Amine-Modified Poly(Vinyl Alcohol)s as Non-viral Vectors for siRNA Delivery: Effects of the Degree of Amine Substitution on Physicochemical Properties and Knockdown Efficiency

2010 ◽  
Vol 27 (12) ◽  
pp. 2670-2682 ◽  
Author(s):  
Juliane Nguyen ◽  
Regina Reul ◽  
Susanne Roesler ◽  
Eyas Dayyoub ◽  
Thomas Schmehl ◽  
...  
Keyword(s):  
Physicochemical Properties ◽  
Vinyl Alcohol ◽  
Viral Vectors ◽  
Sirna Delivery ◽  
Poly Vinyl Alcohol

Silver/poly(vinyl alcohol)/chitosan/graphene hydrogels – Synthesis, biological and physicochemical properties and silver release kinetics

2018 ◽  
Vol 154 ◽  
pp. 175-185 ◽  
Author(s):  
Katarina Nešović ◽  
Ana Janković ◽  
Vesna Kojić ◽  
Maja Vukašinović-Sekulić ◽  
Aleksandra Perić-Grujić ◽  
...  
Keyword(s):  
Physicochemical Properties ◽  
Vinyl Alcohol ◽  
Release Kinetics ◽  
Poly Vinyl Alcohol ◽  
Silver Release

scholarly journals Synthesis and Physicochemical Properties of Poly(vinyl) Alcohol Nanocomposites Reinforced with Nanocrystalline Cellulose from Tea (Camellia sinensis) Waste

Materials ◽  
2021 ◽  
Vol 14 (23) ◽  
pp. 7154
Author(s):  
Fauzi Handoko ◽  
Yusril Yusuf
Keyword(s):  
Physicochemical Properties ◽  
Vinyl Alcohol ◽  
Chemical Process ◽  
Alkali Treatment ◽  
Nanocrystalline Cellulose ◽  
Poly Vinyl Alcohol ◽  
Thermal And Mechanical Properties ◽  
General Increase ◽  
Mean Diameter ◽  
Tea Waste

The purpose of this study was to utilize cellulose from tea waste as nanocrystalline cellulose (NCC), which is used as a filler in poly(vinyl) alcohol (PVA) nanocomposites. To obtain the NCC, a chemical process was conducted in the form of alkali treatment, followed by bleaching and hydrolysis. Nanocomposites were formed by mixing PVA with various NCC suspensions. With chemical treatment, lignin and hemicellulose can be removed from the tea waste to obtain NCC. This can be seen in the functional groups of cellulose and the increase in crystallinity. The NCC had a mean diameter of 6.99 ± 0.50 nm. Furthermore, the addition of NCC to the PVA nanocomposite influenced the properties of the nanocomposites. This can be seen in the general increase in opacity value, thermal and mechanical properties, and crystallinity, as well as the decrease in the value of the swelling ratio after adding NCC. This study has revealed that NCC from tea waste can be used to improve the physicochemical properties of PVA film.

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