scholarly journals KESAN PENAMBAHAN HABUK KAYU CENGAL TERHADAP SIFAT KEKERASAN LDPE (Low Density Polyethylene)

2016 ◽  
Vol 4 (1) ◽  
pp. 1-16
Author(s):  
MOHD SOBRI BIN HUSSIN ◽  
SHAMSUDDIN BIN ABDULLAH ◽  
AHMAD FARUDZI BIN AZIB
Keyword(s):  
Mechanical Properties ◽  
Particle Size ◽  
Wood Waste ◽  
Low Density Polyethylene ◽  
Wood Dust ◽  
Low Density ◽  
Test Results ◽  
Natural Materials ◽  
Mixture Samples

AbstrakKajian ini melibatkan Polietelena Berketumpatan Rendah (LDPE) diadun dengan bahan tambah iaituhabuk kayu Cengal (HK). Habuk kayu dapat dimajukan, ini kerana sisa kayu dapat mengurangkankos penggunaan bahan asli dalam pengeluaran. Lantaran itu, kajian dilakukan berhubung dengankekekerasan sesuatu bahan campuran yang dihasilkan. Oleh itu, satu kajian dilakukan bagi menentukankesan penambahan habuk kayu terhadap kekerasan bahan LDPE yang akan dihasilkan. Kajian dilakukandengan melihat kesan ke atas penambahan habuk kayu dengan sifat LDPE tulen. Pemerhatian dilakukanterhadap sifat mekanikal LDPE yang dikurangkan kuantiti jisimnya dengan nisbah penambahan habukkayu sebanyak 3, 6, 9, 12 dan 15 peratus. Habuk kayu diayak menerusi pengayak yang bersaiz 200?m dan ditimbang mengikut campuran penambahan. Sampel dihasilkan menggunakan mesin suntikanpanas bagi tujuan ujian kekerasan. Keputusan ujian dianalisa bertujuan untuk membuat perbandingandengan 100% LDPE dengan peratusan HK yang ditetapkan. Ujian kekerasan secara keseluruhannyameningkat. Peningkatan paling tinggi adalah pada sampel 12% HK iaitu sebanyak 8.2%. Dalam kajianini kekerasan bahan meningkat dengan penambahan HK. Kajian lanjut tentang kekuatan bahan bolehditeruskan melalui penambahan saiz partikel pengisi yang lebih halus.   AbstractThe study involved Low Density Polyethylene (LDPE) blended with additive that is sawdust Cengal (HK).Sawdust can be developed, because wood waste can reduce the use of natural materials in production.Thus, a study was undertaken in relation to the hardness of the produced mixture. Therefore, a study wasconducted to determine the effect of wood dust on he hardness of the produced mixture LDPE material tobe produced. The study was undertaken by looking at the effect of adding the quantity of sawdust to thenature of pure LDPE. Observations were made on the mechanical properties of LDPE when the quantityof mass is reduced by increasing the sawdust ratio from 3 to 6, 9, 12 and 15 percent. Sawdust was siftedthrough a sieve with the size of 200 ?m and weighed by the addition of a mixture. Samples for hardnesstest were produced by using injection hot machine. The test results are analyzed in order to make acomparison with 100 % LDPE with HK prescribed percentage. (It is found that overall, the hardness of theproduced mixture has increase. The highest increase (8.2 %) was shown by the 12%HK sample). In thisstudy, the hardness increased with the addition of HK. Further study of the strength of the material can bepursued through the addition of finer particle size filler.

scholarly journals Toward the development of polyethylene photocatalytic degradation

2020 ◽  
Vol 40 (2) ◽  
pp. 181-191 ◽  
Author(s):  
Parisa Kamalian ◽  
Saied Nouri Khorasani ◽  
Amir Abdolmaleki ◽  
Mehdi Karevan ◽  
Shahla Khalili ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Photocatalytic Degradation ◽  
Zno Nanoparticles ◽  
Photocatalytic Performance ◽  
Nanocomposite Films ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Test Results ◽  
Zno Particles

