scholarly journals A Preliminary Study on Tensile Properties of Gellan Gum/KCF Biocomposite Films

2020 ◽  
pp. 22-28
Author(s):  
Ahmad Adlie Shamsuri ◽  
Khalina Abdan ◽  
Tatsuo Kaneko
Keyword(s):  
Tensile Properties ◽  
Testing Machine ◽  
Weight Ratio ◽  
Tensile Modulus ◽  
Maximum Load ◽  
Gellan Gum ◽  
Test Results ◽  
Biocomposite Films ◽  
Preliminary Study ◽  
Core Fiber

In this preliminary study, kenaf core fiber (KCF) was utilized as a natural filler for the preparation of the gellan gum/KCF biocomposite films. The films were prepared by casting gellan gum solutions containing glycerol and KCF, followed by gelation and drying. The weight ratio of gellan gum and glycerol was fixed at 2:3, while the content of KCF varied from 6 to 15 wt.% relative to the weight of gellan gum. The tensile properties of the prepared films have been determined by using a universal testing machine. The tensile test results demonstrated that the tensile extension and tensile energy at break of the biocomposite films have significantly increased with the incorporation of KCF. Nevertheless, the tensile stress and tensile modulus at maximum load have drastically decreased with the increase of KCF content. This study implied that the incorporation of KCF had enhanced the ductility of the gellan gum/KCF biocomposite films and at the same time, reduced the stiffness of the films.

scholarly journals The Effect of Imidazolium-Based Ionic Liquids on the Tensile Properties of Gellan Gum/KCF Biocomposite Films - A Prelude Study

2021 ◽  
pp. 1-10
Author(s):  
Ahmad Adlie Shamsuri ◽  
Khalina Abdan ◽  
Tatsuo Kaneko
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Tensile Properties ◽  
Testing Machine ◽  
Tensile Modulus ◽  
Gellan Gum ◽  
Mixed Solution ◽  
Test Results ◽  
Biocomposite Films ◽  
Biocomposite Film

In this prelude study, the gellan gum/kenaf core fiber (KCF) biocomposite films were fabricated with the addition of imidazolium-based ionic liquids such as 1-butyl-3-methylimidazolium chloride (Bmim Cl), 1,3-dimethylimidazolium methylsulphate (Dmim MeSO4), 1-ethyl-3-methylimidazolium acetate (Emim Ac), and 1-ethyl-3-methylimidazolium trifluoromethanesulfonate (Emim OTf). The fabrication of the biocomposite films was carried out by mixing KCF and the ionic liquids in an aqueous solution, followed by dissolution of gellan gum in the same solution at a temperature of 90°C. The mixed solution was gelled at room temperature, and the formed gel was dried in an oven at 40°C for 48 hours to obtain a freestanding biocomposite film. The fabricated films were characterized by using a universal testing machine to acquire tensile properties. The tensile test results indicated that the biocomposite film added with Emim Ac possesses a higher tensile extension at maximum (up to 24%) than the biocomposite film without ionic liquid (added with glycerol). In addition, the biocomposite film added with Emim OTf has a higher tensile modulus at maximum (up to 758%) compared to the biocomposite film without ionic liquid. In conclusion, the tensile properties of the gellan gum/KCF biocomposite films can be improved with the addition of Emim-based ionic liquids with different counter anions.

scholarly journals Effect of [C2mim][OTf] Ionic Liquid on Tensile Properties of HDPE/KCF Biocomposites: A Primary Research

2020 ◽  
pp. 1-6
Author(s):  
Ahmad Adlie Shamsuri ◽  
Siti Atiqa Al Zahra Mat Darus
Keyword(s):  
Ionic Liquid ◽  
Tensile Properties ◽  
High Density Polyethylene ◽  
Testing Machine ◽  
Tensile Modulus ◽  
Lower Content ◽  
Primary Research ◽  
Universal Testing ◽  
Core Fiber ◽  
Internal Mixer

In this primary research, 1-ethyl-3-methylimidazolium trifluoromethanesulfonate ionic liquid ([C2mim][OTf]) was added to the high-density polyethylene/kenaf core fiber (HDPE/KCF) biocomposites by using an internal mixer at 150°C, followed by compression molding at the same temperature. The [C2mim][OTf] contents were varied from 0 to 10wt.%. The tensile properties of the prepared biocomposites have been determined by using a universal testing machine. The tensile results of the HDPE/KCF biocomposites indicated that the tensile strength and tensile modulus have decreased with the addition of [C2mim][OTf]. However, the presence of [C2mim][OTf] has significantly increased the tensile extension at break of the biocomposites. This research concluded that the addition of [C2mim][OTf] at the lower content (≈ 10wt.%) could act as a plasticizer for improving the flexibility of HDPE/KCF biocomposites.

