Tensile properties and interfacial adhesion of silicone rubber/polyethylene blends by reactive blending

2018 ◽  
Vol 135 (17) ◽  
pp. 46192 ◽  
Author(s):  
Kana Matsuura ◽  
Hiromu Saito
Keyword(s):  
Tensile Properties ◽  
Silicone Rubber ◽  
Interfacial Adhesion ◽  
Reactive Blending ◽  
Polyethylene Blends

Toughening of Polypropylene Highly Filled with Aluminum Hydroxide

2005 ◽  
Vol 13 (2) ◽  
pp. 139-150 ◽  
Author(s):  
Zhanpai Su ◽  
Pingkai Jiang ◽  
Qiang Li ◽  
Ping Wei ◽  
Yong Zhang
Keyword(s):  
Mechanical Properties ◽  
Tensile Properties ◽  
Aluminum Hydroxide ◽  
Interfacial Adhesion ◽  
Ethylene Propylene Diene Monomer ◽  
The Matrix ◽  
Izod Impact ◽  
Rubbery Phase ◽  
Rubber Phase ◽  
Toughening Agent

The flame retardant and mechanical properties of polypropylene (PP), highly filled with aluminum hydroxide (Al(OH)3) and toughened with ethylene propylene diene monomer (EPDM) and zinc neutralized sulfated EPDM ionomer (Zn-S-EPDM), were studied along with their morphology. The PP matrix when highly filled with Al(OH)3 particles can achieve an adequate level of flame retardancy, but there is a decrease in the mechanical properties because of inadequate adhesion between the Al(OH)3 particles and the PP matrix and the strong tendency of the filler to agglomerate. The rubber incorporated in the PP/Al(OH)3 composites has two roles: as compatibilizer and toughening agent. Although ordinary EPDM significantly improves the Izod impact strength of the composites, the tensile properties are much worse because of the weak interfacial adhesion between the modifier and the matrix. Using Zn-S-EPDM instead EPDM, the tensile properties are much improved with only a slight decrease in toughness, because of improvements in the interfacial adhesion between modifier and matrix. SEM micrographs show that the rubber phase is dispersed in the continuous PP matrix and that most Al(OH)3 particles are uniformly distributed in the rubbery phase. Larger, obviously rubbery, domains can be seen in the PP/EPDM/Al(OH)3 ternary composites. Much finer rubbery domains were found in the PP/Zn-S-EPDM/Al(OH)3 composites.

Structure and properties of recycled bamboo fiber reinforced chemically functionalized ethylene propylene rubber composites

2019 ◽  
Vol 28 (8-9) ◽  
pp. 609-622
Author(s):  
Dinesh ◽  
Sanjay Palsule
Keyword(s):  
Tensile Properties ◽  
Interfacial Adhesion ◽  
Loss Modulus ◽  
Bamboo Fiber ◽  
Mechanical And Thermal Properties ◽  
Fiber Reinforced ◽  
Ethylene Propylene ◽  
Fiber Treatment ◽  
Ethylene Propylene Rubber ◽  
Increasing Temperature

Recycled bamboo fiber-reinforced chemically functionalized ethylene propylene rubber (R-BMBF/CF-EPR) composites have been developed by extrusion and injection molding by Palsule process without any fiber treatment and without compatibilizer. Scanning electron microscopy (SEM) shows good R-BMBF/CF-EPR interfacial adhesion in the composites, and Fourier transform infrared (FTIR) confirms that esterification and the hydrogen bonding between functional groups of CF-EPR and of R-BMBF impart this interfacial adhesion. Mechanical, dynamic mechanical, and thermal properties and the effect of water absorption on tensile properties of the composites have been evaluated. Tensile properties of the 15/85, 25/75, and 35/65 R-BMBF/CF-EPR composites are higher than those of CF-EPR and increase with increasing R-BMBF in the composites. Storage modulus and loss modulus of the composites increase with increasing fiber contents in them but decrease with increasing temperature. Water-absorbed wet composites show thickness swelling and reduced tensile properties relative to the respective dry composites but higher tensile properties than the dry CF-EPR. Thermal stability and degradation of the composites is also reported.

Tensile Properties of Pineapple Leaf Fibre Reinforced Unsaturated Polyester Composites

2014 ◽  
Vol 695 ◽  
pp. 159-162 ◽  
Author(s):  
Januar Parlaungan Siregar ◽  
Tezara Cionita ◽  
Dandi Bachtiar ◽  
Mohd Ruzaimi Mat Rejab
Keyword(s):  
Tensile Strength ◽  
Tensile Properties ◽  
Fiber Length ◽  
Interfacial Adhesion ◽  
Unsaturated Polyester ◽  
Fibre Length ◽  
Tensile Modulus ◽  
Natural Fibre ◽  
Fibre Content ◽  
Polyester Composites

