Morphology of Electrospun Natural Rubber with Acrylonitrile-Butadiene-Styrene

2009 ◽  
Vol 79-82 ◽  
pp. 1583-1586 ◽  
Author(s):  
Sarawuth Sithornkul ◽  
Poonsub Threepopnatkul
Keyword(s):  
Natural Rubber ◽  
Fiber Diameter ◽  
Electrospun Fiber ◽  
Acrylonitrile Butadiene Styrene ◽  
Solution Concentration ◽  
Electrospun Membrane ◽  
Sem Images ◽  
Electrospinning Technique ◽  
Tetramethylthiuram Disulfide ◽  
Butadiene Styrene

This research was aimed to study the electrospinning of natural rubber (NR)-acrylonitrile butadiene styrene (ABS) blend. The NR used in this research was compounded in a torque rheometor, with stearic acid, wingstay-L, dibenzothiazoledisulfide (MBTS), tetramethylthiuram disulfide (TMTD) and sulfur, respectively. The compounded NR was blended with ABS by dissolving them in tetrahydrofuran (THF), concentration of solution included 5, 10, and 15 w/w%. The ratio of NR/ABS was varied by varying the content of ABS of 20, 30, 40 and 50 wt%. Then NR/ABS electrospun membrane was built up by electrospinning technique with high voltage 15 kV, flow rate 30 ml/h, collector distance 15, 20 and 25 cm and collected the electrospun fiber on rotating circular at 1000 rpm. The morphology of electrospun fibers were characterized by scanning electron microscope (SEM). SEM images showed that NR/ABS membranes had higher porosity with decreasing ABS contents. Decreasing ABS contents, decreasing solution concentration and increasing collector distance decreased fiber diameter of electrospun NR/ABS.

Effect of Concentration on Electrospinning Oil Sorptive Fiber

2010 ◽  
Vol 160-162 ◽  
pp. 1611-1616
Author(s):  
Yan Ping Liu ◽  
Hua Bin Xu ◽  
Yi Bing Deng
Keyword(s):  
Fiber Diameter ◽  
Removal Rate ◽  
Electrospun Fiber ◽  
Scaling Law ◽  
Great Influence ◽  
Solution Concentration ◽  
Sorption Process ◽  
Processing Technique ◽  
Order Kinetic ◽  
Sorption Ability

Electrospinning is a convenient method used in the preparation of ultrafine oil sorptive fibers based on Ethylene-propylene-diene (EPDM), Electrospun fiber diameter, varying in large from micrometer to nanometer, mainly depends upon the solution concentration, which has great influence on this function fiber’s sorption ability. The non-linear relation between mean fiber diameter (d) and solution concentration (C) was investigated and it follows a simple scaling law in the form . This relationship can be used to predict the target fiber diameter and guide the processing technique. The effects of various C on oil sorption ability were investigated in a batch-sorption technique. A comparison of the kinetic models, showed that the removal rate fit the first order kinetic model well, which suggested the sorption process is rapid, can reach equilibrium within a short time.

Influences of the phenolic curative content and blend proportions on the properties of dynamically vulcanized natural rubber/acrylonitrile-butadiene-styrene blends

2015 ◽  
Vol 132 (36) ◽  
pp. n/a-n/a ◽  
Author(s):  
Pinyo Wongthong ◽  
Charoen Nakason ◽  
Qinmin Pan ◽  
Garry L. Rempel ◽  
Suda Kiatkamjornwong
Keyword(s):  
Natural Rubber ◽  
Acrylonitrile Butadiene Styrene ◽  
Butadiene Styrene

Fabrication and Characterization of Polycaprolactone (PCL)/Gelatin Electrospun Fibers

2014 ◽  
Vol 554 ◽  
pp. 52-56 ◽  
Author(s):  
Mim Mim Lim ◽  
Naznin Sultana ◽  
Azli Bin Yahya
Keyword(s):  
Fiber Diameter ◽  
Electrospun Fiber ◽  
Weight Ratio ◽  
Processing Parameters ◽  
Electrospun Fibers ◽  
Average Fiber Diameter ◽  
Polymer Blending ◽  
Electrospinning Technique ◽  
Sem Image

Over the past few decades, there has been considerable interest in developing electrospun fibers by using electrospinning technique for various applications. Polymer blending is one of the most effective methods in providing desired properties. In this study, synthetic polymer polycaprolactone (PCL) was blended together with natural polymer gelatin where both of them have different properties. It is done by using electrospinning technique. 10 %w/v and 14 %w/v PCL/gelatin electrospun fibers were successfully electrospun with different weight ratio. Processing parameters were set constant in this study and only solution parameters were altered. The optimized electrospun fiber formed was 14 %w/v PCL/gelatin 70:30 with average fiber diameter of 246.30 nm. No beaded fiber was formed in this scanning electron microscope (SEM) image. The result obtained also showed that by increasing the overall polymeric concentration of PCL/gelatin, average fiber diameter decreases. Fiber diameter was also found decreasing with the increase of the concentration of gelatin in the same concentratoin of PCL/gelatin blended electrospun fiber. Blending of PCL and gelatin in different weight ratio had provided different properties of electrospun fibers. It is believed that blended electrospun fibers can be used for biomedical applications.

