Díaz de León Ramón, Guzmán Ediberto, López González Ricardo, Díaz Elizondo Alejandro, Magaña Ilse, Neira Guadalupe, Castañeda Facio Adali, Valencia Luis
Research Center for Applied Chemistry, Blvd. Enrique Reyna 140, San José de los Cerritos, Saltillo 25294, CH, Mexico.
Facultad de Ciencias Químicas, Universidad Autónoma de Coahuila, Boulevard V. Carranza S/N, República Oriente, Saltillo 25280, CH, Mexico.
Polymers (Basel). 2021 Aug 13;13(16):2699. doi: 10.3390/polym13162699.
The growing concern for environmental problems has motivated the use of materials obtained from bio-based resources such as cellulose nanocrystals which have a promising application acting as fillers or reinforcements of polymeric materials. In this context, in this article, plasma-induced polymerization is proposed as a strategy to modify nanocrystals at different plasma power intensities using ε-caprolactone and δ-decalactone to improve their compatibility with polymeric matrices. The characterization was carried out using techniques such as FTIR, TGA, XRD, XPS, and AFM, with which a successful functionalization was demonstrated without altering the inherent properties of the nanocrystals. The preparation of ABS nanocomposites was carried out with the modified nanoparticles and the evaluation of the mechanical properties indicates an increase in Young's modulus and yield stress under certain concentrations of modified cellulose nanocrystals.
对环境问题的日益关注促使人们使用从生物基资源中获得的材料，如纤维素纳米晶体，它们作为聚合物材料的填料或增强剂具有广阔的应用前景。在此背景下，本文提出采用等离子体诱导聚合策略，使用ε-己内酯和δ-癸内酯在不同等离子体功率强度下对纳米晶体进行改性，以提高其与聚合物基体的相容性。使用傅里叶变换红外光谱（FTIR）、热重分析（TGA）、X射线衍射（XRD）、X射线光电子能谱（XPS）和原子力显微镜（AFM）等技术进行表征，结果表明成功实现了功能化，且未改变纳米晶体的固有性质。用改性纳米粒子制备了丙烯腈-丁二烯-苯乙烯（ABS）纳米复合材料，对力学性能的评估表明，在一定浓度的改性纤维素纳米晶体下，杨氏模量和屈服应力有所增加。
