Chemical Reaction and Morphology of Polypropylene (PP)/Recycled Acrylonitrile Butadiene Rubber (NBRr)/Banana Skin Powder (BSP) Composites with γ-APS

2016 ◽  
Vol 1133 ◽  
pp. 175-179
Author(s):  
Azlinda Abdul Ghani ◽  
Ragunathan Santiagoo ◽  
Tunku Alisha Zanariah Tunku Ozir ◽  
Sam Sung Ting ◽  
Hanafi Ismail
Keyword(s):  
Surface Modification ◽  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Morphological Study ◽  
Functional Group ◽  
Butadiene Rubber ◽  
Intense Band ◽  
Acrylonitrile Butadiene Rubber ◽  
Roll Mill ◽  
Scanning Electron

Polypropylene (PP)/ recycled acrylonitrile butadiene rubber (NBRr)/ banana skin powder (BSP) composites were studied. Different BSP filer loading (5, 10, 15,20,25,30 wt. %) were prepared by using heated two roll mill at 180 °C. Then, the composites were tested for functional group using FTIR model Perkin Elmer Series 2. Field Emission Scanning Electron Microscope (VPFESEM) model Zeiss SUPRA 35VP also were using for morphological study. The effect of 3-aminopropyltrimethoxysilane (APS) as coupling agent were evaluated.The FTIR test shows different bands around 3200-3500 and 1740 cm-1 which represent the stretching of OH and C=O groups respectively. As for BSP which composed mostly of cellulose, hemicelluloses and lignin, the cellulose backbone C-OH is represent by the peaks of 1050 and 1048 cm-1 respectively. The γ-APS intense band around 1167 cm-1 and 1098 cm-1 in treated composite was assigned to the stretching of the-Si-O-Cellulose and –Si-O-Si-bond respectively. The large band around 1050 cm-1 found on BSP filler was attribute to the –Si-OH group which later this band will disappear after the surface modification. This evidenced that bonding between γ-APS treated BSP with PP/NBRr matrices. Morphological study supported this finding which BSP filler treated with γ-APS has improved the adhesion between BSP filler and PP/NBRr matrices.

Effect of nanofiller on the ageing of rubber seal materials under gamma irradiation

2019 ◽  
Vol 53 (15) ◽  
pp. 2065-2076 ◽  
Author(s):  
Elham M Hegazi ◽  
HM Eyssa ◽  
AA Abd El-Megeed
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Gamma Irradiation ◽  
Infrared Analysis ◽  
Butadiene Rubber ◽  
Rubber Seal ◽  
Acrylonitrile Butadiene Rubber ◽  
High Gamma ◽  
Rubber Nanocomposites ◽  
Scanning Electron

The effect of high gamma irradiation and nanosilica on the structure and mechanical properties of the acrylonitrile butadiene rubber seal materials was investigated in this study. Acrylonitrile butadiene rubber nanocomposites containing (25, 50 and 75 phr) unmodified and modified nanosilica were irradiated at different doses (0, 0.2, 0.4, 0.6, 0.8, 1 MGy). The dispersion of nanosilica-based filler in acrylonitrile butadiene rubber was investigated by scanning electron microscope. Fourier-transform infrared analysis, swelling, crosslinking, mechanical and the thermal resistance properties of acrylonitrile butadiene rubber nanocomposites were investigated. From the results, it is clear that with modified nanosilica, acrylonitrile butadiene rubber phase crosslinking is accelerated with increasing γ-doses compared to unmodified nanosilica and seems to enhance physical, mechanical and the thermal properties of the rubber. The surface of the acrylonitrile butadiene rubber nanocomposites was investigated by scanning electron microscope and found better dispersion for acrylonitrile butadiene rubber with 25 phr of modified nanosilica at 0.6 MGy. The compression set of the results indicated that 25 phr modified nanosilica has best properties under high gamma irradiation.

Techniques for preparing the Lolium perenne coleorhiza for scanning electron microscope evaluation

1992 ◽  
Vol 50 (1) ◽  
pp. 766-767
Author(s):  
Susan B.G. Debaene ◽  
John S. Gardner ◽  
Phil S. Allen
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Lolium Perenne ◽  
Morphological Study ◽  
Root Hairs ◽  
Inner Pressure ◽  
Water Potentials ◽  
Radicle Emergence ◽  
Standard Fixation ◽  
Scanning Electron

The coleorhiza is a nonvascular sheath that encloses the embryonic radicle in Poaceae, and is generally the first tissue to emerge during germination. Delicate hairlike extensions develop from some coleorhiza cells prior to radicle emergence. Similar to root hairs, coleorhiza hairs are extremely sensitive to desiccation and are damaged by exposure to negative water potentials. The coleorhiza of Lolium perenne is somewhat spherical when first visible, after which a knob forms at a right angle to the caryopsis due to inner pressure from the elongating radicle. This knob increases in length until the radicle finally punctures the coleorhiza. Standard fixation procedures cause severe desiccation of coleorhiza cells and hairs, making morphological study of the coleorhiza difficult. This study was conducted to determine a more successful process for coleorhiza preservation.

