Highly transparent and impact-resistant PMMA nanocomposites reinforced by cellulose nanofibers of pineapple leaves modified by eco-friendly methods

eXPRESS Polymer Letters

Y. F. Shih¹ 

关键词: nanocomposites;    cellulose nanofibers;    pineapple leaves;    transparent;   

DOI  :  10.3144/expresspolymlett.2018.72

学科分类：生物科学（综合）

来源: eXPRESS Polymer Letters

【 摘 要 】

In this study, cellulose nanofibers (CNFs) were derived from waste pineapple leaves with the aim of developinga nanocomposite with high impact strength and transparency. First, CNFs were prepared using an acid-base treatment and2,2,6,6-tetramethylpiperidin-1-oxyl radical (TEMPO)-mediated oxidation, and then, the surface was modified with polymerizedmethyl methacrylate (MMA) using an eco-friendly method in an aqueous system. The MMA-modified CNF hadan increased contact angle from 12.02 to 57.45°, and the surface hydrophobicity improved the interfacial compatibility betweenthe CNF and polymethyl methacrylate (PMMA) matrix. At 1–3 wt% of the modified CNF, the impact strength of thenanocomposites was significantly improved by 2.7–22.9%. Moreover, this eco-friendly modification allowed CNFs to dispersehomogeneously in the nanocomposite for excellent light transmittance. In conclusion, this eco-friendly modificationcan replace conventional solvent-based modification, allowing modified CNF to effectively reinforce the PMMA nanocomposite.

【 授权许可】

CC BY