Surface esterification of cellulose fibres: Processing and characterisation of low-density polyethylene/cellulose fibres composites

Pasquini, Daniel; Teixeira, Emerson Luiz; Curvelo, Antônio Aprígio da Silva; Belgacem, Mohamed Naceur; Dufresne, Alain

doi:10.1016/j.compscitech.2007.05.009

Cited by 135 publications

(86 citation statements)

References 18 publications

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“…It seems that in this case, the aspect ratio played the major role on the mechanical properties of the PE-composites, since severe reaction conditions (time and the use of a swelling solvent) increased the DS, but led, in general, to a considerable decrease in the fiber length, as previously reported [6,7], and therefore in the aspect ratio. These results are in agreement with published data, where the LDPE composites with unmodified fibers presented better mechanical properties than those with fibers esterified for 4 h in toluene with dodecanoyl and octadecanoyl chloride [12]. Moreover, the storage modulus increased considerably with the filler content (Fig.…”

Section: Mechanical Propertiessupporting

confidence: 83%

“…Moreover, the storage modulus increased considerably with the filler content (Fig. 2C), as previously observed with other cellulosebased composites [12,[21][22][23].…”

Section: Mechanical Propertiessupporting

confidence: 73%

“…The incorporation of both unmodified and acylated cellulose fibers did not significantly affect the melting temperature, regardless of the fiber content and fatty acyl chain length. This behavior had already been observed with other natural fiber-based composites [12,18,19]. As expected, the enthalpy of fusion (DH m ) decreased with the fiber loading (PEC12T1h series) due to the corresponding decrease in the amount of matrix.…”

Section: Thermal Propertiessupporting

confidence: 56%

“…This strategy is particularly relevant because of the renewable and biodegradable nature of fatty acids and, of course, of their predominantly non-polar nature. However, only a few studies on the preparation and characterization of composites with cellulose fibers esterified with fatty acids and PE have been published thus far [10][11][12]. These studies considered only fatty acid derivatives with C11/C18 and C12/C18 aliphatic chains, respectively, neglecting important parameters, such as the degree of substitution (DS), fibers morphology and the fatty chain length.…”

Section: Introductionmentioning

confidence: 99%

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Composites based on acylated cellulose fibers and low-density polyethylene: Effect of the fiber content, degree of substitution and fatty acid chain length on final properties

Freire

Silvestre

Neto

et al. 2008

Composites Science and Technology

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a b s t r a c tLow-density polyethylene was filled with unmodified and fatty acid (hexanoic, dodecanoic, octadecanoic and docosanoic acids) esterified cellulose fibers. The thermal and mechanical properties, morphology and the water absorption behavior of the ensuing composites were investigated. The chemical modification of the cellulose fibers with fatty acids clearly improved the interfacial adhesion with the matrix and hence the mechanical properties of the composites and decreased their water uptake capacity. The performance of the composites was strongly affected by the degree of substitution (DS) and the fatty chain length as indicated by the fact that esterified cellulose fibers with low DS gave composites with better mechanical properties.

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Section: Mechanical Propertiessupporting

confidence: 83%

“…Moreover, the storage modulus increased considerably with the filler content (Fig. 2C), as previously observed with other cellulosebased composites [12,[21][22][23].…”

Section: Mechanical Propertiessupporting

confidence: 73%

Section: Thermal Propertiessupporting

confidence: 56%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Composites based on acylated cellulose fibers and low-density polyethylene: Effect of the fiber content, degree of substitution and fatty acid chain length on final properties

Freire

Silvestre

Neto

et al. 2008

Composites Science and Technology

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show abstract

“…Porém, com a adição da fibra de bananeira, houve um acréscimo no grau de cristalinidade (X c ). A temperatura de fusão cristalina pode ser influenciada pela presença da carga celulósica [24] , contudo este efeito não foi observado nas misturas estudadas.…”

Section: Resultsunclassified

Substituição da fibra de vidro por fibra de bananeira em compósitos de polietileno de alta densidade: parte 1. Avaliação mecânica e térmica

Gomes¹,

Visconte²,

Pacheco³

2013

Polímeros

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Resumo: A utilização de resíduo de fibra natural em substituição à fibra de vidro foi avaliada. Foram estudados compósitos de polietileno de alta densidade, HDPE, e fibra de bananeira com 10, 20, 30 e 40% (m/m) de fibra. Compósitos com fibra de vidro, mesma matriz polimérica e nas mesmas proporções, foram preparados para comparação. Os compósitos foram obtidos em extrusora dupla-rosca co-rotacional interpenetrante e os corpos de prova foram preparados por injeção. As propriedades mecânicas sob tração, flexão e impacto foram avaliadas. As propriedades térmicas foram analisadas por calorimetria diferencial de varredura (DSC) e análise termogravimétrica (TG). A incorporação de fibra de bananeira no HDPE resultou no aumento de cristalinidade do polímero. Houve, também, considerável aumento no grau de reforço mecânico nos compósitos pela incorporação da fibra natural. Foi possível comprovar a substituição da fibra de vidro pela fibra de bananeira em determinados percentuais, quando misturados ao HDPE, sem prejuízo às propriedades. A análise termogravimétrica dos compósitos mostrou que o início de degradação se deu numa faixa de temperatura intermediária entre a da fibra e a da matriz polimérica. Palavras-chave: Fibra de bananeira, polietileno de alta densidade, compósitos. Mechanical and Thermal Behavior of Composites Based on High Density Polyethylene and Banana Tree FiberAbstract: The use of banana tree fiber instead of glass fiber in polyethylene composites was evaluated. Composites of high density polyethylene with 10, 20, 30 and 40 wt. % of banana fiber were investigated. For comparison, composites with glass fiber, with the same polymeric matrix and proportions, were prepared. The samples were produced using an intermeshing co-rotating twin-screw extruder and injection molding. The mechanical properties investigated were the tensile, flexural and impact resistances of the composite. Thermal analyses were carried out by differential scanning calorimetry (DSC) and thermogravimetry (TG). The incorporation of fiber resulted in an increase in the composite degree of crystallinity. A considerable increase in mechanical reinforcement was achieved by incorporation of banana fiber in the composites. Thus, the replacement of fiberglass by banana fiber is possible when the components are used in specific proportions. Thermogravimetric analysis of the composites showed intermediate degradation temperatures between the values for banana fiber and polymeric matrix.

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Poly (ethylene‐terephthalate) Reinforced with Hemp Fibers: Elaboration, Characterization, and Potential Applications

Talla

Erchiqui

Pagé

2017

Handbook of Composites From Renewable Materials

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Surface esterification of cellulose fibres: Processing and characterisation of low-density polyethylene/cellulose fibres composites

Cited by 135 publications

References 18 publications

Composites based on acylated cellulose fibers and low-density polyethylene: Effect of the fiber content, degree of substitution and fatty acid chain length on final properties

Composites based on acylated cellulose fibers and low-density polyethylene: Effect of the fiber content, degree of substitution and fatty acid chain length on final properties

Substituição da fibra de vidro por fibra de bananeira em compósitos de polietileno de alta densidade: parte 1. Avaliação mecânica e térmica

Poly (ethylene‐terephthalate) Reinforced with Hemp Fibers: Elaboration, Characterization, and Potential Applications

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