scholarly journals Study on the effect of modified clay on the properties of high density polyethylene and Vietnamese starch blend

2013 ◽  
Vol 16 (4) ◽  
pp. 34-44
Author(s):  
Mao Dang Nguyen ◽  
Trung Tien Vu ◽  
Huy Thuc Ha ◽  
Nhan Thuc Chi Ha
Keyword(s):  
High Density Polyethylene ◽  
Testing Machine ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Thermal And Mechanical Properties ◽  
X Ray Diffraction ◽  
Electronic Microscopy ◽  
Melting Method ◽  
X Ray ◽  
The Matrix

This study focuses on the preparation of organoclay by intercalating the new kind of modifying agent, monoglyceride (M-Gly), into the Vietnamese Na-saturated montmorillonite (Na-MMT) layers. The modification of clay was conducted in using internal thermo Hakee mixer with high shear rate which gave the obviously expansion of the layer galleries of clay, in having the dspacing more than 60Å showed by X-ray diffraction (XRD). The Low density polyethylene (LDPE)/thermal plastic starch (TPS) blend has been studied to prepare the green nanocomposite material in using the montmorillonite clay as the reinforced phase. The mixtures of LDPE/TPS/ montmorillonite nanocomposites have been elaborated by melting method at 1600C in 5 minutes. The nanocomposite morphology was investigated by X-Ray Diffraction (XRD) and Transmission Electronic Microscopy (TEM), and the results have shown the good dispersion of clay in the matrix polymer blend. As result, the thermal and mechanical properties of material are also enhanced when the claywas added. By mechanical testing machine showed tensile strength and modules of the mixture increased and good result in 3%wt of organoclay, which have shown interface adhesion between components so good in mixture

scholarly journals Effect of Crystallinity of Polyethylene with Different Densities on Breakdown Strength and Conductance Property

Materials ◽  
2019 ◽  
Vol 12 (11) ◽  
pp. 1746 ◽  
Author(s):  
Dawei Li ◽  
Liwei Zhou ◽  
Xuan Wang ◽  
Lijuan He ◽  
Xiong Yang
Keyword(s):  
Field Strength ◽  
Continuous Improvement ◽  
High Density Polyethylene ◽  
Breakdown Strength ◽  
Characteristic Curve ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Linear Low Density Polyethylene ◽  
X Ray Diffraction ◽  
X Ray

In order to study the effects of the crystallinity of polyethylene with different densities on breakdown strength and conductance properties, this paper mainly tests the X-ray diffraction (XRD), different scanning calorimeter (DSC), direct current (DC) breakdown and conductance properties of low-density polyethylene (LDPE), linear low density polyethylene (LLDPE), medium density polyethylene (MDPE), and high-density polyethylene (HDPE), and further analyzes the experimental results separately. The results show that an increase in the density of polyethylene leads to the continuous improvement of crystallinity, and an increase in crystallinity causes a significant decrease in the conduction current at the same field strength. The field strength corresponding to the two turning points in the conductance characteristic curve increases simultaneously.

Influence of organoclay filler and dicumyl peroxide (DCP) on the properties of the low-density polyethylene (LDPE)/thermoplastic starch (TPS) blend

2020 ◽  
pp. 096739112097627
Author(s):  
Dalila Smail ◽  
Saliha Chaoui
Keyword(s):  
Thermoplastic Starch ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Dicumyl Peroxide ◽  
X Ray Diffraction ◽  
Scanning Calorimetry ◽  
X Ray ◽  
Force Microscopy ◽  
Atomic Force ◽  
The Impact

In this study low-density polyethylene (LDPE)/thermoplastic starch (TPS)/nanoclay (O-Mt) nanocomposites were prepared by a melt blending process using a Brabender mixer. Dicumyl peroxide (DCP) and nanoclay (O-Mt) were studied to improve interfacial adhesion and to obtain the various desired properties of the nanocomposites. The structure and properties of the materials were studied by X-Ray Diffraction (XRD), Differential Scanning Calorimetry (DSC), Thermogravimetric Analysis (TGA), Scanning Electron Microscopy (SEM), Atomic Force Microscopy (AFM) and by tensile and Izod impact tests. X-ray diffraction analysis of the nanocomposites showed that the characteristic peaks of the clay were shifted to the lower angles, indicating an intercalated structure in the presence of dicumyl peroxide (DCP). The TGA curve indicated an improvement in the thermal stability of the materials with the amount of silicate and DCP. The mechanical properties of the materials were improved as a consequence of the increase in phase adhesion which gave an improvement in crystallinity confirmed by DSC. In addition, the impact strength of the modified materials was improved compared to the original materials. A modification of morphology as well as roughness was demonstrated by SEM and AFM.

