Hybrid siliconized–epoxidized EPDM/polyurethane (eEPDM-g-APTES/HTPDMS/PU) matrices for potential application in cable insulation

2019 ◽  
Vol 28 (8-9) ◽  
pp. 589-597
Author(s):  
Manokaran Vadivel ◽  
Moses Suresh Chandra Kumar ◽  
Jabbar Abbas Mohaideen ◽  
Muthukaruppan Alagar ◽  
Murugesan Sankarganesh ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Young’S Modulus ◽  
High Performance ◽  
Young's Modulus ◽  
Morphological Properties ◽  
Scanning Calorimetry ◽  
Experimental Conditions ◽  
Elongation At Break ◽  
Morphological Studies ◽  
Percentage Concentration

Hybrid matrices (epoxidized of ethylene–propylene–diene monomer (eEPDM) -g-aminopropyltriethoxysilane (APTES)/hydroxyl terminated polydimethylsiloxane (HTPDMS)/polyurethane (PU)) were developed based on eEPDM with 3-APTES coupling agent and varying weight percentages (0.75, 1.50, 2.25, and 3.00 wt%) of PU prepolymer as coreactant using 7.5 wt% of HTPDMS as chain extender using suitable experimental conditions. The formation of hybrid matrices and their structure were characterized by Fourier transform infrared (FTIR). The thermal and morphological properties of the hybrid matrices were analyzed using differential scanning calorimetry and scanning electron microscope, respectively. Mechanical properties (tensile strength, elongation at break (%), Young’s modulus, and hardness) were characterized as per ASTM standards. Data resulted from mechanical studies, it was noticed that the incorporation of 3-APTES, HTPDMS, and PU into eEPDM has improved the elongation at break (%) and lowered the values of tensile strength, Young’s modulus, and hardness according to the percentage concentration. Morphological studies indicate the presence of heterogeneous morphology. Data obtained from different studies, it suggested that the hybrid matrices developed in the present work can be used as cable insulates for high-performance industrial and engineering applications.

Effects of APS Silane on Tensile Properties of Polypropylene (PP)/Recycled Acrylonitrile Butadiene Rubber (NBRr)/Banana Skin Powder (BSP) Composites

2016 ◽  
Vol 1133 ◽  
pp. 180-184
Author(s):  
Azlinda Abdul Ghani ◽  
Ragunathan Santiagoo ◽  
Tunku Alisha Zanariah Tunku Ozir ◽  
Sam Sung Ting ◽  
Hanafi Ismail
Keyword(s):  
Tensile Strength ◽  
Young’S Modulus ◽  
Coupling Agent ◽  
Young's Modulus ◽  
Filler Loading ◽  
Butadiene Rubber ◽  
Elongation At Break ◽  
Acrylonitrile Butadiene Rubber ◽  
Morphological Studies ◽  
Roll Mill

Polypropylene (PP)/ recycled acrylonitrile butadiene rubber (NBRr)/ banana skin powder (BSP) composites with different BSP filler loading (5,10,15,20,25,30wt. %) were studied. Composites were prepared by using heated two roll mill at 180 °C. The effect of 3-aminopropyltrimethoxysilane (APS) as coupling agent were evaluated. Mechanical properties such as tensile strength, Young’s Modulus and Elongation at Break (Eb) of the different composites were investigated. Tensile strength and Elongation at break of the composites were found to be decreasing with increasing BSP filler loading. The Young’s Modulus was found to be increasing with BSP filler loading due increment of composite rigidity. At similar BSP filler loadings, γ-APS treated BSP composites shows higher tensile strength and Young’s Modulus. This may due to strong bonding between BSP filler and PP/NBRr matrices in the presence of APS silane coupling agent. The morphological studies strongly support this findings whereby good interaction and less pull outs of BSP filler was noticed in the presence of APS silane.

