The influence of wood flour particle size and content on the rheological, physical, mechanical and morphological properties of EVA/wood cellular composites

Zimmermann, Matheus Vinícius Gregory; Turella, Taís Caroline; Santana, Ruth M. C.; Zattera, Ademir J.

doi:10.1016/j.matdes.2014.01.010

Cited by 35 publications

(23 citation statements)

References 24 publications

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“…The different behavior of the tensile strength for the composites reinforced with WF or OSF may be a consequence of their morphology and aspect ratio [24][25][26]. In fact, in short fibers composites the aspect ratio is believed to play a key role in the reinforcing capabilities of a fiber.…”

Section: Mechanical Propertiesmentioning

confidence: 99%

Polypropylene composites based on lignocellulosic fillers: How the filler morphology affects the composite properties

Naghmouchi

Espinach

Mutjé

et al. 2015

Materials & Design (1980-2015)

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Section: Mechanical Propertiesmentioning

confidence: 99%

Polypropylene composites based on lignocellulosic fillers: How the filler morphology affects the composite properties

Naghmouchi

Espinach

Mutjé

et al. 2015

Materials & Design (1980-2015)

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“…Due to the consumption of fossil fuels and the rise of environmental pollution, many scientists are directing their research towards ''green'' plastics (Stevens 2003). One of the most important renewable resources used in the plastics industry is biomass from wood (Zimmermann et al 2014;Bi et al 2018;Guo et al 2018) and crop plants (Karimia et al 2017;Hejna et al 2018a, b;Hemamalini and Dev 2018): corn (Nouraddini et al 2018), soy (Dhaliwala et al 2018, potatoes (Bergel et al 2018), cassava (Luchese et al 2017) and other edible plants (Ubeyitogullari and Ciftci 2016;Halal et al 2015). Due to the controversial use of food resources, there is a need to find sustainable non-food renewable sources.…”

Section: Introductionmentioning

confidence: 99%

Chemical structures, rheological and physical properties of biopolyols prepared via solvothermal liquefaction of Enteromorpha and Zostera marina biomass

et al. 2019

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In this work, liquefied biomass from the Baltic Sea was used for the preparation of rigid polyurethane (PUR) foams. The biomass contained 10 wt% of Enteromorpha macroalgae and 90 wt% of Zostera marina seagrass characterized by a high content of cellulose. The influence of time, temperature and the type of solvent on the efficiency of the liquefaction process and properties of biopolyols was determined. Obtained materials were analyzed in terms of chemical structure, rheological properties, thermal stability and basic physical and mechanical properties. It was found that optimal parameters for liquefaction of used biomass were: temperature of 150°C, reaction time of 6 h and a solvent mixture containing glycerol and poly(ethylene glycol) in ratio of 50:50 (biopolyol 50G50P_150). Under these conditions, 78 wt% of biomass was liquefied and resulting biopolyol was characterized by a hydroxyl number of 650 mg KOH/g. Depending on the used solvent mixture and the liquefaction temperature, biopolyols showed the character of Newtonian or non-Newtonian liquids. Rigid PUR foams were obtained by substitution of petrochemical polyol with 10, 20 and 30 wt% of biopolyol. It was found that the addition of biopolyol to foams' formulations did not cause significant changes in their chemical structure, while mechanical strength and thermal stability were enhanced. The presented study confirms that biomass from the Baltic Sea can be used for the synthesis of biopolyols and rigid polyurethane foams.

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“…This biodiversity is the result of different enzymatic systems associated with the biogeographical origin and food source, which strongly influence their ability to consume lignocellulosic materials [27]. Therefore, is essential to analyze the environment where the material will be applied, as well as the conditions under which it will be exposed, respecting the limits of its use [9,28,29].…”

Section: Introductionmentioning

confidence: 99%

Deterioration of Wood Plastics Composites by the White-Rot Fungus Pycnoporus sanguineus

et al. 2019

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Wood plastic composites (WPC) are characterized by the mixing of wood fibers with plastics, allowing the production of new products whose characteristics are in several aspects superior to those of the original products and represent an expanding class of durable and low-cost materials in which their uses can reduce the environmental footprint and the dependence on petroleum products. Nevertheless, WPC has some setbacks, including biodegradation, which shortens its life span. In this study, the wood composite was exposed to the white-rot fungus Pycnoporus sanguineus in order to evaluate its resistance to biodegradation. The WPC was prepared with a 1:1 ratio of Eucalyptus spp. bark as reinforcement agent and polypropylene as matrix. Mechanical and rheological properties and mass loss were evaluated from 15 to 120 days of fungus exposure. After 15 days, a mass loss was detected, which transmitted a negligible effect on the impact resistance of the composite. For the 120-day fungus-exposed composite, the fungus produced a biofilm under the WPC that create a special environment for lignocellulosic consuming led to deterioration of the mechanical properties and minor changes on the thermal–chemical stability of the WPC. Finally, the study gave a great indication of the susceptibility of a Eucalyptus-based composite to biodegradation.

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The influence of wood flour particle size and content on the rheological, physical, mechanical and morphological properties of EVA/wood cellular composites

Cited by 35 publications

References 24 publications

Polypropylene composites based on lignocellulosic fillers: How the filler morphology affects the composite properties

Polypropylene composites based on lignocellulosic fillers: How the filler morphology affects the composite properties

Chemical structures, rheological and physical properties of biopolyols prepared via solvothermal liquefaction of Enteromorpha and Zostera marina biomass

Deterioration of Wood Plastics Composites by the White-Rot Fungus Pycnoporus sanguineus

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