USING OF DATE PALM LEAF MIDRIB BIOCHAR AS AN ADSORBANT IN WATER TREATMENT

This study was conducted in Diyala governorate/Iraq during wintering period of the sunn pest from Dece. 2016 to Feb. 2017. Three species of sunn pest was diagnostic. These species are Eurygaster integriceps (Puoton, 1881), E. testudinaria (Geoffory, 1785) and E .maura (len.1758).E .maura was new species recorded to Iraq funna .E. integriceps is The most abundance of the three species hibernated in the fields of the four region of Diyala governorate. The results showed that the three species of genus Eurygaster which diagnostic in Diyala governorate were overwintered as an adults under bushes ,dead leaves, weed ,date palm leaf base .The heights total number of adults(68,56,51 and 44adults/5m2) was found under cogon grass(Imperata cylindrican L.), Bermuda grass(Cyndo dactylon L.),Grape tree(Vitis vinifera L.)and Eucalyptus tree(Eucalyptus spp.) respectively. Higher densities were recorded in Muqdadiyah (200), Balad rooz (193), Kalas (113) and decreased to( 65) adults in Khanakin. Found that the higher percentage for species E. integriceps then followed E. testudinaria finally the species E. maura in all region in Diyala governorate.

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Mechanical, Curing Parameters and Water Absorption of Hybrid Date Palm Leaf-Orange Peel Fibers Reinforced Unsaturated Polyester Composites

Revue des composites et des matériaux avancés ◽

10.18280/rcma.310304 ◽

2021 ◽

Vol 31 (3) ◽

pp. 139-144

Author(s):

Hamza Chelali ◽

Ahmed Meghezzi ◽

Abir Berkouk ◽

Mohamed Toufik Soltani ◽

George Winning

Keyword(s):

Tensile Strength ◽

Date Palm ◽

Moisture Absorption ◽

Natural Fiber ◽

Alkali Treatment ◽

Unsaturated Polyester ◽

Natural Fibers ◽

Orange Peel ◽

Weight Fraction ◽

Palm Leaf

In this study, polymer-hybrid natural fibers composites were prepared using unsaturated polyester resin (UPR) as the matrix and a filler using date palm leaf fiber (DPLF) and orange peel fiber (OPF). The effect of DPLF and OPF on mechanical behavior (tensile strength and elongation at break), moisture absorption, UPR gel time (tgel) and peak exothermic temperature (Tpeak) were determined. The composites of UPR reinforced with DPLF and OPF were processed by hand lay-up technique. The UPR weight fraction was maintained at 90%, and DPLF/OPF proportions varied so that the percentage of natural fiber was 10 wt%. Seven (07) composites were prepared (C1, C2, C3, C4, C5, C6 and C7) with different DPLF:OPF ratios (0:0, 1:0, 0.75:0.25, 0.5:0.5, 0.33:0.67, 0.25:0.75, 0:1) respectively in order to screen the possible interactions. DPLF were surface modified using 6% Alkali treatment, OPF were used without surface modification. Unlike DPLF, OPF showed considerable increase of UPR tgel and Tpeak which act as natural inhibitor. Tensile strength and fracture strength were also impacted negatively and positively depending on the different fiber proportions. Absorption tests showed a decrease in the composites hydrophobicity which increases significantly with higher DPLF proportions.

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Mechanical, Morphological, Thermal and Dynamic Study of Composites of Unsaturated Polyesters-Date Palm Leaf Fiber DPLF

Revue des composites et des matériaux avancés ◽

10.18280/rcma.310602 ◽

2021 ◽

Vol 31 (6) ◽

pp. 317-323

Author(s):

Abir Berkouk ◽

Ahmed Meghezzi ◽

Hamza Chelali ◽

Mohamed Toufik Soltani

Keyword(s):

Alkaline Solution ◽

Chemical Treatment ◽

Date Palm ◽

Fiber Composite ◽

Composite Plates ◽

Scanning Calorimetry ◽

Unsaturated Polyesters ◽

Untreated Fiber ◽

Palm Leaf ◽

Leaf Fiber

In order to improve the properties of unsaturated polyesters, this study discusses the possibilities of developing a natural waste, date palm leaf fiber DPLF, produced in the northern Algerian Sahara, associated with the polymer matrix of a thermosetting polyester resin UP. For this purpose, composite plates containing virgin fiber at rates of 6 and 10% were treated with an alkaline solution of 6% NaOH on the one hand, and a silane compound on the other. In this research, a mechanical study of strength and elongation at break was carried out. In addition, morphological behavior was followed by SEM scanning electron microscopy. ATG thermogravimetric analysis and energy flow were monitored by DSC differential scanning calorimetry. Also, a study of the water absorption capacity has been conducted. In addition, a dynamic mechanical analysis DMA was carried out. The findings of this study show that there is a favorable mechanical behavior for the composites containing the 6% and 10% DPLF fiber, with alkaline NaOH and Silane treatment. They also show that the chemical treatment with alkaline solution and silane gives composites certain thermal stability compared to those with untreated fiber. Findings also explore that the absorption of water by the various composites shows that the chemical treatment promotes some intermolecular associations with water. Findings also show that the storage modulus (E') increases when the composite contains 10% DPLF, treated and untreated, and the maximum value of the tangent moves towards the high temperature for the treated and untreated fiber composite.

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