scholarly journals Effect of Nanoparticle Surface Modification and Filling Concentration on Space Charge Characteristics in TiO2/XLPE Nanocomposites

2016 ◽  
Vol 2016 ◽  
pp. 1-10 ◽  
Author(s):  
Youyuan Wang ◽  
Kun Xiao ◽  
Can Wang ◽  
Lijun Yang ◽  
Feipeng Wang
Keyword(s):  
Surface Modification ◽  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Space Charge ◽  
Volume Resistivity ◽  
Charge Accumulation ◽  
Nanoparticle Surface ◽  
Nanoparticle Surface Modification ◽  
Resistivity Testing ◽  
Scanning Electron

This paper focuses on the space charge characteristics in TiO2/cross-linked polyethylene (XLPE) nanocomposites; the unmodified and modified by dimethyloctylsilane (MDOS) TiO2 nanoparticles were added to XLPE matrix with different mass concentrations (1 wt%, 3 wt%, and 5 wt%). The scanning electron microscope (SEM) showed that the MDOS coupling agent could improve the compatibility between TiO2 nanoparticles and XLPE matrix to some extent and reduce the agglomeration of TiO2 nanoparticles compared with unmodified TiO2 nanoparticles; the volume resistivity testing indicated that the volume resistivity of TiO2/XLPE nanocomposites was higher than Pure-XLPE and increased with the increase of filling concentrations. According to the pulsed electroacoustic (PEA) measurements, it was concluded that the space charge accumulation was suppressed by filling TiO2 nanoparticles and the distribution of electric field in samples was improved greatly. In addition, it was found that the injection of homocharge was more obvious in MDOS-TiO2/XLPE than that in UN-TiO2/XLPE and the homocharge injection decreased with the increase of filling concentration.

Curing, Tensile and Morphological Properties of Treated Bentonite Filled EPDM Composite

2013 ◽  
Vol 844 ◽  
pp. 285-288
Author(s):  
Mathialagan Muniyadi ◽  
Hanafi Ismail
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Interfacial Adhesion ◽  
Morphological Properties ◽  
Morphological Observation ◽  
Curing Time ◽  
Roll Mill ◽  
Ethylene Propylene Diene Terpolymer ◽  
Scanning Electron

The effect of in-situ addition of Bis-(3-triethoxysilylpropyl) tetrasulphide (TESPT) on the curing, tensile and morphological properties of bentonite filled ethylene propylene diene terpolymer (EPDM) composite were investigated. EPDM/Bt compounds, with and without TESPT were prepared using laboratory scale two-roll mill, containing various Bt loading. In the presence of TESPT, the curing time (t90) and scorch time (tS2) of EPDM/Bt composites were decreased whereas, the maximum (MH) and minimum (ML) torques were increased. Tensile properties of EPDM/TESPT/Bt composites were also improved as compared to EPDM/Bt composites. Morphological observation through scanning electron microscope (SEM) proves the enhancement of interfacial adhesion between EPDM and Bt in the presence of TESPT.

A SERIAL SECTIONING TECHNIQUE FOR MORPHOLOGICAL STUDY OF COMPLEX CHITINOUS STRUCTURES WITH THE SCANNING ELECTRON MICROSCOPE

1977 ◽  
Vol 109 (3) ◽  
pp. 477-479
Author(s):  
J. J. B. Smith ◽  
W. G. Friend
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Morphological Study ◽  
Efficient Production ◽  
Serial Sections ◽  
Serial Sectioning ◽  
3 Dimensional ◽  
Internal Surfaces ◽  
Conventional Electron Microscopy ◽  
Scanning Electron

Special techniques are necessary to study the morphology of complex chitinous structures such as insect mouthparts. Many of the details are beyond the resolution of light microscopy, and the methods of conventional electron microscopy do not include the efficient production of serial sections for reconstruction. Although the scanning electron microscope (SEM) permits detailed observation of 3-dimensional surfaces, it cannot see internal surfaces and under complex folds, nor can it readily show the thickness of solid structures. To study the details of the stylet tips of the bug Rhodnius prolixus (Stål) several techniques were tried. Initially, specimens had been embedded in paraffin wax, sectioned, dewaxed, and prepared for the scanning electron microscope. Because of difficulties in sectioning the hard stylets and poor preservation of fine structure, this method was abandoned in favour of one using thick sections (2 μm) of material embedded in a mixture of Epon and Araldite.

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