scholarly journals Physico-Mechanical, Morphological Properties of Polyvinyl Alcohol/Palm Kernel Shell/Coconut Kernel Shell Elastomeric Polymer Nanocomposites

2018 ◽  
Vol 5 (2) ◽  
pp. 296-303
Author(s):  
Josephine Chang Hui Lai ◽  
Nor Liyana Yusof
Keyword(s):  
Polyvinyl Alcohol ◽  
Polymer Nanocomposites ◽  
Moisture Absorption ◽  
Palm Kernel ◽  
Morphological Properties ◽  
Test Results ◽  
Casting Method ◽  
Palm Kernel Shell ◽  
Coconut Kernel ◽  
Solution Casting Method

In this study, the physico-mechanical and morphological properties of polyvinyl alcohol/palm kernel shell/coconut kernel shell elastomeric polymer nanocomposites (PVA/PKS/CKS EPNCs) were investigated. PVA/PKS/CKS EPNCs were prepared via solution casting method and the properties of the elastomeric polymer nanocomposites were characterized through Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM), tensile testing and moisture absorption test. Test results showed that increasing the PVA content increased the mechanical properties of elastomeric polymer nanocomposites as well as provided better surface morphology. However, beyond certain percentage of PVA content, the moisture absorption increased too. Therefore, 55wt% of PVA/PKS/CKS EPNCs was chosen as the best elastomeric polymer nanocomposites as it had the best overall properties from the aspect of physico-mechanical, morphological and moisture absorption.

Comparison of Starch Fiber Filled-Polyvinyl Alcohol and Native Starch Filled-Polyvinyl Alcohol under Tensile Analysis

2015 ◽  
Vol 1113 ◽  
pp. 19-22 ◽  
Author(s):  
Mohd Salleh Shahrul Nizam ◽  
Norzila Mohd ◽  
Zarina Omar ◽  
Norkamruzita Saadon
Keyword(s):  
Tensile Strength ◽  
Polyvinyl Alcohol ◽  
Interfacial Adhesion ◽  
Continuous Phase ◽  
Distilled Water ◽  
Solution Casting ◽  
Test Results ◽  
Casting Method ◽  
Native Starch ◽  
Solution Casting Method

The tensile properties of starch fiber (SF) and native starch (NS) filled polyvinyl alcohol were investigated in this study. Polyvinyl Alcohol (PVA) was blend with starch fiber as well as native starch. Prior to compounding process, PVA was plasticized with 30 phr glycerol as well as 10 phr distilled water. A solution casting method was used to prepare the SF-PPVA and NS-PPVA film sheet. Based on the tensile test results SF filled PVA recorded the highest tensile strength (20.015 MPa) as compared to NS filled PVA (12.302MPa). The tensile strength of the blends film was depending to the interfacial adhesion between matrixes in the blends. In spite of that, NS filled PVA have noted the highest elongation during the test. SF and NS played important role in affecting the blends matrix through disturbing the arrangement of continuous phase of PVA.

scholarly journals Development of New Material Based on Polyvinyl Alcohol/Palm Kernel Shell Powder Biocomposites

2018 ◽  
Vol 2 (2) ◽  
Author(s):  
Alias Nur Fazreen ◽  
Ismail Hanafi ◽  
Wahab Mohamad Kahar Ab ◽  
Ragunathan Santiagoo ◽  
Ardhyananta Hosta ◽  
...  
Keyword(s):  
Polyvinyl Alcohol ◽  
Palm Kernel ◽  
Palm Kernel Shell ◽  
New Material ◽  
Shell Powder

Mechanical and morphological properties of modified halloysite nanotube filled ethylene-vinyl acetate copolymer nanocomposites

2018 ◽  
Vol 38 (3) ◽  
pp. 271-279 ◽  
Author(s):  
Suvendu Padhi ◽  
P. Ganga Raju Achary ◽  
Nimai C. Nayak
Keyword(s):  
Vinyl Acetate ◽  
Tensile Modulus ◽  
Ethylene Vinyl Acetate ◽  
Crosslinking Density ◽  
Weight Percent ◽  
Halloysite Nanotubes ◽  
Morphological Properties ◽  
Casting Method ◽  
Solution Casting Method ◽  
Acetate Copolymer

AbstractHalloysite nanotubes (HNTs) were modified by γ-methacryloxypropyltrimethoxysilane (γ-MPS) as it interacts with the aluminol and silanol groups of HNTs present at the edges and surfaces of HNTs. The polymer composites were prepared by means of the solution casting method with ethylene-vinyl acetate (EVA) copolymer having 45% vinyl acetate (VA) content with different weight percent of modified HNTs (m-HNTs). The modification of the HNTs by γ-MPS increases the interfacial and inter-tubular interactions and the degree of dispersion of the HNTs within the EVA matrix which manifest from increase in crosslinking density. The mechanical properties such as tensile strength, tensile modulus and tear strength of nanocomposites were found to increase because of m-HNT. The glass transition temperature (Tg) and the crystalline percentage decreases for EVA/m-HNT nanocomposites were due to the strong interaction between EVA matrix and filler. Also, the EVA/m-HNT nanocomposites exhibited better thermal stability due to the strong inter-tubular interaction.

