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Materials 2015, 8(12), 8106-8116; doi:10.3390/ma8125447

Processing and Characterization of Cellulose Nanocrystals/Polylactic Acid Nanocomposite Films

1
School of Materials Science and Engineering, Georgia Institute of Technology, 771 Ferst Drive N.W., Atlanta, GA 30332, USA
2
The Forest Products Laboratory, U.S. Forest Service, 1 Gifford Pinchot Drive, Madison, WI 53726, USA
3
George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, 801 Ferst Drive N.W., Atlanta, GA 30332, USA
*
Author to whom correspondence should be addressed.
Academic Editor: Morreale Marco
Received: 30 September 2015 / Revised: 30 October 2015 / Accepted: 23 November 2015 / Published: 1 December 2015
(This article belongs to the Special Issue Green Composites)
View Full-Text   |   Download PDF [2836 KB, uploaded 1 December 2015]   |  

Abstract

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. View Full-Text
Keywords: cellulose nanocrystals; polylactic acid; nanocomposite film cellulose nanocrystals; polylactic acid; nanocomposite film
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Sullivan, E.M.; Moon, R.J.; Kalaitzidou, K. Processing and Characterization of Cellulose Nanocrystals/Polylactic Acid Nanocomposite Films. Materials 2015, 8, 8106-8116.

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