Mechanical properties of a polyurethane hybrid composite with natural lignocellulosic fibers

Otto, Guilherme Piovezan; Moisés, Murilo Pereira; Carvalho, Gizilene Maria de; Rinaldi, Andrelson W.; Garcia, Jocilaine; Radovanovic, Eduardo; Fávaro, Sílvia Luciana

doi:10.1016/j.compositesb.2016.11.035

Cited by 95 publications

(51 citation statements)

References 41 publications

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“…In this current study, the authors have endeavored to overcome the drawbacks of CE/BOZ resin using natural fibers (NFs). NFs are nowadays considered as a serious alternative to the synthetic fibers (SFs) for the use as reinforcements in composite materials . The benefits of NFs over SFs are enormous; among them are their low density, low cost, high resistance to breakage during processing, low energy content, recyclability and so forth .…”

Section: Introductionmentioning

confidence: 95%

High‐performance polymeric materials with greatly improved mechanical and thermal properties from cyanate ester/benzoxazine resin reinforced by silane‐treated basalt fibers

Zegaoui

Derradji

et al. 2018

J of Applied Polymer Sci

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This present article investigates the effect of silane-treated basalt fibers (TBFs) on the morphological, mechanical and thermal properties of cyanate ester/benzoxazine (CE/BOZ) resin composites. The characterization was made using a scanning electron microscopy (SEM), Fourier Transform Infrared Spectroscopy (FTIR), flexural test, impact strength (IS) test, microhardness test, dynamic scanning calorimetry, and thermogravimetric analysis. The mechanical test results inferred the distinctive improvements in the values of the flexural strength and modulus, IS, and microhardness of the CE/BOZ composites. The thermal stabilities in terms of the T g , T 5% , T 10% , and T HRI were appreciably improved and were higher than those of the pure CE/BOZ resin. Data from the SEM and FTIR tests ascertained the good dispersion and adhesion between the TBFs and the resin matrix, which might be behind the significant enhancement in the ultimate performances of the composites, with respect to the distinguished properties of BFs. V C 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46283.

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Section: Introductionmentioning

confidence: 95%

High‐performance polymeric materials with greatly improved mechanical and thermal properties from cyanate ester/benzoxazine resin reinforced by silane‐treated basalt fibers

Zegaoui

Derradji

et al. 2018

J of Applied Polymer Sci

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“…The use of lignocellulosic fibers as reinforcement in polymeric matrices has been studied extensively in recent years . Simultaneously, biodegradable green composites reinforced with cellulosic fiber in nanoscale size has gained the attention due to necessity of new materials development, which replace polymers and the reinforcements extracted from petroleum by biodegradable materials, from renovable sources and that do not hazard the environment .…”

Section: Introductionmentioning

confidence: 99%

Novel biodegradable composites based on PHBV: Effect of nanocellulose incorporation on the non‐isothermal crystallization kinetic and structural parameters

Benini¹,

Ornaghi

Bianchi

et al. 2018

Polymer Composites

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This study presents the non‐isothermal behavior of poly(3‐hydroxybutyrate‐co‐3‐hydroxyvalerate) (PHBV) biodegradable films with 1–5 wt% of cellulose nanoparticles (CNs) manufactured by solution casting using N,N‐dimethylformide and chloroform as the solvents. X‐ray diffraction and scanning electron microscopy with field emission gun were performed for CNs in order to determine its morphology and crystalline properties. The effect of non‐isothermal crystallization of PHBV and its nanocomposites was studied using differential scanning calorimetry technique. The incorporation of CNs increases the crystallization rate with up to 3 wt%. Structural parameters were studied using positron annihilation lifetime spectroscopy and small‐angle X‐ray scattering. The free volume does not change upon CNs addition in spite of form less perfect crystals and increase the lamellar thickness. POLYM. COMPOS., 40:3156–3165, 2019. © 2018 Society of Plastics Engineers

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“…Those peaks can be visible prior and after alkali treatment. Even whole hemicellulose is removed, lignin residue is still present in the fiber structure, what is confirmed by the small peak at about 1240-1250 cm -1 , that correspond to C-O vibration was also attributed of lignin [18]. Samples presented little absorptions between 1500 cm -1 and 1400 cm -1 , which correspond to unsaturation (C=C) in the molecules, which may be related to the waxes, extractives and lignin, and is in agreement with the lignocellulosic natural fibers [19].…”

Section: Resultsmentioning

confidence: 77%

Properties of Natural Rubber Biocomposities Filled with Alkaline Modified Oat Straw

Masłowski¹,

Strzelec²

2018

Journal of Renewable Materials

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Novel elastomer biocomposites based on straw fibers (raw or chemically modified) as reinforcing elements of natural rubber (NR) were reported and studied. Oat straw fibres with different average lengths were used. Lignocellulose materials were incorporated into the elastomer, before and after chemical surface modification involving sodium hydroxide. Fourier transform infrared spectroscopy (FTIR) and microscopy techniques were employed for characterization of fillers. The kinetics of rubber mixtures, as well as rheometric properties of compounds were determined. The cross-linking density was executed on the basis of equilibrium solventswelling measurements applying the modified Flory-Rehner equation. The morphology of biocomposites samples was analyzed by a scanning electron microscopy. Mechanical characteristic: the values of hardness, tensile strength and attenuation coefficient were also determined. The physical and chemical investigations have proved the reinforcing effect of treated oat straw on natural rubber vulcanizates.

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Mechanical properties of a polyurethane hybrid composite with natural lignocellulosic fibers

Cited by 95 publications

References 41 publications

High‐performance polymeric materials with greatly improved mechanical and thermal properties from cyanate ester/benzoxazine resin reinforced by silane‐treated basalt fibers

High‐performance polymeric materials with greatly improved mechanical and thermal properties from cyanate ester/benzoxazine resin reinforced by silane‐treated basalt fibers

Novel biodegradable composites based on PHBV: Effect of nanocellulose incorporation on the non‐isothermal crystallization kinetic and structural parameters

Properties of Natural Rubber Biocomposities Filled with Alkaline Modified Oat Straw

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