Development of Alginate Based Active Films Containing Turmeric Essential Oil

2020 ◽  
Vol 861 ◽  
pp. 378-382
Author(s):  
Sophoan Phal ◽  
Muhammad Rafiullah Khan ◽  
Pattarin Leelaphiwat ◽  
Vanee Chonhenchob
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Tensile Strength ◽  
Water Vapor ◽  
Essential Oil ◽  
Sem Analysis ◽  
Film Properties ◽  
Elongation At Break ◽  
Control Film ◽  
Scanning Electron

Sodium alginate based films containing turmeric oil (TEO) at different concentrations (1, 2 and 3%) were developed. The film with no TEO was used as control. Incorporation of TEO had the effects on the film properties. With increasing TEO concentrations, thickness, elongation at break, permeability of oxygen and water vapor of the films significantly (p ≤ 0.05) increased. Whereas moisture content, tensile strength and modulus of elasticity significantly (p ≤ 0.05) decreased. Scanning electron microscopy (SEM) analysis showed more numerous pores and rougher surface of the antifungal films than the control film.

scholarly journals Simultaneous Improvement in the Tensile and Impact Strength of Polypropylene Reinforced by Graphene

2020 ◽  
Vol 2020 ◽  
pp. 1-5
Author(s):  
Li Juan
Keyword(s):  
Electron Microscopy ◽  
Mechanical Properties ◽  
Scanning Electron Microscopy ◽  
Tensile Strength ◽  
Fracture Surface ◽  
Impact Strength ◽  
Melt Blending ◽  
Elongation At Break ◽  
Morphological Behavior ◽  
Scanning Electron

The nanocomposites of polypropylene (PP)/graphene were prepared by melt blending. The effects of the dosage of graphene on the flow and mechanical properties of the nanocomposites were investigated. The morphologies of fracture surfaces were characterized through scanning electron microscopy (SEM). The graphene simultaneous enhanced tensile and impact properties of nanocomposites. A 3.22% increase in tensile strength, 39.8% increase in elongation at break, and 26.7% increase in impact strength are achieved by addition of only 1 wt.% of graphene loading. The morphological behavior indicates the fracture surface of PP/graphene is more rough than that of pure PP.

scholarly journals Effect of modified clays on the structure and functional properties of biofilms produced with zein

2012 ◽  
Vol 32 (2) ◽  
pp. 314-322 ◽  
Author(s):  
Luciana Lopes Tavares ◽  
Crislene Barbosa de Almeida ◽  
Ícaro Putinhon Caruso ◽  
Marinônio Lopes Cornélio ◽  
José Francisco Lopes Filho
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Infrared Spectroscopy ◽  
Water Vapor ◽  
Functional Properties ◽  
Casting Method ◽  
Modified Clays ◽  
Control Film ◽  
Scanning Electron ◽  
Better Than

The purpose of this study was to evaluate changes in the structure and some functional properties of biofilms added with modified clays (Cloisite® 15A and Cloisite® 30B) prepared by the casting method. The analysis of the microstructure of the films, scanning electron microscopy (SEM), Optical microscopy (MO), and Infrared Spectroscopy (FTIR) indicated that the addition of clay in the films resulted in the formation of a heterogeneous microstructure, microcomposite or tactoid. Due to the formation of a microcomposite structure, functional properties of the films added with both clays such as opacity, solubility, and permeability to water vapor (PVA), were not better than those of the control film. Thus, it was concluded that although it is possible to produce a film added with modified clays using the casting method, it was not possible to obtain intercalation or exfoliation in a nanocomposite, which would result in improved functional properties.

scholarly journals PENGARUH LIMBAH ABU PEMBAKARAN BIOMASSA KELAPA SAWIT TERHADAP SIFAT-SIFAT FISIKA DAN MEKANIK HIGH IMPACT POLYSTYRENE

2015 ◽  
Vol 4 (3) ◽  
pp. 23-28
Author(s):  
Fadhilla Asyri ◽  
Kartini Noor Hafni ◽  
A. Haris Simamora
Keyword(s):  
Electron Microscopy ◽  
Mechanical Properties ◽  
Scanning Electron Microscopy ◽  
Tensile Strength ◽  
Impact Strength ◽  
Specific Gravity ◽  
Physical And Mechanical Properties ◽  
High Impact ◽  
Elongation At Break ◽  
Scanning Electron

This study aims was to determine the effect of palm oil fuel ash (POFA) composite as filler on the physical and mechanical properties of high impact polystyrene (HIPS) composites. The research methodology included preparation of raw materials, treatment POFA (hydration process of POFA), mixing using tumbler and then extruder, molding composite specimens, and testing. The variables used were weight ratio of HIPS with 140 mesh POFA at 95/5; 92.5/7.5; 90/10. The composites were tested by Fourier Transform Infrared (FTIR), ash content, specific gravity, tensile strength, elongation at break, impact strength, hardness test, and Scanning Electron Microscopy (SEM). The results of FTIR characterization shows the formation of –OH bonding that was suspected as Si-OH or Si-hydrat. Results of physical and mechanical properties of the composites shows that increase of the filler composition in HIPS-POFA composites until the ratio of 90/10, increase the specific gravity to 7.2% of the original, tensile strength did not change significantly to 28.4 MPa, elongation at break decreased to 2.7%, impact strength decreased to 3.183 KJ/m2, and the hardness increased to 110.5, and Scanning Electron Microscopy (SEM) test show the transformation of POFA structure on treated POFA and intercalation between the matrix and POFA.

