Biocomposites from abaca strands and polypropylene. Part I: Evaluation of the tensile properties

详细信息    查看全文

• 作者：Fabiola Vilaseca ; Alex Valadez-Gonzalez ; Pedro J. Herrera-Franco ; M. À ; ngels Pè ; lach ; Joan Pere Ló ; pez ; Pere Mutjé
• 关键词：Abaca strands ; Polypropylene ; Natural fiber composites ; Interface ; Injection molding
• 刊名：Bioresource Technology
• 出版年：2010
• 出版时间：January 2010
• 年：2010
• 卷：101
• 期：1
• 页码：387-395
• 全文大小：1618 K

文摘

In this paper, abaca strands were used as reinforcement of polypropylene matrix and their tensile mechanical properties were studied. It was found relevant increments on the tensile properties of the abaca strand-PP composites despite the lack of good adhesion at fiber–matrix interface. Afterwards, it was stated the influence of using maleated polypropylene (MAPP) as compatibilizer to promote the interaction between abaca strands and polypropylene. The intrinsic mechanical properties of the reinforcement were evaluated and used for modeling both the tensile strength and elastic modulus of the composites. For these cases, the compatibility factor for the ultimate tensile strength was deduced from the modified rule of mixtures. Additionally, the experimental fiber orientation coefficient was measured, allowing determining the interfacial shear strengths of the composites and the critical fiber length of the abaca strand reinforcement. The mechanical improvement was compared to that obtained for fiberglass-reinforced PP composites and evaluated under an economical and technical point of view.