Abstract
Cellulose microfibril (CMF) was the extraction with acid mixture from peel of Musa sapientum Linn type of banana (Kluai Nam Wa). The fibrous-shape of CMF interconnected weblike structure with the average diameter 26 nm were observed by TEM. In order to prepare zein/CMF nanocomposite films, 16% wt zein solution was prepared by dissolved in 80% ethanol aqueous solution which contain glycerol 20% w/w. The suspension of CMF and zein solution was mixed with 0% - 5% weight fractions of solid CMF in zein matrix. The morphology of the zein films is more roughness by increased amount of cellulose microfibrils. It was found that as CMF content increase from 0 to 5% wt results in increasing tensile strength and Young’s modulus of zein nanocomposite films. The highest strength obtains at 4% wt CMF.
Highlights
Natural fibers are subdivided based on their origins, coming from plants, animals or minerals
Glycerol was added into the zein solution in order to improve zein films flexibility
It was found that surface morphology of pure zein film was smooth but fine pores were observed for zein film with 20% glycerol
Summary
Natural fibers are subdivided based on their origins, coming from plants, animals or minerals. The main advantages of lignocellulosics are renewable nature, wide variety of fillers available throughhout the world, low energy consumption, low cost, low density, high specific strength and modulus (desirable fiber aspect ratio), high sound attenuation, and comparatively easy processability due to their flexibility and nonabrasive nature which allow high filling levels. Despite these attractive properties, lignocellulosic fillers are used only to a limited extent in industrial practices, mainly due to difficulties associated with surface interactions. MANIAW ture, thermal and mechanical properties of composite films were investigated and reported here
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