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International Journal of Polymer Science
Volume 2017, Article ID 4512378, 9 pages
https://doi.org/10.1155/2017/4512378
Research Article

Effect of Nano-CaCO3 and Talc on Property and Weathering Performance of PP Composites

1Department of Forest Products and Biotechnology, College of Science and Technology, Kookmin University, Seoul 02707, Republic of Korea
2Department of Wood Processing, Korea Forest Research Institute, Seoul 02455, Republic of Korea
3School of Renewable Natural Resources, Louisiana State University AgCenter, Baton Rouge, LA 70803, USA

Correspondence should be addressed to Birm-June Kim; rk.ca.nimkook@3mikjb

Received 20 January 2017; Revised 29 March 2017; Accepted 11 April 2017; Published 22 May 2017

Academic Editor: Sumin Kim

Copyright © 2017 Danbee Lee et al. 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.

Abstract

Wood plastic composites (WPCs) are increasingly being utilized these days due to their excellent mechanical properties and low maintenance cost. Despite these advantages, poor UV resistance and low impact strength are drawbacks. To overcome these shortcomings, coextrusion technology has recently been applied in the production of WPCs and it has been showing good results. However, further research on the combination of different functional enhancements is still needed. This study, therefore, manufactured polypropylene (PP) composites filled with UV stabilizer and inorganic fillers (i.e., nano-CaCO3 and talc) and then investigated the influence of weathering on the mechanical and morphological properties of the filled composites as a function of filler type and content. UV stabilizer effectively protected the filled composites from UV-induced photodegradation. At 2.5 wt% nano-CaCO3 (NCC), the NCC particles were well dispersed in the PP matrix, thereby improving the mechanical properties of the filled composites. The best results were observed in 2.5 wt% NCC and 10 wt% talc hybrid filled composites. The composites prepared by adding UV stabilizer to the PP matrix together with NCC and talc exhibited high mechanical properties and improved weathering resistance, and, thus, the combination of NCC, talc, and UV stabilizer in the PP matrix is applicable for shell layer to be used in coextruded WPCs.