Pseudo‐ductile behavior of poly(vinyl alcohol) fiber‐reinforced polypropylene
Source abstract
Abstract
Composites based on two different polypropylene (PP) grades reinforced with poly (vinyl alcohol) (PVA) fibers were prepared by compounding and injection molding. Very high residual fiber length values of up to 2,500 μm were achieved. The impact performance of a PP homopolymer can be improved dramatically by reinforcement with the PVA fibers, even below the glass transition temperature of the matrix. For a high impact PP heterophasic copolymer, the fiber reinforcement interferes with the elastomer toughening. Scanning electron microscopy and X‐ray computer‐tomography analysis indicate that the specific composite microstructure has very long, entangled fibers and a low fiber matrix interaction allowing for pseudo‐ductility. Analysis of the micromechanical deformations by volume strain and acoustic emission measurements during tensile testing supports this hypothesis. POLYM. COMPOS., 40:4067–4078, 2019. © 2019 Society of Plastics Engineers
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Research context
OpenAlex topics: Polymer crystallization and properties · Natural Fiber Reinforced Composites · Mechanical Behavior of Composites
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Borealis Polyolefine GmbH, St, Peter Strasse 25, 4021 Linz Austria
University of Applied Sciences Upper Austria, Stelzhamerstraße 23, 4600 Wels Austria
Budapest U. of Technology and Economics, XI. Muegyetem rkp. 3. H ep. I, H‐1111 Budapest
Wood K plus, Division Wood‐Polymer‐Composites, Altenberger Strasse 69, 4040 Linz Austria
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