scholarly journals Experimental acrylonitrile butadiene styrene and polyamide evisceration implant: a rabbit clinical and histopathology study

2016 ◽  
Vol 68 (5) ◽  
pp. 1168-1176 ◽  
Author(s):  
D.C. Gomes Júnior ◽  
E.J. Nassar ◽  
F.A. Dórea Neto ◽  
A.E. Lima ◽  
E.F. Martins Filho ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Inflammatory Infiltrate ◽  
Acrylonitrile Butadiene Styrene ◽  
Histopathological Changes ◽  
Tissue Integration ◽  
Histopathological Evaluation ◽  
Ultrastructural Damage ◽  
New Zealand Rabbits ◽  
Scanning Electron ◽  
Butadiene Styrene

ABSTRACT The purpose of this study was to evaluate acrylonitrile butadiene styrene (ABS) and polyamide implants in rabbits submitted to evisceration at the macroscopic and microstructure level and to assess clinical response and histopathological changes as well. For the experimental study implants of 12mm diameter were prepared by rapid prototyping, weighed and the outer and inner surfaces evaluated macroscopically and by electron microscopy. In addition, a compression test was performed and ultrastructural damage was then determined. After evisceration of the left eyeball, nine New Zealand rabbits received ABS implants and nine others received polyamide implants. The animals were assessed daily for 15 days after surgery and every seven days until the end of the study (90 days). Histopathological evaluation was performed at 15, 45 and 90 days after surgery. The ABS implants weighed approximately 0.44g, while the polyamide ones weighed 0.61g. Scanning electron microscopy demonstrated that the ABS implants had regular-sized, equidistant micropores, while the polyamide ones showed micropores of various sizes. The force required to fracture the ABS implant was 14.39 ±0.60 Mpa, while for the polyamide one, it was 16.80 ±1.05 Mpa. Fifteen days after surgery, we observed centripetal tissue infiltration and scarce inflammatory infiltrate. Implants may be used in the filling of anophthalmic cavities, because they are inert, biocompatible and allow tissue integration.

Mechanical and Wear Properties of Acrylonitrile Butadiene Styrene Polymer Composites

2013 ◽  
Vol 747 ◽  
pp. 299-302 ◽  
Author(s):  
Volkan Babat ◽  
Münir Taşdemir
Keyword(s):  
Electron Microscopy ◽  
Mechanical Properties ◽  
Scanning Electron Microscopy ◽  
Polymer Composites ◽  
Acrylonitrile Butadiene Styrene ◽  
Wear Properties ◽  
Glass Spheres ◽  
Wear Friction ◽  
Scanning Electron ◽  
Butadiene Styrene

In the present work, acrylonitrile butadiene styrene based composites filled with aluminum, boron carbide and glass spheres particles were prepared. Fillers contents in the ABS were 5, 10, 15, and 20 wt%. The mechanical and wear properties of the polymer composites were investigated. The structural properties of the composites are characterized using a scanning electron microscopy. Keyword: Acrylonitrile Butadiene Styrene, wear, friction, mechanical properties, talc.

Flow Behavior of Composites of PA6/Kaolin Nanoparticles

2014 ◽  
Vol 703 ◽  
pp. 45-50
Author(s):  
Chao Wang ◽  
Ying Chun Li ◽  
Guo Sheng Hu
Keyword(s):  
Mechanical Properties ◽  
Flow Behavior ◽  
Acrylonitrile Butadiene Styrene ◽  
Nylon 6 ◽  
Mechanical Analysis ◽  
Melt Blending ◽  
Styrene Maleic Anhydride ◽  
The Impact ◽  
Scanning Electron ◽  
Butadiene Styrene

The blends of Nylon 6/Acrylonitrile-Butadiene-Styrene (ABS) with styrene-maleic anhydride (SMA) was prepared by melt blending as the compatilizer. Mechanical properties, dynamic mechanical analysis (DMA) and fracture appearances were determined. It was found that the impact and tensile strength firstly increased and then decreased along with the increase of the SMA content. The properties reached maximum values when the content of SMA was 1.5%. The results of DMA and scanning electron microscope (SEM) indicated that the addition of SMA can effectively enhance the compatibility of Nylon 6 and ABS. Key words: Nylon 6, ABS, SMA, blends, modification

