The influence of alkali treatment on date seeds powder reinforced LLDPE composites: Flexural properties and impact strength

AbstractThis experimental study was conducted to investigate the effect of NaOH concentration and treatment time on the flexural properties ofLuffa cylindricafiber-reinforced epoxy composites. Significant improvement (up to 84.92%) in the flexural properties for the treated fiber composite compared with the untreated fiber composite was observed. Both treated and untreated fiber composites were then subjected to different environmental treatments (saline water, distilled water, and subzero temperature). To find out the changes in flexural strength immediately after treatment, the same test was carried out on the composites. Degradation in the flexural strength of both treated and untreated fiber composites, when subjected to environmental treatments, was observed. They were found within the range of 2%–20% and were found to be least in subzero treatment. The SEM micrograph indicates that alkali treatment is effective in improving the adhesion between the fiber and matrix.

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Mechanical properties of polyester/corn husk fibre composite produced using vacuum infusion technique

Polymers and Polymer Composites ◽

10.1177/09673911211056782 ◽

2021 ◽

Vol 29 (9_suppl) ◽

pp. S1532-S1540

Author(s):

Shibly Shadik Mir Md ◽

Ming Yeng Chan ◽

Seong Chun Koay

Keyword(s):

Mechanical Properties ◽

Fibre Composite ◽

Alkali Treatment ◽

Flexural Modulus ◽

Fibre Length ◽

Flexural Properties ◽

Vacuum Infusion ◽

Corn Husk ◽

Plastic Composite ◽

Polyester Composites

Issues pertaining to deforestation, environmental pollution and natural wastes are increasing day by day. These issues can be resolved by introducing a new composite material, in which natural waste is used as fibre and as a replacement of wood plastic composite. The different lengths (3, 6 and 9 cm) of corn husk fibre filled polyester composites were produced using the vacuum infusion method. Several mechanical properties of these polyester composites, such as tensile and flexural properties, were evaluated. The results revealed that both the tensile and flexural properties of polyester composites increased with increment of corn husk fibre length from 3 to 6 cm. However, the results decreased for 9 cm of fibre length filled composites. Similar trends were recorded after alkali treatment of the corn husk fibre filled polyester composites. The alkali treatment with sodium hydroxide had improved the tensile strength (33%), Young’s modulus (23%), elongation (14%), flexural strength (42%) and flexural modulus (8.5%) of the polyester/corn husk fibre composites with 6 cm of fibre length by enhancing the mechanical interlocking bonding between treated corn husk fibres and polyester.

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Influence of alkali treatment and layering pattern on the tensile and flexural properties of Palmyra palm leaf stalk fiber (PPLSF)/jute fiber polyester hybrid composites

Composite Interfaces ◽

10.1080/15685543.2013.830513 ◽

2013 ◽

Vol 21 (1) ◽

pp. 3-12 ◽

Cited By ~ 8

Author(s):

D. Shanmugam ◽

M. Thiruchitrambalam

Keyword(s):

Hybrid Composites ◽

Alkali Treatment ◽

Jute Fiber ◽

Flexural Properties ◽

Palm Leaf

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Impact Strength and Flexural Properties Enhancement of Methacrylate Silane Treated Oil Palm Mesocarp Fiber Reinforced Biodegradable Hybrid Composites

The Scientific World JOURNAL ◽

10.1155/2014/213180 ◽

2014 ◽

Vol 2014 ◽

pp. 1-8 ◽

Cited By ~ 19

Author(s):

Chern Chiet Eng ◽

Nor Azowa Ibrahim ◽

Norhazlin Zainuddin ◽

Hidayah Ariffin ◽

Wan Md. Zin Wan Yunus

Keyword(s):

