Reinforcing potential of micro- and nano-sized fibers in the starch-based biocomposites

Starch-based biocomposites reinforced with jute (micro-sized fiber) and bacterial cellulose (BC) (nano-sized fiber) were prepared by film casting. Reinforcement in the composites is essentially influenced by fiber nature, and amount of loading. The optimum amount of fiber loading for jute and bacter...

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Main Authors: Soykeabkaew N., Laosat N., Ngaokla A., Yodsuwan N., Tunkasiri T.
Format: Article
Language:English
Published: 2014
Online Access:http://www.scopus.com/inward/record.url?eid=2-s2.0-84858795999&partnerID=40&md5=0c647234a222d68f0a8c2412e3f4fffe
http://cmuir.cmu.ac.th/handle/6653943832/6810
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Institution: Chiang Mai University
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spelling th-cmuir.6653943832-68102014-08-30T03:51:16Z Reinforcing potential of micro- and nano-sized fibers in the starch-based biocomposites Soykeabkaew N. Laosat N. Ngaokla A. Yodsuwan N. Tunkasiri T. Starch-based biocomposites reinforced with jute (micro-sized fiber) and bacterial cellulose (BC) (nano-sized fiber) were prepared by film casting. Reinforcement in the composites is essentially influenced by fiber nature, and amount of loading. The optimum amount of fiber loading for jute and bacterial cellulose in each composite system are 60. wt% and 50. wt% (of starch weight), respectively. Mechanical properties are largely improved due to the strong hydrogen interaction between the starch matrix and cellulose fiber together with good fiber dispersion and impregnation in these composites revealed by SEM. The composites reinforced with 40. wt% or higher bacterial cellulose contents have markedly superior mechanical properties than those reinforced with jute. Young's modulus and tensile strength of the optimum 50. wt% bacterial cellulose reinforced composite averaged 2.6. GPa and 58. MPa, respectively. These values are 106-fold and 20-fold more than the pure starch/glycerol film. DMTA revealed that the presence of bacterial cellulose (with optimum loading) significantly enhanced the storage modulus and glass transition temperature of the composite, with a 35. °C increment. Thermal degradation of the bacterial cellulose component occurred at higher temperatures implying improved thermal stability. The composites reinforced with bacterial cellulose also had much better water resistance than those associated with jute. In addition, even at high fiber loading, the composites reinforced by bacterial cellulose clearly retain an exceptional level of optical transparency owing to the effect of the nano-sized fibers and also good interfacial bonding between the matrix and bacterial cellulose. © 2012 Elsevier Ltd. 2014-08-30T03:51:16Z 2014-08-30T03:51:16Z 2012 Article 2663538 10.1016/j.compscitech.2012.02.015 CSTCE http://www.scopus.com/inward/record.url?eid=2-s2.0-84858795999&partnerID=40&md5=0c647234a222d68f0a8c2412e3f4fffe http://cmuir.cmu.ac.th/handle/6653943832/6810 English
institution Chiang Mai University
building Chiang Mai University Library
country Thailand
collection CMU Intellectual Repository
language English
description Starch-based biocomposites reinforced with jute (micro-sized fiber) and bacterial cellulose (BC) (nano-sized fiber) were prepared by film casting. Reinforcement in the composites is essentially influenced by fiber nature, and amount of loading. The optimum amount of fiber loading for jute and bacterial cellulose in each composite system are 60. wt% and 50. wt% (of starch weight), respectively. Mechanical properties are largely improved due to the strong hydrogen interaction between the starch matrix and cellulose fiber together with good fiber dispersion and impregnation in these composites revealed by SEM. The composites reinforced with 40. wt% or higher bacterial cellulose contents have markedly superior mechanical properties than those reinforced with jute. Young's modulus and tensile strength of the optimum 50. wt% bacterial cellulose reinforced composite averaged 2.6. GPa and 58. MPa, respectively. These values are 106-fold and 20-fold more than the pure starch/glycerol film. DMTA revealed that the presence of bacterial cellulose (with optimum loading) significantly enhanced the storage modulus and glass transition temperature of the composite, with a 35. °C increment. Thermal degradation of the bacterial cellulose component occurred at higher temperatures implying improved thermal stability. The composites reinforced with bacterial cellulose also had much better water resistance than those associated with jute. In addition, even at high fiber loading, the composites reinforced by bacterial cellulose clearly retain an exceptional level of optical transparency owing to the effect of the nano-sized fibers and also good interfacial bonding between the matrix and bacterial cellulose. © 2012 Elsevier Ltd.
format Article
author Soykeabkaew N.
Laosat N.
Ngaokla A.
Yodsuwan N.
Tunkasiri T.
spellingShingle Soykeabkaew N.
Laosat N.
Ngaokla A.
Yodsuwan N.
Tunkasiri T.
Reinforcing potential of micro- and nano-sized fibers in the starch-based biocomposites
author_facet Soykeabkaew N.
Laosat N.
Ngaokla A.
Yodsuwan N.
Tunkasiri T.
author_sort Soykeabkaew N.
title Reinforcing potential of micro- and nano-sized fibers in the starch-based biocomposites
title_short Reinforcing potential of micro- and nano-sized fibers in the starch-based biocomposites
title_full Reinforcing potential of micro- and nano-sized fibers in the starch-based biocomposites
title_fullStr Reinforcing potential of micro- and nano-sized fibers in the starch-based biocomposites
title_full_unstemmed Reinforcing potential of micro- and nano-sized fibers in the starch-based biocomposites
title_sort reinforcing potential of micro- and nano-sized fibers in the starch-based biocomposites
publishDate 2014
url http://www.scopus.com/inward/record.url?eid=2-s2.0-84858795999&partnerID=40&md5=0c647234a222d68f0a8c2412e3f4fffe
http://cmuir.cmu.ac.th/handle/6653943832/6810
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