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Open AccessArticle

Synergistic Effect of Cellulose Nanofiber and Nanoclay as Distributed Phase in a Polypropylene Based Nanocomposite System

1
Korea Packaging Center, Korea Institute of Industrial Technology, Bucheon 14449, Korea
2
Department of Chemical and Biological Engineering, Korea University, Seoul 02841, Korea
*
Author to whom correspondence should be addressed.
Polymers 2020, 12(10), 2399; https://doi.org/10.3390/polym12102399
Received: 9 September 2020 / Revised: 6 October 2020 / Accepted: 16 October 2020 / Published: 18 October 2020
(This article belongs to the Section Polymer Composites and Nanocomposites)
Since the plastic-based multilayer films applied to food packaging are not recyclable, it is necessary to develop easily recyclable single materials. Herein, polypropylene (PP)-based cellulose nanofiber (CNF)/nanoclay nanocomposites were prepared by melt-mixing using a fixed CNF content of 1 wt %, while the nanoclay content varied from 1 to 5 wt %. The optimum nanoclay content in the PP matrix was found to be 3 wt % (PCN3), while they exhibited synergistic effects as a nucleating agent. PCN3 exhibited the best mechanical properties, and the tensile and flexural moduli were improved by 51% and 26%, respectively, compared to PP. In addition, the oxygen permeability was reduced by 28%, while maintaining the excellent water vapor permeability of PP. The improvement in the mechanical and barrier properties of PP through the production of PP/CNF/nanoclay hybrid nanocomposites suggested their possible application in the field of food packaging. View Full-Text
Keywords: nanocomposites; hybrid; polymer-matrix composites (PCM); physical properties nanocomposites; hybrid; polymer-matrix composites (PCM); physical properties
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MDPI and ACS Style

Jung, B.N.; Jung, H.W.; Kang, D.; Kim, G.H.; Shim, J.K. Synergistic Effect of Cellulose Nanofiber and Nanoclay as Distributed Phase in a Polypropylene Based Nanocomposite System. Polymers 2020, 12, 2399.

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