AbstractIn this research, the photocatalytic degradation performance in a commercial low-density polyethylene (LDPE) film was investigated in the presence of zinc oxide (ZnO) nanoparticles grafted with two amounts of polyacrylamide. Fourier-transform infrared spectroscopy (FTIR) besides thermogravimetric analysis (TGA) test results reinforced the successful grafting of polyacrylamide to the extent of 10 and 39 wt.% on the ZnO nanoparticles. The photocatalytic degradation of the films under ultraviolet (UV) radiation was evaluated by characterizing the mechanical properties, weight loss, and morphology. The UV absorption and emission for ZnO nanoparticles were increased after grafting with 10% polyacrylamide. The tensile strength of the nanocomposite films increased with the incorporation of nanoparticles. The presence of ZnO nanoparticles in LDPE films increased the rate of degradation after 200 h of irradiation. The polyacrylamide grafting improved the dispersion of ZnO particles in LDPE matrix, whereas the increase of grafting extent from 10 to 39 wt.% reduced the photocatalytic performance of ZnO nanoparticles.

Effect of CaCO3 Particle Size and Size Distribution on Rheological and Mechanical Properties of Polyethylene

2013 ◽  
Vol 734-737 ◽  
pp. 2252-2255
Author(s):  
Fang Wei Qi ◽  
Xue Gang Luo ◽  
Xiao Yan Lin ◽  
Si Zhao Zhang
Keyword(s):  
Mechanical Properties ◽  
Thermal Decomposition ◽  
Particle Size ◽  
Glass Transition ◽  
Size Distribution ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Linear Low Density Polyethylene ◽  
Elongation At Break ◽  
Chain Mobility

In this article, calcium carbonate filled linear low density polyethylene (LLDPE) was prepared and the influences of particle size and size distribution on the rheological and mechanical properties of the composites were investigated. The results showed that the glass transition and thermal decomposition temperatures of LLDPE phase in LLDPE/CaCO3composites were shifted toward higher temperatures by the restriction of CaCO3particles on the segmental and long-range chain mobility of the LLDPE phase. The composites showed shear thinning behaviors and the viscosity decreased with the rational size and size distribution. Additionally, the elongation at break notably improved to some extent.

scholarly journals Study of Mechanical Properties of Recycled Polyethylene of High and Low Density

2022 ◽  
Vol 58 (4) ◽  
pp. 210-215
Author(s):  
Antypas Imad Rezakalla ◽  
Savostina Tatiana Petrovna
Keyword(s):  
Mechanical Properties ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Test Results ◽  
Mechanical Recycling ◽  
Mixing Ratios ◽  
Fracture Elongation ◽  
Frequent Use ◽  
The Impact ◽  
Plastics Waste

High and low density polyethylene materials constitute about 48% of total weight of plastics waste in Europe, that depends on the frequent use of these materials in packaging applications. This paper analyze the recycling effect on the mechanical properties of high and low density polyethylene (HDPE and LDPE). A mechanical recycling process was tested for the plastics waste of high and low density polyethylene, then a tensile and impact tests were performed on different mixing ratios for each of the both materials ranging from 100% of the virgin material and up to 100% of the recycled material with a difference of 10% of the sample to the other. This paper discusses the tensile properties of tensile stress at the fracture, elongation and modulus of elasticity and the impact test results for HDPE and LDPE were compared with each other.

scholarly journals Low-Temperature Mechanical Properties of High-Density and Low-Density Polyethylene and Their Blends

Polymers ◽  
2021 ◽  
Vol 13 (11) ◽  
pp. 1821
Author(s):  
Ildar I. Salakhov ◽  
Nadim M. Shaidullin ◽  
Anatoly E. Chalykh ◽  
Mikhail A. Matsko ◽  
Alexey V. Shapagin ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Low Temperature ◽  
Impact Strength ◽  
Relative Elongation ◽  
High Density ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Elongation At Break ◽  
Subzero Temperatures ◽  
Izod Impact

