Synthesis of fiber membranes from polyvinyl alcohol (PVA)/shell extract of melinjo (SEM) using electrospinning method

In this study, the thermal and mechanical properties of nanocomposite materials were investigated. Produced nanocomposite materials are epoxy-based and reinforced with Multiwalled Carbon Nano Tube dopped polyvinyl alcohol (PVA) nanofibers. Nanofibers were produced by the electrospinning method. Nanofibers were used for reinforcement as 5, 10, and 15 number of layers. These nanocomposite materials were subjected to uniaxial tensile tests at constant tensile speed in accordance with ASTM D882-02 standards. Tensile strength, elasticity modulus, Poisson's ratio, and toughness values were obtained and these values were compared with the values of reference pure epoxy samples without the nanofiber. For obtaining the thermal properties of the samples Thermogravimetric and Differential Thermal Analysis were performed. In order to investigate the damage mechanisms, the fractured tensile test specimens' surfaces were visualized by Scanning Electron Microscopy. Mechanical and thermal properties of the epoxy were improved by using the PVA nanofibers dopped the MWCNT.

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Diameter optimization of polyvinyl alcohol/sodium alginate fiber membranes using response surface methodology

Materials Chemistry and Physics ◽

10.1016/j.matchemphys.2021.124969 ◽

2021 ◽

pp. 124969

Author(s):

Chunhong Wang ◽

Qi Zuo ◽

Lijian Wang ◽

Bixuan Long ◽

Kushairi Mohd Salleh ◽

...

Keyword(s):

Response Surface Methodology ◽

Polyvinyl Alcohol ◽

Response Surface ◽

Sodium Alginate ◽

Fiber Membranes ◽

Alginate Fiber

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Preparation of anticoagulant polyvinylidene fluoride hollow fiber hemodialysis membranes

Biomedical Engineering / Biomedizinische Technik ◽

10.1515/bmt-2015-0149 ◽

2017 ◽

Vol 62 (1) ◽

Cited By ~ 1

Author(s):

Qinglei Zhang ◽

Xiaolong Lu ◽

Shichun Yang ◽

Qingzhao Zhang ◽

Lihua Zhao

Keyword(s):

Polyvinyl Alcohol ◽

Hollow Fiber ◽

Polyvinylidene Fluoride ◽

Separation Performance ◽

Hollow Fiber Membranes ◽

Pvdf Membrane ◽

Fiber Membranes

AbstractIn this study, polyvinylidene fluoride (PVDF) hollow fiber membranes (HFMs) were modified by coating with polyvinyl alcohol (PVA) and chitosan. The influences of PVA and chitosan amount on PVDF membrane mechanical and separation performance were investigated. The results showed that the modified PVDF membranes had better mechanical and separation performance when the amount of PVA and chitosan was 20 mg/m

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The Removal of Reactive Red 141 from Wastewater: A Study of Dye Adsorption Capability of Water-Stable Electrospun Polyvinyl Alcohol Nanofibers

Autex Research Journal ◽

10.2478/aut-2019-0040 ◽

2019 ◽

Vol 0 (0) ◽

Author(s):

Çigdem Akduman ◽

Seniha Morsümbül ◽

Emriye Perrin Akçakoca Kumbasar

Keyword(s):

