Abstract
Bioplastic based on tapioca starch (TSB) is very sensitive on moisture; meanwhile this substance may be used to replace synthetic plastic. This paper reports effect of Water Hyacinth Fibers (WHF) content on performance moisture absorption of starch based biocomposites. WHF content in the TSB matrix was varied in 1, 3, 5, and 10% respectively. The samples were placed in closed room with high relative humidity (RH) of 99% at 250C with different duration for 30 and 960 min respectively. The result showed that moisture absorption in the beginning was increased rapidly, and then achieved a level steady state. After that, significant swelling of the sample occurred for further duration in 960 min. Gradient of the swelling was decreased as increasing the fibers content in the TSB matrix.
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