Chemically Induced Dynamic Electron Polarization Studies of a pH-Dependent Free Radical Cage Formed in a Photoinitiator Labeled Poly(methacrylic acid)

2002 ◽  
Vol 35 (24) ◽  
pp. 9151-9155 ◽  
Author(s):  
Ashok Maliakal ◽  
Matthias Weber ◽  
Nicholas J. Turro ◽  
Mark M. Green ◽  
Sung Yun Yang ◽  
...  
Keyword(s):  
Free Radical ◽  
Methacrylic Acid ◽  
Electron Polarization ◽  
Chemically Induced ◽  
Polarization Studies ◽  
Ph Dependent

Chemically induced dynamic electron polarization studies on photolysis of hexaphenyldisilane, -digermane and -distannane

2001 ◽  
Vol 3 (6) ◽  
pp. 1011-1014 ◽  
Author(s):  
Islam S. M. Saiful ◽  
Yasunori Ohba ◽  
Kunio Mochida ◽  
Seigo Yamauchi
Keyword(s):  
Electron Polarization ◽  
Chemically Induced ◽  
Polarization Studies

Temperature and pH-dependent swelling and copper(ii) adsorption of poly(N-isopropylacrylamide) copolymer hydrogel

RSC Advances ◽  
2015 ◽  
Vol 5 (76) ◽  
pp. 62091-62100 ◽  
Author(s):  
Jinjin Cheng ◽  
Guorong Shan ◽  
Pengju Pan
Keyword(s):  
Free Radical ◽  
Radical Polymerization ◽  
Maleic Acid ◽  
Adsorption Process ◽  
Ph Value ◽  
Free Radical Polymerization ◽  
Stimuli Responsive ◽  
Copolymer Hydrogel ◽  
Ph Dependent

Poly(N-isopropylacrylamide-co-acrylamide-co-maleic acid) (PNIPAM-AM-MA) hydrogel, which can make the Cu2+ adsorption process stimuli-responsive under temperature and pH value control, has been synthesized by free radical polymerization.

In air synthesis of GA-cl-poly(MAA) hydrogel and study of its salt- resistant swelling behavior in different salts

e-Polymers ◽  
2008 ◽  
Vol 8 (1) ◽  
Author(s):  
B. S. Kaith ◽  
Shabnam Ranjta ◽  
Kiran Kumar
Keyword(s):  
Free Radical ◽  
Reaction Time ◽  
Methacrylic Acid ◽  
Salt Concentration ◽  
Gum Arabic ◽  
Swelling Behavior ◽  
Temperature Reaction ◽  
Reaction Parameters ◽  
Potassium Persulphate ◽  
Cross Linker

AbstractA novel hydrogel has been synthesized by grafting methacrylic acid (MAA) onto Gum arabic (GA) through free radical graft co-polymerization in the presence of potassium persulphate (KPS) as an initiator and hexamethylene tetramine (HMTA) as a cross-linker. Various reaction parameters like reaction temperature, reaction time, concentration of initiator, amount of solvent, pH, concentration of monomer and concentration of cross-linker were optimized. GAcl-poly(MAA) was characterized by FTIR spectroscopy, SEM and TGA-DTA techniques. Optimized polymer was studied for its salt-resistant swelling behavior in different solutions: NaCl, MgCl2, CaCl2, FeCl3, ZnCl2 and BaCl2 as a function of salt concentration, temperature and pH. It was observed that GA-cl-poly(MAA) exhibits following salt-resistant swelling trend in different salts: NaCl > ZnCl2 > MgCl2 > CaCl2 > BaCl2 > FeCl3

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