Application of SMA on the Alloy of Nylon6/ABS

2012 ◽  
Vol 501 ◽  
pp. 57-63
Author(s):  
Chao Wang ◽  
Ying Chun Li ◽  
Zhen Xing Yao
Keyword(s):  
Tensile Strength ◽  
Electron Microscope ◽  
Mechanical Characteristics ◽  
Acrylonitrile Butadiene Styrene ◽  
Mechanical Analysis ◽  
Melt Blending ◽  
Styrene Maleic Anhydride ◽  
The Impact ◽  
Scanning Electron ◽  
Butadiene Styrene

The alloy of Nylon6/Acrylonitrile-Butadiene-Styrene (ABS) with styrene-maleic anhydride (SMA) was prepared by melt blending as the compatilizer. Mechanical characteristics, dynamic mechanical analysis (DMA) and fracture appearances were determined. It was found that the impact and tensile strength firstly increased and then decreased along with the increase of the SMA content. The properties reached maximum values when the content of SMA was 2%. The results of DMA and scanning electron microscope (SEM) indicated that the addition of SMA can effectively enhance the compatibility of Nylon6 and ABS.

The performance and morphology of PMMA/SAN/ABS blends

2016 ◽  
Vol 36 (3) ◽  
pp. 321-327 ◽  
Author(s):  
Dan Chen ◽  
Fupeng Zhu ◽  
Tingting Zhou ◽  
Mingyao Zhang ◽  
Huixuan Zhang
Keyword(s):  
Electron Microscopy ◽  
Graft Copolymers ◽  
Cumene Hydroperoxide ◽  
Acrylonitrile Butadiene Styrene ◽  
Melt Blending ◽  
Seeded Emulsion Polymerization ◽  
Transmission Electron ◽  
Styrene Acrylonitrile ◽  
Dodecyl Mercaptan ◽  
Butadiene Styrene

Abstract Acrylonitrile-butadiene-styrene (ABS) graft copolymers were synthesized via seeded emulsion polymerization techniques by grafting styrene (St) and acrylonitrile (AN) on polybutadiene (PB) particles. Poly (methyl methacrylate) (PMMA)/styrene-acrylonitrile (SAN)/ABS blends were prepared by melt blending ABS graft copolymers with PMMA and SAN resins. The properties, morphology and grafted chains behaviors of PMMA/SAN/ABS blends were investigated. The results showed that with the increase of the ratio of PMMA/SAN, the toughness of PMMA/SAN/ABS blends slightly decreased, the transmittance first increased and then decreased, and tensile strength was not dependent on the ratio of PMMA/SAN. The evolution of impact strength of the blends was similar with the tendency of grafted degree (GD) with the increase of cumene hydroperoxide (CHP) and tert-dodecyl mercaptan (TDDM). From transmission electron microscopy (TEM), it was found that ABS graft copolymers were uniformly dispersed in PMMA/SAN matrix.

Morphology and Crystallization Behavior of Toughened Poly(Trimethylene Terephthalate) Blends with Acrylonitrile-Butadiene-Styrene

2013 ◽  
Vol 791-793 ◽  
pp. 240-243
Author(s):  
Kun Yan Wang
Keyword(s):  
Crystallization Behavior ◽  
Acrylonitrile Butadiene Styrene ◽  
Screw Extruder ◽  
Differential Scanning Colorimetry ◽  
The Matrix ◽  
Twin Screw ◽  
Trimethylene Terephthalate ◽  
Partical Size ◽  
Scanning Electron ◽  
Butadiene Styrene

Poly (trimethylene terephthalate) (PTT)/acrylonitrile-butadiene-styrene (ABS) blends have been prepared in composition with various ratios using the twin screw extruder approach. Their morphologies and crystallization behavior were investigated. Typical sea-island morphologies were observed by scanning electron microscopy. The partical size of ABS increased as the content of ABS increasing. Differential scanning colorimetry (DSC) experiments showed that the melting point of pure PTT and their blends was almost constant. The presence of the ABS increased the crystallinity of the matrix in PTT/ABS blends with ABS content less than 30wt%.

