Morphological, Mechanical and Thermal Characterization of Intralayer Hybrid Composites Based on Polylactic Acid (PLA) and Sisal Fiber

Novel intralayer hybrid composites (IHC) based on a commercial polylactic acid (PLA) matrix reinforced with a hybrid plain-woven fabric, composed of PLA filaments and sisal fibers, were obtained by film stacking followed by compression molding. Two different stacking configurations were explored. In...

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Bibliographic Details
Published inJournal of natural fibers Vol. 19; no. 14; pp. 7852 - 7863
Main Authors Agaliotis, Eliana M., Morales-Arias, Juan P., Bernal, Celina R.
Format Journal Article
LanguageEnglish
Published Abingdon Taylor & Francis 28.10.2022
Taylor & Francis Ltd
Taylor & Francis Group
Subjects
Compression
Configurations
Fabrics
Fibers
Filaments
Flame retardants
Hybrid composites
intralayer hybrid composites
Lignocellulose
mechanical behavior
Mechanical properties
Morphology
Polylactic acid
Pressure molding
Sisal
sisal fiber
stacking sequence
Stacking sequence (composite materials)
Stiffness
Thermal stability
Thermodynamic properties
Warp
Weft
Woven fabrics
剑麻纤维
力学性能
堆叠顺序
层内混杂复合材料
混杂复合材料
聚乳酸
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Summary:Novel intralayer hybrid composites (IHC) based on a commercial polylactic acid (PLA) matrix reinforced with a hybrid plain-woven fabric, composed of PLA filaments and sisal fibers, were obtained by film stacking followed by compression molding. Two different stacking configurations were explored. In one configuration, weft and warp directions of all fabric layers were equally oriented whereas in the other configuration, weft and warp directions of fabric layers were alternately oriented. The effect of the stacking sequence on the materials morphology and thermal and tensile behavior was investigated. All obtained composites presented higher thermal stability than the matrix due to the presence of the natural fibers and PLA filaments and also, the existence of lignocellulosic compounds in the woven fabric led to a char yield residue, with the expected improvement of flame retardant properties. Although both IHCs exhibited highly anisotropic tensile behavior, the composite having an alternated fabric layers configuration, presented a good balance of stiffness and strength for the two main orthogonal loading directions.
ISSN:1544-0478
1544-046X
DOI:10.1080/15440478.2021.1958417