Biocomposite Films of Polylactic Acid Reinforced with Microcrystalline Cellulose from Pineapple Leaf Fibers

作     者：Galia Moreno Karla Ramirez Marianelly Esquivel Guillermo Jimenez 

作者机构：Laboratory of Polymers(POLIUNA)School of ChemistryUniversidad NacionalHerediaCosta Rica 

出 版 物：《Journal of Renewable Materials》 (可再生材料杂志（英文）)

年 卷 期：2019年第7卷第1期

页      面：9-20页

核心收录：

学科分类：0830[工学-环境科学与工程（可授工学、理学、农学学位）] 08[工学] 0706[理学-大气科学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：Costa Rican Council of Science and Technology Costa Rican Ministry of Science, Technology and Telecommunications Ministerio de Ciencia Tecnología y Telecomunicaciones, MICITT Consejo Nacional para Investigaciones Científicas y Tecnológicas, CONICIT 

主　　题：Cellulose composites microcrystalline PLA pineapple 

摘      要：Poly(lactic acid)(PLA)composite films reinforced with microcrystalline cellulose(MCC)extracted from pineapple leaf fibers(PALF)were prepared by a solution casting *** an attempt to improve the interaction between PLA and cellulose,two approaches were adopted;first,poly(ethylene glycol)(PEG)was used as a surfactant,and second,the cellulosic fibers were pre-treated using tert-butanol(TBA).Lignocellulosic and cellulosic substrates were characterized using Fourier transform infrared(FTIR),wide-angle X-ray scattering(WAXS),and thermogravimetrical analysis(TGA).MCC from PALF showed good thermal stability,left few residues after decomposing,and exhibited high crystallinity ***,thermal and thermomechanical properties of the PLA composites were also *** PLA endotherms were observed in composites with TBA-treated MCC due to crystal nucleation *** ultimate tensile strain values for all composites were lower than that of the pristine ***,4 wt.%MCC content provided balanced engineering properties in terms of static and dynamic tensile properties.