Starch-based biocomposite films reinforced with cellulose nanocrystals from garlic stalks
作者： Melissa B. Agustin , Bashir Ahmmad , Enna Richel P. De Leon , Jerico L. Buenaobra , Joel R. Salazar
DOI: 10.1002/PC.22546
关键词: Starch 、 Sonication 、 Ultimate tensile strength 、 Thermal stability 、 Cellulose 、 Acid hydrolysis 、 Materials science 、 Biocomposite 、 Crystallinity 、 Composite material 、 Materials Chemistry 、 General chemistry 、 Polymers and Plastics 、 Ceramics and Composites
摘要: The study was conducted to reinforce starch-based biocomposite films using cellulose nanocrystals (CNCs) from garlic stalks. An average yield of 4.6% by mass based air-dried stalks obtained through alkali delignification, acid hydrolysis and sonication. isolated CNCs are spherical have an diameter 35 nm crystallinity 62%. Fourier transform infrared spectra correspond the structure cellulose, but some absorption bands corresponding hemicelluloses were also noticed. Starch-based with varying amount as reinforcing filler prepared solution casting evaporation method. Scanning electron micrographs showed homogeneous dispersion CNC in starch matrix. Improvement tensile strength modulus at maximum when ratio is 100:5. thermal stability films, on other hand, decreased addition CNC. Finally, CNC-reinforced had lower moisture uptake than nonreinforced films. POLYM. COMPOS., 34:1325– 1332, 2013. V C 2013 Society Plastics Engineers
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