PBAT/PLA/cellulose nanocrystals biocomposites compatibilized with polyethylene grafted maleic anhydride (PE-g-MA),Journal of Applied Polymer Science

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PBAT/PLA/cellulose nanocrystals biocomposites compatibilized with polyethylene grafted maleic anhydride (PE-g-MA)
Journal of Applied Polymer Science ( IF 2.7 ) Pub Date : 2021-07-07 , DOI: 10.1002/app.51342
Fabio Caixeta Nunes ₁ , Kairin Cristine Ribeiro ₁ , Fabio André Martini ₁ , Breno Rocha Barrioni ₂ , João Paulo Ferreira Santos ₂ , Benjamim Carvalho ₁

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The use of biodegradable polymers has grown exponentially due to their lower environmental impact when compared to conventional polymers. In this sense, biocomposites are an alternative due to their promising properties, maintaining biodegradability. For this purpose, in the present study, a biodegradable biocomposite of PBAT (poly [butylene adipate co-terephthalate]) and PLA (polylactide) blend containing cellulose nanocrystals (CNC) were obtained, using polyethylene grafted with maleic anhydride (PE-g-MA) as a coupling agent. Seven formulations were produced by extrusion and had their structure, morphology, thermal, and rheological properties analyzed. The results showed a significant improvement of adhesion among the components using PE-g-MA as a coupling agent. Moreover, CNC and PE-g-MA increased the PLA crystallinity degree and reduced the complex viscosity. These results are unprecedented in the literature using these compositions and extrusion processing conditions. Therefore, these new insights provide a vast horizon for the use of biodegradable mixtures using PBAT/PLA and CNC.

中文翻译：

与聚乙烯接枝马来酸酐 (PE-g-MA) 相容的 PBAT/PLA/纤维素纳米晶体生物复合材料

由于与传统聚合物相比，可生物降解聚合物对环境的影响较小，因此其使用呈指数增长。从这个意义上说，生物复合材料是一种替代品，因为它们具有良好的特性，可保持生物降解性。为此，在本研究中，使用接枝马来酸酐的聚乙烯 (PE-g- MA) 作为偶联剂。通过挤出生产了七种配方，并对它们的结构、形态、热和流变特性进行了分析。结果表明，使用 PE-g-MA 作为偶联剂的组件之间的粘附性显着提高。而且，CNC和PE-g-MA提高了PLA的结晶度，降低了复数粘度。这些结果在使用这些组合物和挤出加工条件的文献中是前所未有的。因此，这些新见解为使用 PBAT/PLA 和 CNC 的可生物降解混合物的使用提供了广阔的视野。

更新日期：2021-08-25

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