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绿色杂化纳米纤维状聚合物-聚合物复合材料的原位生成——一种制备三重形状记忆聚合物的新方法。

In Situ Generation of Green Hybrid Nanofibrillar Polymer-Polymer Composites-A Novel Approach to the Triple Shape Memory Polymer Formation.

作者信息

Hosseinnezhad Ramin, Vozniak Iurii, Zaïri Fahmi

机构信息

Centre of Molecular and Macromolecular Studies Polish Academy of Sciences, 90-363 Lodz, Poland.

Univ. Lille, IMT Lille Douai, Univ. Artois, JUNIA, ULR 4515-LGCgE, Laboratoire de Génie Civil et géo-Environnement, F-59000 Lille, France.

出版信息

Polymers (Basel). 2021 Jun 8;13(12):1900. doi: 10.3390/polym13121900.

DOI:10.3390/polym13121900
PMID:34201008
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8226873/
Abstract

The paper discusses the possibility of using in situ generated hybrid polymer-polymer nanocomposites as polymeric materials with triple shape memory, which, unlike conventional polymer blends with triple shape memory, are characterized by fully separated phase transition temperatures and strongest bonding between the polymer blends phase interfaces which are critical to the shape fixing and recovery. This was demonstrated using the three-component system polylactide/polybutylene adipateterephthalate/cellulose nanofibers (PLA/PBAT/CNFs). The role of in situ generated PBAT nanofibers and CNFs in the formation of efficient physical crosslinks at PLA-PBAT, PLA-CNF and PBAT-CNF interfaces and the effect of CNFs on the PBAT fibrillation and crystallization processes were elucidated. The in situ generated composites showed drastically higher values of strain recovery ratios, strain fixity ratios, faster recovery rate and better mechanical properties compared to the blend.

摘要

本文讨论了使用原位生成的聚合物-聚合物杂化纳米复合材料作为具有三重形状记忆的聚合物材料的可能性，与具有三重形状记忆的传统聚合物共混物不同，其特征在于具有完全分离的相变温度以及聚合物共混物相界面之间最强的键合，这对于形状固定和恢复至关重要。使用三元体系聚乳酸/聚己二酸丁二醇酯/纤维素纳米纤维（PLA/PBAT/CNFs）对此进行了证明。阐明了原位生成的PBAT纳米纤维和CNFs在PLA-PBAT、PLA-CNF和PBAT-CNF界面处形成有效物理交联中的作用以及CNFs对PBAT原纤化和结晶过程的影响。与共混物相比，原位生成的复合材料显示出明显更高的应变恢复率、应变固定率、更快的恢复速率和更好的机械性能。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5295/8226873/c0a7b9af66d8/polymers-13-01900-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5295/8226873/579aed0f7b94/polymers-13-01900-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5295/8226873/5ebd2b97143a/polymers-13-01900-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5295/8226873/db3729f93908/polymers-13-01900-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5295/8226873/1b94590cb40e/polymers-13-01900-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5295/8226873/c1fd42b18ff7/polymers-13-01900-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5295/8226873/bde3628acb4c/polymers-13-01900-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5295/8226873/c0a7b9af66d8/polymers-13-01900-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5295/8226873/579aed0f7b94/polymers-13-01900-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5295/8226873/5ebd2b97143a/polymers-13-01900-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5295/8226873/db3729f93908/polymers-13-01900-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5295/8226873/1b94590cb40e/polymers-13-01900-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5295/8226873/c1fd42b18ff7/polymers-13-01900-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5295/8226873/bde3628acb4c/polymers-13-01900-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5295/8226873/c0a7b9af66d8/polymers-13-01900-g007.jpg

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