Strength of side-to-side and step-cut repairs in tendon transfers: biomechanical testing of porcine flexor tendons

2020 ◽  
Vol 45 (10) ◽  
pp. 1061-1065
Author(s):  
Eivind Strandenes ◽  
Peter Ellison ◽  
Anders O. Mølster ◽  
Nils R. Gjerdet ◽  
Irene O. Moldestad ◽  
...  
Keyword(s):  
Tensile Properties ◽  
Testing Machine ◽  
Biomechanical Testing ◽  
Maximum Load ◽  
Side Group ◽  
Tendon Transfers ◽  
Flexor Tendons ◽  
Active Mobilization ◽  
The Difference

The aim of the study was to compare side-to-side with step-cut repairs to determine how much of the width it is possible to remove and still keep the repair strong enough to start active mobilization. Porcine flexor tendons were used to create side-to-side, one-third step-cut and half step-cut repairs. There were 15 repairs in each group. The tensile properties of the constructs were measured in a biomechanical testing machine. All repairs failed by the sutures splitting the tendon longitudinally. The maximum load and stiffness were highest in the side-to-side group. Our findings suggest that the half step-cut repair can withstand the forces exerted during active unrestricted movement of the digits in tendons of this size. The advantage of the step-cut repair is reduced bulkiness and less friction, which might compensate for the difference in strength.

Corn Cob Filled Chitosan Biocomposite Films

2013 ◽  
Vol 747 ◽  
pp. 649-652 ◽  
Author(s):  
Chan Ming Yeng ◽  
Husseinsyah Salmah ◽  
Sung Ting Sam
Keyword(s):  
Tensile Properties ◽  
Interfacial Adhesion ◽  
Tensile Modulus ◽  
Solvent Casting ◽  
Corn Cob ◽  
Casting Method ◽  
Elongation At Break ◽  
The Poor ◽  
Biocomposite Films ◽  
Scanning Electron

Recently, there has been renews interest in chitosan as materials in producing of biocomposite films. The chitosan (CS)/corn cob (CC) biocomposite films were prepared by solvent casting method. The effect of CC content on tensile properties of CS/CC biocomposite films was studied. The tensile strength and elongation at break of CS/CC biocomposite films decreased as increasing of CC content. However, the increasing of CC content was increased the tensile modulus of CS/CC biocomposite films. Scanning electron microscopy (SEM) was indicated that the deceasing of tensile properties was due to the poor interfacial adhesion between CC filler and CS matrix.

Tensile and Morphological Properties of Low Density Polyethylene/Spear Grass Composites

2013 ◽  
Vol 594-595 ◽  
pp. 715-719 ◽  
Author(s):  
S.T. Sam ◽  
P. Santhiya ◽  
S. Ragunathan ◽  
N.Z. Noriman ◽  
H. Ismail
Keyword(s):  
Natural Rubber ◽  
Tensile Properties ◽  
Morphological Analysis ◽  
Testing Machine ◽  
Tensile Modulus ◽  
Break Point ◽  
Morphological Properties ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Twin Screw

The spear grass content on the tensile properties, morphology of low-density polyethylene (LDPE)/spear grass was investigated. The compatibilising effect of epoxidised natural rubber (ENR 50) LDPE and spear grass was mixed by using twin screw extruder with various spear grass contents. The tensile properties were tested by using an Universal Testing Machine (UTM). The tensile strength and elongation at the break point were significantly improved by the addition of ENR 50, as evidenced by morphological analysis using scanning electron microscopy (SEM). On the other hand, the tensile modulus increased with spear grass content up to 10% and decreased thereafter.Keywords: Epoxidised Natural rubber (ENR), Low Density Polyethylene (LDPE), Spear Grass, Tensile Properties

scholarly journals A Prelude Study on Influence of Hydrophobic Ionic Liquid on Tensile and Impact Properties of HDPE/KCF Biocomposites

2021 ◽  
pp. 60-66
Author(s):  
Ahmad Adlie Shamsuri ◽  
Siti Nurul Ain Md. Jamil ◽  
Khalina Abdan
Keyword(s):  
Ionic Liquid ◽  
Tensile Modulus ◽  
Test Results ◽  
Mixing Process ◽  
Melt Mixing ◽  
Impact Properties ◽  
Universal Testing ◽  
Hydrophobic Ionic Liquid ◽  
Core Fiber ◽  
Internal Mixer

In this prelude study, the high-density polyethylene/kenaf core fiber (HDPE/KCF) biocomposites without and containing hydrophobic ionic liquid, namely 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([Emim][NTf2]), were prepared via melt mixing process. The process was carried out by using an internal mixer at 150°C with a rotor speed of 60 rpm. The prepared biocomposites were molded into sheets through compression molding technique at the same temperature. The molded biocomposites were cut into dumbbell and rectangular shapes for tensile and impact tests, respectively. The tensile and impact properties of the biocomposites were determined by using universal testing and impactor machines, correspondingly. The tensile test results indicated that the biocomposites containing [Emim][NTf2] had low tensile stress and tensile modulus. Nevertheless, the biocomposites possessed high tensile extension and impact strength compared to the biocomposite without [Emim][NTf2]. This study deduced that the presence of the hydrophobic ionic liquid like [Emim][NTf2] significantly influenced the tensile and impact properties of the HDPE/KCF biocomposites.

