Poly(N-isopropylacrylamide) Prepared by Free-Radical Polymerization in Aqueous Solutions and in Nanocomposite Hydrogels

2011 ◽  
Vol 306-307 (1) ◽  
pp. 33-48 ◽  
Author(s):  
Kazutoshi Haraguchi ◽  
Yingjia Xu ◽  
Guang Li
Keyword(s):  
Free Radical ◽  
Aqueous Solutions ◽  
Radical Polymerization ◽  
Free Radical Polymerization ◽  
Nanocomposite Hydrogels

A Fast Responsive Thermosensivtive P(NIPAM/AA-Na) Hydrogel and its Fire Suppressing Experiment

2013 ◽  
Vol 668 ◽  
pp. 219-225
Author(s):  
Chun Lei Jia ◽  
Wang Qun ◽  
Kai Tang
Keyword(s):  
Free Radical ◽  
Aqueous Solutions ◽  
Radical Polymerization ◽  
Free Radical Polymerization ◽  
Radiant Heat ◽  
Sodium Acrylate ◽  
Macroporous Structure ◽  
Thermosensitive Hydrogel ◽  
Fire Extinguishing ◽  
Water Damage

A fast responsive thermosensitive hydrogel poly((N-isopropy- lacrylamide/Sodium acrylate) (P(NIPAm/AA-Na)) were prepared by free radical polymerization methods. The low critical soluble temperatures (LCST) of the hydrgols is about 60°C in 5%wt aqueous solutions. The heterogeneous macroporous structure was observed by SEM. Deswelling degree of the hydrogel is up to 75% in 60 seconds. The 1A rating wood stacking fire were suppressed with water, colloid extinguishing agent B of Zhejiang University and the thermosensitive P(NIPAm/AA-Na) hydrogel respectively. Radiant heat and the temperature were recorded by several heat probes and thermocouples during extinguishing. The results showed that the fire extinguishing-time of the thermosensitive hydrogel is shortest at the same practical rate of application among the three. Consumption of extinguishing agent is the least. The water damage to the section unfired is low after fire extinguishing. The extinguishing agent residual is easy to clean, so the extinguishing efficiency is high.

Free-radical polymerization of urea, acrylic acid, and glycerol in aqueous solutions

2015 ◽  
Vol 55 (6) ◽  
pp. 1219-1229 ◽  
Author(s):  
Bruno S. Fernandes ◽  
José Carlos Pinto ◽  
Elaine C.M. Cabral-Albuquerque ◽  
Rosana L. Fialho
Keyword(s):  
Free Radical ◽  
Acrylic Acid ◽  
Aqueous Solutions ◽  
Radical Polymerization ◽  
Free Radical Polymerization

High strength and anti-fatigue nanocomposite hydrogels prepared via self-initiated free radical polymerization triggered by daylight

2018 ◽  
Vol 42 (14) ◽  
pp. 11796-11803 ◽  
Author(s):  
Bo Xu ◽  
Yuwei Liu ◽  
Yu Li ◽  
Lanlan Wang ◽  
Nannan Li ◽  
...  
Keyword(s):  
Free Radical ◽  
Radical Polymerization ◽  
Free Radical Polymerization ◽  
High Strength ◽  
Nanocomposite Hydrogel ◽  
Nanocomposite Hydrogels ◽  
New Type

A new type of high strength nanocomposite hydrogel was synthesized using TiO2 nanoparticles as both cross-linkers and photo-initiators under daylight.

Non-isothermal Kinetics of Free Radical Polymerization of 2-Phenylethyl (Meth)acrylate

2018 ◽  
Vol 8 (3) ◽  
pp. 585-594
Author(s):  
Khdbudin Mulani ◽  
Ravindra Ghorpade ◽  
Surendra Ponrathnam ◽  
Nayaku Chavan ◽  
Kamini Donde
Keyword(s):  
Free Radical ◽  
Radical Polymerization ◽  
Free Radical Polymerization ◽  
Isothermal Kinetics ◽  
Kinetics Of

Oxygen-Initiated Free-Radical Polymerization of Alkyl Acrylates at High Temperatures

2021 ◽  
Author(s):  
Shi Liu ◽  
Lauren Chua ◽  
Ahmad Arabi Shamsabadi ◽  
Patrick Corcoran ◽  
Abhirup Patra ◽  
...  
Keyword(s):  
Free Radical ◽  
Radical Polymerization ◽  
High Temperatures ◽  
Free Radical Polymerization ◽  
Alkyl Acrylates
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