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

It is not common to accompany material development by a Life Cycle Assessment (LCA) during the research and development phase. It is the aim of the study at hand to present environmental aspects of the manufacturing of different polypropylene composites by injection moulding in comparison to the neat polypropylene. The process analysis following two injection-moulding experiments revealed that the total specific energy consumption of injection moulding of seven different materials and on different scales ranges from 1.6 MJ/kg to 3.5 MJ/kg. On the level of an ex-ante LCA from cradle-to-factory gate, injection moulding can be rated from being a negligible to an important contributor.

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04/01946 Date palm fibre reinforced composite as a new insulating material

Fuel and Energy Abstracts ◽

10.1016/s0140-6701(04)94533-x ◽

2004 ◽

Vol 45 (4) ◽

pp. 269-270

Keyword(s):

Date Palm ◽

Insulating Material ◽

Reinforced Composite ◽

Palm Fibre

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

Polymers ◽

10.3390/polym12061423 ◽

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.

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Selected Properties and Shrinkage Compensating Effect by Injection Moulding of Origin and Recycled Thermoplastic Composites with Polypropylene (PP) Matrix, Talcum and Glass Fiber

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1001.187 ◽

2014 ◽

Vol 1001 ◽

pp. 187-193 ◽

Cited By ~ 2

Author(s):

Aneta Krzyżak ◽

Marcin Drabik ◽

Łukasz Zyśko ◽

Ľudmila Dulebová

Keyword(s):

Tensile Strength ◽

Glass Fiber ◽

Injection Moulding ◽

Thermoplastic Composites ◽

Recycling Process ◽

Polypropylene Composites ◽

Shrinkage Effect ◽

Molded Parts ◽

Injection Molded ◽

Transverse Shrinkage

This article explains and demonstrates how to first and second injection moulding influence to shrinkage effect of polypropylene composites with talcum and cutting glass fiber. Results show that the longitudinal and transverse shrinkage changed by differend parameters of injection moulding. It was observed shrinkage compensating effect occurring at composite molded parts with a high glass fiber content. Recycling process has reduced the shrinkage and tensile strength. Caused an increase in elongation, but it has not noticed any major changes in the hardness of injection molded parts.

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