Effect of Castor Oil Impregnation on the Physical and Mechanical Properties of Bacterial Cellulose

2012 ◽  
Vol 3 (1) ◽  
pp. 13-26
Author(s):  
Myrtha Karina ◽  
Lucia Indrarti ◽  
Rike Yudianti ◽  
Indriyati
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Bacterial Cellulose ◽  
Young’S Modulus ◽  
Castor Oil ◽  
Young's Modulus ◽  
Physical And Mechanical Properties ◽  
Scanning Electron Micrographs ◽  
Elongation At Break ◽  
Acetone Water

The effect of castor oil on the physical and mechanical properties of bacterial cellulose is described. Bacterial cellulose (BC) was impregnated with 0.5–2% (w/v) castor oil (CO) in acetone–water, providing BCCO films. Scanning electron micrographs revealed that the castor oil penetrated the pores of the bacterial cellulose, resulting in a smoother morphology and enhanced hydrophilicity. Castor oil caused a slight change in crystallinity indices and resulted in reduced tensile strength and Young's modulus but increased elongation at break. A significant reduction in tensile strength and Young's modulus was achieved in BCCO films with 2% castor oil, and there was an improvement in elongation at break and hydrophilicity. Impregnation with castor oil, a biodegradable and safe plasticiser, resulted in less rigid and more ductile composites.

A UNIQUE APPROACH TO EXPERIMENTAL CHARACTERIZATION OF A THERMOSETTING POLYMER MATRIX FOR ICME FRAMEWORKS

2021 ◽  
Author(s):  
MICHAEL N. OLAYA ◽  
SAGAR PATIL ◽  
GREGORY M. ODEGARD ◽  
MARIANNA MAIARÙ
Keyword(s):  
Tensile Strength ◽  
Young’S Modulus ◽  
Young's Modulus ◽  
Cure Kinetics ◽  
Image Correlation ◽  
Scanning Calorimetry ◽  
Mixing Ratios ◽  
Fitting Procedure ◽  
Amine Content

A novel approach for characterization of thermosetting epoxy resins as a function of the degree of cure is presented. Density, cure kinetics, tensile strength, and Young’s modulus are experimentally characterized across four mixing ratios of DGEBF/DETDA epoxy. Dynamic differential scanning calorimetry (DSC) is used to characterize parameters for a Prout-Thompkins kinetic model unique to each mixing ratio case through a data fitting procedure. Tensile strength and Young’s modulus are then characterized using stress-strain data extracted from quasi-static, uniaxial tension tests at room temperature. Strains are measured with the 2-D digital image correlation (DIC) optical strain measurement technique. Strength tends to increase as amine content use in the formulation increases. The converse trend is observed for Young’s modulus. Density measurements also reveal an inverse relationship with amine content.

Tensile and water absorption properties of solvent cast biofilms of sugarcane leaves fibre-filled poly(lactic) acid

2018 ◽  
Vol 33 (3) ◽  
pp. 289-304 ◽  
Author(s):  
Kuhananthan Nanthakumar ◽  
Chan Ming Yeng ◽  
Koay Seong Chun
Keyword(s):  
Tensile Strength ◽  
Lactic Acid ◽  
Water Absorption ◽  
Young’S Modulus ◽  
Young's Modulus ◽  
Poly Lactic Acid ◽  
Infrared Analysis ◽  
Absorption Properties ◽  
Elongation At Break ◽  
Bleaching Treatment

This research covers the preparation of poly(lactic acid) (PLA)/sugarcane leaves fibre (SLF) biofilms via a solvent-casting method. The results showed that the tensile strength and Young’s modulus of PLA/SLF biofilms increased with the increasing of SLF content. Nevertheless, the elongation at break showed an opposite trend as compared to tensile strength and Young’s modulus of biofilms. Moreover, water absorption properties of PLA/SLF biofilms increased with the increasing of SLF content. In contrast, the tensile strength and Young’s modulus of biofilms were enhanced after bleaching treatment with hydrogen peroxide on SLF, but the elongation at break and water absorption properties of bleached biofilms were reduced due to the improvement of filler–matrix adhesion in biofilms. The tensile and water properties were further discussed using B-factor and Fick’s law, respectively. Furthermore, the functional groups of unbleached and bleached SLF were characterized by Fourier transform infrared analysis.

