Effect of mechanical activation pretreatment on the properties of sugarcane bagasse/poly(vinyl chloride) composites

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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“…Other less frequently used polymers are polystyrene (PS) and high impact polystyrene (HIPS) [101,192] .…”

Section: Lignocellulosic Fibers As Reinforcement In Compositesmentioning

confidence: 99%

Vegetal fibers in polymeric composites: a review

et al. 2015

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“…[20], for its application is not limited by reagent and equipment, and the equipment is also simple and easy for mass production. In our previous works [19,21,22], MA was used for the pretreatment of starches, sugarcane bagasse, and cassava stillage residue, and the results showed that MA could improve their accessibility and reactivity because the strong mechanical actions resulted in the destruction of stable aggregate structure, the decrease of particle size and crystallinity, and the weakening of inter-and intra-molecular hydrogen bonding, which also enhanced the reaction efficiency for the good dispersion and contact between the reactants. Moreover, our group has developed the MA-assisted solid phase reaction for efficient chemical modification of starch and cellulosic materials [23,24].…”

Section: Introductionmentioning

confidence: 98%

“…The chemical reactivity of the solids 5 can be improved for a part of the mechanical energy changes into the internal energy of material under the mechanical actions during the MA process [19]. MA is widely used in the mineral processing, preparation of nanomaterials, pharmaceutical, etc.…”

Section: Introductionmentioning

confidence: 99%

Effect of mechanical activation on structure changes and reactivity in further chemical modification of lignin

Zhao

Zhang

et al. 2016

International Journal of Biological Macromolecules

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“…The improved adhesion also reduced the fiber pullout lengths experienced on the failure surfaces of tensile test. Huang et al [23] used the untreated and differently treated sugar cane bagasse (SCB) to produce composites with poly vinyl chloride (PVC) as polymer matrix. For the unmodified SCB/PVC composites, the split and demolition of the firm structure of SCB fibres, reduce in element size and deteriorating of hydrogen bonds induced by intensive milling appreciably increased the interfacial bonding between SCB and PVC matrix, which were visibly observed by the SEM photographs of fractured surfaces for microstructure of the composites reinforced with unmilled and 120 min milled SCBs.…”

Section: Gilfillana Et Al [21]mentioning

confidence: 99%