scholarly journals THE EFFECT OF COMPOSITION OF PLASTIC WASTE LOW DENSITY POLYETHYLENE (LDPE) WITH SAND TO PRESSURE STRENGTH AND DENSITY OF SAND/LDPE COMPOSITES

2019 ◽  
Vol 539 ◽  
pp. 012043 ◽  
Author(s):  
I M Susila ◽  
N P G Suardana ◽  
C I P K Kencanawati ◽  
I N A Thanaya ◽  
I W B Adnyana
Keyword(s):  
Plastic Waste ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Ldpe Composites

Effects of microcrystalline cellulose on the mechanical properties of low-density polyethylene composites

2018 ◽  
Vol 32 (3) ◽  
pp. 297-311 ◽  
Author(s):  
Yousef Ahmad Mubarak ◽  
Raghda Talal Abdulsamad
Keyword(s):  
Mechanical Properties ◽  
Elastic Modulus ◽  
Impact Strength ◽  
Tensile Properties ◽  
Microcrystalline Cellulose ◽  
Weight Fraction ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Ldpe Composites ◽  
The Impact

This work was intended to provide an understanding of the effect of microcrystalline cellulose (MCC) on the mechanical properties of low-density polyethylene (LDPE). The impact resistance and the tensile properties of low-density LDPE/MCC composites were investigated. The weight fraction of MCC was varied at (0, 0.5, 1, 2.5, 5, 10, 20, and 30 wt%). The obtained blends were then used to prepare the required tensile and impact testing samples by hot compression molding technique. It has been found that MCC has a strong influence on the mechanical properties of LDPE. At a low MCC weight fraction, there was a little improvement in the ultimate strength, fracture stress, and elongation at break, but at a high MCC weight fraction, the tensile properties were deteriorated and reduced significantly. The addition of 1 wt% MCC to LDPE enhanced the mentioned properties by 10, 25, and 6%, respectively. While at 30 wt% MCC, these properties were lowered by 36, 25, and 96%. The elastic modulus of LDPE composites was improved on all MCC weight fractions used in the study, at 20 wt% MCC, an increase in the elastic modulus by 12 folds was achieved. On the other hand and compared with the impact strength of pure LDPE, the addition of MCC particles enhanced the impact strength, the highest value obtained was for LDPE composites filled with 10 wt% MCC where the impact strength enhanced by two folds.

scholarly journals Fabrication of raw and oxidized saw dust reinforced low density polyethylene (LDPE) composites and investigation of their physico-mechanical properties

2013 ◽  
Vol 47 (4) ◽  
pp. 365-372 ◽  
Author(s):  
S Sultana ◽  
HP Nur ◽  
T Saha ◽  
M Saha
Keyword(s):  
Mechanical Properties ◽  
Mangifera Indica ◽  
Flexural Modulus ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Electron Micrograph ◽  
Scanning Electron Micrograph ◽  
Saw Dust ◽  
Ldpe Composites ◽  
Scanning Electron

In this research work, cellulosic waste mango (Mangifera indica) saw dust used as the reinforcing material with low density polyethylene (LDPE). A number of samples of saw dust reinforced low density polyethylene (LDPE) composites were prepared by compression moulding technique. In order to improve the mechanical properties of saw dust-LDPE composites, unbleached raw saw dust fibers were modified by oxidation using sodium hypochlorite. FT-IR spectroscopic and scanning electron micrograph (SEM) analyses were done and the results showed the evidence of positive oxidation reaction. The effects of oxidized saw dust on the performance of oxidized saw dust reinforced LDPE composites were studied comparing with the raw saw dust-LDPE composites. The effects of fiber content on the physico-mechanical properties of composites were also studied by preparing the composites with different percentage of fiber loading (from 7.5 wt% to 30 wt%) for each type of composite. Mechanical properties such as tensile strength, tensile modulus, elongation at break, flexural strength, flexural modulus of the resulting composite were measured. Better results were obtained from oxidized saw dust-LDPE composites. Scanning electron micrograph and water absorption tests were carried out for all composites and improved results were found for oxidized saw dust-LDPE composites. Bangladesh J. Sci. Ind. Res. 47(4), 365-372, 2012 DOI: http://dx.doi.org/10.3329/bjsir.v47i4.14065

scholarly journals Compressive Strength and Bulk Density of Concrete Hollow Blocks (CHB) Infused with Low-density Polyethylene (LDPE) Pellets

2020 ◽  
Vol 6 (10) ◽  
pp. 1932-1943
Author(s):  
Alvin Joseph Santos Dolores ◽  
Jonathan David Lasco ◽  
Timothy M. Bertiz ◽  
Kimjay M. Lamar
Keyword(s):  
Compressive Strength ◽  
Bulk Density ◽  
Plastic Material ◽  
The Philippines ◽  
Plastic Waste ◽  
Low Density Polyethylene ◽  
Partial Replacement ◽  
Low Density ◽  
Environment Friendly ◽  
Industry Practice

Infusing plastic waste to concrete and masonry structures is an increasingly common industry practice that has the potential to create an environment-friendly material that can improve some of the material’s properties, craft a novel means to repurpose plastic waste, and reduce the need for mining aggregates in the environment. This concept has been studied extensively in different forms of concrete, as shown by several studies; however, there is a dearth of studies focusing on the incorporation plastic waste in concrete hollow blocks (CHB). In this study, we aim to fill that gap by investigating on the effects of incorporating low-density polyethylene (LDPE), a commonly used plastic material, to CHB on its compressive strength and bulk density. Samples of varying percentages of LDPE replacement by volume (0, 10, 20, 30 and 40%) were fabricated and tested. Results showed a general trend of decreasing compressive strength and bulk density upon increasing the amount of LDPE pellets in CHB, which was also observed in previous studies. However, the compressive strength of CHB increased at 10% LDPE replacement, a result similar to a previous study. It was inferred that the strength of the plastic material could have a direct contribution to the compressive strength of CHB at low percentage of aggregate replacement. Statistical analysis showed that the mix with 10% LDPE pellets as replacement to sand was the best among the samples tested. It was shown that CHB infused with LDPE pellets has a higher compressive strength than what is normally used in the Philippines. It was concluded that based on compressive strength and bulk density, LDPE pellets is a viable material to use as partial replacement to sand in non-load bearing CHB.

