1Department of Mechanical and Industrial Engineering, College of Engineering and Technology, University of Dar es Salaam, P.O. Box 35131, Dar es Salaam, Tanzania
2University of Skövde, P.O. Box 408, SE-541 28 Skövde, Sweden
Adv. Mater. Lett., 2016, 7 (11), pp 872-877
DOI: 10.5185/amlett.2016.6087
Publication Date (Web): Oct 01, 2016
Copyright © IAAM-VBRI Press
E-mail:bndazi@udsm.ac.tz
The influence of sorption temperatures and rice hull content on diffusion, permeability and solubility of water into PLA has been investigated by theoretical models with the support of experimental data. As expected and experimentally demonstrated water transport rates was higher at higher temperatures. This agrees with the increase in diffusion (D = 0.67 to 3.45?10-11 m2/s) and permeability (P = 0.33 to 0.55?10-13 m2/s) obtained by Equation (1). In contrast, the decrease in solubility from S = 5.0?10-3 to S = 0.54?10-3 as temperature was increased from 23?C ?70?C confirms the reduction of PLA’s permeable domains during hydrolysis. Change in molecular weight confirms that hydrolysis was reaction controlled. Furthermore, S, D and P decreased with the increase of rice hull in PLA from 0 to 40 %, contrary to experimental results of Figs. 2 and 3. Rice hull was expected to enhance diffusion and permeability of water into PLA on the fact that being hydrophilic, rice hull do not bond perfectly with PLA leading to more permeable products. This leads to the conclusion that the mathematical relations applied need to be modified to account for other factors such as interface properties, type and form of fillers and chemical reaction of the polymer in order to predict reliably water transport behaviour in filled PLA or similar polymers.
Advancements in Materials Technology for Accomplishing Sustainable Development Goals
A Review for Luminescence Property of Materials, Its Detection and Probabilities for Embedding of Luminescence with MEMS Technology
A Review on Low-Cost Adsorbents for Cadmium Pollutant Removal from Industrial Effluents
Study of Applications of Radial Basis Function Network in Forecasting
Progress and Perspectives of Photodetectors Based on 2D Materials
Synthesis and Characterization of Platinum and Platinum based Alloy Nanoparticles Anchored on Various Carbon Materials for Methanol Oxidation in a DMFC – A Short Review
Influence of Processing Induced Morphology on the Performance of PP Injected Intricate Pieces Modified with MWCNT as a Painting Aide
Inhibitive Effect on the Rate of Hydrolysis of Tetracaine by the Surfactant-Coated Magnetic Nanoparticles (Fe3O4)
Multi-Energy System Based on Ocean Thermal Energy Conversion
Synthesis of Nitrogen-doped KTaTeO6 with Enhanced Visible Light Photocatalytic Degradation of Methylene Blue
Structural Evolution and Enhanced Energy Density, Ferroelectric Property Investigation in Gd Substituted NBT – BT Lead Free Ferroelectric Ceramics
Designing of 10 Wt. % Graphite Particulate Hot Forged AA7075 Composites and its Loss Factor Analysis
Positron Annihilation Spectroscopy of Basaltic Rocks from Plio-Qaternary Volcanics, Sana’a-Amran Volcanic Field, Yemen