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RISS 인기검색어
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- 저자 : Nor Amira Othman (검색결과 1 건)
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Evaluation of Reinforced and Green Bioplastic from Carrageenan Seaweed with Nanocellulose
Fatmawati Adam,Nor Amira Othman,Nur Hidayah Mat Yasin,Chin Kui Cheng,Nurul Aini Mohd Azman 한국섬유공학회 2022 Fibers and polymers Vol.23 No.10
In this work, bioplastic was formulated through the incorporation of cellulose into refined carrageenan. Threedifferent sizes of cellulose were used microcrystalline cellulose (MCC), cellulose nanowhisker (CNW) and nanofibrillatedcellulose (NFC). The CNW was mechanically nano-grinded and NFC was ultrasonicated to produce nano particle for MCC. The CNW has the smallest particle size distribution and an average size of 54 nm. The abundance of hydroxyl groups in thecellulose structure forms intermolecular interactions with the carrageenan and increases the viscosity (293.90 mPas), shearstress (27.90 Pa) and tensile strength (19.87 MPa) of Carra-CNW bioplastic. This revealed increasing intensity and a shift of1H-NMR due to hydrogen becoming closer to an electronegative atom in both micro and nano size cellulose. At a largercellulose size, Carra-MCC is thermally stable and the activation energy (Ea) is 73.81 kJ/mol higher than Carra-CNW Ea at47.14 kJ/mol. Cellulose incorporated into a carrageenan matrix is a potential eco-material that could replace conventionalplastic where the sample decomposes up to 65 % of the initial weight in biodegradability and compostability test. The watervapour permeability value is in the range of 3.43 to 4.09×10-14 g s-1 m-1 Pa-1. In conclusion, carrageenan incorporated withcellulose potentially suitable for uses such as food packaging applications based on the results of the mechanical strength,thermal stability and decomposition tests conducted.
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