Biorenewable nanocomposites

Avérous, Luc; Pollet, Éric

doi:10.1557/mrs.2011.206

Cited by 35 publications

(6 citation statements)

References 86 publications

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“…The kinetics of bond cleavage in the main polymer chain is dependent on the type of bond present. There have been many reviews on biodegradable polymers [25,33,34,[54][55][56][57][58][59][60][61], which describe the main classes of polymers and main chain bond types that fall into this category, whether bio-derived, synthetic or modified (Table 1). The relative rate of hydrolysis under non-catalysed conditions has been determined for a range of polymer types as well as for model compounds of low molecular weight.…”

Section: Rate Of Hydrolysiseffect Of Chemical Bond Typementioning

confidence: 99%

Lifetime prediction of biodegradable polymers

Laycock

Nikolić

Colwell

et al. 2017

Progress in Polymer Science

473

364

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The determination of the safe working life of polymer materials is important for their successful use in engineering, medicine and consumer-goods applications. An understanding of the physical and chemical changes to the structure of widely-used polymers such as the polyolefins, when exposed to aggressive environments, has provided a framework for controlling their ultimate service lifetime by either stabilizing the polymer or chemically accelerating the degradation reactions. The recent focus on biodegradable polymers as replacements for more bio-inert materials such as the polyolefins in areas as diverse as packaging and as scaffolds for tissue engineering has highlighted the need for a review of the approaches to being able to predict the lifetime of these materials. In many studies the focus has not been on the embrittlement and fracture of the material (as it would be for a polyolefin) but rather the products of degradation, their toxicity and ultimate fate when in the environment, which may be the human body. These differences are primarily due to time-scale. Different approaches to the problem have arisen in biomedicine, such as the kinetic control of drug delivery by the bio-erosion of polymers, but the similarities in mechanism provide real prospects for the prediction of the safe service lifetime of a biodegradable polymer as a structural material. Common mechanistic themes that emerge include the diffusion-controlled process of water sorption and conditions for surface versus bulk degradation, the role of hydrolysis versus oxidative degradation in controlling the rate of polymer chain scission and strength loss and the specificity of enzyme-mediated reactions.

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Section: Rate Of Hydrolysiseffect Of Chemical Bond Typementioning

confidence: 99%

Lifetime prediction of biodegradable polymers

Laycock

Nikolić

Colwell

et al. 2017

Progress in Polymer Science

473

364

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“…[1][2][3] The biocompatibility and the eco-friendly character are specially attained when natural clay is used as the inorganic counterpart. The main research in this area was initially focused on the combination of clay, with lamellar or brous morphology, with the most abundant polymers on earth (cellulose, chitosan, starch), and it is being currently enlarged with the use of biopolymers derived from alternative sources, as those produced by microorganisms, such as microbial or bacterial polysaccharides 4,5 and polyesters 6 .…”

Section: Introductionmentioning

confidence: 99%

Clay-bionanocomposites with sacran megamolecules for the selective uptake of neodymium

et al. 2014

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“…2 indicates that MMT were intercalated by DSP after modification and converted into a nano-platelet filler. The peak of XRD at about 7.08 to 7.13 o is attributed to interlayer spacing or d-spacing (d 001 ), which represents the distance between two platelets of the MMT primary particle (Avérous and Pollet 2011). According to Bragg's law, it was calculated that the d 001 of the MMT used in the current study was about 1.25 nm.…”

Section: Test Results Inmentioning

confidence: 91%

Water-Resistant Soybean Adhesive for Wood Binder Employing Combinations of Caustic Degradation, Nano-Modification, and Chemical Crosslinking

Zhang¹,

Zhu²,

Lu³

et al. 2013

BioResources

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In an attempt to develop a soybean-protein wood adhesive with improved water resistance and good technical applicability, soybean protein was first degraded under strong alkali conditions and then subjected to chemical crosslinking combined with nano-modification. Results of plywood evaluation, GPC analysis, and XRD determination indicated that a soybean-protein adhesive that could bear 28 h boilingdry cycled treatment according to standard JIS K6806-2003. The waterresistance improvement was attributed to both the chemical crosslinking of the degraded soybean protein (DSP) by MDI and the nanomodification of DSP by intercalated or exfoliated montmorillonite (MMT). Caustic degradation improved the technical applicability of the DSP adhesive by sharply reducing the viscosity of high-content protein solution. MMT nano-modification can obviously prolong the pot lives of MDI-modified DSP adhesives but slightly decrease their dry bond strength.

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Biorenewable nanocomposites

Abstract: Abstract

Cited by 35 publications

References 86 publications

Lifetime prediction of biodegradable polymers

Lifetime prediction of biodegradable polymers

Clay-bionanocomposites with sacran megamolecules for the selective uptake of neodymium

Water-Resistant Soybean Adhesive for Wood Binder Employing Combinations of Caustic Degradation, Nano-Modification, and Chemical Crosslinking

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