Table of Contents
Conference Papers in Materials Science
Volume 2013, Article ID 171867, 5 pages
http://dx.doi.org/10.1155/2013/171867
Conference Paper

Characterization of Cellulose Microfibrils Obtained from Hemp

1Institute of Textile Materials Technologies and Design, Riga Technical University, Riga 1048, Latvia
2Laboratory of Biomass Eco-Efficient Conversion, Latvian State Institute of Wood Chemistry, Dzerbenes Street 27, Riga 1006, Latvia

Received 4 July 2013; Accepted 2 October 2013

Academic Editors: R. Alagirusamy, R. Fangueiro, H. Hong, and A. T. Marques

This Conference Paper is based on a presentation given by Anna Šutka at “International Conference on Natural Fibers—Sustainable Materials for Advanced Applications 2013” held from 9 June 2013 to 11 June 2013 in Guimarães, Portugal.

Copyright © 2013 Anna Šutka et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Microfibrillated cellulose was extracted from hemp fibres using steam explosion pretreatment and high-intensity ultrasonic treatment (HIUS). The acquired results after steam explosion treatment and water and alkali treatments are discussed and interpreted by Fourier transform infrared spectroscopy (FTIR). Scanning electron microscopy (SEM) was used to examine the microstructure of hemp fibres before and after each treatment. A fibre size analyser was used to analyse the dimensions of the untreated and treated cellulose fibrils. SEM observations show that the sizes of the different treated fibrils have a diameter range of several micrometres, but after HIUS treatment fibres are separate from microfibrils, nanofibres, and their agglomerates.