scholarly journals Antimicrobial PAA/PAH Electrospun Fiber Containing Green Synthesized Zinc Oxide Nanoparticles for Wound Healing

Materials ◽  
2021 ◽  
Vol 14 (11) ◽  
pp. 2889
Author(s):  
Marina Bandeira ◽  
Bor Shin Chee ◽  
Rafaele Frassini ◽  
Michael Nugent ◽  
Marcelo Giovanela ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Wound Healing ◽  
Zinc Oxide ◽  
Zinc Oxide Nanoparticles ◽  
Electrospun Fiber ◽  
Ilex Paraguariensis ◽  
Resistant Bacteria ◽  
Oxide Nanoparticles ◽  
Sem Images ◽  
Electrospinning Technique

Wound infections are the main complication when treating skin wounds. This work reports a novel antimicrobial material using green synthesized zinc oxide nanoparticles (ZnONPs) incorporated in polymeric fibers for wound healing purposes. ZnONPs are a promising antimicrobial nanomaterial with high activity against a range of microorganisms, including drug-resistant bacteria. The electrospun fibers were obtained using polyacrylic acid (PAA) and polyallylamine hydrochloride (PAH) and were loaded with ZnONPs green synthesized from Ilex paraguariensis leaves with a spherical shape and ~18 nm diameter size. The fibers were produced using the electrospinning technique and SEM images showed a uniform morphology with a diameter of ~230 nm. EDS analysis proved a consistent dispersion of Zn in the fiber mat, however, particle agglomerates with varying sizes were observed. FTIR spectra confirmed the interaction of PAA carboxylic groups with the amine of PAH molecules. Although ZnONPs presented higher antimicrobial activity against S. aureus than E. coli, resazurin viability assay revealed that the PAA/PAH/ZnONPs composite successfully inhibited both bacteria strains growth. Photomicrographs support these results where bacteria clusters were observed only in the control samples. The PAA/PAH/ZnONPs composite developed presents antimicrobial activity and mimics the extracellular matrix morphology of skin tissue, showing potential for wound healing treatments.

Preparation and Properties of the PTT/ABS/SCF Composites

2010 ◽  
Vol 150-151 ◽  
pp. 838-841 ◽  
Author(s):  
Ming Tao Run ◽  
Hong Sheng Zhang ◽  
Xin Li ◽  
Fu Yuan Cui
Keyword(s):  
Fracture Surface ◽  
Acrylonitrile Butadiene Styrene ◽  
Capillary Rheometer ◽  
Matrix Resin ◽  
Sem Images ◽  
Plastic Fluid ◽  
The Matrix ◽  
Impact Tester ◽  
Short Carbon ◽  
Butadiene Styrene

The morphological, mechanical and rheological properties of poly(trimethylene terephthalate)(PTT)/maleinized acrylonitrile-butadiene-styrene (ABS-g-MAH)/short carbon fiber (SCF) composites were investigated by the scanning electron microscopy(SEM), universal tester, impact tester and capillary rheometer, respectively. The SEM images of the composites’ fracture surface show that the fracture surface is rough and SCF are randomly dispersed in the matrix resin, and there is a good interfacial interaction between SCF and PTT. The composites show the maximum tensile strength when adding 10-23% SCF into PTT/ABS blends. The rheology results show that the composites melt are pseudo-plastic fluid, and the melt apparent viscosity of the PTT/ABS/SCF composites increases with increasing SCF content.

Control of Mechanical Properties and Permeability of Electrospun Natural Rubber with Different Composite Systems

2010 ◽  
Vol 93-94 ◽  
pp. 619-622 ◽  
Author(s):  
Sarawuth Sithornkul ◽  
Poonsub Threepopnatkul
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Natural Rubber ◽  
Testing Machine ◽  
Acrylonitrile Butadiene Styrene ◽  
Optimum Conditions ◽  
Fiber Mats ◽  
Vapour Permeability ◽  
Composite Systems ◽  
Butadiene Styrene

