scholarly journals Effect of Content and Surface Modification of Fique Fibers on the Properties of a Low-Density Polyethylene (LDPE)-Al/Fique Composite

Polymers ◽  
2018 ◽  
Vol 10 (10) ◽  
pp. 1050 ◽  
Author(s):  
Mario Muñoz-Vélez ◽  
Miguel Hidalgo-Salazar ◽  
Jose Mina-Hernández
Keyword(s):  
Surface Modification ◽  
Natural Fibers ◽  
Absorption Capacity ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Direct Function ◽  
Chemical Treatments ◽  
Fique Fibers ◽  
Mechanical Performances

This work presents the physical-thermal and mechanical characterization of a low-density polyethylene (LDPE)-Al matrix composite material that was obtained from reinforcing recycled (post-consumer) long-life Tetra Pak packages with fique natural fibers from southwestern Colombia. The fique was subjected to three chemical treatments to modify its surface (alkalinization, silanization and pre-impregnation with polyethylene) to increase the quality of its interfaces. Additionally, panels with 10%, 20%, and 30% v/v of fiber were manufactured by the hot compression molding. The mechanical properties of the different composite materials showed that the pre-impregnation treatment promoted a significant increase in the tensile and flexural properties with respect to the fiber-reinforced composite without surface modification. Additionally, in materials with 30% fibers that were treated with pre-impregnation, there was a decrease in the water absorption capacity of 53.15% when compared to composites made with 30% native fibers. Finally, increases in the fiber content mainly caused better mechanical performances, which increased as a direct function of the amount of fique incorporated.

scholarly journals The Effect of Polymer Waste Addition on the Compressive Strength and Water Absorption of Geopolymer Ceramics

2021 ◽  
Vol 11 (8) ◽  
pp. 3540
Author(s):  
Numfor Linda Bih ◽  
Assia Aboubakar Mahamat ◽  
Jechonias Bidossèssi Hounkpè ◽  
Peter Azikiwe Onwualu ◽  
Emmanuel E. Boakye
Keyword(s):  
Public Health ◽  
Compressive Strength ◽  
Fracture Surface ◽  
Water Absorption ◽  
Chemical Bonding ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Polymer Waste ◽  
Pull Out

The quantity of polymer waste in our communities is increasing significantly. It is therefore necessary to consider reuse or recycling waste to avoid an increase in the risk to public health. This project is aimed at using pulverized low-density polyethylene (LDPE) waste as a source to reinforce and improve compressive strength, and to reduce the water absorption of geopolymer ceramics (GC). Clay:LDPE composition consisting of 5%, 10%, and 15% LDPE was geopolymerized with an NaOH/Na2SiO3 solution and cured at 30 °C and 50 °C. Characterization of the geopolymer samples was carried out using XRF and XRD. The microstructure was analyzed by SEM and chemical bonding by FTIR. The SEM micrographs showed LDPE particle pull-out on the geopolymer ceramics’ fracture surface. The result showed that the compressive strength increases with the addition of pulverized polymer waste compared to the controlled without LDPE addition. Water absorption decreased with an increase in LDPE addition in the geopolymer ceramics composite.

Shear characterization of CaCO3-filled linear low density polyethylene

1988 ◽  
Vol 27 (2) ◽  
pp. 172-178 ◽  
Author(s):  
S. Ottani ◽  
A. Valenza ◽  
F. P. La Mantia
Keyword(s):  
Low Density Polyethylene ◽  
Low Density ◽  
Linear Low Density Polyethylene

scholarly journals A study of the barrier properties of polyethylene coated with a nanocellulose/magnetite composite film

2016 ◽  
Vol 81 (5) ◽  
pp. 589-605 ◽  
Author(s):  
Nenad Djordjevic ◽  
Aleksandar Marinkovic ◽  
Jasmina Nikolic ◽  
Sasa Drmanic ◽  
Milica Rancic ◽  
...  
Keyword(s):  
Surface Modification ◽  
Maleic Anhydride ◽  
Hybrid Materials ◽  
Significant Contribution ◽  
Barrier Properties ◽  
Chemical Activity ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Oxygen Barrier ◽  
Magnetite Layer

