Effect of lignin content in coconut fiber on matrix/fiber adhesion of fish protein-based biocomposite = ผลของปริมาณลิกนินในเส้นใยมะพร้าวต่อการยีดติดระหว่างเส้นใยมะพร้าวและเนื้อหลักในวัสดุเชิงประกอบย่อยสลายได้จากโปรตีนปลา


ชยานิษฐ์ ชัยศรัณพัฒน์


วิทยานิพนธ์. (2010) 93 หน้า



This research aimed to study the effect of lignin removal in natural fiber on fiber/matrix adhesion and functional properties of coconut fiber/fish protein biocomposite. Coconut fiber was treated with an Organosolv method using a mixture of acetic acid/formic acid/water to decrease lignin content in fiber from 43 to 14 Wt%. Young's modulus, tensile strength and elongation at break of delignification coconut fiber decreased significantly compared to untreated fiber. However, mechanical properties of treated fiber with different lignin content were not significantly different. Therefore, plasticized fish protein materials reinforced with 20% treated coconut fibers containing 14, 26 and 37% lignin content were prepared by mixing and compression molding. Physical adhesion of biocomposite was observed by scanning electron microscopy. Chemical adhesion of fiber/matrix was characterized in tems of glass transition temperature (Tg), chemical bonds and mechanical properties using respectively dynamic mechanical thermal analysis, Fourier transform infrared spectrometer and texture analyzer. Kifferent lignin content in studied range had no effect neither on physica nor chemical adhesion of fiber/matrix. No effect of lignin content on mechanical properties and Tg of biocomposite were observed. In addition, there was no change of infrared spectra of biocomposite with different lignin content