Mechanical Properties of Herbal Patches from Chitosan-Based Polymer Blends for Medical Applications

2018 ◽  
Vol 917 ◽  
pp. 52-56
Author(s):  
Jirapornchai Suksaeree
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Ultimate Tensile Strength ◽  
Polymer Blends ◽  
Young’S Modulus ◽  
Young's Modulus ◽  
Hydroxypropyl Methylcellulose ◽  
Peel Strength ◽  
Elongation At Break ◽  
Zingiber Cassumunar

Recently, Thai herbs are widely used as medicine to treat some illnesses. Zingiber cassumunar Roxb., known by the Thai name “Plai”, is a popular anti-inflammatory, antispasmodic herbal body and muscle treatment. This research aimed to prepare herbal patches that incorporated the 3 g of crude Z. cassumunar oil. The herbal patches made from different polymer blends were 2 g of 3.5%w/v chitosan and 5 g of 20%w/v hydroxypropyl methylcellulose (HPMC), or 2 g of 3.5%w/v chitosan and 5 g of 20%w/v polyvinyl alcohol (PVA) using 2 g of glycerin as a plasticizer. They were prepared by mixing all ingredients in a beaker and produced by solvent casting method in hot air oven at 70±2oC. The completed herbal patches were evaluated for their mechanical properties including Young’s modulus, ultimate tensile strength, elongation at break, T-peel strength, and tack adhesion. The thickness of blank and herbal patches was 0.263-0.282 mm and 0.269-0.275 mm, respectively. Young’s modulus, ultimate tensile strength, elongation at break, T-peel strength, and tack adhesion were 104.73-142.71 MPa, 87.92-93.28 MPa, 154.39-174.98 %, 3.43-4.88 MPa, and 5.29-7.02 MPa, respectively, for blank patches, and 116.83-147.28 MPa, 89.49-100.47 MPa, 133.78-159.27 %, 2.01-3.98 MPa, and 4.03-5.19 MPa, respectively, for herbal patches. We prepared herbal blended patches made from chitosan/PVA or chitosan/HPMC polymer matrix blends incorporating the crude Z. cassumunar oil. They had good mechanical properties that might be developed for herbal medicinal application.

scholarly journals The investigation of producing bacterial cellulose fibres through hand-spun

2019 ◽  
Vol 131 ◽  
pp. 01052
Author(s):  
Yu Wang
Keyword(s):  
Tensile Strength ◽  
Bacterial Cellulose ◽  
Young’S Modulus ◽  
Filter Cake ◽  
Young's Modulus ◽  
Raw Material ◽  
Cellulose Fibres ◽  
Elongation At Break ◽  
Intermediate States

Nanocellulose fibres can be hand-spun from different intermediate states, such as nanocellulose paper and filter cake, which are made from the BC suspension as well as wet pellicle (WP) and dry pellicle (DP) from BC pellicles. In this study, it can be concluded that increasing the hanging weight can increase the Young’s modulus and the tensile strength of fibres. Nanofibres produced from BC pellicles as raw material have better performance than those made from BC suspension. The best properties obtained from the fibres produced from wet pellicles and suspended to a 100g hanging weight upon drying are Young’s modulus (33.8 GPa), tensile strength (610 MPa) and elongation at break (3.6%).

scholarly journals Enhancement of the Thermomechanical Properties of a Fly Ash- and Carbon Black-Filled Polyvinyl Chloride Composite by Using Epoxidized Soybean Oil as a Secondary Bioplasticizer