The morphological, thermal and barrier properties of low-density polyethylene/polycaprolactone-modified nanocellulose hybrid materials were investigated in this paper. Nanonocelulose/magnetite (NC-Fe3O4) nanocomposite and maleic acid functionalized NC/magnetite (NCMA-Fe3O4) nanocomposite were prepared and used as filler at various concentrations (5, 10 and 15 wt. %) in polycaprolactone (PCL) layer. PE was coated with PCL/NC/magnetite layer. The addition of the filler did not unfavorably affect the inherent properties of the polymer, especially its barrier properties. Oxygen permeation measurements show that the oxygen barrier properties of magnetite enriched PCL film were improved due to chemical activity of added material. The highest level of barrier capacity was observed for PE samples coated with PCL based composite with NCMA-Fe3O4 micro/-nanofiller, which implies the significant contribution of nanocellulose surface modification with maleic anhydride residue to improved barrier properties.

Oxidative Ageing and Structural Characterization of Naturally Weathered Low Density Polyethylene Films

2020 ◽  
Vol 62 (4) ◽  
pp. 416-426
Author(s):  
N. H. Benmiloud ◽  
S. F. Chabira ◽  
A. H. Bhat ◽  
Y. K. Dasan ◽  
M. Sebaa
Keyword(s):  
Structural Characterization ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Polyethylene Films ◽  
Oxidative Ageing

Characterization of antioxidant low density polyethylene/polyaniline blends prepared via extrusion

2012 ◽  
Vol 135 (2-3) ◽  
pp. 903-911 ◽  
Author(s):  
Ashveen V. Nand ◽  
Sudip Ray ◽  
Jadranka Travas-Sejdic ◽  
Paul A. Kilmartin
Keyword(s):  
Low Density Polyethylene ◽  
Low Density

scholarly journals Influence of Incorporation of Natural Fibers on the Physical, Mechanical, and Thermal Properties of Composites LDPE-Al Reinforced with Fique Fibers

2015 ◽  
Vol 2015 ◽  
pp. 1-8 ◽  
Author(s):  
Miguel A. Hidalgo-Salazar ◽  
Mario F. Muñoz ◽  
José H. Mina
Keyword(s):  
Natural Fibers ◽  
Mechanical And Thermal Properties ◽  
Hot Press ◽  
Scanning Calorimetry ◽  
Aluminum Particles ◽  
Direct Function ◽  
Tetra Pak ◽  
Fique Fibers ◽  
The Impact ◽  
Properties Of Composites

This study shows the effect of the incorporation of natural fique fibers in a matrix formed by low-density polyethylene and aluminum (LDPE-Al) obtained in the recycling process of long-life Tetra Pak packaging. The reinforcement content was 10, 20, and 30% fibers, manufactured by hot-press compression molding of composite boards (LDPE-Al/fique). From the thermogravimetric analysis (TGA) it was determined that the proportions of the LDPE-Al were 75 : 25 w/w. Likewise, it was found that the aluminum particles increased the rigidity of the LDPE-Al, reducing the impact strength compared to LDPE recycled from Tetra Pak without aluminum; besides this, the crystallinity in the LDPE-Al increased with the presence of aluminum, which was observed by differential scanning calorimetry (DSC). The maximum strength and Young’s modulus to tensile and flexural properties increased with the incorporation of the fibers, this increase being a direct function of the amount of reinforcement contained in the material. Finally, a reduction in the density of the compound by the generation of voids at the interface between the LDPE-Al and fique fibers was identified, and there was also a greater water absorption due to weak interphase fiber-matrix and the hydrophilic fibers contained in the material.

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