Influence of natural fiber type in eco‐composites

García, M.; Garmendia, Izaskun; García, Javier Moreno

doi:10.1002/app.27519

Cited by 100 publications

(69 citation statements)

References 26 publications

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“…In general, adding natural fibers to polymers increases its brittle character, normally changing its strain behavior; an interesting result obtained in this work was the increase in HDT values of cotton nanolinter compounds with no change in strain at break values (see Figure 6). This increase in HDT values indicates that the acid hydrolysis was successful, and may result in an increase in the use temperature of PCL products 39,[41][42] . for supplying the cotton nanolinter, and to Federal University of São Carlos Polymer Laboratory for HDT experiments.…”

Section: Acknowledgmentsmentioning

confidence: 95%

Processing and Properties of PCL/Cotton Linter Compounds

et al. 2017

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Biodegradable compounds of poly(ε-caprolactone) (PCL)/ cotton linter were melting mixed with filling content ranging from 1% to 5% w/w. Cotton linter is an important byproduct of textile industry; in this work it was used in raw state and after acid hydrolysis. According to the results of torque rheometry no decaying of viscosity took place during compounding, evidencing absence of breaking down in molecular weight. The thermal stability increased by 20% as observed in HDT for PCL/cotton nanolinter compounds. Adding cotton linter to PCL didn't change its crystalline character as showed by XRD; however an increase in degree of crystallinity was observed by means of DSC. From mechanical tests in tension was observed an increase in ductility of PCL, and from mechanical tests in flexion an increase in elastic modulus upon addition of cotton linter, whereas impact strength presented lower values for PCL/cotton linter and PCL/cotton nanolinter compounds. SEM images showed that PCL presents plastic fracture and cotton linter has an interlacing fibril structure with high L/D ratio, which are in agreement with matrix/fibril morphology observed for PCL/cotton linter compounds. PCL/cotton linter compounds made in this work cost less than neat PCL matrix and presented improved properties making feasible its commercial use.

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Section: Acknowledgmentsmentioning

confidence: 95%

Processing and Properties of PCL/Cotton Linter Compounds

et al. 2017

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“…There has been a growing interest in the development of environmentally benign composites based on biodegradable poly(lactic acid) (PLA) polymer and various lignocellulosic materials such as kenaf [1,2], flax [3], hemp [4], bamboo [5,6], wood fibers [7], and reed fibers [8]. Addition of lignocellulosic materials in PLA is intended to improve the properties of this polymer without compromising its biodegradability.…”

Section: Introductionmentioning

confidence: 99%

“…Addition of lignocellulosic materials in PLA is intended to improve the properties of this polymer without compromising its biodegradability. Although there has been very little work in the development of biodegradable polymer composites using rice hulls [1], several studies have demonstrated the potential of rice hulls in polymer composites [9][10][11][12][13]. Rice hulls are siliceous lignocellulosic residues, which have moderate water resistance and stability against degradation.…”

Section: Introductionmentioning

confidence: 99%

Characterization of hydrolytic degradation of polylactic acid/rice hulls composites in water at different temperatures

Ndazi¹,

Karlsson²

2011

Express Polym. Lett.

144

107

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Abstract. Hydrolytic degradations of polylactic acid/rice hulls (PLA/RH) composites with various rice hulls contents due to water absorptions at 23, 51 and 69°C were investigated by studying the thermal properties, chemical composition, molecular weight, and morphology of the degraded products. The results have attested that the stability of PLA/RH composites in water depends slightly on rice hulls contents but it is significantly influenced by water temperature. Water absorption in 30 days at 23°C was between 0.87 and 9.25% depending on rice hull contents. However, at thermophilic temperatures, the water absorption and degradation of these products were increased significantly. Saturations were achieved in less than 25 and 9 days at 51°C and 69°C, respectively, while hydrolytic degradation was demonstrated by an increase in fragility and development of crystallinity. At 69°C, there were significant reductions of the decomposition and glass transition temperatures of the polymer by 13°C. These changes were associated with the reduction of the molecular weight of PLA from 153.1 kDa to !10.7 kDa due to hydrolysis of its ester group.

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“…In addition to being a good economic practice, the use of natural fibers can also reduce the use of products are difficult to decompose 2,3 . The use of vegetable fibers as a reinforcement in composite materials boasts a number of advantages: a great potential to improve the performance of the polymers in technological applications 4,5 , a lessening of the environmental impact of its production 6 , relatively low costs, the abundance of such fibers, and the potential biodegradability under suitable environmental conditions 4,5 .…”

Section: Introductionmentioning

confidence: 99%

Behavior in simulated soil of recycled expanded polystyrene/waste cotton composites

et al. 2013

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Composites consisting of waste cotton yarn (CF) from the textile industry and postconsumer expanded polystyrene (EPS) was followed during 90 days of exposure in simulated soil. The mechanical properties, morphologies and chemical natures of the composites were determined before and after exposure in simulated soil. The composites were made using a single-screw extrusion, a twin-screw extrusion and injection molding. The composites showed an increase of the mechanical properties nearly 50% in relation to the recycled expanded polystyrene (rEPS). After exposure in simulated soil the composites presented losses of mechanical properties. Evidence of the oxidation of the samples was demonstrated by the increase in the values of the carbonyl index after 30 days of exposure in simulated soil. Changes in the color of the surface of the sample were observed after 90 days of exposure and are due to the fungi and bacteria colonization on the surface.

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Influence of natural fiber type in eco‐composites

Cited by 100 publications

References 26 publications

Processing and Properties of PCL/Cotton Linter Compounds

Processing and Properties of PCL/Cotton Linter Compounds

Characterization of hydrolytic degradation of polylactic acid/rice hulls composites in water at different temperatures

Behavior in simulated soil of recycled expanded polystyrene/waste cotton composites

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