Alumina Nanoparticles Enhance the Directional Tensile Properties of Glass/Epoxy Composite

2016 ◽  
Vol 25 (1) ◽  
pp. 096369351602500 ◽  
Author(s):  
M Rajanish ◽  
N V Nanjundaradhya ◽  
Ramesh S Sharma ◽  
H K Shivananda
Keyword(s):  
Tensile Strength ◽  
Tensile Properties ◽  
Epoxy Matrix ◽  
Transverse Direction ◽  
Testing Machine ◽  
Tensile Modulus ◽  
Diglycidyl Ether ◽  
Alumina Nanoparticles ◽  
Continuous Variables ◽  
Maximum Enhancement

In this paper, diglycidyl ether of bisphenol A (DGEBA) / triethylene tetramine (TETA) system is used as the starting epoxy matrix and alumina nanoparticles at various concentrations (0.2wt%, 0.4wt%, 0.6wt%, 0.8wt% and 1.0wt%) are employed to modify the epoxy matrix. The UD (unidirectional) glass fibres are used along with the unmodified and modified epoxy resins for fabricating the composite laminates by hand layup process followed by vacuum bagging. The tensile properties of the composite such as tensile strength and tensile modulus are investigated along the longitudinal, transverse direction and also at 45° orientation of fibres using a universal testing machine. From the results, it is found that tensile modulus of the composites was influenced much by the addition nano-fillers while the tensile strength was found to be less altered. Also, the present study showed that nano-modified composites exhibit significantly improved tensile properties along the transverse direction while the properties along the longitudinal direction were not affected much by the nano-fillers due to the dominating effect of the fibres. The maximum enhancement of tensile modulus and tensile strength was found to be 8.85% and 3.72% in the composite having 0.6wt% of alumina nanoparticles in the transverse direction. Further addition of nanoparticles decreased the properties, which were explained with the concept of agglomerations formed by the nanoparticles in the matrix which weakens the mechanical properties. The graphs are employed to explain the results. Hence, to obtain a best possible design, the properties of the fibre reinforced nano-composite laminate at different angles are to be considered as continuous variables in a design process.

scholarly journals Pengaruh Limbah Logam Pada Kuat Tekan Beton

2021 ◽  
Vol 3 (1) ◽  
pp. 58-63
Author(s):  
Dewi Setiawati ◽  
Bambang Jatmika ◽  
Muhammad Rizal Aditya
Keyword(s):  
Compressive Strength ◽  
Coarse Aggregate ◽  
Cylindrical Specimen ◽  
Testing Machine ◽  
Weight Ratio ◽  
Mean Value ◽  
Concrete Mixture ◽  
Test Results ◽  
The Mean ◽  
Average Compressive Strength

This study aims to determine the effects of nickel slag in the concrete mixture and on its compressive strength value. In this study, cylindrical specimen having 15cm diameter and 30cm height is used. We have used nickel slag as substitute of coarse aggregate in weight ratio of 25%, 50% & 100% respectively of coarse aggregate in sample. The ratio of concrete mixture used in this study is comprised of ratio 1:2:3 of cement, sand & gravel respectively. Compressive strength was used as a parameter for testing the samples in this study.             Test was performed using compression Testing machine, from the test results, the mean value of the average compressive strength of cylindrical concrete at the age of 3 days with a 25% variant nickel slag is 134.02 kg / cm2, 50% variant nickel slag is 165.76 kg / cm2, and 70% variant nickel slag is 148.92 kg / cm2, at age 7 days for the 25% is 219.61 kg / cm2, the 50% variant is 191.27 kg / cm2, and the 70% is 181.57 kg / cm2, while at the age of 28 days the 25% is 275.09 kg / cm2, the 50% iis equal to 296.28 kg / cm2, and the 70% is 225.37kg / cm2  

TUNGUM ALLOY

Alloy Digest ◽  
2012 ◽  
Vol 61 (5) ◽  
Keyword(s):  
Corrosion Resistance ◽  
Physical Properties ◽  
Tensile Properties ◽  
Weight Ratio ◽  
High Strength ◽  
Fatigue Properties ◽  
Excellent Corrosion Resistance

Abstract Tungum alloy combines an unusually high strength-to-weight ratio, with ductility, excellent corrosion resistance, and good fatigue properties. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance as well as forming. Filing Code: Cu-806. Producer or source: Tungum Ltd.

HAYNES Ti-3Al-2.5V

Alloy Digest ◽  
2008 ◽  
Vol 57 (1) ◽  
Keyword(s):  
Stainless Steel ◽  
Physical Properties ◽  
Tensile Properties ◽  
Weight Ratio ◽  
Heat Treating ◽  
Hydraulic Systems ◽  
Seamless Tubing

Abstract Haynes Ti-3Al-2.5V alloy is used where the strength/weight ratio is of prime importance; the alloy is 43% lighter than 21-6-9 stainless steel. It is most often used in the form of seamless tubing for aircraft hydraulic systems. This datasheet provides information on composition, physical properties, and tensile properties. It also includes information on forming, heat treating, and joining. Filing Code: TI-145. Producer or source: Haynes International Inc.

Sign in / Sign up

Export Citation Format

Share Document