scholarly journals Mechanical and Morphological Properties of Poly-3-hydroxybutyrate/Poly(butyleneadipate-co-terephthalate)/Layered Double Hydroxide Nanocomposites

2013 ◽  
Vol 2013 ◽  
pp. 1-8 ◽  
Author(s):  
Yen Leng Pak ◽  
Mansor Bin Ahmad ◽  
Kamyar Shameli ◽  
Wan Md Zin Wan Yunus ◽  
Nor Azowa Ibrahim ◽  
...  
Keyword(s):  
Layered Double Hydroxide ◽  
Morphological Properties ◽  
Basal Spacing ◽  
Casting Method ◽  
Binary Blend ◽  
Elongation At Break ◽  
Ion Exchange Reaction ◽  
Solution Casting Method ◽  
Coprecipitation Technique ◽  
Double Hydroxide

Nanocomposites of poly-3-hydroxybutyrate/poly(butyleneadipate-co-terephthalate)/layered double hydroxide (PHB/PBAT/LDH) were prepared from a binary blend of PHB/PBAT and stearate-Zn3Al LDH via a solution casting method using chloroform as solvent in this study. The pristine Zn3Al LDH was synthesized from nitrate salts solution at pH 7 by using coprecipitation technique and then was modified by stearate anions surfactant via ion exchange reaction. As a result, the basal spacing of the LDH was increased from 8.77 to 24.94 Å after the modification. Intercalated nanocomposites were formed due to the presence of diffraction peak in XRD diffractograms. The infrared spectrum of stearate-Zn3Al LDH exhibited the existence of stearate anions in the synthesized Zn3Al LDH. Mechanical properties with 2 wt% stearate-Zn3Al LDH loading nanocomposites showed 56 wt% improvements in elongation at break compared to those of the blend.

Effect of Gelatinization on Morphology and Thermal Properties of Polyvinyl Alcohol-Corn Starch Blend Films

2012 ◽  
Vol 724 ◽  
pp. 89-92
Author(s):  
Ji Wei Li ◽  
Xue Gang Luo ◽  
Xiao Yan Lin ◽  
Xian Hong Li
Keyword(s):  
Weight Loss ◽  
Thermal Properties ◽  
Polyvinyl Alcohol ◽  
Corn Starch ◽  
Casting Method ◽  
Scanning Calorimetry ◽  
Blend Films ◽  
Hydrogen Bonding Interactions ◽  
Gelatinized Starch ◽  
Solution Casting Method

The blend films of ungelatinized and gelatinized starch/polyvinyl alcohol (PVA) were prepared by solution casting method. Their morphologies and thermal properties were analyzed by scanning electron microscopy (SEM), differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). A droplet phase was observed in the blends containing ungelatinized starch and a laminated phase was observed in the blends containing gelatinized starch. For both ungelatinized and gelatinized starch/PVA blends the melting temperature (Tm) (210230) of PVA was detected, and the Tm of gelatinized starch/PVA blends was higher than that of the ungelatinized starch/PVA blends. TGA results showed that over the rst 300 the weight loss for ungelatinized starch/PVA blends was higher than that for gelatinized starch/PVA blends, however the gelatinized starch/PVA blends showed the greater weight loss after scanning up to 400. Different morphologies and thermal properties of two types of blends were attributed to the different hydrogen bonding interactions between starch and polyvinyl alcohol.

scholarly journals INCREASED PRODUCTIVITY OF LIQUID SMOKE THROUGH FAST THAWING WITH REFRIGERATION SYSTEMS AT LOW AIR TEMPERATURE

2021 ◽  
pp. 1-6
Author(s):  
Baiti Hidayati ◽  
Riman Sipahutar ◽  
Irwin Bizzy ◽  
Muhammad Faizal
Keyword(s):  
Air Temperature ◽  
Palm Kernel ◽  
Chemical Compounds ◽  
Raw Material ◽  
Condensation Process ◽  
Test Results ◽  
Palm Kernel Shell ◽  
Liquid Smoke ◽  
Cabin Temperature ◽  
The Impact

