scholarly journals Mold Invasion on the Surface of Wood/Polypropylene Composites Produced from Aqueous Pretreated Wood Particles, Part 1: Date Palm Midrib

BioResources ◽  
2017 ◽  
Vol 12 (2) ◽  
Author(s):  
Ramadan Nasser ◽  
Maisa M. A. Mansour ◽  
Mohamed Zidan Mohamed Salem ◽  
Hayssam M. Ali ◽  
Ibrahim M. Aref
Keyword(s):  
Date Palm ◽  
Polypropylene Composites ◽  
Wood Particles

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 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 Properties of polypropylene composites filled with a mixture of household waste of mate-tea and wood particles

2014 ◽  
Vol 61 ◽  
pp. 60-68 ◽  
Author(s):  
Bruno D. Mattos ◽  
André L. Misso ◽  
Pedro H.G. de Cademartori ◽  
Edson A. de Lima ◽  
Washington L.E. Magalhães ◽  
...  
Keyword(s):  
Household Waste ◽  
Polypropylene Composites ◽  
Wood Particles ◽  
Mate Tea

Eco-Friendly Constituents for Making Wood-Polymer Composites

2016 ◽  
Vol 688 ◽  
pp. 122-130 ◽  
Author(s):  
Galia Shulga ◽  
Brigita Neiberte ◽  
Anrijs Verovkins ◽  
Jevgenijs Jaunslavietis ◽  
Vadims Shakels ◽  
...  
Keyword(s):  
Polymer Composites ◽  
Laboratory Equipment ◽  
Polypropylene Composites ◽  
Recycled Polypropylene ◽  
Wood Polymer ◽  
Wood Particles ◽  
Wood Polymer Composites ◽  
Soda Lignin ◽  
Lignocellulosic Filler ◽  
Hydrolysis Of

The aim of this work was to obtain eco-friendly constituents for making wood-polymer composites (WPCs) by rational utilisation of hardwood residue with its mechanical processing and purposeful chemical modification. To reduce the energy input for residue milling for obtaining a lignocellulosic filler as well as to activate its surface for the further modification, the optimal parameters of low temperature acid hydrolysis of the hardwood residue under mild conditions were found. To enhance the wetting of the lignocellulosic filler with respect to recycled polypropylene, the milled hydrolysed wood particles were modified by ammoxidation. For obtaining a lignin-containing surface tension regulator (compatibiliser) that is able to reinforce the interaction between the constituents at the interface, soda lignin was obtained via delignification of the hydrolysed hardwood residue under laboratory conditions. The developed compatibiliser represented nanoparticles of a non-stoichiometric polyelectrolyte complex, incorporating soda lignin and synthetic polyamine - polyethylenimine. By using appropriate laboratory equipment and the determined technological regime, aspen wood-recycled polypropylene composites were made and tested.

scholarly journals Study of Mold Invasion on the Surface of Wood/Polypropylene Composites Produced from Aqueous Pretreated Wood Particles, Part 2: Juniperus procera Wood-Branch

BioResources ◽  
2017 ◽  
Vol 12 (2) ◽  
Author(s):  
Maisa M. A. Mansour ◽  
Ramadan A. Nasser ◽  
Mohamed Zidan Mohamed Salem ◽  
Hayssam M. Ali ◽  
Ashraf Hatamleh
Keyword(s):  
Polypropylene Composites ◽  
Wood Particles ◽  
Juniperus Procera

Density Reduction and Electrical Conductivity Induction in Wood Plastic Composites

2013 ◽  
Vol 747 ◽  
pp. 383-386 ◽  
Author(s):  
Asaph Ooi Wei Ern ◽  
Tan Chun Ming ◽  
Krishnan Jayaraman
Keyword(s):  
Electrical Conductivity ◽  
Tensile Strength ◽  
Wood Particle ◽  
Primary Objective ◽  
Wood Plastic Composites ◽  
Polypropylene Composites ◽  
Density Reduction ◽  
Plastic Composites ◽  
Wood Particles ◽  
Chemical Blowing Agents

ncreasing environmental awareness has led to an increase in the usage of wood plastic composites in many countries. The primary objective of this research was the decrease in the density of wood particle-polypropylene composites using chemical blowing agents while retaining their mechanical properties. Different amounts of Azodicarbonamide (0%, 1% and 2% by weight) were mixed with four blends consisting of wood particles (15%, 25%, 35% and 45% by weight), Epolene (2% by weight) and polypropylene and compounded in an extruder. The resulting extrudates were granulated, injection-moulded into specimens and tested for density, tensile strength and impact strength. The secondary objective of this research was the increase in the electrical conductivity of wood particle-polypropylene composites using conducting agents for novel end usages. Different amounts of carbon black (1%, 3%, 5%, 7% and 10% by weight) were mixed with a blend consisting of wood particles (45% by weight), epolene (2% by weight) and polypropylene and compounded in an extruder. The resulting extrudates were granulated, compression-moulded into plates, machined into specimens and tested for electrical conductivity and tensile strength.

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