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创新型聚乳酸共混物：探索衣康酸不同化学结构的影响。

Innovative Poly(lactic Acid) Blends: Exploring the Impact of the Diverse Chemical Architectures from Itaconic Acid.

作者信息

Carrasco-Fernández Miriam, López-Martínez Erika Ivonne, Flores-Gallardo Sergio Gabriel, Estrada-Moreno Iván Alziri, Mendoza-Duarte Mónica Elvira, Vega-Rios Alejandro

机构信息

Centro de Investigación en Materiales Avanzados, SC (CIMAV), Av. Miguel de Cervantes #120, Chihuahua 31136, Chih., Mexico.

出版信息

Polymers (Basel). 2024 Sep 30;16(19):2780. doi: 10.3390/polym16192780.

DOI:10.3390/polym16192780
PMID:39408489
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11478570/
Abstract

Environment-friendly polymer blends of poly(lactic acid) (PLA) and itaconic acid (IA), poly(itaconic acid) (PIA), poly(itaconic acid)--poly(methyl itaconate) (Cop-IA), and poly(itaconic acid)--triethylene glycol dimethacrylate (Net-IA) were performed via melt blending. The compositions studied were 0.1, 1, 3, and 10 wt% of the diverse chemical architectures. The research aims to study and understand the effect of IA and its different architectures on the mechanical, rheological, and thermal properties of PLA. The PLA/IA, PLA/PIA, PLA/Cop-IA, and PLA/Net-IA blends were characterized by dynamic mechanical thermal analysis, rotational rheometer (RR), thermogravimetric analysis, differential scanning calorimetry, X-ray diffraction, and scanning electron microscopy. The complex viscosity, storage module, and loss module for the RR properties were observed in the following order: PLA/Cop-IA, PLA/Net-IA, and PLA/PIA > PLA > PLA/IA. Thermal stability improved with increasing concentrations of Cop-IA and Net-IA. In the same way, the mechanical properties were enhanced. In addition, the micrographs illustrated the formation of fibrillar structures for all blends. The crystallinity degree displayed higher values for the blends that contain Net-IA > Cop-IA than IA > PIA. Therefore, IA and its architectures can influence these studied properties, which have potential applications in disposable food packing.

摘要

通过熔融共混制备了聚乳酸（PLA）与衣康酸（IA）、聚衣康酸（PIA）、聚衣康酸-聚甲基衣康酸酯（Cop-IA）以及聚衣康酸-三乙二醇二甲基丙烯酸酯（Net-IA）的环保型聚合物共混物。所研究的组合物中不同化学结构的含量分别为0.1、1、3和10 wt%。该研究旨在探究并理解IA及其不同结构对PLA的力学、流变学和热性能的影响。通过动态力学热分析、旋转流变仪（RR）、热重分析、差示扫描量热法、X射线衍射和扫描电子显微镜对PLA/IA、PLA/PIA、PLA/Cop-IA和PLA/Net-IA共混物进行了表征。RR性能的复数粘度、储能模量和损耗模量按以下顺序排列：PLA/Cop-IA、PLA/Net-IA和PLA/PIA > PLA > PLA/IA。热稳定性随着Cop-IA和Net-IA浓度的增加而提高。同样，力学性能也得到了增强。此外，显微照片显示所有共混物均形成了纤维状结构。含有Net-IA的共混物的结晶度值高于含有Cop-IA的共混物，高于含有IA的共混物，高于含有PIA的共混物。因此，IA及其结构会影响这些所研究的性能，其在一次性食品包装中具有潜在应用。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/deaf/11478570/8194bdfd9d73/polymers-16-02780-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/deaf/11478570/897a33548ae0/polymers-16-02780-sch001.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/deaf/11478570/dca1d8671762/polymers-16-02780-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/deaf/11478570/8194bdfd9d73/polymers-16-02780-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/deaf/11478570/897a33548ae0/polymers-16-02780-sch001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/deaf/11478570/fad5033597b5/polymers-16-02780-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/deaf/11478570/403e4d286932/polymers-16-02780-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/deaf/11478570/7e421d868ddd/polymers-16-02780-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/deaf/11478570/436a553e8d9d/polymers-16-02780-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/deaf/11478570/818230c288fe/polymers-16-02780-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/deaf/11478570/c4ef5667d10d/polymers-16-02780-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/deaf/11478570/6775c3ca3a77/polymers-16-02780-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/deaf/11478570/dca1d8671762/polymers-16-02780-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/deaf/11478570/8194bdfd9d73/polymers-16-02780-g009.jpg

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