2018 ◽  
Vol 2018 ◽  
pp. 1-8
Author(s):  
Toan Duy Nguyen ◽  
Chinh Thuy Nguyen ◽  
Van Thanh Thi Tran ◽  
Giang Vu Nguyen ◽  
Hai Viet Le ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Fly Ash ◽  
Carbon Black ◽  
Soybean Oil ◽  
Young’S Modulus ◽  
Polyvinyl Chloride ◽  
Young's Modulus ◽  
Epoxidized Soybean Oil ◽  
Melt Mixing ◽  
Elongation At Break

Plasticized polyvinyl chloride (PVC) was fabricated using epoxidized soybean oil (ESBO) as a secondary bioplasticizer with dioctyl phthalate (DOP). The PVC/MFA/CB composites were prepared by melt mixing of the plasticized PVC with modified fly ash (MFA), carbon black N330 (CB), and polychloroprene (CR) in a Haake Rheomix mixer using a rotation speed of 50 rpm at 175°C for 6 min and then compressed by Toyoseiki pressure machine under 15 MPa. The effect of ESBO content on morphology, melt viscosity, tensile properties, and flame retardancy of PVC/MFA/CB composites was investigated. The obtained results showed that the incorporation of ESBO has significantly enhanced the processing ability, Young’s modulus, tensile strength, and elongation at break of the PVC/MFA/CB composites. The torque of PVC/MFA/CB composites was increased to approximately 12% when 50 wt% of DOP was replaced by ESBO. When ESBO was 20 wt% in comparison with DOP weight, the elongation at break, tensile strength, and Young’s modulus of the composites were increased to 48%, 24%, and 4.5%, respectively. Correspondingly, thermogravimetric analysis results confirmed that ESBO had improved the thermostability of the PVC composites. The ESBO have potential as a secondary bioplasticizer replacement material for DOP owing to their better thermomechanical stability.

Hybrid Nanocomposites of Poly(Lactic Acid)/Thermoplastic Polyurethane with Nanosilica/Montmorillonite

2019 ◽  
Vol 947 ◽  
pp. 77-81
Author(s):  
Natsuda Palawat ◽  
Phasawat Chaiwutthinan ◽  
Sarintorn Limpanart ◽  
Amnouy Larpkasemsuk ◽  
Anyaporn Boonmahitthisud
Keyword(s):  
Thermal Stability ◽  
Tensile Strength ◽  
Impact Strength ◽  
Young’S Modulus ◽  
Young's Modulus ◽  
Thermoplastic Polyurethane ◽  
Hybrid Nanocomposites ◽  
Poly Lactic Acid ◽  
Elongation At Break ◽  
Thermal Stability Of

The aim of this study is to improve the physical properties of poly(lactic acid) (PLA) by incorporating thermoplastic polyurethane (TPU), organo-montmorillonite (OMMT) and/or nanosilica (nSiO2). PLA was first melt mixed with five loadings of TPU (10–50 wt%) on a twin-screw extruder, followed by injection molding. The addition of TPU was found to increase the impact strength, elongation at break and thermal stability of the blends, but decrease the tensile strength and Young’s modulus. Based on a better combination of the mechanical properties, the 70/30 (w/w) PLA/TPU blend was selected for preparing both single and hybrid nanocomposites with a fix total nanofiller content of 5 parts per hundred of resin (phr), and the OMMT/nSiO2 weight ratios were 5/0, 2/3, 3/2 and 0/5 (phr/phr). The Young’s modulus and thermal stability of the nanocomposites were all higher than those of the neat 70/30 PLA/TPU blend, but at the expense of reducing the tensile strength, elongation at break and impact strength. However, all the nanocomposites exhibited higher impact strength and Young’s modulus than the neat PLA. Among the four nanocomposites, a single-filler nanocomposite containing 5 phr nSiO2 exhibited the highest impact strength and thermal stability, indicating that there was no synergistic effect of the two nanofillers on the investigated physical properties. However, the hybrid nanocomposite containing 2/3 (phr/phr) OMMT/nSiO2 possessed a compromise in the tensile properties.

