caa a22 4500 445385138 CHVBK 20180317143030.0 cr unu---uuuuu 170323e20111201xx s 000 0 eng 10.1007/s10924-011-0338-9 doi (NATIONALLICENCE)springer-10.1007/s10924-011-0338-9 Aging of Toughened Polylactic Acid Nanocomposites: Water Absorption, Hygrothermal Degradation and Soil Burial Analysis [Elektronische Daten] [Harintharavimal Balakrishnan, Azman Hassan, Muhammad Imran, Mat Wahit] The environmental aging behaviour of montmorillonite (MMT) filled polylactic acid (PLA) nanocomposites (PLA/MMT) and linear low density polyethylene (LLDPE)-toughened PLA (PLA/LLDPE ratio=90/10) nanocomposites (PLA/LLDPE/MMT) were investigated in this study. The nanocomposites were subjected to water absorption, hygrothermal degradation and soil burial analysis. Both PLA/MMT and PLA/LLDPE/MMT nanocomposites were immersed in distilled water at three different temperatures (room temperature, 60, and 90°C) and the weight difference before and after immersion was calculated. The kinetics of water absorption for both nanocomposites followed the Fick's second law of diffusion, where a linear relationship exists between the initial moisture absorption at any time t and t 1/2 (the square root of time), followed by a horizontal plateau (saturation). The equilibrium moisture content (M m ) and diffusion coefficient (D) of PLA nanocomposites increased with the addition of MMT (2 phr) and LLDPE. However, the D values of both nanocomposites decreased by increasing MMT (4 phr). The M m for PLA/MMT and PLA/LLDPE/MMT nanocomposites increased by increasing immersion temperature (60°C) and prolonged immersion resulted in hygrothermal degradation of both nanocomposites. The hygrothermal degradation studies showed that PLA degrades much faster at 90°C as compared to 60°C in both the nanocomposites. The addition of MMT and LLDPE improved the hygrothermal stability of PLA in both nanocomposites. Soil burial test revealed deterioration of impact strength in all samples while the rate of biodegradation was retarded in the presence of MMT and LLDPE. Springer Science+Business Media, LLC, 2011 Polylactic acid nationallicence Montmorillonite nationallicence Nanocomposites nationallicence Aging nationallicence Biodegradation nationallicence Balakrishnan Harintharavimal Enhanced Polymer Research Group, Department of Polymer Engineering, Faculty of Chemical Resource Engineering, Universiti Teknologi Malaysia (UTM), 81310, Skudai, Johor, Malaysia aut Hassan Azman Enhanced Polymer Research Group, Department of Polymer Engineering, Faculty of Chemical Resource Engineering, Universiti Teknologi Malaysia (UTM), 81310, Skudai, Johor, Malaysia aut Imran Muhammad Enhanced Polymer Research Group, Department of Polymer Engineering, Faculty of Chemical Resource Engineering, Universiti Teknologi Malaysia (UTM), 81310, Skudai, Johor, Malaysia aut Wahit Mat Enhanced Polymer Research Group, Department of Polymer Engineering, Faculty of Chemical Resource Engineering, Universiti Teknologi Malaysia (UTM), 81310, Skudai, Johor, Malaysia aut Journal of Polymers and the Environment Springer US; http://www.springer-ny.com 19/4(2011-12-01), 863-875 1566-2543 19:4<863 2011 19 10924 https://doi.org/10.1007/s10924-011-0338-9 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10924-011-0338-9 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Balakrishnan Harintharavimal Enhanced Polymer Research Group, Department of Polymer Engineering, Faculty of Chemical Resource Engineering, Universiti Teknologi Malaysia (UTM), 81310, Skudai, Johor, Malaysia aut NATIONALLICENCE 700 1- Hassan Azman Enhanced Polymer Research Group, Department of Polymer Engineering, Faculty of Chemical Resource Engineering, Universiti Teknologi Malaysia (UTM), 81310, Skudai, Johor, Malaysia aut NATIONALLICENCE 700 1- Imran Muhammad Enhanced Polymer Research Group, Department of Polymer Engineering, Faculty of Chemical Resource Engineering, Universiti Teknologi Malaysia (UTM), 81310, Skudai, Johor, Malaysia aut NATIONALLICENCE 700 1- Wahit Mat Enhanced Polymer Research Group, Department of Polymer Engineering, Faculty of Chemical Resource Engineering, Universiti Teknologi Malaysia (UTM), 81310, Skudai, Johor, Malaysia aut NATIONALLICENCE 773 0- Journal of Polymers and the Environment Springer US; http://www.springer-ny.com 19/4(2011-12-01), 863-875 1566-2543 19:4<863 2011 19 10924 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer