Impact of silane treatment on the dielectric properties of pineapple leaf/kenaf fiber reinforced phenolic composites

2019 ◽  
Vol 54 (7) ◽  
pp. 937-946 ◽  
Author(s):  
F Agrebi ◽  
H Hammami ◽  
M Asim ◽  
M Jawaid ◽  
A Kallel
Keyword(s):  
Dielectric Properties ◽  
Interfacial Adhesion ◽  
Hybrid Composites ◽  
Silane Treatment ◽  
Dielectric Relaxation Spectroscopy ◽  
Fiber Reinforced ◽  
Kenaf Fiber ◽  
Pineapple Leaf Fiber ◽  
Fiber Matrix ◽  
Leaf Fiber

This work deals with the dielectric properties of silane treated pineapple leaf fiber and kenaf fiber reinforced phenolic hybrid composites. The aim of the present paper is to investigate the effect of silane treatment on the pineapple leaf fiber–kenaf fiber/matrix interfacial adhesion using the dielectric relaxation spectroscopy in the frequency range from 0.1 Hz to 1 MHz and temperature range from 50 to 180℃. Our hybrid composites were fabricated by hand lay-up method at 50% total fiber loading. All the results obtained were discussed in terms of dynamic molecular and interfacial process. Two interfacial polarizations identified as the Maxwell–Wagner–Sillars effect are observed. We note that silane treatment improved the interfacial adhesion between pineapple leaf fiber/kenaf fiber and phenolic resin and it will help to develop high performance kenaf fiber/pineapple leaf fiber reinforced polymer composites for industrial applications. In fact, as known, the silane treatment developed hydrophobic nature in pineapple leaf fiber and kenaf fiber which is very positive for fiber/matrix compatibility.

Mechanical properties and water absorption of kenaf/pineapple leaf fiber‐reinforced polypropylene hybrid composites

2020 ◽  
Vol 41 (4) ◽  
pp. 1255-1264 ◽  
Author(s):  
Ng Lin Feng ◽  
Sivakumar Dhar Malingam ◽  
Chen Wei Ping ◽  
Nadlene Razali
Keyword(s):  
Mechanical Properties ◽  
Water Absorption ◽  
Hybrid Composites ◽  
Fiber Reinforced ◽  
Pineapple Leaf Fiber ◽  
Leaf Fiber

Dielectric Properties of Pineapple Leaf Fiber Reinforced Epoxy Based Composites

2017 ◽  
Vol 730 ◽  
pp. 42-47 ◽  
Author(s):  
Elammaran Jayamani ◽  
Soon Kok Heng ◽  
Muhammad Khusairy bin Bakri
Keyword(s):  
Dielectric Constant ◽  
Dielectric Properties ◽  
Sodium Hydroxide ◽  
Epoxy Composites ◽  
Fiber Reinforced ◽  
Fiber Concentration ◽  
Fiber Loading ◽  
Pineapple Leaf Fiber ◽  
Sodium Hydroxide Treatment ◽  
Leaf Fiber

The present study investigates the dielectric constant, loss factor and dissipation factor of pineapple leaf fiber reinforced epoxy composites as in function of fiber loading, fiber surface modification and frequency. The dielectric properties of the composites were measured using HP 16451 as the dielectric test fixture and was carried out on pineapple leaf fiber reinforced epoxy composites with varying fiber loading (5wt%, 10wt%, 15wt%, and 20wt%) and fiber subjected to sodium hydroxide treatment. It was observed that the dielectric properties of these composites were influenced by fiber loading and sodium hydroxide treatment. The dielectric constant increases with increase of fiber concentration and decrease with the increase of frequency in the case of all composites. It was also observed that the increase of dielectric constant with fiber loading was more significant at low frequency. Due to a reduction in the hydrophilic nature of pineapple leaf fiber brought about by sodium hydroxide treatment the dielectric properties of the composites was less than that of the untreated ones.

scholarly journals Investigation on the Dielectric Properties of Pulverized Oil Palm Frond and Pineapple Leaf Fiber for X-Band Microwave Absorber Application

2014 ◽  
Vol 893 ◽  
pp. 488-491 ◽  
Author(s):  
Elfarizanis Baharudin ◽  
Alyani Ismail ◽  
Adam Reda Hasan Alhawari ◽  
Edi Syams Zainudin ◽  
Dayang L.A. Majid ◽  
...  
Keyword(s):  
Dielectric Constant ◽  
Dielectric Properties ◽  
Oil Palm ◽  
Microwave Absorber ◽  
Band Frequency ◽  
Pineapple Leaf Fiber ◽  
X Band ◽  
Oil Palm Frond ◽  
Palm Frond ◽  
Leaf Fiber

This paper presents the results on dielectric properties of pulverized material based on agricultural waste namely oil palm frond and pineapple leaf fiber for microwave absorber application in the X-band frequency range. The investigation is started by identifying the pulverized materials permittivities and loss tangents using coaxial probe technique, followed by density measurement comprising the determination of bulk and solid densities. Then, by using dielectric mixture model, the solid particle dielectric properties were determined. It is observed that the air properties give quite an effect on the permittivity and loss tangent of the pulverized materials. It is also found that the lower the material density the higher material dielectric constant will be. Furthermore, the results show that, both oil palm frond and pineapple leaf fiber are potential to be X-band absorber with average dielectric constant of 4.40 and 3.38 respectively. The loss tangents for both materials were observed to be more than 0.1 which mark them as lossy materials.

Thermal Properties of the Pineapple Leaf Fiber‐Based Hybrid Composites

2021 ◽  
pp. 107-134
Author(s):  
Bheemappa Suresha ◽  
Rajashekaraiah Hemanth ◽  
Gurumurthy Hemanth
Keyword(s):  
Thermal Properties ◽  
Hybrid Composites ◽  
Pineapple Leaf Fiber ◽  
Leaf Fiber

Effect of benzoyl treatment on the performance of sugar palm/kenaf fiber-reinforced polypropylene hybrid composites

2021 ◽  
pp. 004051752110432
Author(s):  
S Mohd Izwan ◽  
SM Sapuan ◽  
MYM Zuhri ◽  
AR Muhamed
Keyword(s):  
Mechanical Properties ◽  
Mechanical Characteristics ◽  
Hybrid Composites ◽  
Physical And Mechanical Properties ◽  
Morphological Properties ◽  
Fiber Reinforced ◽  
Kenaf Fiber ◽  
A Value ◽  
Hydrophobic Behavior ◽  
Sugar Palm Fiber

The main purpose of this work is to investigate the effect of benzoyl treatment on the performance of sugar palm/kenaf fiber-reinforced polypropylene hybrid composites. Water absorption tests were carried out to confirm the effect of benzoylation treatment toward fabricating a more hydrophobic behavior of the hybrid composites. Both treated and untreated composites that have 10 wt.% of fiber loading with three different fiber ratios between sugar palm and kenaf (7:3, 5:5, 3:7) were analyzed. Physical and mechanical properties such as tensile, flexural, and impact strength were determined from this study. Morphological properties were obtained using scanning electron microscopy (SEM). It was found that the tensile strength of sugar palm/kenaf-reinforced polypropylene hybrid composites was improved with the treatment of benzoyl with a value of 19.41 MPa. In addition, hybrid composite with treated sugar palm and kenaf fiber T-SP3K7 recorded the highest impact and flexural strength of 19.4 MPa and 18.4 MPa, respectively. In addition, SEM demonstrated that surface treatment enhanced the mechanical properties of the hybrid composites. Overall, it can be suggested that benzoyl-treated composites with a higher volume of kenaf fiber than sugar palm fiber will improve the mechanical characteristics of the hybrid composites.

scholarly journals Mechanical, dynamic, and thermomechanical properties of coir/pineapple leaf fiber reinforced polylactic acid hybrid biocomposites

2018 ◽  
Vol 40 (5) ◽  
pp. 2000-2011 ◽  
Author(s):  
Ramengmawii Siakeng ◽  
Mohammad Jawaid ◽  
Hidayah Ariffin ◽  
S. M. Sapuan
Keyword(s):  
Polylactic Acid ◽  
Thermomechanical Properties ◽  
Fiber Reinforced ◽  
Pineapple Leaf Fiber ◽  
Leaf Fiber

Mechanical, chemical and sound absorption properties of glass/kenaf/waste tea leaf fiber-reinforced hybrid epoxy composites

2020 ◽  
pp. 152808372095739 ◽  
Author(s):  
L Prabhu ◽  
V Krishnaraj ◽  
S Gokulkumar ◽  
S Sathish ◽  
MR Sanjay ◽  
...  
Keyword(s):  
Sound Absorption ◽  
Hybrid Composites ◽  
Experimental Studies ◽  
Epoxy Composites ◽  
Fiber Reinforced ◽  
Waste Tea ◽  
Kenaf Fibers ◽  
Tea Leaf ◽  
Absorption Characteristics ◽  
Leaf Fiber

This work aims to investigate the mechanical and sound absorption characteristics of industrial waste tea leaf fiber (WTLF), kenaf and E-glass fiber–reinforced hybrid epoxy composites through experimental studies. The WTLF and kenaf fibers were initially treated with 5% sodium hydroxide. Hybrid composites were fabricated by compression molding technique with a composition of 40 wt.% fiber and 60 wt.% matrix. The fabricated hybrid composites were subjected to mechanical and sound absorption studies as per ASTM standards. Results revealed better mechanical properties in the composites with 25 wt.% kenaf and 5 wt.% WTLF, whereas sound absorption characteristics were better for composites containing 25 wt.% WTLF and 5 wt.% kenaf fiber. The surface morphology of the fractured specimens such as fiber pullout and matrix crack was examined using scanning electron microscopy. Spectrum investigation of alkali-treated hybrid composites showed excellent interfacial bonding between the polymer and fiber compared to the untreated fiber.

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