scholarly journals High-Yield Lignocellulosic Fibers from Date Palm Biomass as Reinforcement in Polypropylene Composites: Effect of Fiber Treatment on Composite Properties

Polymers ◽  
2020 ◽  
Vol 12 (6) ◽  
pp. 1423
Author(s):  
Chihaoui Belgacem ◽  
Quim Tarres ◽  
Francesc Xavier Espinach ◽  
Pere Mutjé ◽  
Sami Boufi ◽  
...  
Keyword(s):  
Date Palm ◽  
Surface Composition ◽  
Alkali Treatment ◽  
Enzymatic Treatment ◽  
High Yield ◽  
Intrinsic Resistance ◽  
Chemical Surface ◽  
Polypropylene Composites ◽  
Maleated Polypropylene ◽  
Date Palm Fibers

In this work, date palm waste (DPW) stemming from the annual pruning of date palm was used as reinforcing filler in polypropylene (PP) matrix at 40% w/w. Three pre-treatment routes were performed for the DPW, namely (i) defibration, (ii) soft alkali treatment, and (iii) enzymatic treatment, to obtain date palm fibers (DPF) and to investigate the effect of each process on their chemical composition, which will ultimately affect the mechanical properties of the resulting composites. The enzymatic and alkali treatment, combined with maleated polypropylene (MAPP) as a coupling agent, resulted in a composite with higher strength and stiffness than the neat PP. The differences in the reinforcing effect were explained by the change in the morphology of DPF and their chemical surface composition according to the selected treatment of DPW. Enzymatic treatment maximized the tensile strength of the compound as a consequence of an improvement in the interfacial shear strength and the intrinsic resistance of the fibers.

scholarly journals Valorization of Date Palm Waste for Plastic Reinforcement: Macro and Micromechanics of Flexural Strength

Polymers ◽  
2021 ◽  
Vol 13 (11) ◽  
pp. 1751
Author(s):  
Chihaoui Belgacem ◽  
Ferran Serra-Parareda ◽  
Quim Tarrés ◽  
Pere Mutjé ◽  
Marc Delgado-Aguilar ◽  
...  
Keyword(s):  
Flexural Strength ◽  
Date Palm ◽  
Lignin Content ◽  
Specific Property ◽  
High Yield ◽  
Glass Fiber Composites ◽  
Novel Treatments ◽  
Date Palm Fibers ◽  
Date Palm Waste ◽  
Palm Waste

Date palm waste is an abundant agricultural residue in Tunisia and can be used for plastic reinforcement. Moreover, its use in plastic composites can help to reduce dependence on fossil resources for material production. In this work, the valorization of date palm residues was studied by employing high-yield processes following mechanical, chemical, and enzymatical treatments. Fibers obtained by soft chemical treatment with sodium hydroxide and enzymatic treatment with xylanases and pectinases were evaluated for their use in the reinforcement of plastic materials. The flexural strength property, truly relevant for structural, construction, automotive, or other market sectors, was adopted to assess the reinforcing potential of the fibers. Polypropylene was effectively reinforced with date palm fibers (60 wt.%), exhibiting a flexural strength increases of 80% (73.1 MPa), 93% (78.5 MPa), and 106% (83.9 MPa) for mechanical, chemical, and enzymatic fibers, respectively. The different treatments had an impact on the chemical composition of the fibers, and by extension on the final properties of the composites. The holocellulose content could provide good interfacial adhesion using a coupling agent, whereas the lignin content improved the dispersion of the phases. Two interesting outcomes were that the flexural performance of enzymatic fibers was like that of wood composites, whereas the specific flexural strength was comparable to that of glass fiber composites. Overall, the present work has shown the potential behind date palm waste in the composite sector when a specific property or application is desired. Novel treatments have been used for greater fiber compatibility, increasing the sustainability of the process, and improving the applicability of the palm residue.

Comparative Study of Polypropylene Matrix Reinforced with Date Palm Fibers & Date Palm Twigs

2010 ◽  
Vol 123-125 ◽  
pp. 1115-1118
Author(s):  
Ahmad Alawar ◽  
Waseem Ahmed ◽  
Khalifa Al-Kaabi
Keyword(s):  
Mechanical Properties ◽  
Composite Materials ◽  
Date Palm ◽  
Fiber Composite ◽  
Alkali Treatment ◽  
Palm Tree ◽  
Date Palm Fibers ◽  
The Matrix ◽  
Polypropylene Matrix ◽  
Pp Composites