New Role of Antibody in Bacterial Isolation

2012 ◽  
Vol 95 (1) ◽  
pp. 216-221
Author(s):  
Xizhi Xiao ◽  
Yu Chen ◽  
Mingjun Deng ◽  
Hongwei Gao ◽  
Zhenxing Wu ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Enterobacter Cloacae ◽  
Bacterial Isolation ◽  
Chromogenic Medium ◽  
Rabbit Polyclonal Antibody ◽  
Vitek 2 ◽  
New Zealand Rabbits ◽  
Scanning Electron

Abstract To eliminate the interference caused by Pseudomonas aeruginosa in the isolation of Salmonella, a rabbit polyclonal antibody against P. aeruginosa was prepared by inoculating four New Zealand rabbits with the pathogen. The antiserum was purified using saturated ammonium sulfate and added into Rappaport-Vassiliadis medium with soya (RVS) broth and Muller-Kauffmann tetrathionate novobiocin broth (MKTTn broth) to evaluate whether it could inhibit the growth of P. aeruginosa. Observations by scanning electron microscopy demonstrated that P. aeruginosa was attacked and destroyed by the antibody when incubated for 10 min at 37°C. The activity of the antibody was also effective against 11 other strains of P. aeruginosa. Twenty-six strains of Salmonella were mixed with P. aeruginosa in RVS and MKTTn broth at 37°C for 12 h, respectively, and the cultures were plated on Salmonella chromogenic medium (SCM; Oxoid, Basingstoke, UK). Only Salmonella grew on SCM; five colonies were randomly selected for identification by VITEK 2 (bioMérieux, Lyon, France). Additionally, when mixed with two strains of Enterobacter cloacae (ATCC 700323 and YG001), the prepared antibody did not affect the growth of E. cloacae. The results demonstrated that the microbicidal activity of the antibody did not affect the tested Salmonella sp. or E. cloacae strains. Therefore, the antibody generated could be used to increase the accuracy of Salmonella isolation.

Effects of organoclay on morphology and mechanical properties in acrylonitrile-butadiene-styrene/polyamide 6/ organoclay ternary nanocomposites

e-Polymers ◽  
2012 ◽  
Vol 12 (1) ◽  
Author(s):  
Wei Yan ◽  
Shuhao Qin ◽  
Jianbing Guo, ◽  
Min He ◽  
Minmin Zhang ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Mechanical Properties ◽  
Domain Size ◽  
Acrylonitrile Butadiene Styrene ◽  
Polyamide 6 ◽  
X Ray Diffraction ◽  
Melt Mixing ◽  
Transmission Electron ◽  
Morphology And Mechanical Properties ◽  
Butadiene Styrene

AbstractIn this article, polyamide 6(PA6)/organoclay masterbatch were prepared by melt mixing, and then acrylonitrile-butadiene-styrene(ABS)/polyamide 6(PA6)(70/30,w/w) nanocomposites were prepared by the melt mixing of PA6, ABS and organoclay. The effect of organoclay platelets on morphology and mechanical properties of ABS/PA6/organoclay ternary nanocomposites had been investigated by wide angle X-ray diffraction (WAXD) and transmission electron microscopy (TEM), scanning electron microscopy (SEM) and mechanical properties testing. Morphology analysis revealed that organoclay platelets were selectively dispersed and exfoliated in PA6 phase, but some were located in interface of PA6 and ABS phase. The droplet size of PA6 dispersed phase were gradually reduced less than 4 phr organoclay, then the dispersed domain size became unchanged with the addition of various organoclay. It suggested the organoclay can compatibilize the ABS/PA6 blend nanocomposite. Moreover, the flexural strength and modulus increase with increasing organoclay content, but the tensile strength became maximal at 3 phr organoclay. The organoclay has no effect on impact strength of ABS/PA6 blend nanocomposite.

Preparation of graphene and its application in polycarbonate/acrylonitrile-butadiene-styrene composites

2018 ◽  
Vol 38 (4) ◽  
pp. 399-407 ◽  
Author(s):  
Yueshu Li ◽  
Aiqing Wang ◽  
Lingli Meng ◽  
Nannan Jiang
Keyword(s):  
Electron Microscopy ◽  
Thermal Stability ◽  
Chemical Reduction ◽  
Acrylonitrile Butadiene Styrene ◽  
Thermal Reduction ◽  
X Ray Diffraction ◽  
Mechanical Reinforcement ◽  
Styrene Copolymers ◽  
Transmission Electron ◽  
Butadiene Styrene

