Preparation and characterization of starch-based composite films reinforced by cellulose nanofibers.

作者: Mahyar Fazeli , Meysam Keley , Esmaeil Biazar

DOI: 10.1016/J.IJBIOMAC.2018.04.186

关键词: Scanning electron microscopeCelluloseComposite numberTensile testingBiocompositeUltimate tensile strengthNanofiberNanocompositeComposite materialMaterials science

摘要: The current study deals with the preparation and characterization of polysaccharide-based biocomposite films acquired by incorporation cellulose nanofiber within glycerol plasticized matrix formed starch. application starch-based is limited due to highly hydrophilic nature poor mechanical properties. These problems are solved forming a nanocomposite thermoplastic starch (TPS) as (CNF) reinforcement. CNF successfully prepared from short henequen fibers which consist almost 60% chemo-mechanical process. TPS/CNF composite polymer solution casting method, their characterizations obtained water vapor transmission rate (WVTR), atomic force microscopy (AFM), oxygen (OTR), X-ray diffraction, light transmittance tensile test. 0.4 wt% loaded TPS showed approximately maximum improvement in strength. Tensile strength elastic modulus increased up 80% 170% respectively. Above 0.5 wt% CNF, starts deteriorate. WVTR OTR results show barrier properties matrix. AFM analysis shows topography surface nanocomposite. morphology nanofibers studied using scanning electron (SEM) (TEM).

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