Starch-based nano-biocomposites

Xie, Fengwei; Pollet, Éric; Halley, P. J.; Avérous, Luc

doi:10.1016/j.progpolymsci.2013.05.002

Cited by 490 publications

(240 citation statements)

References 299 publications

(683 reference statements)

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“…Starch has great potentials in a diversity of applications, with some new applications in foods (resistant starch, microporous starch, etc.) [4][5], pharmaceutical materials (drug delivery systems) [6][7][8], and biodegradable plastics (starch-based materials) [9][10][11]. A clear understanding of starch structures and how its structures change under different treatments is indispensable for the utilization of starch with desired properties.…”

Section: Introductionmentioning

confidence: 99%

Understanding the structural features of high-amylose maize starch through hydrothermal treatment

Yang

Xie

Wen

et al. 2016

International Journal of Biological Macromolecules

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Understanding the structural features of high-amylose maize starch through hydrothermal treatment, International Journal of Biological Macromolecules http://dx.doi.org/10.1016/j.ijbiomac. 2015.12.033 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. Abstract:In this study, high-amylose starches were hydrothermally-treated and the structural changes were monitored with time (up to 12 h) using scanning electron microscopy (SEM), confocal laser scanning microscopy (CLSM), small-angle X-ray scattering (SAXS), X-ray diffraction (XRD), and differential scanning calorimetry (DSC). When high-amylose starches were treated in boiling water, half-shell-like granules were observed by SEM, which could be due to the first hydrolysis of the granule inner region (CLSM). This initial hydrolysis could also immediately (0.5 h) disrupt the semi-crystalline lamellar regularity (SAXS) and dramatically reduce the crystallinity (XRD); but with prolonged time of hydrothermal treatment (≥ 2 h), might allow the perfection or formation of amylose single helices, resulting in slightly increased crystallinity (XRD and DSC). These results show that the inner region of granules is composed of mainly loosely-packed amylopectin growth rings with semi-crystalline lamellae, which are vulnerable under gelatinization or hydrolysis. In contrast, the periphery is demonstrated to be more compact, possibly composed of amylose and amylopectin helices intertwined with amylose molecules, which require greater energy input (higher temperature) for disintegration.

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Section: Introductionmentioning

confidence: 99%

Understanding the structural features of high-amylose maize starch through hydrothermal treatment

Yang

Xie

Wen

et al. 2016

International Journal of Biological Macromolecules

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“…Starch can show a thermoplastic behavior if water, glycerol or sorbitol is added as plasticizer. In spite of its many advantages, starch based materials have severe disadvantages due to poor processability, weak mechanical properties, poor long-term stability and high water sensitivity [5,9].…”

Section: Introductionmentioning

confidence: 99%

All Green Composites from Fully Renewable Biopolymers: Chitosan-Starch Reinforced with Keratin from Feathers

et al. 2014

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Abstract:The performance as reinforcement of a fibrillar protein such as feather keratin fiber over a biopolymeric matrix composed of polysaccharides was evaluated in this paper. Three different kinds of keratin reinforcement were used: short and long biofibers and rachis particles. These were added separately at 5, 10, 15 and 20 wt% to the chitosan-starch matrix and the composites were processed by a casting/solvent evaporation method. The morphological characteristics, mechanical and thermal properties of the matrix and composites were studied by scanning electron microscopy, thermogravimetric analysis, differential scanning calorimetry and dynamic mechanical analysis. The thermal results indicated that the addition of keratin enhanced the thermal stability of the composites compared to pure matrix. This was corroborated with dynamic mechanical analysis as the results revealed that the storage modulus of the composites increased with respect to the pure matrix. The morphology, evaluated by scanning electron microscopy, indicated a uniform dispersion of keratin in the chitosan-starch matrix as a result of good compatibility between these biopolymers, also corroborated by FTIR. These results demonstrate that chicken feathers can be useful to obtain novel keratin reinforcements and develop new green composites providing better properties, than the original biopolymer matrix.

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“…One of the most studied biobased polymer is starch, which can be found in potato, properties (Xie, et al, 2013 process producing a much better biocompatible polymer (Herculano, et al, 2009 Furthermore, the premix in every mixture was melt-compounded using a twin- conditions where no irreversible alteration, of the examined composites, will occur.…”

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confidence: 99%

Thermoplastic starch modified with microfibrillated cellulose and natural rubber latex: A broadband dielectric spectroscopy study

Drakopoulos

Karger‐Kocsis

Kmetty

et al. 2017

Carbohydrate Polymers

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Starch-based nano-biocomposites

Abstract: Please refer to published version for the most recent bibliographic citation information. If a published version is known of, the repository item page linked to above, will contain details on accessing it.

Cited by 490 publications

References 299 publications

Understanding the structural features of high-amylose maize starch through hydrothermal treatment

Understanding the structural features of high-amylose maize starch through hydrothermal treatment

All Green Composites from Fully Renewable Biopolymers: Chitosan-Starch Reinforced with Keratin from Feathers

Thermoplastic starch modified with microfibrillated cellulose and natural rubber latex: A broadband dielectric spectroscopy study

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