AbstractGraphene was prepared by the reduction of graphene oxide through chemical, thermal, and microwave methods. The morphology and structure of graphene obtained using different reduction processes have been characterized by scanning electron microscopy, transmission electron microscopy, X-ray diffraction, and Raman spectra. Polycarbonate/acrylonitrile-butadiene-styrene copolymers were modified with the addition of the as-prepared graphene. Electrical resistivity and tensile strength as well as thermal stability of composites have been investigated. The results reveal that graphene from chemical reduction is well compatible with composites and suitable for the enhancement of thermal stability. Graphene prepared from thermal reduction and microwave reduction are applicable for mechanical reinforcement and antistatic fields, respectively.

The Tensile Properties of Glass Fiber Reinforced ABS Composites Filled with SiO2

2011 ◽  
Vol 295-297 ◽  
pp. 641-643 ◽  
Author(s):  
Jun Bao
Keyword(s):  
Tensile Strength ◽  
Glass Fiber ◽  
Tensile Properties ◽  
Tensile Modulus ◽  
Acrylonitrile Butadiene Styrene ◽  
Glass Content ◽  
Scanning Electron Micrographs ◽  
Glass Fiber Reinforced ◽  
Scanning Electron ◽  
Butadiene Styrene

In this study acrylonitrile-butadiene-styrene (ABS) terpolymer was reinforced with glass fiber. The effects of glass content on the tensile properties of the composites were examined. Increasing the glass content in the ABS matrix from 10 wt% to 30 wt% resulted in improved tensile strength and tensile modulus. To obtain a strong interaction at the interface, SiO2 at varying concentrations was introduced into the GF composite. The incorporation and increasing amount of SiO2 in the composites increased tensile properties of the ABS/ SiO2/GF systems due to the improved adhesion at the interface,. These results were also supported by scanning electron micrographs of the ABS/ SiO2/GF composites, which exhibited an improved adhesion between the GFs and the ABS matrix.

scholarly journals Renal myxoboliosis of Metynnis hypsauchen in the Brazilian Amazon: morphological and histopathological aspects

2020 ◽  
Vol 42 ◽  
pp. e50267
Author(s):  
Jhonata Eduard Farias de Oliveira ◽  
Rayline Thaimenne Alves Figueredo ◽  
Maria do Perpétuo Socorro Progene Vilhena ◽  
José Francisco Berrêdo ◽  
José Ledamir Sindeaux-Neto ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Natural Habitat ◽  
Parasite Load ◽  
Brazilian Amazon ◽  
Renal Tubules ◽  
Histopathological Changes ◽  
Renal Functions ◽  
High Parasite ◽  
Hematoxylin Eosin ◽  
Scanning Electron

In their natural habitat, fish are constantly threatened by icthyoparasites, notably those from the Phylum Cnidaria, Hatschek, 1888, represented by species of the Myxozoa, responsible for infections in fish that cause complications to their health that can lead to death. Among these parasites, the genus Myxobolus Butschli, 1882 is responsible for the largest number of infections described in fishes from the Americas. This study describes the morphological and histopathological aspects of parasitism by Myxobolus sp. in specimens of Metynnis hypsauchen, obtained from the Capim river, in the municipality of Ipixuna do Pará, Pará, Brazil. During the months of August and March, 2018, 20 animals were captured, euthanized and autopsied. With the aid of a stereomicroscope an external and internal investigation was performed on the animals for the purpose of finding lesions or parasitic cysts, followed by confirmation of infection in Light Microscopy (ML). Cysts and Fragments from parasitized tissues were processed using techniques for histology and Scanning Electron Microscopy (SEM). For histology they were stained with Hematoxylin-Eosin (H-E) and Ziehl-Neelsen and for SEM Micrographs were captured, using equipment from the Museu Paraense Emílio Goeldi. The prevalence of parasitism was 60% (12/20) of the specimens, and the cysts were in the epithelium and lumen of the renal tubules, causing histopathological changes. The characteristics of the parasite spores are those associated with the genus Myxobolus, with an ellipsoid format, two polar capsules and a sporoplasm region. It was possible to confirm a high parasite load of Myxobolus, with compromised renal functions. This study is the first to describe Myxospore in Metynnis hypsauchen.

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