Effects of chemical treatments of hybrid fillers on the physical and thermal properties of wood plastic composites

Gwon, Jae Gyoung; Lee, Sun Young; Chun, Sang Jin; Doh, Geum-Hyun; Kim, Jung Hyeun

doi:10.1016/j.compositesa.2010.06.011

Cited by 130 publications

(77 citation statements)

References 16 publications

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“…FTIR spectra of cellulose nanofibers and cellulose nanocrystals are shown in the Figure 4a, it 387 is observed that cellulose nanofibers show the band at 896 cm -1 which is assigned as β-glucosidic 388 linkage for the cellulose I structure and cellulose nanocrystals shows the band at 894 cm -1 position 389 which is due to the cellulose II structure (Gwon, Lee, Chun, Doh & Kim, 2010). The change 390 occurred was due to the rotation of glucose residue around the glucosidic bond (Ray & Sarkar, 391 2001).…”

Section: 13cnc Vs Cnf 385mentioning

confidence: 99%

Revalorization of sunflower stalks as novel sources of cellulose nanofibrils and nanocrystals and their effect on wheat gluten bionanocomposite properties

Fortunati

Luzi

Jiménez

et al. 2016

Carbohydrate Polymers

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Thomas, S.; Kenny, J.... (2016). Revalorization of sunflower stalks as novel sources of cellulose nanofibrils and nanocrystals and their effect on wheat gluten bionanocomposite properties. Carbohydrate Polymers. 149:357-368. doi:10.1016Polymers. 149:357-368. doi:10. /j.carbpol.2016. Novel gluten based bionanocomposites reinforced with cellulose nanofibrils (CNF) and cellulose 17 nanocrystals (CNC) extracted from sunflower stalks by a steam explosion treatment and a 18 hydrolysis procedure, respectively, were prepared by casting/evaporation. The extracted cellulose 19 nanomaterials, both CNC and CNF, were embedded in gluten matrix and their effect was 20 investigated. Morphological investigations highlighted that gluten based bionanocomposites 21showed a homogenous morphology, the absence of visible cellulose nanoreinforcements, and the 22 presence of holes for Gluten_CNF nanocomposites. Gluten_CNF showed a reduction of water 23 vapour permeability coefficients but the values are higher respect to gluten reinforced with CNC. 24This behaviour could be related to the ability of CNC to increase the tortuous path of gas molecules. 25Moreover, the results from thermal, mechanical and barrier properties confirmed the strong 26 interactions obtained between CNC and gluten matrix during the process. 1.Introduction 34The development and use of green resources represent new objectives for reducing gas emissions 35 and consequent pollution while, in this context, lignocellulosic materials represent renewable 36 resources for production of fuel ethanol from sugars. Among lignocellulosic materials, the use of 37 agricultural residues is of particular interest because it has also the benefit of disposal of 38 problematic solid wastes which usually do not have any economic alternative. 39Sunflowers have been considered as one of the major sustainable lignocellulosic materials used not 40 only to extract oils but also for producing biofuels as alternative to fossil fuels (Vaithanomsat, 41 Chuichulcherm & Apiwatanapiwat, 2009; Berglund, 2007). Sunflowers are renewable and are 42 cultivated in large quantities (about 30-35 million metric tons) around the world; while sunflower 43 seeds represent the fourth source of oil in the world, heads, stalks and leaves remain unutilized after 44 harvesting . These residues are not eco-45 friendly because after harvesting they are typically burnt under not well-controlled conditions 46 causing a negative environmental impact. Every year, the volume of sunflower residues produced in 47 the world represents a huge environmental impact with 3-7 tonnes of dry matter/ha (Díaz, Cara, 48Ruiz, Pérez-Bonilla & Castro, 2011; Vaithanomsat, Chuichulcherm & Apiwatanapiwat, 2009.). For 49 these reasons, the attention of the scientific community is now oriented to the revalorization of 50 wastes after sunflower harvesting, and currently the most common use of residual stalks is for 51 bioethanol production (Jung, Yu, Eom & Hong, 2013). However, sunflower residues could be used 52 also as precursors fo...

