Preparation and Characteristics of the Micro/Nano Fibrils from the Wheat-Straw Treated by Enzyme

Cong Liu; Yang Zhang; Yong Su

doi:10.4028/www.scientific.net/AMM.432.20

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 432Preparation and Characteristics of the Micro/Nano...

Preparation and Characteristics of the Micro/Nano Fibrils from the Wheat-Straw Treated by Enzyme

Abstract:

Single-factor experiment was applied to get the optimum enzyme treatment condition: water bath in the oscillation trough at the frequency of 80 in 50°C with enzyme usage 35 IU/g for 48h. Transmission electron microscope (TEM), laser granularity distributing machine, Fourier transform infrared spectrometer (FTIR) and X-ray diffractor (XRD) were used to analyze the product with enzyme treatment. Observing by TEM, we could see large volume of micro/nanofibrils had gathered together, while fibre was 100-300 nm long and far less than 100nm radial, meeting the requirement of micro/nanofibrils. Being analyzed with laser granularity distributing machine, part of the product had reached the micro/nanolevel. Analyzing by FTIR, we can conclude that after enzyme treatment and ultrasonic dispersion cellulose had no change in functional groups. From the crystallinity atlas, we find the crystallinity of wheat-straw micro/nanofibrils improved from 65.55% to 72.99%, showing that cellulose enzyme destroyed the non-crystallizing field effectively

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Periodical:

Applied Mechanics and Materials (Volume 432)

Pages:

20-24

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.432.20

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Online since:

September 2013

Authors:

Cong Liu, Yang Zhang, Yong Su

Keywords:

Enzyme Treatment, Micro/Nanofibrils, Wheat-Straw

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