4.7 Article

Preparation and properties of sisal microfibril/gelatin biomass composites

出版社

ELSEVIER SCI LTD
DOI: 10.1016/j.compositesa.2011.08.024

关键词

Fibers; Polymer-matrix composites (PMCs); Physical properties

资金

  1. National Natural Science Foundation of China [20604026]
  2. Henan Scientific & Technological Department [092300410130]

向作者/读者索取更多资源

In this work, the natural sisal fibers were fibrillated by enzyme hydrolysis or mechanical disintegration into microfibrils with a width of 5-10 mu m and different aspect ratios. The sisal microfibrils or microfibril mats were added into the gelatin to prepare biomass composites, by solvent-casting or solution impregnation techniques, respectively. The morphology, mechanical properties, biodegradation property, and water adsorption behaviors of the composites were investigated. It was found that the tensile strength of the composites was dramatically increased with the addition of sisal microfibrils. The degradation ratio of the composites decreased continuously with increasing the sisal fibril content. The addition of sisal microfibrils decreased the water uptake at equilibrium and the water diffusion coefficient. Scanning electron microscopy characterization showed that the sisal microfibrils were very well embedded in the gelatin matrix, showing a good interfacial adhesion. (C) 2011 Elsevier Ltd. All rights reserved.

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