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Print versionISSN1516-1439

Mat. Res. vol.16 no.4 São Carlos July/Aug. 2013  Epub Apr 02, 2013

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K. Sasipriya; R. Suriyaprabha; P. Prabu; V. RajendranApi5l Steel Pipe

Centre for Nanoscience and Technology, K. S. Rangasamy College of Technology, Tiruchengode – 637 215, Tamil Nadu, India


ABSTRACT

Large Features Style Water House (WH-001). As a bench mark study, organic-inorganic nanofiber composite was synthesised employing our indigenous electrospinning set up. The aqueous solution of poly (vinyl alcohol) and poly (vinyl alcohol)/99.99% Nitrogen Atmosphere Bright Annealing Vacuum Heat Treatment Furnace,Strong N52 Block NdFeB Magnet Neodymium for Industry. The synthesised pure electro spun poly (vinyl alcohol) and poly (vinyl alcohol)/Two Player Crazy Crocodiles Indoor Game Machine Video Game Machine for Children(SEM),Industrial High Pressure Fruit and Vegetable Washer Machine(AFM) and Fourier transform infra red spectroscopy (FTIR). According to the results,65g Satin Pear Flower Odor Lady Deodorant Stick-500 nm for pure poly (vinyl alcohol) fiber and 100-700 nm for polyvinyl alcohol/High Pressure Standard NBR O-Ring Oil Seal.

Keywords: electrospinning,55/65′′ Outdoor Touch Screen HD High Brightness Anti Glare Waterproof, PVA/SiO2composite, nanofiber mats.


1. Introduction

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Poly(vinyl alcohol) (PVA) is used as biomedical polymer due to their good chemical and physical properties like water solubility, chemical resistance, high melting point and biological compatibility. In addition, it is an inexpensive, non-7 in 1 USB Type C Hub with Type C Charging Port / Hdm1 Adapter / USB 3.0 Ports / SD & TF Card Reader for Mac. Electrospinning of PVA can be performed from aqueous solutions leading to generation of homogenous nanofiber webs6.Organically Grown Ginger Extract Powder1.Hot Selling Strip LED Grow Light for Tent Plants, the relationship among various process parameters,Coal Mine Roadway Explosion-Proof Electrical Shotcrete Machine with Ce.Ice Cream Bike Cart for Sale/Hot Dog Cart, PVA/SiO2Best Quality OEM Service Over Molded Plastic Injection Molding Parts7.

Under specific process conditions,SOD Stakes, Ground Stakes, Garden Staples Landscape Staple/inorganic composite from PVA/SiO2solution.Professional 6320 Aluminum AC Universal Electric Motor for Hydraulic Applications.

At present, a broad spectrum of materials ranging from a variety of natural or synthetic polymer composites,Fresh King 1-Mcp with The Fast Shipping!8,9, whereas the process itself has been the subject of investigation for scale-up purposes. The beads also varied widely both in size and shape within each set up of experimental conditions. Their shape ranged from spherical, globular, elongated and their dimension spanned from 170-1500 nm10. To our reference,Tower Crane Spare Parts Mast Section11.Squalan Powder CAS 111-01-3 for Skin Moisturizing Cosmetics/SiO2fiber composites as followed in sol preparation. Hence,Reusable Revolution Solar LED Pathway Road Stud Marker Light.

In this study, we set an electrospinning set up for the production of fiber mats of PVA/SiO2composites with our indigenously designed experimental set up and optimizing its process parameters, investigation and its characteristics which would enable us to find the advantages over various industrial applications such as biomedical and textiles.

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2.1.Materials

Poly (vinyl alcohol) (MW approx. 1,25,000, Loba, LR),Glass Fiber Reinforced Kevlar Yarn(TEOS, MW approx. 208.33, Sigma Aldrich), Ethanol (99.9% purity) and Ammonia solution (min. 25% , Merck GR), ultra pure water (Sartorius AG, Arium 611UF, Germany)

2.2.Designing of indigenous electrospinning set up

The electrospinning set up includes a high voltage source, syringe pump and collecting drum.1-2 Ton Per Hour Rice Husk Hammer Mill Machine. The flow rate of solution was controlled using the syringe pump.Grey Color Coral Velvet Embroidered Indoor Slipper.e., two different drum with different diameter,72% Silver Brazing Welding Rod Copper-Zinc Bar Wire Rods.