The Influence of CB, Silica and CaCO3 on Tensile and Morphological Properties of vPE/rPE/EPDM Blends

2013 ◽  
Vol 594-595 ◽  
pp. 808-811
Author(s):  
Hanafi Ismail ◽  
N.Z. Noimam ◽  
Woon Hon Wei ◽  
Muhammad Ridhwan Jamalul Nasir
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Tensile Strength ◽  
Tensile Properties ◽  
Morphological Properties ◽  
Elongation At Break ◽  
Ethylene Propylene ◽  
Recycled Polyethylene ◽  
Ethylene Propylene Diene Terpolymer ◽  
Scanning Electron

The virgin polyethylene (vPE) and recycled polyethylene (rPE) was melt blended with ethylene propylene diene terpolymer (EPDM) in different ratio by using a Haake Rheomix at 180°C and 50 rpm were prepared. The characterization such as tensile properties and morphology were examined. Results indicated that, the tensile strength and youngs modulus of vPE/rPE/EPDM with CB show the highest value compared to silica and CaCO3 except for elongation at break. The scanning electron microscopy (SEM) studies proved that, better dispersion and less agglomeration of CB and silica filled particles as compared to the CaCO3.

Influence of Nano-Polyaniline Contents on Mechanical Properties of Crosslink Recycled Polypropylene Polyaniline

2015 ◽  
Vol 1125 ◽  
pp. 13-17 ◽  
Author(s):  
Muhamad Rasyidi Husin ◽  
Agus Arsad ◽  
Mohd Shaiful Zaidi Mat Desa ◽  
Mohd Faizal Abdul Rahman
Keyword(s):  
Electron Microscopy ◽  
Mechanical Properties ◽  
Scanning Electron Microscopy ◽  
Tensile Strength ◽  
Morphological Structure ◽  
Dicumyl Peroxide ◽  
Slight Improvement ◽  
Elongation At Break ◽  
Recycled Polypropylene ◽  
Scanning Electron

Crosslink of recycled polypropylene with polyaniline (rPP-PANI) have been prepared via ultrasound extrusion. The concentration of PANI used in the research was varied from 0 to 10 wt% and that of dicumyl peroxide (DCP) was fixed in 1 phr loading of PANI. To examine the morphological structure of the blends, fill emission scanning electron microscopy (FESEM) was conducted. The increasing loading of polyaniline (PANI) has promoted a slight improvement in both elastic modulus and tensile strength at 4 wt% and impact strength at 10 wt%. However elongation at break showed a decrease at all PANI loadings. The FESEM micrograph confirmed good dispersion of nano-PANI on rPP matrix to form crosslinking between rPP matrix and PANI.

In Situ Polymerization Approach to Magnesium Hydroxide-Reinforced PA6 Composites

2011 ◽  
Vol 399-401 ◽  
pp. 457-460
Author(s):  
Li Li Xu ◽  
Yu Hao Deng ◽  
Ye Wang ◽  
Chang Hua Liu ◽  
Sheng Peng Liu
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Tensile Strength ◽  
Magnesium Hydroxide ◽  
In Situ Polymerization ◽  
Polyamide 6 ◽  
Elongation At Break ◽  
Izod Impact ◽  
Scanning Electron

Polyamide 6 (PA6)/magnesium hydroxide (MH) nanoparticles composites have been prepared by in situ polymerization of ε-caprolactam in the presence of pristine MH and γ-aminopropyl-triethoxysilan ( KH550 ) grafted MHs (MMH). Compared with pure PA6, the tensile strength and elongation at break of PA6/MH and PA6/MMH composites shown obvious increasement and attain maximum at loading of 3 wt% MHs. The tensile strength and elongations at break of PA6/MMH composites exhibited notably enhancement contrast with that of PA6/MH composites. Comparing with PA6/MH composites, the izod impact strength of PA6/MMH composites were also improved. Scanning electron microscopy (SEM) shown that MMH particles were homogeneous dispersed in PA6 matrix due to the surface modification of grafting KH550.