A variety of natural fibers have been on research over the past years to develop alternative echo friendly materials that have comparable performance as their synthetic counter parts for use in composite materials. In this study, two different forms of date palm tree fibers were used as reinforcement materials to develop composite materials with polypropylene (PP) matrix. These two different date palm fibers are namely Date palm fiber (DPF) & Date Palm twigs (DPT). These fibers were surface modified using alkali treatment. Two different Percentages of PP (50%, 75%) were mixed with the each type of fibers to form composite pellets using double screw extruder. The mechanical properties of the different fibers reinforced composite, in treated and untreated condition were investigated. The effect of different weight fraction of Polypropylene matrix reinforced DPF or Twigs fiber composite was investigated. The results indicate that untreated DPF-PP composites possess better mechanical properties compared to all untreated & treated DPT-PP composites. Mechanical interlocking between untreated fibers and the matrix showed some increase in the mechanical properties of the untreated DPF-PP compared to the treated one. In both cases, composites having 75% PP has better mechanical properties than the 50%PP composites. This is due to the lack of compatibility between the fibers and the matrix.

Evaluation Of Qualification Of Substrates Containing Date Palm Fibers ( Leef ) And Sawdust On Quality And Productivity Of Four Pleurotus Spp

2016 ◽  
pp. 1
Author(s):  
مصطفى ناظم عوبد الهيتى ◽  
ساجد صلاح الدين سليم السعدى ◽  
ادهام على عبدالعسافى
Keyword(s):  
Date Palm ◽  
Date Palm Fibers

Extrusion and injection moulding induced degradation of date palm fibre - polypropylene composites

2021 ◽  
pp. 109641
Author(s):  
Sandra Domenek ◽  
Françoise Berzin ◽  
Violette Ducruet ◽  
Cédric Plessis ◽  
Hom Dhakal ◽  
...  
Keyword(s):  
Injection Moulding ◽  
Date Palm ◽  
Polypropylene Composites ◽  
Palm Fibre

scholarly journals Crystallization of TiO2-MoS2 Hybrid Material under Hydrothermal Treatment and Its Electrochemical Performance

Materials ◽  
2020 ◽  
Vol 13 (12) ◽  
pp. 2706
Author(s):  
Katarzyna Siwińska-Ciesielczyk ◽  
Beata Kurc ◽  
Dominika Rymarowicz ◽  
Adam Kubiak ◽  
Adam Piasecki ◽  
...  
Keyword(s):  
Hydrothermal Treatment ◽  
Surface Composition ◽  
Specific Capacity ◽  
Diffraction Method ◽  
Lithium Ion ◽  
Surface Concentration ◽  
Molar Ratio ◽  
Storage Device ◽  
X Ray ◽  
Chemical Surface

Hydrothermal crystallization was used to synthesize an advanced hybrid system containing titania and molybdenum disulfide (with a TiO2:MoS2 molar ratio of 1:1). The way in which the conditions of hydrothermal treatment (180 and 200 °C) and thermal treatment (500 °C) affect the physicochemical properties of the products was determined. A physicochemical analysis of the fabricated materials included the determination of the microstructure and morphology (scanning and transmission electron microscopy—SEM and TEM), crystalline structure (X-ray diffraction method—XRD), chemical surface composition (energy dispersive X-ray spectroscopy—EDS) and parameters of the porous structure (low-temperature N2 sorption), as well as the chemical surface concentration (X-ray photoelectron spectroscop—XPS). It is well known that lithium-ion batteries (LIBs) represent a renewable energy source and a type of energy storage device. The increased demand for energy means that new materials with higher energy and power densities continue to be the subject of investigation. The objective of this research was to obtain a new electrode (anode) component characterized by high work efficiency and good electrochemical properties. The synthesized TiO2-MoS2 material exhibited much better electrochemical stability than pure MoS2 (commercial), but with a specific capacity ca. 630 mAh/g at a current density of 100 mA/g.

The influence of the chemical surface composition on the drying process of milk droplets

2016 ◽  
Vol 27 (6) ◽  
pp. 2324-2334 ◽  
Author(s):  
Martin Foerster ◽  
Thomas Gengenbach ◽  
Meng Wai Woo ◽  
Cordelia Selomulya
Keyword(s):  
Surface Composition ◽  
Drying Process ◽  
Chemical Surface

Influence of morphology and chemical surface composition on electrical conductivity of SiC microspheres

2022 ◽  
Vol 715 ◽  
pp. 121942
Author(s):  
Ilona Pleșa ◽  
Simone Radl ◽  
Uwe Schichler ◽  
Franz Ramsauer ◽  
Werner Ladstätter ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Surface Composition ◽  
Chemical Surface
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