Rheological Behavior of Aqueous Poly(vinyl alcohol) Solution during a Freeze–Thaw Gelation Process

2020 ◽  
Vol 53 (9) ◽  
pp. 3452-3463 ◽  
Author(s):  
Nidhi Joshi ◽  
Khushboo Suman ◽  
Yogesh M. Joshi
Keyword(s):  
Rheological Behavior ◽  
Vinyl Alcohol ◽  
Alcohol Solution ◽  
Poly Vinyl Alcohol ◽  
Gelation Process ◽  
Freeze Thaw

Effect of TiO2 nanoparticle on rheological behavior of poly(vinyl alcohol) solution

2015 ◽  
Vol 23 (3) ◽  
pp. 234-240 ◽  
Author(s):  
Abolfazl Shakouri ◽  
Hadi Ahmari ◽  
Mohammad Hojjat ◽  
Saeed Zeinali Heris
Keyword(s):  
Rheological Behavior ◽  
Vinyl Alcohol ◽  
Alcohol Solution ◽  
Tio2 Nanoparticle ◽  
Poly Vinyl Alcohol

scholarly journals Enhancing the Freeze-Thaw Durability of Concrete Through Ice Recrystallization Inhibition by Poly(vinyl Alcohol)

2019 ◽  
Author(s):  
Zhengyao Qu ◽  
Shuaiqi Guo ◽  
Christian C. M. Sproncken ◽  
Romà Surís-Valls ◽  
qingliang yu ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Vinyl Alcohol ◽  
Cement Hydration ◽  
Poly Vinyl Alcohol ◽  
Seasonal Temperature ◽  
Ice Recrystallization Inhibition ◽  
Ice Recrystallization ◽  
Freeze Thaw ◽  
Recrystallization Inhibition ◽  
Durability Of Concrete

Frost weathering of porous materials caused by seasonal temperature changes is a major source of damage to the world’s infrastructure and cultural heritage. Here we investigate poly(vinyl alcohol) (PVA) addition as a means to enhance the freeze-thaw durability of concrete without compromising its structural or mechanical integrity. We evaluate the ice recrystallization inhibition activity of PVA in a cementitious environment and the impact of PVA on key structural and mechanical properties, such as cement hydration (products), microstructure, strength, as well as freeze‑thaw resistance. We find that a low amount of PVA significantly reduces the surface scaling of concrete and displays excellent ice recrystallization inhibition in the saturated Ca(OH)<sub>2 </sub>solution which has a similar pH value as cement pore solution, while it does not affect cement hydration, microstructure, nor its mechanical properties. These findings contribute to new insights on freeze-thaw damage mechanism and more importantly we disclose a new direction for the design of concrete with excellent freeze‑thaw resistance.

Preparation of La0.8Sr0.2Ga0.83Mg0.17O2.815 powders by microwave-induced poly(vinyl alcohol) solution polymerization

2006 ◽  
Vol 162 (1) ◽  
pp. 146-150 ◽  
Author(s):  
Yuling Zhai ◽  
Chang Ye ◽  
Feng Xia ◽  
Jianzhong Xiao ◽  
Lei Dai ◽  
...  
Keyword(s):  
Vinyl Alcohol ◽  
Alcohol Solution ◽  
Poly Vinyl Alcohol ◽  
Solution Polymerization

scholarly journals Drug Release from Freeze-Thaw Poly (vinyl alcohol) Gel

1987 ◽  
Vol 107 (3) ◽  
pp. 233-237 ◽  
Author(s):  
AKIRA TAKAMURA ◽  
MOTOHARU ARAI ◽  
FUMIYOSHI ISHII
Keyword(s):  
Drug Release ◽  
Vinyl Alcohol ◽  
Poly Vinyl Alcohol ◽  
Freeze Thaw
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