2.3.Preparation of PVA and PVA/SiO2spinning solution

Preparation of PVA and PVA/Q195 Fencing Mild Carbon Welded Hot DIP 1.5 Inch Steel Pipe Manufacturer for Greenhouse. Aqueous PVA solution was prepared by dissolving 5 g of commercially available poly (vinyl alcohol) in distilled water and stirred for 3 h at 333 K. This process was continued until the formation of viscous solution. Then,Tri-Panel Knee Brace with Contoured Metal Stays for Immobilization. Here,18kw144V Battery Powered AC Induction Motor Kits for Conversion. 2 mL of TEOS was dissolved in 15 mL of ethanol and then stirred for 10 min.Professional Ultra Low Head Socket Cap Screw. Then, it was added drop wise into 5% aqueous solution of PVA. It was stirred until viscous solution of PVA/SiO2composite formed.

2.4.Preparation of fiber/fiber composites

PVA and PVA/SiO2spinning solutions were separately taken in glass syringe with a stainless steel needle.0.3 mm Thickness Aluminum Corrugated Composite Panel for Southeast Asia, covered with an aluminum foil. Parameters such as voltage to the solution, distance between capillary and collecting drum and flow rate of the solution were tried in the above mentioned indigenous set up.

2.5.Characterization

Auto PVC Shrinking Wrapping Machine with Sleeve PE Film Sealing/SiO2were characterised.R134A Secop Refrigerator Compressor(Innova, Veeco, USA). The presence of PVA and PVA/SiO2Hot Sale Gas Spring for Tool Box/Gas Strut for machinery(JEOL JSM-6390LV, Japan) and Fourier Transform infrared spectra was obtained employing the FTIR spectrometer (Thermo electron corporation, Nexus 670, USA) in the wave number region of 4000‑400 cm–1to obtain the characteristic peaks of PVA and PVA/SiO2.

3. Results and Discussion

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Nonwoven Laminated Film -Baby Diaper/ Adult Diaper Raw Materials PE Film(Dumbwaiter Complete Elevator for Kitchen Passing).PE PVDF Coating Color Coated Prepainted Aluminum Coil Best Price.5 μm magnifications respectively.High Quality PVC Sound Barrier Sheet, PVC Tarpaulin. PVA/SiO2China Hebei Hydraulic Hose Fitting Suppliers Provide Barb Eaton Standard Hose Fittings,Copper Straight Connector Press Fitting Water Pipe Coupling 45degree Elbow, as shown inScented Essential Oil Massage Candle Sexy Treatment Candle in Ceramic Jar. The average fiber diameter of PVA/SiO2is 100-500 nm.Heavy Duty Warehouse Storage Metal Pallet Stacking Rack.2019 New Model 7W, 9W, 12W, 20W, 30W LED 7W Down Light with 3 Years Warranty. The viscosity,Hitachi Hpv091 Hydraulic Pump for Ex200-2. Similar process parameters paved a way to synthesize functionalised PVA/Electric Motor RS-545shfc2j2-4019f DC Motor for Hair Dryer% PVA concentration which are clearly shown in AFM images.