Influence of annealing on microstructure & molecular orientation, thermal behaviour, mechanical properties and their correlations of uniaxially drawn iPP thin film

e-Polymers ◽  
2008 ◽  
Vol 8 (1) ◽  
Author(s):  
Sayant Saengsuwan
Keyword(s):  
Thin Film ◽  
Mechanical Properties ◽  
Tensile Strength ◽  
Young’S Modulus ◽  
Thermal Behaviour ◽  
Annealing Time ◽  
Molecular Orientation ◽  
Young's Modulus ◽  
Crystal Thickness ◽  
Scanning Calorimetry

AbstractThe influence of annealing on the microstructure and molecular orientation, thermal behaviour and mechanical properties of uniaxially drawn iPP thin film was studied by wide-angle X-ray diffraction, differential scanning calorimetry and tensile testing, respectively. The correlations of mechanical and microstructural properties of annealed films were also examined. The transformation of smectic phase of iPP to the α-form was more pronounced with increasing annealing time and temperature. The true and apparent crystallinities and crystal thickness were strongly enhanced with annealing time and temperature. The relative molecular orientation tended to increase with annealing time. These results caused the significant improvement of modulus and tensile strength of the annealed films in both machine (MD) and transverse (TD) directions. The increases in MD-Young’s modulus and MD-tensile strength were well correlated with the increase in true crystallinity obtained in equatorial scans. Some relationship between the increase in crystal thickness and the increase in Young’s modulus in both MD and TD directions was also found.

scholarly journals PENGARUH KONSENTRASI PATI UBI TALAS (Colocasia esculenta) DAN JENIS PLASTICIZER TERHADAP KARAKTERISTIK BIOPLASTIK

2019 ◽  
Vol 7 (3) ◽  
pp. 457
Author(s):  
Farida Unggul Situmorang ◽  
Amna Hartiati ◽  
Bambang Admadi Harsojuwono
Keyword(s):  
Tensile Strength ◽  
Young’S Modulus ◽  
Young's Modulus ◽  
Block Design ◽  
Colocasia Esculenta ◽  
Ftir Analysis ◽  
Elongation At Break ◽  
Randomized Block Design

This study aims to know the effect of the concetration of taro tuber starch and plasticizer type and their interactions on the characteristics of bioplastics, and to determine the concentration of taro tuber starch and plasticizer type which produces bioplastics with the best characteristics. The research used factorial randomized block design. The first factor is the concentration of taro tuber starch consisting of 3 levels 5, 6 and 7% (w/w). The second factor is the plasticizer type consisting of 3 levels that is glycerol, sorbytol and mixture plasticizer glycerol and sorbitol (1:1). Each treatment are grouped into two time-based of making bioplastics so there are 18 experimental units. Variabels observed tensile strength, elongation at break, Young’s modulus, swelling, biodegradation and FTIR. The data obtained were analyzed of variant and test Tukey’s. The result showed that the concentration of taro tuber starch and type of plasticizer had a very significant effect on tensile strength, elongation at break, Young’s Modulus and swelling but the type of plasticizer had no significant effect on biodegradation. Interaction between treatments has a very significant effect on Young’s Modulus and swelling, a significant effect on tensile strength and no significant effect on elongation at break and biodegradation. The concentration of starch 6% with plasticizer glycerol produces the best characteristics of bioplastics with tensile strength 2.270 0.057 MPa, elongation at break 14.5 0.01 %, Young’s modulus 15.683 1.155 MPa, swelling 29.88 1.02 % and biodegradability 6-7 days. FTIR analysis proved the existence of hydroxyl (O-H), carbonyl (C=O), C=C aromatic, carboxyl (C-O), C-H aromatic, and hydrocarbons –(CH2)n in the bioplastic. Keywords: Bioplastics, concentration of taro tuber starch, glycerol, sorbytol  

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