In recent years natural fibres such as sisal, jute, kenaf, pineapple leaf and banana fibres appear to be the outstanding materials which come as the viable and abundant substitute for the expensive and non-renewable synthethic fibre. This paper investigate the effect of fibre length and fibre content on the tensile properties of pineapple leaf fibre (PALF) reinforced unsaturated polyester (UP) composites. PALF as reinforcement agent will be employed with UP to form composite material specimens. The various of fiber length (<0.5, 0.5–1, and 1-2 mm) and fibre content (0, 5, 10 and 15 % by volume) in UP composite have been studied. The fabrication of PALF/UP composites used hand lay-up process, and the specimens for tensile test prepared follow the ASTM D3039. The result obtained from this study show that the 1-2 mm fibre length has higher tensile strength (42 MPa) and tensile modulus (1344 MPa) values compared to fibre length of <0.5 mm (30 MPa and 981 MPa) and 0.5-1 mm (35.40 MPa and 1020 MPa) respectively. Meanwhile, for the effect of various fibre content in study has shown that the increase of fibre content has decreased in tensile strength dan tensile modulus of composites. The increase of fibre content due to poor interfacial bonding and poor wetting of the fibre by unsaturated polyster. The treatment of natural fibre are suggested in order to improve the interfacial adhesion between natural fibre and the unsaturated polyester.

Recycled High Density Polyethylene / Natural Rubber / Chicken Feather Fibers (RHDPE/NR/CFF) Composites: The Effects of Fiber Loading and Benzyl Urea on Tensile Properties and Morphology Analysis

2013 ◽  
Vol 795 ◽  
pp. 582-586 ◽  
Author(s):  
M.I.M. Yazid ◽  
A.G. Supri ◽  
Z. Firuz ◽  
Luqman Musa
Keyword(s):  
Tensile Properties ◽  
High Density Polyethylene ◽  
Interfacial Adhesion ◽  
Chicken Feather ◽  
Rotor Speed ◽  
Elongation At Break ◽  
Fiber Loading ◽  
The Matrix ◽  
Feather Fibers ◽  
Lower Elongation

The effects of benzyl urea into RHDPE/NR/CFF composites with different fibers loading were studied. The composites were prepared using BrabenderPlasticorder at 160 °C with rotor speed of 50rpm. The composites were characterized in respect of their tensile properties and morphology. The results indicated that RHDPE/NR/CFF with benzyl urea composites show higher values of tensile strength, Youngs modulus, but lower elongation at break than RHDPE/NR/CFF composites. RHDPE/NR/CFF with benzyl urea composites gave a better interfacial adhesion between the matrix and the fiber than RHDPE/NR/CFF composites as evidence using SEM.

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.

scholarly journals Morpho-Structural, Thermal and Mechanical Properties of PLA/PHB/Cellulose Biodegradable Nanocomposites Obtained by Compression Molding, Extrusion, and 3D Printing

Nanomaterials ◽  
2019 ◽  
Vol 10 (1) ◽  
pp. 51 ◽  
Author(s):  
Adriana Nicoleta Frone ◽  
Dan Batalu ◽  
Ioana Chiulan ◽  
Madalina Oprea ◽  
Augusta Raluca Gabor ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
3D Printing ◽  
Interfacial Adhesion ◽  
Compression Molding ◽  
Processing Technique ◽  
Single Step ◽  
Thermal And Mechanical Properties ◽  
Reactive Blending ◽  
Scanning Calorimetry ◽  
The Impact

Biodegradable blends and nanocomposites were produced from polylactic acid (PLA), poly(3-hydroxybutyrate) (PHB) and cellulose nanocrystals (NC) by a single step reactive blending process using dicumyl peroxide (DCP) as a cross-linking agent. With the aim of gaining more insight into the impact of processing methods upon the morphological, thermal and mechanical properties of these nanocomposites, three different processing techniques were employed: compression molding, extrusion, and 3D printing. The addition of DCP improved interfacial adhesion and the dispersion of NC in nanocomposites as observed by scanning electron microscopy and atomic force microscopy. The carbonyl index calculated from Fourier transform infrared spectroscopy showed increased crystallinity after DCP addition in PLA/PHB and PLA/PHB/NC, also confirmed by differential scanning calorimetry analyses. NC and DCP showed nucleating activity and favored the crystallization of PLA, increasing its crystallinity from 16% in PLA/PHB to 38% in DCP crosslinked blend and to 43% in crosslinked PLA/PHB/NC nanocomposite. The addition of DCP also influenced the melting-recrystallization processes due to the generation of lower molecular weight products with increased mobility. The thermo-mechanical characterization of uncross-linked and cross-linked PLA/PHB blends and nanocomposites showed the influence of the processing technique. Higher storage modulus values were obtained for filaments obtained by extrusion and 3D printed meshes compared to compression molded films. Similarly, the thermogravimetric analysis showed an increase of the onset degradation temperature, even with more than 10 °C for PLA/PHB blends and nanocomposites after extrusion and 3D-printing, compared with compression molding. This study shows that PLA/PHB products with enhanced interfacial adhesion, improved thermal stability, and mechanical properties can be obtained by the right choice of the processing method and conditions using NC and DCP for balancing the properties.

scholarly journals Effect of oxygen plasma treatment on tensile strength of date palm fibers and their interfacial adhesion with epoxy matrix