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Section: 13cnc Vs Cnf 385mentioning

confidence: 99%

Revalorization of sunflower stalks as novel sources of cellulose nanofibrils and nanocrystals and their effect on wheat gluten bionanocomposite properties

Fortunati

Luzi

Jiménez

et al. 2016

Carbohydrate Polymers

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“…Particularly, researches with regard to wood plastic composite materials have been continuously increased within the last 20 years because of the advantageous characteristics of each constituent in composite materials [1]. It is believed that source of petroleum based products are limited and uncertain.…”

Section: Introductionmentioning

confidence: 99%

Polypropylene/olive pit & almond shell polymer composites: wear and friction

Taşdemi̇r

2017

IOP Conf. Ser.: Mater. Sci. Eng.

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Wood plastic composites (WPC) are made from wood and annual plant fiber or flours, mixing with plastics materials. WPC provide better properties than resources that form it. This renewable material has many utilization areas because of outstanding properties such as enhanced strength, stiffness, creep, physical and mechanical properties and dimension stability. In the present work, series of filled Polypropylene (PP) composites with olive pit and almond shell flour loading (between 0-40 wt %) were prepared, to study the effect of the filler content on the mechanical, wear and friction properties of polypropylene polymer composites. IntroductionParticularly, researches with regard to wood plastic composite materials have been continuously increased within the last 20 years because of the advantageous characteristics of each constituent in composite materials [1]. It is believed that source of petroleum based products are limited and uncertain. So an alternative with cheap sustainable and easily available raw material is required. The countries growing plant and fruit are not for only agricultural purpose but also to generate raw materials for industries. Most of the developing countries trade lignocellulosic fibers for improving economic condition of poor farmers as much as country support. Recently polymer composites containing cellulosic fibers are under focus in literature as well as industries [2]. The olive oil extraction processes generates huge amounts of solid lignocellulosic waste, representing 30-35% by weight of the olive fruit. The chemical composition of which; mainly composed of lignin, hemicellulose and cellulose. Olive waste has a growing potential as a reinforcement filler materials among many other uses [3][4][5][6][7][8]. Qutaiba studied of a new range of sustainable reinforced polymer composite materials using powdered olive pits as a novel filler material to be used with epoxy resin. Also the influence of the untreated and treated powder loading (weight fraction) on the void content and the mechanical properties of the composites was examined. The results show significant improvements in mechanical properties for composites reinforced with treated olive pits than composites reinforced with untreated olive pits [9]. An investigation was carried out on the effects of olive pit and almond shell powder ratio on the mechanical, wear and friction properties of polypropylene polymer composites. Olive pit and almond shell powder, in four different concentrations (10, 20, 30 and 40 wt %), was added to PP to produce composites. The properties, including density, water absorption, Vicat softening point, heat deflection temperature, wear rate, friction of the composites were investigated.

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“…Hydrophilicity represents a characteristic of the filler surface induced by the hydroxyl group for being able to interact with one another forming inter -and intra molecular hydrogen bonds. It is necessary to increase the compatibility between the hydrophilic fibre fillers and the hydrophobic Polymer matrix; hence the need for fibre modification [7,8].…”

Section: Introductionmentioning

confidence: 99%

Effect of Carbonization Time on the Morphology and Mechanical Properties of Natural Rubber Composites

Momoh¹,

Mamza²,

Gimba³

et al. 2017

IOSR JPTE

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Effects of chemical treatments of hybrid fillers on the physical and thermal properties of wood plastic composites

Cited by 130 publications

References 16 publications

Revalorization of sunflower stalks as novel sources of cellulose nanofibrils and nanocrystals and their effect on wheat gluten bionanocomposite properties

Revalorization of sunflower stalks as novel sources of cellulose nanofibrils and nanocrystals and their effect on wheat gluten bionanocomposite properties

Polypropylene/olive pit & almond shell polymer composites: wear and friction

Effect of Carbonization Time on the Morphology and Mechanical Properties of Natural Rubber Composites

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