โฟมไฮบริดคอมพอสิตชีวภาพที่มีแป้งเป็นฐานเติมด้วยกากมันสำปะหลังและใยฝ้ายดิบที่ไฮโดรไลซ์ด้วยกรด

Abstract

In this study, the preparation of environmentally friendly and biodegradable starch-based bio- hybrid composite foam was studied. Effects of the addition of natural additives, cassava wastes from cassava starch production process and acid hydrolyzed raw cotton linters, were investigated. The biodegradable starch-based bio-hybrid composite foam were formed by baking process in a hot mold at 180 °C Then, the properties of biodegradable starch-based bio-hybrid composite foam were examined, including morphology, wettability, moisture uptake, solubility, swelling, bulk density, thermal properties, mechanical properties, and biodegradability. The results showed that starch-based bio-composite foam had closed-cell structure. The addition of cassava wastes resulted in the decrease of wettability, solubility and swelling. While thermal stability and flexural strength were found to be increased. In addition, it was found that starch-based bio-composite foam with 15% of cassava wastes had optimal properties. For the effect of acid hydrolyzed raw cotton linters, it was observed that wettability, solubility and swelling of starch-based bio-hybrid composite foam filled with acid hydrolyzed raw cotton linters decreased. In contrast, the addition of acid hydrolyzed raw cotton linters resulted in the increase of thermal stability and flexural strength of the starch-based bio-hybrid composite foam. Moreover, the addition of acid hydrolyzed raw cotton linters higher than 15% revealed the decreased in flexural strength of the starch-based bio-hybrid composite foam.