The electrospun natural rubber (NR) with two different components namely: acrylonitrile butadiene styrene (ABS) and carbon black (CB) have been extensively studied. The main objective was to investigate the mechanical properties and permeability dependency of NR/ABS and NR/CB as well as its contents. NR/CB was compounded by torque rheometer (Brabender) while ABS was dissolved with NR using tetrahydrofuran (THF) as its solvent. Sulfur was used as the vulcanizing agent in both systems. Mechanical properties were evaluated by universal testing machine and permeability was observed by water vapour permeability. The optimum conditions for electrospun NR/ABS and NR/CB non-woven mats were as follows: flow rate 30 ml/h, voltage 15 kV, collector distance 20 cm and collected on rotating circular plate at 1000 rpm. The results of mechanical properties showed that for electrospun NR/CB fiber membranes, the higher the CB loading it had, the lower its tensile strength and elongation it would be. Whilst electrospun NR/ABS fiber mats, the elongation behavior was affected by the ABS loading but not the tensile strength. For permeability, NR/CB was shown to possess relatively higher permeability than the NR/ABS non-woven mats.

scholarly journals Tensile and Micro Structural Properties Analysis of Biodegradable Polymer Blends

2019 ◽  
Vol 8 (2) ◽  
pp. 1866-1869 ◽  
Keyword(s):  
Flexural Modulus ◽  
Testing Machine ◽  
Acrylonitrile Butadiene Styrene ◽  
Cassava Starch ◽  
Poly Lactic Acid ◽  
Screw Extruder ◽  
Sem Images ◽  
Universal Testing ◽  
Twin Screw ◽  
Butadiene Styrene

poly lactic acid (PLA), Acrylonitrile butadiene styrene (ABS) and tapioca cassava starch powder (TCSP) were melt blended using twin screw extruder. Mechanical properties, which are tensile strength, young’s modulus, % elongation and flexural strength Vs. flexural modulus determined by the help of Universal testing machine (INSTRON UTM-3969) .Morphological of PLA/ABS /TCSP blends was investigated by the help of scanning electron microscopy (SEM), the SEM images of (b-d) shows spherical morphology on the tensile fractured

Preparation of Biodegradable Poly(lactic Acid) Electrospun Membrane with Decreased Pore Size by Post Heat Treatment

2013 ◽  
Vol 594-595 ◽  
pp. 260-269
Author(s):  
Lin Li ◽  
Raed Hashaikeh ◽  
Hassan A. Arafat
Keyword(s):  
Lactic Acid ◽  
Pore Size ◽  
Solution Concentration ◽  
Poly Lactic Acid ◽  
Electrospun Membrane ◽  
Electrospinning Technique ◽  
Environment Friendly ◽  
Small Pore ◽  
Fiber Size ◽  
Biodegradable Poly

Environment-friendly membranes were fabricated from poly (lactic acid) (PLA) via the electrospinning technique. PLA is selected due to its biodegradability and thermoplastic. Firstly, the electrospinning parameters that affect the membrane structure and fibers morphology were identified. These include the polymer solution concentration, flow rate and salt additive. It was found that low concentration lead to smaller fiber size but with beads, and lower flow rates leading to thinner and uniform fibers, while salt additives limited the formation of beads. It was found that hot pressing only is preferred from the view of small pore size, large porosity and high contact angle.

scholarly journals Fabrication and characterization of polyvinylidene fluoride nanofibers prepared by electrospinning technique

2021 ◽  
Vol 63 (1) ◽  
pp. 49-54
Author(s):  
Thi Thu Thuy Nguyen ◽  
◽  
The Huu Nguyen ◽  
Thi Hai Trinh ◽  
Thi Thu Trang Bui ◽  
...  
Keyword(s):  
Applied Voltage ◽  
Feed Rate ◽  
Polyvinylidene Fluoride ◽  
Fiber Diameter ◽  
Average Diameter ◽  
Solution Concentration ◽  
Solvent Mixture ◽  
Gas Filtration ◽  
Hydrophobic Property ◽  
Electrospinning Technique

Electrospinning is a technique that produces polymer fibers with diameters in the submicron range. In this study, some electrospinning parameters affecting the morphology, average diameter, and distribution of the diameter of polyvinylidene fluoride (PVDF) fibers were investigated by using scanning electron microscopy (SEM). These electrospinning parameters include solution concentration, applied voltage, the feed rate of solution, distance from the needle to the collector, and solvent mixture. PVDF fibers have a fine structure, narrow distribution of fiber diameter, and average fiber diameter of 736 nm at a solution concentration of 20 wt%, solvent mixture with 60/40 weight of N,N-dimethylacetamide (DMAc) and acetone (Ac), an applied voltage of 11 kV, the feed rate of 1 ml/h, and the distance from the needle to the collector of 17 cm. The hydrophobic property and tensile strength of the PVDF nanofiber membrane were also reported. PVDF nanofibers have the potential to apply in several areas such as water or gas filtration, catalyst, lithium battery, ect.

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