Low-temperature properties of high-density polyethylene (HDPE), low-density polyethylene (LDPE), linear low-density polyethylene (LLDPE), and their blends were studied. The analyzed low-temperature mechanical properties involve the deformation resistance and impact strength characteristics. HDPE is a bimodal ethylene/1-hexene copolymer; LDPE is a branched ethylene homopolymer containing short-chain branches of different length; LLDPE is a binary ethylene/1-butene copolymer and an ethylene/1-butene/1-hexene terpolymer. The samples of copolymers and their blends were studied by gel permeation chromatography (GPC), differential scanning calorimetry (DSC), 13С NMR spectroscopy, and dynamic mechanical analysis (DMA) using testing machines equipped with a cryochamber. It is proposed that such parameters as “relative elongation at break at −45 °C” and “Izod impact strength at −40 °C” are used instead of the ductile-to-brittle transition temperature to assess frost resistance properties because these parameters are more sensitive to deformation and impact at subzero temperatures for HDPE. LLDPE is shown to exhibit higher relative elongation at break at −45 °C and Izod impact strength at −20 ÷ 60 °C compared to those of LDPE. LLDPE terpolymer added to HDPE (at a content ≥ 25 wt.%) simultaneously increases flow properties and improves tensile properties of the blend at −45 °C. Changes in low-temperature properties as a function of molecular weight, MWD, crystallinity, and branch content were determined for HDPE, LLDPE, and their blends. The DMA data prove the resulting dependences. The reported findings allow one to understand and predict mechanical properties in the HDPE–LLDPE systems at subzero temperatures.

Physical and mechanical properties of linear low-density polyethylene/cycloolefin copolymer/layered silicate nanocomposite

2015 ◽  
Vol 37 (11) ◽  
pp. 3167-3174 ◽  
Author(s):  
S. Sánchez-Valdes ◽  
E. Ramírez-Vargas ◽  
L.F. Ramos de Valle ◽  
J.G. Martinez-Colunga ◽  
J. Romero-Garcia ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Layered Silicate ◽  
Physical And Mechanical Properties ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Linear Low Density Polyethylene

scholarly journals Ground tire rubber filled low-density polyethylene: The effect of particle size

2021 ◽  
Author(s):  
Lóránt Kiss ◽  
Dániel Ábel Simon ◽  
Roland Petrény ◽  
Dávid Kocsis ◽  
Tamás Bárány ◽  
...  
Keyword(s):  
Particle Size ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Tire Rubber ◽  
Ground Tire Rubber ◽  
Effect Of Particle Size

Effect of fillers on mechanical properties of recycled low density polyethylene composites under weathered condition

2020 ◽  
Vol 15 (3) ◽  
pp. 44-49
Author(s):  
Ibiyemi A. Idowu ◽  
Olutosin O. Ilori
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Pure Water ◽  
Mechanical Tests ◽  
Filler Loading ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Hardness Property ◽  
Recycled Low Density Polyethylene ◽  
Polyethylene Composites

The study examined the effect of fillers on the mechanical properties of the recycled low density polyethylene composites under weathered condition with a view of managing the generation and disposal of plastic wastes. Discarded pure water sachets and fillers (glass and talc) were sourced and recycled. Recycled low density polyethylene (RLDPE) and preparation of RLDPE/glass, RLDPE/talc and RLDPE/glass/talc composites were carried out using a furnace at compositions of 0 – 40% in steps of 10% by weight. The mixtures were poured into hand-laid mould. The samples produced were exposed to sunlight for eight (8) weeks and their mechanical properties were studied. The results of mechanical tests revealed that tensile strength decreased with increasing filler loading while impact strength and hardness property increased marginally and considerably with increasing filler loading for all the composites respectively. The study concluded that glass and talc were able to reinforce recycled low density polyethylene under weathered condition. Keywords: Recycled Low Density Polyethylene (RLDPE); Fillers; Glass, Talc; Weathering condition; Sunlight; and Mechanical properties; Tensile strength, Impact and hardness

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