Preparation and characterization of poly(lactic acid)/sisal fiber bio-composites under continuous elongation flow
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Yongbin Tan
Abstract
In this study, poly(lactic acid) (PLA) matrix bio-composites reinforced with various quantities of sisal fibers (SFs) (from 10% to 50% in weight) were fabricated by using a self-made vane mixer, which can generate continuous elongation flow. The morphology, crystallization, and mechanical properties of PLA/SF bio-composites under continuous elongation flow were investigated. Scanning electron microscopic images showed that SFs were uniformly dispersed in the matrix and oriented along the extrusion direction. Meanwhile, it was found that the diameter of SFs decreased from 250 to 20 μm, which certified that continuous elongation flow remarkably affected the separation of elementary fibers from fiber bundles. Wide-angle X-ray diffraction and differential scanning calorimetry measurements indicated that the addition of SFs promoted the crystallization of PLA as well as increased the crystallinity of PLA. The mechanical tests exhibited that both impact strength and tensile modulus were significantly enhanced (about 64% and 94.63%, respectively) with SFs loading at 40%, which was due to the well dispersion and separation of elementary fibers.
Funding source: National Natural Science Foundation of China
Award Identifier / Grant number: 51435005
Funding source: National Natural Science Foundation of China
Award Identifier / Grant number: 51505153
Funding statement: We acknowledge the Key Program of National Natural Science Foundation of China (grant no. 51435005); the National Instrumentation Program (grant no. 2012YQ230043); the National Key Research and Development Program of China (grant no. 2016YFB0302301); the National Natural Science Foundation of China (grant no. 51505153); the PhD Start-up Fund of Natural Science Foundation of Guangdong Province, China (grant no. 2016A030310429); the Science and Technology Program of Guangzhou, China (grant no. 201607010240); and the Science and Technology Planning Project of Guangdong Province, China (grant nos. 2014B090921006, 2015B090904004).
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Articles in the same Issue
- Frontmatter
- Material properties
- Interpenetrating polymer network adhesive bonding of PEEK to titanium for aerospace application
- NanoSiO2 strengthens and toughens epoxy resin/basalt fiber composites by acting as a nano-mediator
- Structure and properties of PA6-66/γ-aminopropyltriethoxysilane-modified clay nanocomposites prepared by in situ polymerization
- Tribological and mechanical properties of polyamide-11/halloysite nanotube nanocomposites
- Dynamic and creep analysis of polyvinyl alcohol based films blended with starch and protein
- Effect of addition of silicone oil on the rheology of fumed silica and polyethylene glycol shear thickening suspension
- Thermal degradation kinetics of oxo-degradable PP/PLA blends
- Preparation and assembly
- Comparative studies of energy saving polymers and fabrication of high performance transparent polymer by solvent bonding
- Preparation and characterization of poly(lactic acid)/sisal fiber bio-composites under continuous elongation flow
- Graphene oxide modification for enhancing high-density polyethylene properties: a comparison between solvent reaction and melt mixing
- Comparison of two encapsulation systems of UV stabilizers on the UV protection efficiency of wood clear coats
Articles in the same Issue
- Frontmatter
- Material properties
- Interpenetrating polymer network adhesive bonding of PEEK to titanium for aerospace application
- NanoSiO2 strengthens and toughens epoxy resin/basalt fiber composites by acting as a nano-mediator
- Structure and properties of PA6-66/γ-aminopropyltriethoxysilane-modified clay nanocomposites prepared by in situ polymerization
- Tribological and mechanical properties of polyamide-11/halloysite nanotube nanocomposites
- Dynamic and creep analysis of polyvinyl alcohol based films blended with starch and protein
- Effect of addition of silicone oil on the rheology of fumed silica and polyethylene glycol shear thickening suspension
- Thermal degradation kinetics of oxo-degradable PP/PLA blends
- Preparation and assembly
- Comparative studies of energy saving polymers and fabrication of high performance transparent polymer by solvent bonding
- Preparation and characterization of poly(lactic acid)/sisal fiber bio-composites under continuous elongation flow
- Graphene oxide modification for enhancing high-density polyethylene properties: a comparison between solvent reaction and melt mixing
- Comparison of two encapsulation systems of UV stabilizers on the UV protection efficiency of wood clear coats
