(82)Polyvinyl Alcohol Fiber.III. Physical Properties of the Cross Linked P.V.A. Fiber.

1950 ◽  
Vol 53 (4) ◽  
pp. 167-168
Author(s):  
Ichiro Ikoma ◽  
Michiyasu Ohira ◽  
Hiroshi Kato
Keyword(s):  
Polyvinyl Alcohol ◽  
Physical Properties ◽  
The Cross

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.

Creep and dynamic mechanical behavior of cross-linked polyvinyl alcohol reinforced with cotton fiber laminate composites

2019 ◽  
Vol 39 (4) ◽  
pp. 326-335 ◽  
Author(s):  
Naman Jain ◽  
Shubhan Ali ◽  
Vinay K. Singh ◽  
Komal Singh ◽  
Nitesh Bisht ◽  
...  
Keyword(s):  
Polyvinyl Alcohol ◽  
Cotton Fiber ◽  
Water Solubility ◽  
Mechanical Analysis ◽  
Cross Linking ◽  
Laminate Composites ◽  
Dynamic Mechanical ◽  
The Matrix ◽  
The Cross ◽  
Uptake Test

AbstractThe objective of this investigation was to fabricate cross-linked polyvinyl alcohol (PVA) based laminate composites reinforced with biaxial cotton sheets. Cross-linking was done with sulfuric acid, to overcome the water solubility of PVA. A water uptake test was performed to evaluate the effect of cross-linking on the water absorption properties of the composites. Morphology, distribution and bonding between the matrix and reinforcement of the fabricated composites were studied using scanning electron microscopy. Mechanical properties such as the tensile strength (TS), modulus of elasticity and elongation of the fabricated composites material were evaluated. There was about a 56.25% increase in the TS of the cross-linked composite as compared to the neat PVA, and at 64 wt.% of cotton fiber, there was about a 56% increase in the TS as compared to the cross-linked PVA. The thermal degradation analysis of fabricated composites material was carried out by thermogravimetric analysis. The thermal stability increased with increase in cotton fiber wt.%. The viscoelastic properties of the fabricated composites material were determined by dynamic mechanical analysis. The effects of stress (4 MPa, 6 MPa and 8 MPa) and temperature (20°C and 40°C) on creep and recovery behavior of the laminated composites were studied.

scholarly journals The cross-linked polyvinyl alcohol/hydroxyapatite nanocomposite foam

2019 ◽  
Vol 8 (3) ◽  
pp. 3149-3157 ◽  
Author(s):  
Amir Ali Ashraf ◽  
Seyed Mojtaba Zebarjad ◽  
Mohammad Jafar Hadianfard
Keyword(s):  
Polyvinyl Alcohol ◽  
Nanocomposite Foam ◽  
The Cross

Effect of Microwave Irradiation on the Cross-Linking of Polyvinyl Alcohol

2005 ◽  
Vol 78 (7) ◽  
pp. 1158-1161 ◽  
Author(s):  
N. V. Petrova ◽  
A. M. Evtushenko ◽  
I. P. Chikhacheva ◽  
V. P. Zubov ◽  
I. V. Kubrakova
Keyword(s):  
Microwave Irradiation ◽  
Polyvinyl Alcohol ◽  
Cross Linking ◽  
The Cross

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".

Study on On the Cross-Sectional Shape Change of the Profiled Fiber along the Spinning Path in Melt Spinning

2012 ◽  
Vol 602-604 ◽  
pp. 1804-1807
Author(s):  
Yue Wang ◽  
Wu Shan Cheng ◽  
Ming Hong Wang
Keyword(s):  
Numerical Simulation ◽  
Physical Properties ◽  
Melt Spinning ◽  
Shape Change ◽  
Deformation Degree ◽  
Cross Sectional ◽  
The Cross ◽  
Profiled Fibers ◽  
Sectional Shape ◽  
Profiled Fiber

The cross-sectional shape of profiled fibers has made obvious influence on fibers physical properties. The fiber profiled factor is an index used to estimate the deformation degree of profiled fibers. Based on the equations of melt-spinning dynamics and deformation, a numerical simulation program for calculating the fiber profiled factor along the spinning path was developed. A numerical simulation for calculating the fiber profiled factor along the spinning path of trilobal fibers in the PET melt spinning was performed. The simulation result graph of the fiber profiled factor along the spinning path is close to the final average fiber profiled factor measured in the spinning experiment under the same condition.

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