scholarly journals THE SPINNING OF A POLYMER BLEND CONSISTING OF POLYVINYL ALCOHOL AND A POLYMER CONTAINING VINYL PYRROLIDONE UNITS

1961 ◽  
Vol 17 (7) ◽  
pp. 637-643 ◽  
Author(s):  
Kanji Matsubayashi ◽  
Yutaka Hirano
Keyword(s):  
Polyvinyl Alcohol ◽  
Polymer Blend ◽  
Vinyl Pyrrolidone

Assimilation of NH4Br in Polyvinyl Alcohol/Poly(N-vinyl pyrrolidone) Polymer Blend-Based Electrolyte and Its Effect on Ionic Conductivity

2018 ◽  
Vol 18 (6) ◽  
pp. 3944-3953 ◽  
Author(s):  
V Parameswaran ◽  
N Nallamuthu ◽  
P Devendran ◽  
A Manikandan ◽  
E. R Nagarajan
Keyword(s):  
Ionic Conductivity ◽  
Polyvinyl Alcohol ◽  
Polymer Blend ◽  
Vinyl Pyrrolidone

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

Preparation and Characterization of Polymer Blends of Ethyl Cellulose and its Composites

2013 ◽  
Vol 665 ◽  
pp. 336-340 ◽  
Author(s):  
Eknath Nivrtirao ◽  
Basavaraja Sannakki
Keyword(s):  
Activation Energy ◽  
Dielectric Permittivity ◽  
Polymer Blend ◽  
Ethyl Cellulose ◽  
Weight Percent ◽  
Vinyl Pyrrolidone ◽  
X Ray ◽  
Poly Vinyl Pyrrolidone ◽  
Different Thickness

The polymer blend of Ethyl Cellulose (EC) with Poly (vinyl) pyrrolidone (PVP) of various weight percentages at different thickness are used for measurement of dielectric permittivity, electrical conductivity and optical properties. The activation energies of the EC and its blend with PVP are obtained through measurement of dc conductivity. The samples are characterized by using X-ray diffractometer (XRD). The blends of EC with PVP in the ratio of 50:50 weight percent using FTIR over the range of wavenumber 4000-500 cm-1. Key words: Polymer Blend, XRD, SEM, FTIR, dielectric permittivity, activation energy.

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
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