2018 ◽  
Vol 25 (5) ◽  
pp. 993-1001 ◽  
Author(s):  
Maryam Gholami ◽  
Mohammad Saleh Ahmadi ◽  
Mohammad Ali Tavanaie ◽  
Mohammad Khajeh Mehrizi
Keyword(s):  
Tensile Strength ◽  
Plasma Treatment ◽  
Tensile Properties ◽  
Exposure Time ◽  
Composite Structures ◽  
Interfacial Adhesion ◽  
Oxygen Plasma ◽  
Date Palm ◽  
Fiber Surface ◽  
Date Palm Fibers

AbstractIn recent years, natural fibers have received much attention from various industrial applications. As these fibers are lightweight, nonabrasive, low cost, ecofriendly and biodegradable, they can be sometimes considered as alternatives to synthetic fibers in lightweight composite structures. In this work, date palm fibers (DPFs) were treated by oxygen plasma at various plasma discharge power and exposure time. The effects of plasma treatment on tensile strength of DPF and interfacial adhesion between DPF and epoxy were determined by single fiber tensile test and microbond test, respectively. Scanning electron microscopy was used to investigate the surface morphologies of DPFs before and after the plasma treatment. The functional groups on the surface were studied by attenuated total reflectance-Fourier transform infrared spectroscope (ATR-FTIR). Decrease in hemicellulose and lignin content of DPF was indicated in ATR-FTIR spectra of the treated sample with plasma treatment. The results show that plasma treatment cleans the fiber surface and increases the surface roughness by etching effect. Moreover, fiber surface modification significantly improves tensile properties of DPFs and interfacial shear stress (IFSS) of fiber/matrix. However, the effects of plasma power and exposure time on tensile properties and IFSS values of DPFs are not found significant. Moreover, Weibull statistics show that plasma treatment could not decrease the variability in fiber strength due to the nature of fibers.

Tensile Properties and Morphology of Low Linear Density Polyethylene/Kapok Husk Eco-Composites

2015 ◽  
Vol 754-755 ◽  
pp. 161-165
Author(s):  
Nurul Fatin Syazwani binti Arshad ◽  
Salmah Husseinsyah ◽  
Lim Bee Ying
Keyword(s):  
Tensile Strength ◽  
Tensile Properties ◽  
Modulus Of Elasticity ◽  
Interfacial Adhesion ◽  
Linear Density ◽  
Filler Content ◽  
Rotor Speed ◽  
Elongation At Break ◽  
Morphology Study

This research focused on the utilization of kapok husk (KH) as filler in low linear density polyethylene (LLDPE). The effect of filler content on tensile properties and morphology of LLDPE/KH eco-composites were investigated. The eco-composites were prepared by using Brabender Plasticiser EC Plus at temperature 160 °C and rotor speed 50 rpm. The results indicated that the tensile strength and elongation at break decreased with KH content increased. However, the modulus of elasticity increased with increasing of KH content. The morphology study of eco-composites exhibit poor interfacial adhesion between KH and LLDPE.

scholarly journals Enhancement of Tensile Properties of Surface Treated Oil Palm Mesocarp Fiber/Poly(Butylene Succinate) Biocomposite by (3-Aminopropyl)Trimethoxysilane

2016 ◽  
Vol 846 ◽  
pp. 665-672
Author(s):  
Yoon Yee Then ◽  
Ibrahim Nor Azowa ◽  
Norhazlin Zainuddin ◽  
Buong Woei Chieng ◽  
Chern Chiet Eng ◽  
...  
Keyword(s):  
Tensile Properties ◽  
Oil Palm ◽  
Interfacial Adhesion ◽  
Natural Fiber ◽  
Alkali Treatment ◽  
Tensile Modulus ◽  
Tensile Fracture ◽  
Maximum Enhancement ◽  
Butylene Succinate ◽  
Tensile Fracture Surface

The issue related to relatively poor interfacial adhesion between hydrophilic natural fiber and hydrophobic thermoplastic remain as an obstacle in natural fiber/thermoplastic biocomposites. Consequently, surface treatment of fiber is of important to impart adhesion. The present work used consecutive superheated steam-alkali treatment to treat the oil palm mesocarp fiber (OPMF) prior to biocomposite fabrication. The biocomposites made up of 70 wt% treated OPMF and 30 wt% poly (butylene succinate) (PBS) were prepared by melt blending technique in a Brabender internal mixer followed by hot-press moulding into 1 mm sheets. A silane coupling agent of (3-aminopropyl) trimethoxysilane (APTMS) was also added to the biocomposite during the process of compounding to promote interfacial adhesion and enhance the properties of biocomposites. The results showed that the biocomposite containing 2 wt% APTMS showed maximum enhancement in tensile strength (89%), tensile modulus (812%) and elongation at break (52%) in comparison to that of untreated OPMF/PBS biocomposite. The SEM observation of the tensile fracture surface revealed that APTMS improved the interfacial adhesion between treated OPMF and PBS. It can be deduced that the presence of APTMS can improve the adhesion between hydrophilic fiber and hydrophobic thermoplastic, and thus increased the tensile properties of the biocomposite.

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