Characterization and determination of thermal and radioluminescence properties of low-density polyethylene (LDPE)-(nanozeolite + Y2O3) composite

2019 ◽  
Vol 28 (2) ◽  
pp. 112-118
Author(s):  
Murat Çanlı ◽  
İlker Çetin Keskin ◽  
Murat Türemiş ◽  
Kamil Sirin ◽  
Mehmet İsmail Katı
Keyword(s):  
Low Density Polyethylene ◽  
Low Density ◽  
X Ray Diffraction ◽  
Twin Screw ◽  
Nanocomposite Fibers ◽  
To Come ◽  
Ldpe Composites ◽  
Dispersing Medium ◽  
Extrusion Method

Nanotechnology has become one of the most popular areas of interdisciplinary research. In the vast majority of nanotechnology applications, polymer-based matrices were used as the dispersing medium of nanoparticles. The combination of polymer–zeolite nanocomposite has the potential to come out with the advantages of polymers and zeolites while coping with the deficiencies of both materials. In this study, the synthesis and properties of low-density polyethylene (LDPE) composites with nanozeolite + Y2O3 are investigated. Polyethylene nanocomposite fibers containing nanozeolite + Y2O3 at 5% by mass using a melt extrusion method were composed in a laboratory type twin screw extruder. The thermal properties of the composite fibers were determined by analysis of both thermal gravimetric and differential thermal spectra. Their structural properties were enlightened by scanning electron microscopy, Fourier transform infrared, and ultraviolet absorption. According to the results of X-ray diffraction tests, the samples contain crystals in semicrystalline and α form. The mechanical properties of LDPE matrices increased with the addition of nanoparticles. In addition, radioluminescence properties of the polymer were also improved after composing with nanozeolite and Y2O3.

Biodegradation of Low Density Polyethylene (LDPE) Composite Filled with Cellulose and Cellulose Acetate

2014 ◽  
Vol 896 ◽  
pp. 314-317 ◽  
Author(s):  
Halimatuddahliana ◽  
Ahmad Mulia Rambe
Keyword(s):  
Weight Loss ◽  
Cellulose Acetate ◽  
The Other ◽  
Low Density Polyethylene ◽  
Processing Temperature ◽  
Low Density ◽  
Open Environment ◽  
Ldpe Composites ◽  
Scanning Electron ◽  
Microbial Attack

A comparative study was conducted for the biodegradation of low density polyethylene (LDPE) composites filled with cellulose (C) and cellulose acetate (CA). Composites were prepared with the content of each filler of 10% (by weight) using an extruder at processing temperature of 125°C.Biodegradation processes were done by burying in the soil and by hanging in an open environment for four months. The percentage of weight loss of pure LDPE and composites due to the degradation were observed based on the weight reduction of the composites and supported by scanning electron microscopy (SEM). The results indicated pure LDPE was not susceptible to microbial attack as the percentage of weight loss were constant. However, the composites filled with cellulose were relatively more susceptible to degradation as compared with composites filled cellulose acetate. Here, the percentage of weight loss of composites filled cellulose were higher than the composites filled cellulose acetate. On the other hand, the biodegradation processes by hanging in open environment were relatively faster than burying in soil for both types of composites. These results were confirmed by SEM which have shown some cavities.

scholarly journals Characterization of Nanosilica/Low-Density Polyethylene Nanocomposite Materials

2019 ◽  
Vol 2019 ◽  
pp. 1-8 ◽  
Author(s):  
Malek Alghdeir ◽  
Khaled Mayya ◽  
Mohamed Dib
Keyword(s):  
Composite Films ◽  
Far Infrared ◽  
Tensile Tests ◽  
Optical Measurements ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Melt Mixing ◽  
Ir Radiation ◽  
Ldpe Composites ◽  
Nanosilica Particles

Six ratios of nanosilica particles were employed to fabricate low-density polyethylene (LDPE) composites using melt mixing and hot molding methods. Several composite films with different ratios (0.5, 1, 2.5, 5, 7.5, and 10 wt%) of SiO2 were prepared. The obtained composite films were identified and characterized by Fourier-transform infrared spectroscopy (FTIR) and ultraviolet-visible spectroscopy (UV-VIS). At a specific mixing ratio, far infrared radiation transmittance was prohibited while the ultraviolet-visible transmittance is allowed; this will be explained in detail. Optical measurements show that the composite films prevent the transmission of IR radiation near 9 μm and allow UV-VIS transmission during sun-shining time. The mechanical behaviour of a nanosilica-reinforced LDPE composite was studied using tensile tests. The addition of 1 wt% nanosilica has successfully enhanced the mechanical properties of the LDPE material.

Sign in / Sign up

Export Citation Format

Share Document