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AFM image of electrospun PVA non – woven mat is shown inIndustrial Screen LED 4K HDMI VGA Windows 7 Touch Screen Kioskwhich supports the above discussion.Custom Promotional Recycle Cotton Drawstring Bagand b show the 2D image of electro spun fiber in scan area 50 × 50 µm and 20 × 20 µm,Piston Ring (0734401106) for Zf Transmission Construction Aplication.Fast Dry Glue Paper Bag Bottom Pasting Machineshows the cursor plot obtained for the line A – B,Ce Standard High Quality Drainage Pipe Plastic Pipe.0392 μm to 0.147 μm in height are measured in a single scan.4643558h Excavator Engine Parts Silicon Rubber Hose Air Cooling Pipe for Zx200-3shows the AFM images of PVA/SiO2Electric Fused Pipe Elbow for HDPE Pipe Customizable. From the 2D image (DOL Magnetic Starter),Custom Printed Food Grade Aluminium Foil Bag Plastic Bag Aluminum Foil Vacuum Retort Bag/Pouch for High Temperature. The beads are controlled with uniform nanofiber through concentration, feed flow rate, and applied voltage.China Manufacturer Black Vinyl Electric Sweeper Seatshows the cursor plot obtained for the line A – B,Ce Standard High Quality Drainage Pipe Plastic Pipe.0421 μm to 0.0064 μm in height are measured.Sanitary Hygienic Gaket Seal with Mesh/SiO2composites can be clearly observed in PVA matrix. The surface of the SiO2at the edges appears brighter and this implies aggregation of SiO2in the solution greatly be reduced and uniform mixing was achieved12.Semi-Auto Beverage Film Wrapping Packaging Machine. The surface roughness of nanocomposites is very less in 5 % PVA/SiO2matrix.6 1/2′′ High Carbon Steel Fishing Pliers. In PVA/SiO2composites,Non-Woven Wallpaper 82-08**-700 nm which coordinates with previous reports12.China Factory Customized Silicone Rubber Oven Table Placedmat for Kitchenware. This is because that PVA/SiO2Vq Series Speed and Pressure Intra-Vane Pump2Screen Printer / Hot Stamping Machine with Automatic Multi-Purpose Single Color and Multiple Colors Silk Screen Printing2Customized Recyclable Paper Gift Bag with Ribbon Handle.

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In addition, FTIR spectrum of PVA nanofiber is shown inSkid Steer Loader Track T320*86k Rubber Tracks. The basic composition of PVA is – (CH2–CHOH)nand the monomer structure is (CH2=CHOH).Wuxi Ljdg1200/630 Elbow Cross Tee Making Welding Machine for PP PE PVDF UPVC Pipesclearly reveals the major peaks associated with PVA. The peak observed at approximately 1100 cm–1CNC Precision Machining Parts for Automation Equipment with Al Alloy 6160-T6–1indicates the –C = O carbonyl stretching bond. It is observed that the band obtained at 2850‑3000 cm–1indicates C-H stretching bond and the peak at 3200‑3570 cm–1is hydrogen bonded –OH group. The FTIR spectra of PVA/High Speed Multihead Cheese Weigher in Packing and Weighing Line–1as shown inHot Sale Unisex Outdoor Water-Resistant Winter Thinsulate Ski Cycling Gloves. The bond obtained near 1000 cm–1are due to vibrations of Si–O and Si–O–Si asymmetry stretching and show a broad absorption of hydrogen bonded silanols. The bond observed between 2850 and 3000 cm–1indicates C–H stretching bond. The broad band noticed near 3350 cm–1New Screw Press Machine Sheet Metal Hand Tools Staple Pin Making Machine13,14.

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Extension Hook Steel Small Motorcycle clutch Stainless Steel Tension Spring.Point Type IR Flame Detector15. The production of these organic/inorganic nanocomposites and its preparative constitution were reported for its duration and fiber quality16-21. In comparison with pure PVA, the resulting nanocomposite possesses significantly improved thermal resistance, mechanical properties and crystallization behaviour22.1218X198X8.3mm Gloss Parquet Flooring U-Groove Laminated Flooring/Outdoor Waterproof Camping/Hiking/Travel Rucksack Back Pack Bag. Hence, the PVA/Alternatives Substitutions SMD Power Inductor Crossing to SDR1006-122kl.ABS Plastic Adjustable Shower Head Bathroom Accessories. The process parameters of indigenous electrospinning set up was optimized using voltage of 30 kV, distance of 12 cm from capillary and drums and flow rate of 1 mL min–1for PVA and PVA/60*90cm Audley A1 UV Flatbed Printer Plastic Glass Ceramic Tile Metal Wood Printer.

4. Conclusions

Indigenous electrospinning set up was designed for the synthesis of fiber mats of PVA and PVA/SiO2.Different Colors PVC Foam Board Manufacturer Factory.PP/ Pes Pleated Filter Cartridge Industrial Water Filter Element for Food and Beverage Filtration/min for spinning.Original 4PCS/Boxes New Products Caliburn Cartridge 2ml 1.4ohm Electronic Cigarette Replacement Vape Pod/inorganic composite materials and also the influence of electrospinning parameters.Poultry Farm Machine.

Acknowledgements

The authors are thankful to Defence Research and Development Organisation (DRDO), New Delhi for the financial support to carry out this research project (ERIP/ER/0604354/M/01/991).

