Thermal and Mechanical Properties of PLA/BN/BR Ternary Composite Films

2016 ◽  
Vol 707 ◽  
pp. 3-7
Author(s):  
Arper Baethu ◽  
Jantrawan Pumchusak
Keyword(s):  
Thin Film ◽  
Electron Microscopy ◽  
Mechanical Properties ◽  
Thermal Properties ◽  
Composite Films ◽  
Solvent Casting ◽  
Thermal And Mechanical Properties ◽  
Casting Method ◽  
Ternary Composite ◽  
Scanning Electron

In this research, the effects of boron nitride (BN) and polybutadiene (BR) on thermal and mechanical properties of polylactic acid (PLA) composite films were studied. PLA thin film in the thickness of less than 0.2 mm was fabricated using the solvent casting method. The loadings of BN and BR of 0-7 wt% were applied to the PLA matrix. The morphologies of composite films were characterized by scanning electron microscopy (SEM). The thermal and mechanical properties were also investigated. It was found that the addition of BN and BR can improve the thermal properties of PLA composite films. PLA/BN3%/BR5% ternary composite films provided the higher thermal properties, tensile strength and Young’s modulus, compared to PLA/BN1%/BR5% ternary composite films.

Modification of DABA/BMI Composites by Silane Compound and Fumed SiO2

2012 ◽  
Vol 622-623 ◽  
pp. 1006-1013
Author(s):  
Nazakat Alia ◽  
Qiu Yu Zhang ◽  
Yin Wu ◽  
Ying Chen
Keyword(s):  
Electron Microscopy ◽  
Mechanical Properties ◽  
Scanning Electron Microscopy ◽  
Thermal Properties ◽  
Fumed Silica ◽  
Heat Stability ◽  
Nano Composite ◽  
Bending Modulus ◽  
Scanning Electron

In this present investigation, at first, Dially bisphenol A (DABA)/Bismaleimide (BMI) system was modified with gamma-aminopropyltriethoxy silane (KH550). The objective of the work was to study the effect of addition of various weight percentages of KH550 into BMI/DABA composites on its mechanical properties, thermal properties and morphorogy. Further modification was carried out with fumed silica. The role of KH550 was discussed in these composites prepared. Nancomposites were characterized by differential DSC, TGA, and scanning electron microscopy SEM. TGA results confirmed that the heat stability of the nano composite DABA/BMI/KH550 is improved compared with DABA/BMI system. SEM results indicated that the fumed silica dispersed homogeneously in DABA/BMI/KH550 matrix on nanoscale. Mechanical results shows that newly developed system has improved bending modulus to 4.0GPa, while with incorporation of fumed SiO2 impacted strength also improved to 20.60kJ/m2.

Mechanical Behaviour of Nickel Based Amorphous Alloys during Tensile Test at Different Strain Rates

2014 ◽  
Vol 601 ◽  
pp. 50-53 ◽  
Author(s):  
Florin Marian Cornea ◽  
Cosmin Codrean ◽  
Dragoş Buzdugan ◽  
Viorel Aurel Şerban
Keyword(s):  
Electron Microscopy ◽  
Mechanical Properties ◽  
Tensile Test ◽  
Amorphous Alloys ◽  
Fracture Behaviour ◽  
Tensile Tests ◽  
Strain Rates ◽  
Casting Method ◽  
Planar Flow Casting ◽  
Scanning Electron

Nickel based amorphous alloys have been developed in ribbons form by planar flow casting method and were subjected to tensile tests. For this purpose, specimens with calibrated area were obtained by electroerosion cutting method and tested at tensile test with different strain rates. Following the results obtained during the tests, the mechanical properties have been determined and compared and the fracture behaviour has been analyzed by scanning electron microscopy.

Fabrication, Characterization and Adsorptive of Human Fibrinogen of HA/PHBV Nano Composite Films

2010 ◽  
Vol 160-162 ◽  
pp. 1325-1330
Author(s):  
Jun Yuan ◽  
Qi Xin Zheng ◽  
Jian Cheng
Keyword(s):  
Mechanical Properties ◽  
Composite Films ◽  
Nano Particles ◽  
Solvent Casting ◽  
Casting Method ◽  
Human Fibrinogen ◽  
Nano Composite ◽  
Nano Scale

In this investigation, nano-scale hydroxyapatite (HA) particles were incorporated in poly(hydroxybutyrate-co-valerate) (PHBV) polymer to fabricate composite films using solvent casting method. The morphologies, mechanical properties and adsorptive of human fibrinogen of the composite films were investigated. The HA nano-particles were dispersed in the films and well bonded to the polymer. The strength of films could be enhanced and its adsorptive of human fibrinogen could be also improved greatly by introducing HA nano-particles into the films. The results suggested these newly developed nano-HA/PHBV composite films might serve as an effective biomedicine material.

