scholarly journals THE SPINNING OF A POLYMER BLEND CONSISTING OF POLYVINYL ALCOHOL AND BASIC POLYMER LATEX

1961 ◽  
Vol 17 (7) ◽  
pp. 643-654
Author(s):  
Kanji Matsubayashi ◽  
Yutaka Hirano
Keyword(s):  
Polyvinyl Alcohol ◽  
Polymer Blend ◽  
Polymer Latex

Kaolin-loaded chitosan/polyvinyl alcohol electrospun scaffold as a wound dressing material: in vitro and in vivo studies

2020 ◽  
Vol 29 (5) ◽  
pp. 270-280
Author(s):  
Majid Salehi ◽  
Saeed Farzamfar ◽  
Arian Ehterami ◽  
Zahrasadat Paknejad ◽  
Farshid Bastami ◽  
...  
Keyword(s):  
Polyvinyl Alcohol ◽  
Polymer Blend ◽  
Cellular Response ◽  
Blood Compatibility ◽  
Transmission Rate ◽  
Weight Ratio ◽  
In Vivo Studies ◽  
Collagen Fibres ◽  
Uptake Capacity ◽  
Sterile Gauze

Objective: To evaluate the application of a fabricated dressing containing kaolin for skin regeneration in a rat model of excisional wounds. Method: In the present study, kaolin was loaded into electrospun polyvinyl alcohol (PVA)/chitosan polymer blend to develop a composite nanofibrous dressing. To make the yarns, kaolin with weight ratio of 5% was added to PVA/chitosan polymer blend and subsequently formed into nanofibres using the electrospinning method. Scaffolds were evaluated for to their microstructure, mechanical properties, surface wettability, water vapour transmission rate, water-uptake capacity, blood uptake capacity, blood compatibility, microbial penetration test, the number of colonies, and cellular response with the L929 cell line. Rats with full-thickness excisional wounds were treated with kaolin-containing and kaolin-free dressings. Results: The study showed that rats treated with the kaolin-incorporated mats demonstrated a significant closure to nearly 97.62±4.81% after 14 days compared with PVA/chitosan and the sterile gauze, which showed 86.15±8.11% and 78.50±4.22% of wound closure, respectively. The histopathological studies showed that in the PVA/chitosan/kaolin group, dense and regular collagen fibres were formed, while wounds treated with sterile gauze or PVA/chitosan scaffolds had random and loose collagen fibres. Conclusion: Our results show the potential applicability of PVA/chitosan/kaolin scaffolds as a wound care material.

Bio-nanocomposite films based on cellulose nanocrystals filled polyvinyl alcohol/chitosan polymer blend

2015 ◽  
Vol 132 (22) ◽  
pp. n/a-n/a ◽  
Author(s):  
Nassima El Miri ◽  
Karima Abdelouahdi ◽  
Mohamed Zahouily ◽  
Aziz Fihri ◽  
Abdellatif Barakat ◽  
...  
Keyword(s):  
Polyvinyl Alcohol ◽  
Polymer Blend ◽  
Cellulose Nanocrystals ◽  
Nanocomposite Films

Studies on Pectin-Polyvinyl Alcohol–Based Biodegradable Polymer Blend Electrolytes

2020 ◽  
Vol 9 (1) ◽  
pp. 20200095
Author(s):  
C. Nithya Priya ◽  
R. Muruganandham ◽  
M. Muthuvinayagam ◽  
M. Vahini
Keyword(s):  
Polyvinyl Alcohol ◽  
Polymer Blend ◽  
Biodegradable Polymer

"Preparation and Study the Electrical Properties of Chitosan, Hydroxyethylcellulose, and Polyvinyl Alcohol polymer Blend Doped with Different ratios of 4-(2-Pyridylazo)Resorcinol Monosodium Salt Hydrate "

2020 ◽  
Vol 8 (1) ◽  
pp. 49-55
Author(s):  
Zainab J. Sweah ◽  
Fatima H. Malik
Keyword(s):  
Polyvinyl Alcohol ◽  
Polymer Blend ◽  
Young Modulus ◽  
Weight Percent ◽  
Hydroxyethyl Cellulose ◽  
Salt Hydrate ◽  
Ohmic Behavior ◽  
Current Voltage ◽  
Semiconductor Behavior ◽  
Monosodium Salt

"The polymer blend of Chitosan: polyvinyl alcohol (PVA) (1:1) weight percent and hydroxyethyl cellulose (HEC) (0.5%) was prepared. The profile of the sample and its properties were measured by Fourier transfer Infrared spectroscopy (FTIR). The Scanning Electron Microscopy (FESEM) was used to describe the morphology of the polymer blend with two magnifications without any ratio of 4- (2-Pyridylazo) resorcinol monosodium salt hydrate and with 0.15 % of a 4-(2-Pyridylazo) resorcinol monosodium salt hydrate. The mechanical properties were demonstrated and characterized by Elongation and Young modulus. The polymer blend was incorporated with different weight ratios of 4-(2-Pyridylazo) of resorcinol monosodium salt hydrate, (0.03, 0.05, 0.07, 0.09, 0.15) gm of weight %. The current-voltage (I-V) characterization of prepared thin films showed ohmic behavior and the electrical conductivity was improved by increasing the ratio of dopant that leads all samples to reflect a semiconductor behavior.

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