The Effect of Different Sizes "Batu Reput" (Dolomite) as a Filler in SMR L and ENR-50

2013 ◽  
Vol 795 ◽  
pp. 383-387 ◽  
Author(s):  
J.N.M. Ridhwan ◽  
N.Z. Noimam ◽  
M.A.A. Mohd Salleh ◽  
S.T. Sam ◽  
L. Musa ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Tensile Strength ◽  
Natural Rubber ◽  
Tensile Properties ◽  
Epoxidized Natural Rubber ◽  
Morphological Properties ◽  
Elongation At Break ◽  
Matrix Interaction ◽  
Scanning Electron

The effects of different sizes of Batu Reput (Dolomite) filler which are smaller size (<63μm) and bigger size (75-150μm) on tensile and morphological properties of Batu Reput (Dolomite) filled SMR L and epoxidized natural rubber (ENR-50) blends were investigated. Results indicated that, the tensile properties, such as tensile strength (TS), elongation at break (Eb) and stress at 100% elongation (M100) of Batu Reput (Dolomite) filled SMR L higher than Batu Reput (Dolomite) filled ENR-50 blends, particularly, at 15 phr of smaller size of Batu Reput (Dolomite). The scanning electron microscopy studies proved, Batu Reput (Dolomite) filled SMR L illustrated a higher Batu Reput (Dolomite) - SMR L matrix interaction compared with Batu Reput (Dolomite) filled ENR-50.

Preparation and Characterization of Polypropylene Biocomposites Reinforced Palm Fruitlet Fiber

2013 ◽  
Vol 795 ◽  
pp. 281-285
Author(s):  
M. Muhammad Safwan ◽  
S.K. Sakhti ◽  
Hui Lin Ong ◽  
Md Akil Hazizan ◽  
M.K. Anis Sofiah ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Tensile Strength ◽  
Interfacial Adhesion ◽  
Smooth Surface ◽  
Filler Content ◽  
Sem Analysis ◽  
The Other ◽  
Scanning Electron

Polypropylene (PP) biocomposite containing 5, 10, 15, 20 and 25wt% of sodium hydroxide treated palm fruitlet fiber (TPFF) were prepared using Z-blade at 180°C at 50rpm. The composite was introduced with 3wt % of maleated anhydride grafted polypropylene (PP-g-MAH) as compatibilizer. The composites were characterized by performing tensile test and scanning electron microscopy (SEM) analysis. Results indicated that, the present of PP-g-MAH improved the tensile strength as the increasing of treated filler content. The improvement properties of the composite were attributed to better interfacial adhesion between the PFF and PP matrix in the presence of the PP-g-MAH. As for the overall results,5wt% TPFF/PP/PP-g-MAH composite shows the highest value tensile strength, 20wt% TPFF/PP/PP-g-MA composite exhibits the highest in Youngs modulus. While from the observation through SEM, the smooth surface fractured of 5wt% TPFF/PP/PP-g-MA which indicated as high rigidity compare to the other ratios.

The Influence of CB, Silica and CaCO3 on Tensile and Morphological Properties of vPE/rPE/EPDM Blends

2013 ◽  
Vol 844 ◽  
pp. 338-341
Author(s):  
Hanafi Ismail ◽  
N.Z. Noimam ◽  
Woon Hon Wei ◽  
Muhammad Ridhwan Jamalul Nasir
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Tensile Strength ◽  
Tensile Properties ◽  
Morphological Properties ◽  
Elongation At Break ◽  
Ethylene Propylene ◽  
Recycled Polyethylene ◽  
Ethylene Propylene Diene Terpolymer ◽  
Scanning Electron

The virgin polyethylene (vPE) and recycled polyethylene (rPE) was melt blended with ethylene propylene diene terpolymer (EPDM) in different ratio by using a Haake Rheomix at 180°C and 50 rpm were prepared. The characterization such as tensile properties and morphology were examined. Results indicated that, the tensile strength and youngs modulus of vPE/rPE/EPDM with CB show the highest value compared to silica and CaCO3 except for elongation at break. The scanning electron microscopy (SEM) studies proved that, better dispersion and less agglomeration of CB and silica filled particles as compared to the CaCO3.

SEM analysis of fish scale cross sections: A technique study

1992 ◽  
Vol 50 (1) ◽  
pp. 744-745
Author(s):  
M.E. Lee ◽  
A. Moller ◽  
P.S.O. Fouche ◽  
I.G Gaigher
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Cross Sections ◽  
Soft Tissues ◽  
Close Association ◽  
Sem Analysis ◽  
Fish Scale ◽  
Fish Scales ◽  
Micro Structures ◽  
Scanning Electron

Scanning electron microscopy of fish scales has facilitated the application of micro-structures to systematics. Electron microscopy studies have added more information on the structure of the scale and the associated cells, many problems still remain unsolved, because of our incomplete knowledge of the process of calcification. One of the main purposes of these studies has been to study the histology, histochemistry, and ultrastructure of both calcified and decalcified scales, and associated cells, and to obtain more information on the mechanism of calcification in the scales. The study of a calcified scale with the electron microscope is complicated by the difficulty in sectioning this material because of the close association of very hard tissue with very soft tissues. Sections often shatter and blemishes are difficult to avoid. Therefore the aim of this study is firstly to develop techniques for the preparation of cross sections of fish scales for scanning electron microscopy and secondly the application of these techniques for the determination of the structures and calcification of fish scales.

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