scholarly journals Mechanical and morphology properties of titanium oxide-epoxy nanocomposites

2020 ◽  
Author(s):  
Tayser Sumer Gaaz ◽  
Emad Kamil Hussein ◽  
Kussay Ahmed Subhi ◽  
Ahmed Al-Amiery
Keyword(s):  
Electron Microscopy ◽  
Mechanical Properties ◽  
Titanium Oxide ◽  
Biomedical Application ◽  
Industrial Applications ◽  
Casting Method ◽  
Tensile Impact ◽  
Wide Range ◽  
Cracks Propagation ◽  
Scanning Electron

Abstract In the current work, the influences of titanium oxide (TO) on nanocomposites using epoxy (EP) resin have been investigated. EP resin was added to various contents in terms of volume of TO (6%). Based on the casting method, the TO-EP nanocomposites were prepared. Mechanical properties in terms of tensile, impact and hardness properties exhibited improvements in the mechanical results of the TO-EP nanocomposites. The experimental results exhibited that the enhancement in the tensile strength, impact, and hardness was found to be 14 MPa, 40.1 J/mm2 and 228.9 HV, respectively. Moreover, the effect of the strength has decreased compared with pointing to brittleness that increased the TO-EP nanocomposites. Field emission scanning electron microscopy (FESEM) analysis was used to perform a microstructure analysis which in turn revealed how TO obstruction the cracks propagation in the nanocomposites. The interface between the TO and the EP nanocomposites was observed using the FESEM images. The results highlighted that the TO-EP nanocomposites can be used a wide range of industrial applications such as biomedical application.

Effect of Zn Additions on Thermal and Mechanical Properties of Sn-0.7Cu-xZn Solder Alloy

2018 ◽  
Vol 280 ◽  
pp. 200-205
Author(s):  
Mohd Izrul Izwan Ramli ◽  
Mohd Arif Anuar Mohd Salleh ◽  
I.N.A. Ibrahim ◽  
Rita Mohd Said
Keyword(s):  
Mechanical Properties ◽  
Thermal Properties ◽  
Solder Alloy ◽  
Vickers Hardness ◽  
Small Addition ◽  
Thermal And Mechanical Properties ◽  
Casting Method ◽  
Conventional Casting ◽  
Minor Addition ◽  
Zn Addition

This research examines the influences of minor addition of Zn on the thermal and mechanical properties in Sn-0.7Cu solder alloy. The addition of 0.5, 1.0 and 1.5 wt.% of Zn were added into Sn-0.7Cu by using conventional casting method. It show that minor Zn addition has refined and promoted the nucleation of β-Sn phase. The vickers hardness show a increases the hardness of Sn-0.7Cu solder alloy with increasing amount of Zn. For thermal properties, with a small addition of Zn, it did not change the melting but has a slight decrease the undercooling of Sn-0.7Cu solder alloy.

Enhancement of TiO2 Thin Film UV Detectors by Study of Electromagnetic Effects of Silver Nanoparticle

2012 ◽  
Vol 463-464 ◽  
pp. 1450-1454 ◽  
Author(s):  
S. Mohammadnejad ◽  
A. Bazmara ◽  
M.H. Hajigholam
Keyword(s):  
Thin Film ◽  
Electron Microscopy ◽  
Metal Particle ◽  
Tio2 Thin Film ◽  
Sol Gel ◽  
Composite Films ◽  
Metal Particles ◽  
Plasmonic Resonance ◽  
Uv Detectors ◽  
Scanning Electron

In this article Tio2 thin film Containing dispersed Ag metal particle was prepared by the sol gel method, and the effect of the metal particles on the optical properties such as responsivity, extinction coefficient, plasmonic resonance of the thin films were investigated. UV/Vis optical spectra and Scanning electron microscopy were recorded to characterize the Ag/Tio2 composite films.

scholarly journals Thermal and Mechanical Properties of Biodegradable Star-Shaped/Linear Polylactide Stereocomplexes

2015 ◽  
Vol 2015 ◽  
pp. 1-9 ◽  
Author(s):  
Onanong Cheerarot ◽  
Yodthong Baimark
Keyword(s):  
Mechanical Properties ◽  
Molecular Weight ◽  
Solvent Casting ◽  
Thermal And Mechanical Properties ◽  
Casting Method ◽  
Blend Ratio ◽  
Blend Films ◽  
Molecular Weights ◽  
Linear Poly ◽  
Blend Ratios

The 6-arm star-shaped poly(L-lactide) (6PLL)/linear poly(D-lactide) (1PDL) stereocomplex films were prepared by the solvent casting method. The influences of the 6PLL/1PDL blend ratios (75/25, 50/50, and 25/75 w/w) and 1PDL molecular weights (15,000, 30,000, and 60,000 g/mol) on the thermal and mechanical properties of the stereocomplex films were investigated. The 6PLL and 1PDLs had a single melting temperature (Tm) of homocrystallites at 174°C and 167°C, respectively. The 6PLL/1PDL blends had twoTms: a lowerTmof homocrystallites (160–173°C) and a higherTmof stereocomplex crystallites (219–228°C). The stereocomplex crystallinity and mechanical properties of the 6PLL/1PDL blend films were higher than those of 6PLL and 1PDL and were the highest in the 50/50 (w/w) blend ratio. However, the stereocomplex crystallinity of the 50/50 (w/w) 6PLL/1PDL blend films decreased and the mechanical properties increased as the molecular weight of 1PDL increased.

