Influence of absorbed moisture on surface hydrophobization of ethanol pretreated and plasma treated ramie fibers

Zhou, Zhou; Wang, Jilong; Xiao, Huang; Zhang, Liwen; Moyo, Senelisile; Sun, Shiyuan; Qiu, Yiping

doi:10.1016/j.apsusc.2011.12.126

Cited by 27 publications

(10 citation statements)

References 32 publications

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“…At least five experiments were done for each fibre samples. This method allows to test a large number of fibres at the same time thus giving a good statistical determination of the fibre wettability as compared to other measurements made on single fibre or bundle and based on the Wilhelmy (Cantero et al, 2003) or the sessile drop (Zhou et al, 2012) techniques. It has to be emphasized that the capacity of natural fibres to absorb solvents and swell make the surface measurements delicate independent of the technique used.…”

Section: Wettability Measurementsmentioning

confidence: 99%

Study of the interface in natural fibres reinforced poly(lactic acid) biocomposites modified by optimized organosilane treatments

Moigne¹,

Longerey²,

Taulemesse³

et al. 2014

Industrial Crops and Products

121

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This study investigates the effect of optimized organosilane treatments on the surface properties of flax fibres and the resulting mechanical properties and interface modifications in flax fibres reinforced poly(lactic acid) (PLA) biocomposites. Optimizing the treatment conditions increases the hydrophobicity of the fibres, and improves significantly the mechanical properties of the biocomposites, while reducing largely the scattering. The origins of the reinforcement at the fibre/matrix interface are investigated at the macromolecular and the microstructural levels by physico-chemical and mechanical cross-analyses. It is shown that it results from both modified chemical coupling and mechanical interlocking at the fibre/matrix interface. Dynamic mechanical thermal analysis reveals a decrease in damping for treated biocomposites because of the formation of a layer of immobilized macromolecular chains resulting from strong interactions at the interface. In situ observations of crack propagation by scanning elec-tron microscopy illustrate clearly that the treated biocomposites show a cohesive interfacial failure at much higher loads, highlighting the enhanced load transfer from the PLA to the flax fibres.

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Section: Wettability Measurementsmentioning

confidence: 99%

Study of the interface in natural fibres reinforced poly(lactic acid) biocomposites modified by optimized organosilane treatments

Moigne¹,

Longerey²,

Taulemesse³

et al. 2014

Industrial Crops and Products

121

View full text Add to dashboard Cite

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“…It was also observed that argon plasma can introduce oxygen onto the surface. 15,16 Silver is well-known for its strong antibacterial properties, and is often exploited in topical pharmaceutical products. It is used in the form of Ag nanoparticles, Ag + ions or in a bound form as a part of a compound.…”

Section: Introductionmentioning

confidence: 99%

Antibacterial wound dressing: plasma treatment effect on chitosan impregnation and in situ synthesis of silver chloride on cellulose surface

et al. 2015

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The treatment of wounds often deals with bacterial infections thus complicates healing. Our aim was to prepare cellulose wound dressings with antibacterial properties. Cellulose dressing was exposed to argon plasma discharge, impregnated with chitosan and then silver chloride particles were precipitated in situ on the dressing´s surface. The effect of plasma treatment on both the chitosan impregnation and silver chloride precipitation was studied, together with the antibacterial properties of the prepared dressings. 10 The materials were characterized by optical microscopy, scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), goniometry, absorption atomic spectroscopy (AAS) and zeta potential measurement. The antibacterial potency of the dressings was assessed using environmental bacterial strains of Escherichia coli and Staphylococcus epidermidis. Plasma treatment had a positive effect on both chitosan impregnation and the silver chloride precipitation. The antibacterial tests performed on 15 these wound dressings exhibited growth prevention of the two representative strains of Gram-positive and Gram-negative bacteria. These results are of medical interest. 65

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“…Improved interfacial adhesion and mechanical properties of bio-composites have been reported using plasma techniques (43)(44)(45)(46)(47)(48). More recently, the combination of chemical pretreatments, like alcohol with plasma treatment has been found to be effective to reduce the surface hydrophilicity of natural fibers and thus enhance the interface strength of the composites (49)(50)(51). However, it should be noted that process control is the critical aspect that final morphology and chemical modification strongly depend on the treatment conditions.…”

Section: Modification Of Natural Fibersmentioning

confidence: 96%

Applications of Lightweight Composites in Automotive Industries

Zhao

Zhou

2014

ACS Symposium Series

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Lightweight composites produced from renewable and biodegradable materials have been very promising to find wide applications in automotive industries and to lessen the dependence on exhausting petroleum resource. In this chapter, various natural fibers, traditional polymer and bio-polymer matrix systems are presented. Potentials and limitations of modification methods on natural fiber and manufacturing techniques for lightweight composites are reviewed in details. Major technical concerns and challenges regarding natural fiber reinforced composites are addressed. Examples of recent automotive industrial applications are given and future trends are outlined.

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Influence of absorbed moisture on surface hydrophobization of ethanol pretreated and plasma treated ramie fibers

Cited by 27 publications

References 32 publications

Study of the interface in natural fibres reinforced poly(lactic acid) biocomposites modified by optimized organosilane treatments

Study of the interface in natural fibres reinforced poly(lactic acid) biocomposites modified by optimized organosilane treatments

Antibacterial wound dressing: plasma treatment effect on chitosan impregnation and in situ synthesis of silver chloride on cellulose surface

Applications of Lightweight Composites in Automotive Industries

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