scholarly journals Effect of thermal annealing on a bilayer polyvinyl alcohol/polyacrylic acid electrospun hydrogel nanofibres loaded with doxorubicin and clarithromycin for a synergism effect against osteosarcoma cells

2021 ◽  
Vol 22 ◽  
pp. 100549
Author(s):  
B.S. Chee ◽  
G.G. de Lima ◽  
T.A.M. de Lima ◽  
V. Seba ◽  
C. Lemarquis ◽  
...  
Nanoscale ◽  
2019 ◽  
Vol 11 (30) ◽  
pp. 14250-14255 ◽  
Author(s):  
Xin Bao ◽  
Elena V. Ushakova ◽  
Enshan Liu ◽  
Zhengjie Zhou ◽  
Di Li ◽  
...  

On/off switching of the phosphorescence signal is realized in a composite carbon dot/polyvinyl alcohol material via thermal annealing, water spraying, and 1532 nm laser writing, respectively, which provides a new route to multiple data encryption.


Author(s):  
Межлум Левонович Ерицян ◽  
Армен Мамиконович Арустамян ◽  
Валентина Межлумовна Мависакалян

Исследована реология водных растворов полиакриловой кислоты, полиакриламида, поливинилового спирта, сополимера акриловой кислоты с акриламидом, a также смесeй водных растворов этих полимеров. В результате образования ассоциатов между функциональными группами уаказанных полимеров значительно повышается относительная вязкость их водных растворов. Установлено, что при температуре 95C в водных растворах полиакриламида и сополимера акриловой кислоты с акриламидом происходит интенсивное выделение аммиака с одновременным образованием полимера пространственной структуры. The rheology of aqueous solutions of polyacrylic acid, polyacrylamide, polyvinyl alcohol, copolymer of acrylic acid with acrylamide, as well as mixtures of aqueous solutions of these polymers was investigated. As a result of the formation of associates between the functional groups of the polymers indicated, the relative viscosity of their aqueous solutions significantly increases. It was established that at a temperature of 95°C in aqueous solutions of polyacrylamide and a copolymer of acrylic acid and acrylamide, there is an intense release of ammonia with simultaneous formation of a polymer of spatial structure.


2015 ◽  
Vol 654 ◽  
pp. 15-19
Author(s):  
Sandra Cabanas-Polo ◽  
Aldo R. Boccaccini

The interaction between bioactive glass particles and polymers with different functional groups has been established in this work to better understand and control the colloidal processing of the bioactive glass phase. Cationic polyvinylpyrrolidone (PVP), anionic polyacrylic acid (PAA) and neutral polyvinyl alcohol (PVA) were selected and the surface reactions in alcoholic media and between bioactive glass particles and polymers were considered. All three polymers were successfully employed to obtain soft composite coatings incorporating bioactive glass particles.


2016 ◽  
Vol 89 (11) ◽  
pp. 1838-1845 ◽  
Author(s):  
I. Yu. Dmitriev ◽  
V. P. Ivanov ◽  
N. V. Bobrova ◽  
Z. F. Zoolshoev ◽  
I. S. Kuryndin ◽  
...  

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