Thermal and Mechanical Properties of Mulch Film from Poly(Lactic Acid)/Expoxidized Natural Rubber Blends Filled with Rutile TiO2 as Fillers

2013 ◽  
Vol 844 ◽  
pp. 65-68
Author(s):  
Pranee Nuinu ◽  
Kittikorn Samosorn ◽  
Kittisak Srilatong ◽  
Siripa Tongbut ◽  
Sayant Saengsuwan
Keyword(s):  
Thin Film ◽  
Mechanical Properties ◽  
Thermal Stability ◽  
Lactic Acid ◽  
Thermal Properties ◽  
Natural Rubber ◽  
Decomposition Temperature ◽  
Poly Lactic Acid ◽  
Thermal And Mechanical Properties ◽  
Thermal Stability Of

The aim of this research was to reduce and improve the brittleness and thermal properties of poly lactic acid (PLA), respectively. Epoxidized natural rubber (ENR) was used to enhance the toughness and rutile titanium dioxide (R-TiO2) as filler was also incorporated to improve the thermal properties of the PLA. 10wt% ENR with epoxidation contents of 25 mol% (ENR25) and 50 mol% (ENR50) and various R-TiO2contents (0-10 phr)were compounded with PLA by using a twin-screw extruder at 155-165°C and a rotor speed of 40 rpm. The pellets of blends were then formed a thin film using a cast film extruder machine and cooled down under air flow. Thermal and mechanical properties and morphology of PLA/ENR/R-TiO2thin film were investigated. The crystallinity of PLA was found to increase with addition of ENR. The mechanical properties of thin film showed that the ENR50 enhanced the elongation but reduced the tensile strength of PLA with addition of R-TiO2at 5 and 10 phr, respectively. The TGA indicated that the addition of 10 phr R-TiO2increased in the decomposition temperature at 5% weight loss (Td5%) of PLA/ENR film. Thus the thermal stability of PLA/ENR50 was found to improve with addition of R-TiO2. From morphology study, the ENR50 phase showed a good dispersion in the PLA matrix. In conclusion, the addition of ENR and R-TiO2was found to enhance both toughness and thermal stability of PLA.

Electron Microscopic Observation of the Longitudinal Organization of Poly (p-Phenylene Terephthalamide) Fibers

1982 ◽  
Vol 40 ◽  
pp. 680-681
Author(s):  
Li Li-Sheng ◽  
L.F. Allard ◽  
W.C. Bigelow
Keyword(s):  
Electron Microscopy ◽  
Mechanical Properties ◽  
Scanning Electron Microscopy ◽  
Microscopic Observation ◽  
Electron Microscopic Observation ◽  
Electron Microscopic ◽  
Aromatic Polyamides ◽  
Radial Arrangement ◽  
Scanning Electron ◽  
Better Than

The aromatic polyamides form a class of fibers having mechanical properties which are much better than those of aliphatic polyamides. Currently, the accepted morphology of these fibers as proposed by M.G. Dobb, et al. is a radial arrangement of pleated sheets, with the plane of the pleats parallel to the axis of the fiber. We have recently obtained evidence which supports a different morphology of this type of fiber, using ultramicrotomy and ion-thinning techniques to prepare specimens for transmission and scanning electron microscopy.

Electrostatic Adhesion Testing for the Evaluation of Metallization Adhesion

1997 ◽  
Vol 473 ◽  
Author(s):  
H. S. Yang ◽  
F. R. Brotzen ◽  
D. L. Callahan ◽  
C. F. Dunn
Keyword(s):  
Thin Film ◽  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Distribution Function ◽  
Quantitative Measurement ◽  
Multilayer Films ◽  
Adhesion Testing ◽  
Novel Technique ◽  
Electrostatic Adhesion ◽  
Scanning Electron

ABSTRACTQuantitative measurement of the adhesion strength of thin film metallizations has been achieved by a novel technique employing electrostatic forces to generate delaminating stresses. This technique has been used in testing the adhesion of Al-Cu, Cu, and Al multilayer films deposited on Si. Micro-blister-type failure is revealed by scanning electron microscopy. The delamination process and the geometry of the blister are discussed. The measured adhesion data fit a Weibull distribution function.

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