Isolation and Characterization of Cellulose Whiskers from Kenaf (Hibiscus cannabinus L.) Bast Fibers
Open Access
- 1 January 2013
- journal article
- Published by Scientific Research Publishing, Inc. in Journal of Biomaterials and Nanobiotechnology
- Vol. 04 (01), 37-44
- https://doi.org/10.4236/jbnb.2013.41006
Abstract
Cellulose whiskers were isolated from kenaf (Hibiscus cannabinus L.) bast fibers via sulfuric acid and hydrochloric acid hydrolysis. Raw kenaf bast, NaOH treated, bleached fibers, sulfuric acid whiskers (SAW) and hydrochloric acid whiskers (HClW) morphology, functional groups, crystallinity, and thermal stability were characterized. The TEM images showed that the sulfuric acid and HCl whiskers have average diameters and length range of 3 nm and 100 - 500 nm, respectively. The FTIR study indicated that during the conversion process, most of the hemicellulose and almost all the lignin were removed by the NaOH and subsequent bleaching treatments. The crystallinity of HCl whiskers was found to be higher (84%) than that of sulfuric acid whiskers (72%). Thermogravimetric analysis indicated that HCl whiskers had better thermal stability than the sulfuric acid ones. In addition, a two-stage decomposition behavior was revealed by TGA in the sulfuric acid whiskers because of incorporation of the sulfate group with the cellulose crystals.Keywords
This publication has 34 references indexed in Scilit:
- Characterization of microcrystalline cellulose prepared from lignocellulosic materials. Part II: Physicochemical propertiesCarbohydrate Polymers, 2011
- Cellulose Whiskers versus Microfibrils: Influence of the Nature of the Nanoparticle and its Surface Functionalization on the Thermal and Mechanical Properties of NanocompositesBiomacromolecules, 2008
- Cellulosic Nanowhiskers. Theory and Application of Light Scattering from Polydisperse Spheroids in the Rayleigh−Gans−Debye RegimeBiomacromolecules, 2008
- Preparation and Properties of Biopolymer-Based Nanocomposite Films Using Microcrystalline CellulosePublished by American Chemical Society (ACS) ,2006
- Strategies for Preparation of Cellulose Whiskers from Microcrystalline Cellulose as Reinforcement in NanocompositesPublished by American Chemical Society (ACS) ,2006
- Cellulose: Fascinating Biopolymer and Sustainable Raw MaterialAngewandte Chemie, 2005
- Review of Recent Research into Cellulosic Whiskers, Their Properties and Their Application in Nanocomposite FieldBiomacromolecules, 2005
- Biofibres, biodegradable polymers and biocomposites: An overviewMacromolecular Materials and Engineering, 2000
- Flow properties of microcrystalline cellulose suspension prepared by acid treatment of native celluloseColloids and Surfaces A: Physicochemical and Engineering Aspects, 1998
- An Empirical Method for Estimating the Degree of Crystallinity of Native Cellulose Using the X-Ray DiffractometerTextile Research Journal, 1959