Mechanical Properties ◽

Impact Strength ◽

Natural Fiber ◽

Hybrid Composites ◽

Flexural Properties ◽

Melt Blending ◽

Fiber Loading ◽

Hydrophobic Polymer ◽

The Matrix ◽

Water Absorption Test

Natural fiber as reinforcement filler in polymer composites is an attractive approach due to being fully biodegradable and cheap. However, incompatibility between hydrophilic natural fiber and hydrophobic polymer matrix restricts the application. The current studies focus on the effects of incorporation of silane treated OPMF into polylactic acid (PLA)/polycaprolactone (PCL)/nanoclay/OPMF hybrid composites. The composites were prepared by melt blending technique and characterize the composites with Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), and scanning electron microscopy (SEM). FTIR spectra indicated that peak shifting occurs when silane treated OPMF was incorporated into hybrid composites. Based on mechanical properties results, incorporation of silane treated OPMF enhances the mechanical properties of unmodified OPMF hybrid composites with the enhancement of flexural and impact strength being 17.60% and 48.43%, respectively, at 10% fiber loading. TGA thermogram shows that incorporation of silane treated OPMF did not show increment in thermal properties of hybrid composites. SEM micrographs revealed that silane treated OPMF hybrid composites show good fiber/matrix adhesion as fiber is still embedded in the matrix and no cavity is present on the surface. Water absorption test shows that addition of less hydrophilic silane treated OPMF successfully reduces the water uptake of hybrid composites.

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Flexural properties and impact strength of denture base polymer reinforced with woven glass fibers

Dental Materials ◽

10.1016/s0109-5641(99)00097-4 ◽

2000 ◽

Vol 16 (2) ◽

pp. 150-158 ◽

Cited By ~ 89

Author(s):

T Kanie ◽

K Fujii ◽

H Arikawa ◽

K Inoue

Keyword(s):

Impact Strength ◽

Glass Fibers ◽

Flexural Properties ◽

Denture Base ◽

Base Polymer

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Biocomposites from Musa textilis and polypropylene: Evaluation of flexural properties and impact strength

Composites Science and Technology ◽

10.1016/j.compscitech.2010.10.012 ◽

2011 ◽

Vol 71 (2) ◽

pp. 122-128 ◽

Cited By ~ 35

Author(s):

J. Gironès ◽

J.P. Lopez ◽

F. Vilaseca ◽

J. Bayer R. ◽

P.J. Herrera-Franco ◽

...

Keyword(s):

Impact Strength ◽

Flexural Properties

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Preliminary Study of Development of HDPE/EVA/MMT/EFB Nanohybrid Biocomposite by Using Single Screw Extruder

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.493.715 ◽

2014 ◽

Vol 493 ◽

pp. 715-720

Author(s):

Muhammad Syafiq Jainal ◽

Siti Norsyarahah Che Kamarludin ◽

Suffiyana Akhbar ◽

Abdul Rahman Mohd Faizal

Keyword(s):

Impact Strength ◽

Ethylene Vinyl Acetate ◽

Flexural Properties ◽

Screw Extruder ◽

Single Screw ◽

Single Screw Extruder ◽

Izod Impact ◽

Preliminary Study ◽

The Impact ◽

Further Development

This work study the mechanical properties (tensile, flexural and impact) of four different formulation of HDPE/EVA/MMT nanocomposite with present of 1.5 phr compatibilizer as a preliminary study before further development of HDPE/EVA/MMT/EFB nanohybrid biocomposite. The ethylene vinyl acetate (EVA) was varied from 0, 10, 20 and 30 wt%. Meanwhile the nanoclay montmorillonite (MMT) was varied from 0, 0.5, 1.0, 1.5, 2.0, 2.5 and 3.0 phr. HDPE/EVA/MMT ternary blends were prepared by melt extrusion blending technique using a single screw extruder. The result found that in absent of nanoclay MMT, the tensile and flexural properties (strength and modulus) of HDPE/EVA/1.5 phr compatibilizer were decreased as EVA amount are increased. Meanwhile in absent of EVA gave the highest tensile and flexural strength which are 38.53 MPa and 35.02 MPa respectively. However the trend is reciprocal for impact strength. The Izod impact test found that 30 wt% EVA give the highest impact strength which is 103.88 J/m , followed by 20 wt% EVA, 10wt % EVA and 0 wt% EVA which are 59.91 J/m, 38.11 J/m and 30.63 J/m respectively. This is because EVA plays a role as impact modifier. Meanwhile incorporation of nanoclay MMT improved the tensile and flexural properties but reducing the impact properties.

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