Liquid smoke increased in demand by the community because it is made from environmentally friendly waste can directly reduce the impact of environmental pollution. The smoke condensing process that is carried out conventionally using water can be continuously replaced using a refrigeration system, the smoke condensation process can be carried out using controlled low-temperature air, this can minimize machine space and energy. In this study, an analysis of variations in air temperature will be carried out to maximize the productivity of liquid smoke. The raw material for palm kernel shell is -4 + 5 mesh with cabin temperature variations of 15-10°C, 10-5°C, and 5-0°C and pyrolysis temperature of 300-400°C. Based on the research results obtained maximum results at a temperature of 5-0°C with 23.6% liquid smoke, 3.7% tar, 63.8% charcoal, and 8.9% gas. Based on the test results of chemical compounds, liquid smoke has an average phenol value of 56.59%. The lower the air temperature used to condense the smoke, the maximum liquid smoke will be and the less gas escapes to the air. It can directly reduce air pollution in the process of making liquid smoke.

scholarly journals Dataset on the microstructure morphology and elemental composition of the palm kernel shell and the coconut kernel shell by TEM/SEM and EDXA/EDS

Data in Brief ◽  
2019 ◽  
Vol 22 ◽  
pp. 336-343 ◽  
Author(s):  
Richard Ntenga ◽  
Etienne Mfoumou ◽  
Alexis Béakou ◽  
Martin Tango ◽  
Jordan Kamga ◽  
...  
Keyword(s):  
Elemental Composition ◽  
Palm Kernel ◽  
Palm Kernel Shell ◽  
Coconut Kernel ◽  
Microstructure Morphology

The Effects of Fiber Content in Plasticized Polyvinyl Alcohol (PVA) - Sweet Potato Peel Blends

2014 ◽  
Vol 699 ◽  
pp. 131-135
Author(s):  
Mohd Shahrul Nizam Salleh ◽  
Norzila Mohd ◽  
Zarina Omar ◽  
Sopiah Ambong Khalid ◽  
Norkamruzita Saadon ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Polyvinyl Alcohol ◽  
Sweet Potato ◽  
Interfacial Adhesion ◽  
Sem Analysis ◽  
Fiber Content ◽  
Test Results ◽  
Potato Peel ◽  
Casting Method ◽  
Melt Mixing

The effects of fiber content in sweet potato peel-plasticized polyvinyl alcohol blends were investigated. Plasticized Polyvinyl Alcohol (PPVA) was blended with Sweet Potato Peel (SPP). Prior to compounding process, PVA was plasticized with 30 phr glycerol as well as 10 phr distilled water. Blends of PPVA at composition of 80%, 70%, 60%, 50% and 40% of SPP were compounded using melt mixing equipment with an additional of 20 phr glycerol. A casting method was used to prepare the PPVA-SPP film sheet. Based on the tensile test results, PPVA with 80% SPP recorded the lowest tensile strength (5.385 MPa) as compared to blends which contain 40% SPP (13.612 MPa). The reduction of tensile strength with the addition of SPP was due to poor interfacial adhesion between the PVA and SPP which was proven by Scanning Electron Microscopy (SEM) analysis.

scholarly journals ENHANCEMENT OF ELECTRICAL CONDUCTIVITY IN POLYVINYL ALCOHOL FILMS BY DOPING WITH Nd3+IONS

2017 ◽  
Vol 5 (4RAST) ◽  
pp. 87-91
Author(s):  
Vijaya Kumar
Keyword(s):  
Electrical Conductivity ◽  
Polyvinyl Alcohol ◽  
Dopant Concentration ◽  
Nitrate Hexahydrate ◽  
X Ray Diffraction ◽  
Casting Method ◽  
Xrd Pattern ◽  
X Ray ◽  
Solution Casting Method ◽  
Polyvinyl Alcohol Films

The electrical properties of polyvinyl alcohol (PVA) films have been improved pronouncedly by doping with Neodymium (III) nitrate hexahydrate.  Pure PVA and PVA: Nd3+ films have been prepared by solution casting method. Both type of films were characterized by X-ray diffraction technique for structural studies. XRD pattern shows the appreciable shift of 2Ө towards higher value with increase in Nd3+ concentration. This signifies the presence Nd3+ dopant in polymer matrix. Further direct current electrical conductivity (σ) of Nd3+ doped PVA films in the temperature range 500C-1600C has been studied using four probe techniques. For a given concentration σ increases with increase in temperature and with dopant concentration. At 1200C, conductivity of PVA: Nd3+ (10 mol %) film is 7.116 μΩ-1cm-1, PVA: Nd3+ (15 mol %) film is 11.176 μΩ-1cm-1, PVA: Nd3+ (20 mol %) film is 17.418 μΩ-1cm-1 and PVA: Nd3+ (25 mol %) film is 23.740 μΩ-1cm-1. This result indicated the enhancement of the electrical conductivity of PVA films with Nd3+ concentration.

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