Polyamide-6/vegetal fiber composite prepared by extrusion and injection molding

Santos, P. A. M. dos; Spinacé, Márcia A. S.; Fermoselli, Karen K.G.; Paoli, Marco-Aurélio De

doi:10.1016/j.compositesa.2007.08.011

Cited by 106 publications

(73 citation statements)

References 5 publications

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“…sisal or jute [14] . Its composite with polyamide-6 shows properties comparable to industrially produced composites with glass fibers [15] . By these reasons it is important to study the effect of the presence of the fiber and coupling agent on the thermal stability of the composites with polypropylene prepared by extrusion.…”

Section: Introductionmentioning

confidence: 83%

Mechanical properties, morphology and thermal degradation of a biocomposite of polypropylene and curaua fibers: coupling agent effect.

et al. 2013

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Biocomposites of polymers with vegetal fibers have a broad spectrum of applications due to their high specific properties in comparison to their counterparts made with fiberglass. Polypropylene, PP, composites with curaua fiber compatibilized with different concentrations of maleic anhydride grafted polypropylene, PP-g-MA, were characterized according to their mechanical properties, morphologies and thermal stabilities in oxidative and inert atmospheres. The composites were prepared by single screw extrusion and injection molded specimens were used for testing. The composite with 20 wt % of curaua fiber with and without compatibilizer presented improved mechanical properties compared to pure PP. The use of PP-g-MA as a compatibilizer significantly increased fiber/matrix adhesion, however, the mechanical properties were only slightly improved in comparison with composites without compatibilizer. We observed an improvement in thermal stability of the composites, compared to that expected from the weighted average of the individual components, both under inert and oxidative atmospheres. Furthermore, the thermal stability improved under inert atmosphere as a function of the concentration of compatibilizer. In this situation, indeed, there was a different shift of the weight loss processes owing to the presence of the compatibilizer.

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Section: Introductionmentioning

confidence: 83%

Mechanical properties, morphology and thermal degradation of a biocomposite of polypropylene and curaua fibers: coupling agent effect.

et al. 2013

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“…These interactions are attributed to their hydrophilic nature, making it possible to eliminate the use of coupling agents and surface modification of natural fibers, which are time consuming and increase the cost of the final composite materials (Graff 2005;Tajvidi and Feizmand 2009). Although there is considerable interest in nylon-based composites, there have been only a few studies of nylon-based NFCs, and the available literature focuses on mechanical and morphological properties (Santos et al 2007;de Arcaya et al 2009;Arsad et al 2013;Ozen et al 2013). There is a lack of information about the rheological and thermal properties of PA-based NFCs.…”

Section: Introductionmentioning

confidence: 99%

Thermal Analysis of Polyamide 6 Composites Filled by Natural Fiber Blend

Kiziltas¹,

Han²,

Kızıltaş³

et al. 2016

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aThis study describes changes in the viscoelastic and thermal properties of composites made with various percentages (up to 20 wt.%) of a natural fiber blend (a mixture of flax, kenaf, and hemp fibers) and polyamide 6 (PA 6). According to the differential scanning calorimetry (DSC) analyses, the incorporation of natural fibers produced minor changes in the glass transition (Tg), melting (Tm), and crystallization temperature (Tc) of the PA 6 composites. Because of the reinforcing effect of natural fibers, the storage modulus (E') from dynamic mechanical thermal analysis (DMTA) increased as the natural fiber content increased. The E' values at room temperature and Tg were 3960 MPa and 1800 MPa, respectively, with the incorporation 20 wt.% fiber, which were 68% and 193% higher than the E' value of neat PA 6. As the natural fiber content increased, the thermal stability of the composites decreased, and thermogravimetric analysis (TGA) showed that the onset temperature of rapid thermal degradation decreased from around 440 (neat PA 6) to 420 °C (20 wt.% natural fiber blend). The addition of 20 wt.% single type fibers showed comparable DSC and TG results to the incorporation of 20 wt.% natural fiber blends.

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“…Brazil, which is one of the most bio-diverse countries on the planet, ranks high in the production of vegetable fibers, such as sisal, ramie, jute, and cotton, among others 1 . 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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Polyamide-6/vegetal fiber composite prepared by extrusion and injection molding

Cited by 106 publications

References 5 publications

Mechanical properties, morphology and thermal degradation of a biocomposite of polypropylene and curaua fibers: coupling agent effect.

Mechanical properties, morphology and thermal degradation of a biocomposite of polypropylene and curaua fibers: coupling agent effect.

Thermal Analysis of Polyamide 6 Composites Filled by Natural Fiber Blend

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

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