Processing and Characterization of Cellulose Nanocrystals/Polylactic Acid Nanocomposite Films

Materials

Erin M. Sullivan¹  Robert J. Moon¹  Kyriaki Kalaitzidou¹ 

[1] School of Materials Science and Engineering, Georgia Institute of Technology, 771 Ferst Drive N.W., Atlanta, GA 30332, USA;

关键词: cellulose nanocrystals;    polylactic acid;    nanocomposite film;   

DOI  :  10.3390/ma8125447

来源: mdpi

【 摘 要 】

The focus of this study is to examine the effect of cellulose nanocrystals (CNC) on the properties of polylactic acid (PLA) films. The films are fabricated via melt compounding and melt fiber spinning followed by compression molding. Film fracture morphology, thermal properties, crystallization behavior, thermo-mechanical behavior, and mechanical behavior were determined as a function of CNC content using scanning electron microscopy, differential scanning calorimetry, X-ray diffraction, dynamic mechanical analysis, and tensile testing. Film crystallinity increases with increasing CNC content indicating CNC act as nucleating agents, promoting crystallization. Furthermore, the addition of CNC increased the film storage modulus and slightly broadened the glass transition region.

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland.