scholarly journals Alginate-Partially Acetoacetylated Polyvinyl Alcohol Composite Fiber Paper and Its Physical Properties.

1991 ◽  
Vol 45 (11) ◽  
pp. 1255-1260
Author(s):  
Satoshi Fukuoka ◽  
Hiroshi Kamishima ◽  
Yoshinari Kobayashi
Keyword(s):  
Polyvinyl Alcohol ◽  
Physical Properties ◽  
Composite Fiber

scholarly journals Impact of Structural Variations on Pre-Hollow/Micro-Porous Yarn's Tensile and Physical Properties

2012 ◽  
Vol 7 (1) ◽  
pp. 155892501200700 ◽  
Author(s):  
Arunangshu Mukhopadhyay ◽  
Saiyed Muzffar Ishtiaque ◽  
Devanand Uttam
Keyword(s):  
Polyvinyl Alcohol ◽  
Physical Properties ◽  
Product Quality ◽  
Tensile Behavior ◽  
Structural Variations ◽  
Yarn Strength ◽  
The Core

In the present study impact of structural variations on pre-hollow/micro-porous yarn's tensile and physical properties were investigated in view of their processing and ultimate product quality. The results show that: the core pre-hollow yarns and doubled pre-hollow yarns possessing continuous polyvinyl alcohol (PVA) filaments are better in tensile behavior than blended pre-hollow yarns which contain discrete PVA staple fibers. The doubled pre-hollow yarns were found to have the lowest unevenness, thick places, thin places and total imperfections followed by blended pre-hollow and core pre-hollow yarns, while blended pre-hollow yarns showed lowest number of neps. The core pre-hollow yarns exhibit lowest hairiness followed by blended pre-hollow yarns and doubled pre-hollow yarns. Use of double roving during spinning is beneficial for improving yarn strength, unevenness imperfections and hairiness in all the pre-hollow yarns.

Study of Some Physical Properties for Polyvinyl Alcohol-Polyethylene Glycol Blends

2021 ◽  
Vol 19 (1) ◽  
pp. 49-56
Author(s):  
Sanaa S. Najm
Keyword(s):  
Polyethylene Glycol ◽  
Absorption Coefficient ◽  
Polyvinyl Alcohol ◽  
Physical Properties ◽  
Polymer Blends ◽  
Shear Viscosity ◽  
Acoustic Impedance ◽  
Ultrasonic Absorption ◽  
Reduced Viscosity ◽  
Polymeric Solutions

A polymer blends (PVA/PEG) have been prepared at various concentrations(6%, 8%, 10%, 12%, and 14%) g /ml by dissolving different weights from the powders{Pva and Peg}.The behavior of this mixture has been studied utilize some physical properties such as ultrasonic absorption coefficient, relaxation amplitude, specific acoustic Impedance, compression, bulk modulus, shear viscosity, and Reduced viscosity. The outcomes referenced that each of these characteristics increased with increasing concentration of polymeric solutions, "while compressibility decreased with increasing concentration solutions".

scholarly journals Physical Properties and Wood Bonding Performance of Polyvinyl Alcohol with Addition of Montmorillonite

2009 ◽  
Vol 55 (2) ◽  
pp. 85-91
Author(s):  
Hirotaka Yoshizawa ◽  
Masaaki Yamada ◽  
Kinji Taki
Keyword(s):  
Polyvinyl Alcohol ◽  
Physical Properties ◽  
Bonding Performance ◽  
Wood Bonding

The Influence of Pigmental Surface Sizing on the Physical and Laser Printing Properties of Paper

2012 ◽  
Vol 262 ◽  
pp. 486-490
Author(s):  
Zheng Jian Zhang ◽  
Yu Tong Han ◽  
Yun Zhi Chen
Keyword(s):  
Polyvinyl Alcohol ◽  
Physical Properties ◽  
Solid Content ◽  
Gray Scale ◽  
Laser Printing ◽  
Surface Sizing ◽  
Color Density ◽  
Image Definition

In order to improve the physical and color laser printing properties of paper, the polyvinyl alcohol and silica were used for pigmental surface sizing of paper. Under the previous conditions of solid content 12% and 14%, the effects of different ratio of PVA and silica such as 100:0, 15:1, 10:1, 5:1, and 1:1 on the physical properties of paper and laser printing performance were investigated. The brightness, opacity, roughness, color density, gray scale and image definition were measured after the surface sizing paper was calendared under the condition of temperature 70°C and pressure 4MPa. When the solid content was 12%, PVA: SiO2 was 1:1 and the solid content was 14%, PVA:SiO2 was 10:1, the brightness and opacity of paper obtained the maximum values. With the increase of silica proportion roughness increased at first and then decreased. Color density and tone reproducibility of paper was significantly improved by the pigmental sizing treatment as well as the dots and lines definition. The reasonable pigmental sizing scheme was as follow: solid content was 12%, PVA:SiO2 was 1:1, sizing temperature was 60°C, calendar temperature was 70°C and calendar pressure was 4MPa.

Preparation of Collagen/PVA Composite Fiber

2011 ◽  
Vol 331 ◽  
pp. 61-64 ◽  
Author(s):  
Zhi Hui Sui ◽  
Yu Jiao Wei ◽  
Xin Zhao
Keyword(s):  
Infrared Spectroscopy ◽  
Reaction Time ◽  
Polyvinyl Alcohol ◽  
Mass Fraction ◽  
Composite Fiber ◽  
Wet Spinning ◽  
Optimal Conditions ◽  
Grafting Reaction ◽  
Grafting Modification ◽  
Acrylic Ester

Alkali was used to extract collagen from chrome shavings. Grafting modification of collagen was carried out with acrylic ester as grafting monomers. The structure of the product was characterized using infrared spectroscopy. Spinning liquid was prepared with collagen and PVA(polyvinyl alcohol). Collagen /PVA composite fiber could be produced by wet spinning. The results showed that the optimal conditions of collagen grafting reaction were as follows: the dosage of modified monomers was 30% of collagen (mass fraction), the addition of emulsifier was 10% of butyl acrylate (mass fraction), reaction time was 2h and reaction temperature was 70°C. The collagen composite fiber had a strength of 3.65 cN/dtex and a elongation of 19%. The composite fiber had certain spinnability.

scholarly journals Utilization of Cellulose from Pineapple Leaf Fibers as Nanofiller in Polyvinyl Alcohol-Based Film

2018 ◽  
Vol 16 (2) ◽  
pp. 181 ◽  
Author(s):  
Kendri Wahyuningsih ◽  
Evi Savitri Iriani ◽  
Farah Fahma
Keyword(s):  
Thermal Properties ◽  
Water Vapor ◽  
Polyvinyl Alcohol ◽  
Physical Properties ◽  
Composite Film ◽  
Transmission Rate ◽  
Barrier Properties ◽  
Light Transmittance ◽  
Water Vapor Transmission Rate ◽  
Water Vapor Transmission

 Cellulose from pineapple leaf fibers as one of the natural polymer which has biodegradable property in a nanometer’s scale, can be formed as a filler in composite of Poly(vinyl) Alcohol/PVA is expected to increase the physical, thermal, and barrier properties of composite films similar to conventional plastic. The aim of this study was to examine the effect of fibrillation of cellulose fibers from pineapple leaf fibers using a combined technique of chemical-mechanical treatments, to investigate the reinforcing effect of concentration of nanocellulose fibrils in the polyvinyl alcohol (PVA) matrix on physical properties, thermal properties, water vapor transmission rate, light transmittance and morphological with and without addition of glycerol. Nanocellulose was made from cellulose of pineapple leaf fiber using wet milling (Ultra Fine Grinder). The composite film production was carried out by using casting solution method by mixing PVA solution with nanocellulose (10-50%) and glycerol (0-1%). The characterization of film covered physical properties (thickness, moisture content and density), thermal properties, permeability (WVTR), light transmittance, morphology, and crystallinity. Nanocellulose from pineapple leaf fibers was produced by Ultra Fine Grinder shows that the size reduction process was accurate. Nanocellulose addition on PVA composite film was affected to increasing the physical, thermal, and barrier properties. Meanwhile, decreasing the percentage of composite film transmittance, thus the transparency decrease (opaque). Water vapor transmission rate (WVTR) the film was increased with increasing glycerol concentration, but the physical and thermal properties was decreased.

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