Polyvinyl Alcohol ◽

Pore Size ◽

Surface Area ◽

Dye Adsorption ◽

Size Analysis ◽

Pore Size Analysis ◽

Electrospinning Method ◽

Nanofiber Membranes ◽

Nanofibrous Membranes ◽

Adsorption Capability

Abstract The dye production and its use in textile and related industries resulted in discharge of dye to wastewater. Adsorption for color removal is known as equilibrium separation process, and the resultant decolorization is influenced by physicochemical factors such as adsorbent surface area. The nanofiber membranes prepared by the electrospinning method have controllable nanofiber diameter and pore size distribution (PSD) with a high surface area to volume or mass ratio. In this study, polyvinyl alcohol (PVA) nanofibrous membranes were prepared by the electrospinning method at different collection times such as 3, 5 and 10 h and heat fixated at 130, 150 and 170°C for 10 min, and then, the adsorption capability of PVA nanofiber membranes for Reactive Red 141 from aqueous solution was investigated. In order to make PVA nanofibers stable to water, the nanofibrous membranes were chemically cross-linked by a polycarboxylic acid (1,2,3,4 butanetetracarboxylic acid (BTCA)). PVA nanofibrous membranes were characterized by scanning electron microscopy, thermogravimetric analysis, swelling tests and pore size analysis. The results indicated that BTCA crosslinking improved the thermal and water stability of the nanofibrous structure but has no significant effect on the pore sizes of the membranes. Adsorption of Reactive Red 141 was studied by the batch technique, and it was observed that PVA nanofibers removed approximately >80% of the dye.

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Synthesis of Nanofiber from Polyvinyl Alcohol (PVA)-Collagen Using Electrospinning Methods

Jurnal Kimia Terapan Indonesia ◽

10.14203/jkti.v21i2.428 ◽

2020 ◽

Vol 21 (2) ◽

pp. 55-65

Author(s):

Sudirman Sudirman ◽

Aloma Karo Karo ◽

Sulistiyoso Giat Sukaryo ◽

Karina Dwi Adistiana ◽

Kiagus Dahlan

Keyword(s):

Mechanical Properties ◽

Polyvinyl Alcohol ◽

Aqueous Solutions ◽

Functional Groups ◽

Wound Dressing ◽

Collagen Fiber ◽

Tissue Formation ◽

Collagen Concentration ◽

Electrospinning Method ◽

Growth Of Bacteria

Polyvinil alcohol (PVA) polymer can be used as matrix to be mixed with collagen in the subtance of primary wound dressing material to cover wound that prevents growth of bacteria and enhanced tissue formation. Collagen fiber is fragile, so important to combined with PVA to obtain better mechanical properties. The PVA-collagen fibers are prepared in aqueous solutions with PVA (10%) and collagen concentration (1% and 2%) using electrospinning method and the effect of voltage 15 kV, 19 kV, and 23 kV. Analysis of functional groups show that the presence of identical compounds produced and new functional groups are not formed. SEM data show that the effect of variation of voltage and collagen concentration on the resulting morphology of fiber. PVA-collagen 2% fibers produce continuous fibers, has a diameter 284-426 nm, thickness 0.0324-0.0483 mm and has a high percent of elongation so it can be used as a wound dressing material.

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Characterisation of Collagen from the Skin of Catfish (Pangasius sp) for Innovative PVA-Collagen Nanofiber

E3S Web of Conferences ◽

10.1051/e3sconf/201912504002 ◽

2019 ◽

Vol 125 ◽

pp. 04002

Author(s):

Erdin Almuqoddas ◽

Imron Hambyah ◽

Rochmah Rizqiyanti ◽

Agus Subagio ◽

Ngurah Ayu Ketut Umiati

Keyword(s):

Surface Morphology ◽

Polyvinyl Alcohol ◽

Fiber Diameter ◽

Amide Group ◽

Homogeneous Mixture ◽

Wave Number ◽

Distilled Water ◽

Electrospinning Method ◽

Group A

Preparation of PVA-Collagen nanofiber plaster production begin by repairing the skin of catfish, then collagen is extracted with distilled water. Extracted collagen need to be frozen dry so that collagen can be obtained in the form of sheets, powder, or crystals. The next step is the production of PVA-Collagen nanofiber, a 10% solution of polyvinyl alcohol (PVA) is mixed with a previously prepared extracted collagen and stirred until it forms a homogeneous mixture. Next, PVA-Collagen nanofiber is formed by the electrospinning method. The results of characterization using FTIR found three main groups in six variations: amide group A; amide I; and amide II. Amide A has a wave number in the range 3300-3440 cm-1, amide I is in the range 1625-1690 cm-1, and amide II is in the range of 1480-1575 cm-1. Characterization was carried out to determine the surface morphology of the observation in the sample using Photomicrograph (200 µm) with magnification 10x, produced fiber diameter formed in variations of PVA-Collagen 1% 116-120 µm while in the variation of PVA-Collagen 1% + Chitosan 10 drops in diameter 41-50 µm.

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Synthesis of Nanofiber Polyvinyl Alcohol (PVA) with Electrospinning Method

Journal of Physics Conference Series ◽

10.1088/1742-6596/2110/1/012010 ◽

2021 ◽

Vol 2110 (1) ◽

pp. 012010

Author(s):

D H Kusumawati ◽

K V N Istiqomah ◽

I Husnia ◽

N Fathurin

Keyword(s):

Polyvinyl Alcohol ◽

Flow Rate ◽

Chemical Resistance ◽

Gas Permeability ◽

Solution Concentration ◽

Optical Microscope ◽

Synthetic Polymer ◽

Syringe Needle ◽

Electrospinning Method

Abstract PVA nanofibers are PVA solution-based nanofibers. PVA solution is a synthetic polymer that is non-toxic, soluble in air, and has excellent thermal, gas permeability, and chemical resistance qualities. Nanofibers were synthesized using PVA (Polyvinyl alcohol) solutions at concentrations of 8%, 10%, and 12%. The electrospinning method is used in this investigation, with input voltages of 17 kV and 20 kV, needle distances of 7 cm, 10 cm, and 15 cm from the collector, and a flow rate of 5 ml/hour for each concentration. An optical microscope was used to examine the nanofiber synthesis results in order to assess the morphology and diameter of the fiber. PVA nanofiber with the best fiber from electrospinning has a diameter of 1.06 μm and homogeneous fiber without beads is a synthesized nanofiber with a variation of 10% PVA solution concentration, 15 cm distance from the syringe needle to drum collector, and 20 kV voltage.

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Effect of Morphology and Chemical Modification on Water Degradation Behavior of Polyvinyl Alcohol - Gelatin Blend

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.705.82 ◽

2016 ◽

Vol 705 ◽

pp. 82-86 ◽

Cited By ~ 1

Author(s):

Jopeth M. Ramis ◽

Bryan B. Pajarito

Keyword(s):

Steady State ◽

Polyvinyl Alcohol ◽

Chemical Modification ◽

Mass Loss ◽

Aqueous Environment ◽

Ambient Conditions ◽

Degradation Study ◽

Electrospinning Method ◽

Continuous Mass ◽

Degradation Properties

Polyvinyl Alcohol - Gelatin (PVAG) nanofibers were successfully synthesized using the electrospinning method. After synthesis, the degradation study of electrospun PVAG nanofibers was done using Quartz Crystal Microbalance submerged in distilled water at ambient conditions. Additional samples were prepared: PVAG film, and cross-linked PVAG nanofibers using 37% formaldehyde vapor, to analyze the effects of the morphology and chemical modification on the degradation property of PVAG blend. Results revealed significant differences in the degradation properties of different samples. PVAG film exhibited initial mass loss at the beginning but afterwards began to uptake water from the environment, achieving steady state value. PVAG nanofibers' behavior was in a continuous mass loss behavior in contrast to the film morphology, probably due to its large surface area exposed to the aqueous environment that readily solubilized PVA and gelatin components of the nanofibers. Analysis on the PVAG cross-linked nanofibers showed degradation profile comparable to a damped sinusoid function, achieving a pseudo steady-state profile after considerable time. Evidence from QCM studies show that morphology and chemical modification has an effect on the degradation property of PVAG, and further tuning of these effects could be utilized for functional use in tissue engineering, drug delivery systems, and other chemical and biomedical use.

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