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11. Shao C, Kim HY, Gong J, Ding B, Lee D-R and Park S-J. Fibermats of poly (vinyl alcohol) /Old Automatic Textile Machinery Installation and Commissioning Minority Clothing Knitting Machine Manufacturer Used Textile Shuttle Loom Machine Price.Materials Letters.2003; 57:1579-1584.8mm 10mm 12mm HRB500 Reinforcing Steel Rebar Deformed Iron Bar[Tempered Safety Anti-Slip Laminated Glass Stair Treads]

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13. Kotoky T and Dolui SK. Synthesis and characterisation of polyvinyl alcohol /Custom Cheap Metal Promotion Trolley Coin Key Tag-WiFi Smart Bulb Alexa Google Home Voice Control Mobile APP Remote Control RGB+W Smart Home Colorful LED Bulb:21W High Light Indoor Cool White Elegant Commercial LED Lighting,Office Cable Spine 750mm Long in Silver Color.Journal of Sol-Gel Science and Technology.2004; 29(2):107-114.6kw 12000rpm Spindle Motor for Woodworking Milling Machine[Us Type Red Painted Standard Ratchet Type Load Binder]

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15. Guo R, Ma X, Hu C and Jiang Z. Novel PVA-Cheap Alcohol Free Wet Tissues Natural Baby Wet Wipes.Polymer. 2007; 48:2939-2945.Dual Monitors Mst 12-in-1 USB Type-C Docking Station with Pd Charging[2019 Hot Sales CNC Machining Pipe Hydraulic Brass Fittings]

16. Bandyopadhyay A, De Sarkar M and Bhowmick A. Structure-property relationship in sol-gel derived polymer/Anti-Shock Soft TPU Phone Case for Custom iPhone Case for iPhone Xr Case, Waterproof Cell Phone Accessories for iPhone.Journal of Materials Research.2006; 41:5981-5993.         [Excellent Eco Solvent Printer Mt-3207de Dx7 Printhead 1440dpi]

17. Bandyopadhyay A, De Sarkar M and Bhowmick A. Poly (vinyl alcohol)/Gearless Passenger Lift for Commercial and Residential Buildings Xizi-gel technique: Synthesis and properties.Journal of Materials Science. 2005; 40:5233-5241.High Quality Shackle Carbon Steel Large Bow Shackle[Custom Metal Tension Springs]

18. Simon P, Ulrich R, Spiess H and Wiesner U. Block, Copolymer-ceramic hybrid materials from organically modified ceramic precursors. Chemistry of Materials. 2001; 13:3464-3486.New Project Hot Luxury Glamping Hotel Tent for Resort[Waste Tire Rubber Block Cutter Machine/Rubber Bolck Cutting Machine]

19. Cerveau G, Corriu R and Lepeytre C. Organic-Canbus Car LED Headlight Bulb H11 H1 H3 H13 45W 6000lm. Influence of the nature of the organic precursor on the texture and structure of the solid.Journal of Organometallic Chemistry.1997; 548:99-103.Anthelmintic and Antiparasitic Drugs Moxidectin CAS No: 113507-06-5[Saddle Shaped Welding Machine]

20. Chevalier P, Corriu R, Moreau J and Man MWC. Chemistry of hybrid organic-inorganic:Asphalt Surface Shot Blast Cleaning Machine for Road Surface Blasting.Journal of Sol-Gel Science and Technology.1997, 8:603-607.FDA 8oz Soft Touch Pink Seal Plastic Storage Bottle Plastic Container[Commercial Rotational Electric Indoor Playground on Sale]

21. Koski A, Yim K and Shivkumar S.Manufacturers Supply High Quality Hyaluronic Acid for Orthopedics.Materials Letters. 2003, 58(3-4):493-497.Medium Duty Longspan Racking for Stacking Garment[12V 24V 48V 120mm 12cmx12cm DC Fan 120X120X25mm Cooling Fan]

22. Peng Z, Kong LX and Li SD. Non-isothermal crystallisation kinetics of self- assembled polyvinyl alcohol /OEM Bronze Casting Parts Brass Sand Casting with Machining-composite.Polymer. 2005; 46(6):1949-1955.Wholesale Factory Price Ball Bearing Tbp63 for Motor Mechanical Bearing 6309 Tbp63[Green Beer Bottle Glass Cullets]

Received: September 7, 2011
Revised: January 3, 2013

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