联PLA（PLA - CA - PBSA）及其对应物PBSA共混PLA（PLA/PBSA）的增塑行为。对于PLA - CA - PBSA和PLA/PBSA，均测定到玻璃化转变温度降至室温左右，PLA的断裂伸长率分别从14%提高到165%和460%。PLA/PBSA的结晶度从2.1%提高到8.4%，而PLA - CA - PBSA的结晶度甚至更高，达到10.6%。由于PBSA和PLA之间固有的不良混溶性，共混物中发生了相分离，但PLA - CA - PBSA未出现相分离，这与较高的结晶度一起，使其与纯PLA和PLA/PBSA相比具有更好的氧气阻隔性能。与PLA/PBSA相比，PLA - CA - PBSA在水解降解过程中具有更高的抗迁移性，这表明PBSA在偶联材料中的增塑效果将在更长时间内得以保留。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/90e0/5503035/6fd8c0177630/materials-09-00313-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/90e0/5503035/c14cf21ed769/materials-09-00313-sch001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/90e0/5503035/d0ed0ad43ca0/materials-09-00313-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/90e0/5503035/bcdebb7fda3b/materials-09-00313-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/90e0/5503035/c5271c09b4a4/materials-09-00313-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/90e0/5503035/0c47f2a46e94/materials-09-00313-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/90e0/5503035/92c054bcfe8f/materials-09-00313-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/90e0/5503035/9f83f628298c/materials-09-00313-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/90e0/5503035/679ec15e2258/materials-09-00313-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/90e0/5503035/6fd8c0177630/materials-09-00313-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/90e0/5503035/c14cf21ed769/materials-09-00313-sch001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/90e0/5503035/d0ed0ad43ca0/materials-09-00313-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/90e0/5503035/bcdebb7fda3b/materials-09-00313-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/90e0/5503035/c5271c09b4a4/materials-09-00313-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/90e0/5503035/0c47f2a46e94/materials-09-00313-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/90e0/5503035/92c054bcfe8f/materials-09-00313-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/90e0/5503035/9f83f628298c/materials-09-00313-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/90e0/5503035/679ec15e2258/materials-09-00313-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/90e0/5503035/6fd8c0177630/materials-09-00313-g008.jpg

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