Effect of chemical treatments on water sorption and mechanical properties of flax fibres

Alix, Sébastien; Philippe, E.; Bessadok, Atef; Lebrun, Laurent; Morvan, Claudine; Marais, Stéphane

doi:10.1016/j.biortech.2009.04.067

Cited by 209 publications

(108 citation statements)

References 32 publications

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“…These methods drastically reduced the water sorption (from *7.5 to 6% at 50% r.h. for styrene treatment) [119]. Similar studies were performed by Alix et al [118] who tested the effect of maleic anhydride, acetic anhydride, silane and styrene on flax fibers. Once again, styrene treatment showed the strongest effect.…”

Section: Graftingmentioning

confidence: 63%

“…Ways of influencing the moisture content and moisture sorption kinetics are reviewed below. Different chemical treatments that influence the sorption isotherms of the fibers have been reported [69,112,118,119,120]. The treatment of flax fibers with acetic anhydride and styrene reduced the water uptake, whereas silane and maleic anhydride do not have such a positive effect [118].…”

Section: Water Sorption Of Single Fibersmentioning

confidence: 99%

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Factors affecting the hygroexpansion of paper

Lindner

2017

J Mater Sci

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Paper is a widely used packaging material and is nowadays regaining importance, e.g., as bio-based and biodegradable material. Moreover, new technologies such as polymer-fiber composites, printed electronics and the deep drawing of paper are developing. The process stability and also the resulting quality of paper converting processes such as coating, metallization, printing, and the printing of electronics are highly affected by the hygroexpansion of paper. In order to reduce production instability and to choose and develop paper substrates with ideal characteristics, critical parameters need to be known. This paper offers an extensive overview of those parameters, starting at a molecular and microscopic level with the effect of the constituents and morphology of single fibers, before moving on to paper contents, chemical modifications and additives and finally concluding with paper production and fiber network modification. It was found that the major influences are single fiber sorption, inter-fiber contacts, microfibril angle, fiber morphology (length, width, curliness) and fiber orientation. This review gives new ideas and insights for technologists working in research, development and production optimization of paper-based products.

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Section: Graftingmentioning

confidence: 63%

Section: Water Sorption Of Single Fibersmentioning

confidence: 99%

Factors affecting the hygroexpansion of paper

Lindner

2017

J Mater Sci

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“…Polyester bamboo [132] ,banana [133,134] , coconut [69,135] , curaua [111,136] , flax [137,138] ,hemp [139][140] , jute [141][142] , pineapple [143,144] , sisal [145,146] , sugarcane bagasse [74,147] Polyurethane (PU) banana [148] , coconut [149] , curaua [108] , sisal [150,151] Epoxy banana [114,152] , coconut [153,154] , cotton [155] , flax [156][157] , hemp [158] , juta [159][160][161][162] , pineapple [163] , sisal [164][165] Phenolic banana [166,167] , flax [168,169] , jute [170] , sisal [171][172][173][174]…”

Section: Vegetal Fibersmentioning

confidence: 99%

Vegetal fibers in polymeric composites: a review

et al. 2015

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RbstractThe need to develop and commercialize materials containing vegetal fibers has grown in order to reduce environmental impact and reach sustainability. Large amounts of lignocellulosic materials are generated around the world from several human activities. The lignocellulosic materials are composed of cellulose, hemicellulose, lignin, extractives and ashes. Recently these constituents have been used in different applications; in particular, cellulose has been the subject of numerous works on the development of composite materials reinforced with natural fibers. Many studies have led to composite materials reinforced with fibers to improve the mechanical, physical, and thermal properties. Furthermore, lignocellulosic materials have been treated to apply in innovative solutions for efficient and sustainable systems. This paper aims to review the lignocellulosic fibers characteristics, as well as to present their applications as reinforcement in composites of different polymeric matrices.

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“…insignificant values of X m parameter may result from the weak presence of the active sorption sites available within the wood cell walls; C: Guggenheim constant (-) which corresponds to the total sorption heat of the first sorbed layer (Alix et al 2009); K: Constant associated to water sorbed molecules on multi-layer (-) (Alix et al 2009); RH: Water activity or Relative humidity on a scale of zero to one (-).…”

Section: Names and Referencesmentioning

confidence: 99%

Sorption behavior of four tropical woods using a dynamic vapor sorption standard analysis system

Simo-Tagne¹,

Rémond

Rogaume

et al. 2016

Maderas, Cienc. tecnol.

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Sorption behavior of four tropical woods coming from Cameroon is studied using a Dynamic Vapor Sorption-Intrinsic apparatus. Sorption isotherms at 20°C and 40°C of Triplochiton scleroxylon (obeche), Entandrophragma cylindricum (sapele), Sterculia rhinopetala (lotofa) and Terminalia superba (frake also called limba) are compared to those in the literature with methods using saturated salts for lotofa and frake with satisfactory results. Experimental values are fitted using two sorption isotherm models.Sorption hysteresis is greatest in sapele and least in frake. When temperature increases, differences in the hysteresis of sorption among the woods decreases. Hystereses of all studied woods ranged from 0,5 to 3%. Our studied woods have lower equilibrium moisture content probably caused by the higher values of extractives content. The water sorbed molecules on multilayer during both adsorption and desorption at 20°C and 40°C is greater in the case of frake and lower in the case of lotofa. The water sorbed molecules on multilayer of sapele is greater than those of obeche. The predominance of multilayer over monolayer of our woods is from 0,2 to 0,4 relative humidity in adsorption phase, and from 0,3 to 0,4 relative humidity in desorption phase.

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Effect of chemical treatments on water sorption and mechanical properties of flax fibres

Cited by 209 publications

References 32 publications

Factors affecting the hygroexpansion of paper

Factors affecting the hygroexpansion of paper

Vegetal fibers in polymeric composites: a review

Sorption behavior of four tropical woods using a dynamic vapor sorption standard analysis system

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