Preparation of Linear Low-Density Polyethylene-g-Poly(Acrylic Acid)-Co-Starch Hydrogel

2014 ◽  
Vol 1024 ◽  
pp. 163-166
Author(s):  
Maryam Irani ◽  
Hanafi Ismail ◽  
Zulkifli Ahmad
Keyword(s):  
Acrylic Acid ◽  
Low Density Polyethylene ◽  
Water Absorbency ◽  
Low Density ◽  
Linear Low Density Polyethylene ◽  
Electron Micrograph ◽  
X Ray Diffraction ◽  
Scanning Electron Micrograph ◽  
X Ray ◽  
Maximum Water

In this work, a type of hydrogel from waste linear low density polyethylene (LLDPE), acrylic acid (AA), and starch was prepared using N, N-methylenebisacrylamide (MBA) as the crosslinker, and benzoyl peroxide as the initiator. The hydrogel was characterized by Fourier transform infrared spectroscope (FTIR), scanning electron micrograph (SEM), and X-ray diffraction (XRD). The results confirmed the incorporation of acrylic acid and starch in the LLDPE chain. SEM results show that the prepared hydrogel has a porous structure. Product showed maximum water absorbency of 180 g/g in distilled water.

scholarly journals The influence of process conditions on the formation of thallium sulfide layers on polyethylene by the use of higher polythionic acid H2S33O6

2013 ◽  
Vol 11 (4) ◽  
pp. 629-635 ◽  
Author(s):  
Ingrida Bružaitė ◽  
Vitalijus Janickis
Keyword(s):  
Low Density Polyethylene ◽  
Process Conditions ◽  
Low Density ◽  
Sulfur Concentration ◽  
X Ray Diffraction ◽  
X Ray ◽  
Atomic Force ◽  
Sulfate Solutions ◽  
Sulfurization Time ◽  
Scanning Electron

AbstractThallium sulfide layers of varying composition form on the surface of low-density polyethylene (PE) when the PE films have been sulfurized in a solution of higher polythionic acid H2S33O6, and then immersed in the alkaline solution of thallium (I) sulfate. The concentration of sulfur sorbed-diffused into PE surface increases with the increase of the sulfurization time and concentration of higher polythionic acid solution. The concentration of thallium in the Tlx Sy layers depends on the sulfur concentration sorbed-diffused into PE, the concentration, and temperature of thallium (I) sulfate solutions. By chemical analysis of the obtained sulfide layers it was determined that the values of x and y in the TlxSy layers varies in the intervals: 1xy2S2 were identified by X-ray diffraction analysis in thallium sulfide layers. Scanning Electron (SEM) and Atomic Force (AFM) microscopies were used to characterize surface morphology of thallium sulfide layers. The films deposited on the PE surface have a non-homogeneous structure, and consist of separated islands.

Oxidized Wax as Compatibilizer in Linear Low-Density Polyethylene-Clay Nanocomposites: X-ray Diffraction and Dynamic Mechanical Analysis

2008 ◽  
Vol 8 (4) ◽  
pp. 1886-1894 ◽  
Author(s):  
V. G. Geethamma ◽  
Adriaan S. Luyt
Keyword(s):  
Loss Modulus ◽  
Mechanical Analysis ◽  
Low Density Polyethylene ◽  
Clay Nanocomposites ◽  
Low Density ◽  
Linear Low Density Polyethylene ◽  
X Ray Diffraction ◽  
X Ray ◽  
Dynamic Mechanical ◽  
Storage And Loss Moduli

Oxidized paraffin wax was used as a compatibilizer in composites of linear low-density polyethylene and layered nano silicate clays. X-ray diffraction analyses were carried out to investigate the crystalline morphology of five types of clays, oxidized wax, and their composites with LLDPE. The composites exhibited different X-ray diffraction and dynamic mechanical behaviour in the presence of different clays. Generally, the composites retained the partially crystalline behaviour of LLDPE, and no exfoliation was observed. Increased amount of wax did not change the morphology in most cases. The incorporation of clay resulted in an observable increase in the storage modulus of LLDPE. These values also increased with the addition of oxidized wax for most of the composites. The loss modulus increased with the amount of clay, irrespective of its nature. In most cases these values also increased with the incorporation of wax. The composites with 10% clay and 10% oxidized wax showed the highest storage and loss moduli, irrespective of the nature of the clay. The tan δ values did not change considerably with the addition of clay or wax.

Sign in / Sign up

Export Citation Format

Share Document