Synthesis and characterization of novel poly(acrylamide-co-acrylic acid-co-2-hydroxy ethyl actylate) hydrogels: Mathematical approach in investigation of swelling kinetics and diffusion models

2011 ◽  
Vol 124 (3) ◽  
pp. 2348-2361 ◽  
Author(s):  
Seema Awasthi ◽  
Reena Singhal
Keyword(s):  
Acrylic Acid ◽  
Diffusion Models ◽  
Synthesis And Characterization ◽  
Swelling Kinetics ◽  
Mathematical Approach ◽  
And Diffusion ◽  
Poly Acrylamide

scholarly journals Synthesis and Characterization of Poly(Acrylamide-Co-Acrylic Acid) Flocculant Obtained by Electron Beam Irradiation

2015 ◽  
Vol 18 (5) ◽  
pp. 984-993 ◽  
Author(s):  
Gabriela Craciun ◽  
Daniel Ighigeanu ◽  
Elena Manaila ◽  
Maria Daniela Stelescu
Keyword(s):  
Electron Beam ◽  
Acrylic Acid ◽  
Electron Beam Irradiation ◽  
Synthesis And Characterization ◽  
Beam Irradiation ◽  
Poly Acrylamide

Investigation of pH-dependent swelling behavior and kinetic parameters of novel poly(acrylamide-co-acrylic acid) hydrogels with spirulina

e-Polymers ◽  
2015 ◽  
Vol 15 (2) ◽  
pp. 81-93 ◽  
Author(s):  
Demet Aydınoğlu
Keyword(s):  
Acrylic Acid ◽  
Swelling Behavior ◽  
Swelling Kinetics ◽  
Mechanical Behaviors ◽  
Ph Values ◽  
Diffusion Parameters ◽  
Ph Dependent ◽  
And Diffusion ◽  
Radical Solution ◽  
Poly Acrylamide

AbstractPoly(acrylamide-co-acrylic acid)-spirulina (AAm-AAc-Sp) hydrogels were prepared by free radical solution polymerization of the monomer acrylamide (AAm) and the comonomer acrylic acid (AAc) with N,N-methylene bisacrylamide (BAAm) as the crosslinker in the presence of spirulina (Sp), which is a microalga species. The swelling ratios of the hydrogels were followed by gravimetric measurements. Hence, swelling kinetics and diffusion parameters were determined. Furthermore, the morphological structures and mechanical behaviors of the hydrogels were investigated by scanning electron microscopy and by using a uniaxial compression machine, respectively. All the results showed that spirulina had strong influence in the pH-dependent swelling behavior, as well as on the kinetic and diffusion parameters due to its interaction with the acrylic acid units. These interactions were attributed to spirulina, which caused a change in pore size and its distribution. The present novel hydrogels showed high swelling at neutral pH, but collapsed slowly at low and high pH values. Thus, these AAm-AAc-Sp hydrogels can be good candidates for pH-sensitive drug delivery systems.

Synthesis and characterization of hydrogels based on gamma irradiation of acrylic acid and methacrylic acid

2009 ◽  
Vol 30 (5) ◽  
pp. 569-575 ◽  
Author(s):  
Horia M. Nizam El-Din ◽  
El-Sayed A. Hegazy ◽  
Doaa M. Ibraheim
Keyword(s):  
Acrylic Acid ◽  
Gamma Irradiation ◽  
Methacrylic Acid ◽  
Synthesis And Characterization

Synthesis and characterization of SPE membrane based on sulfonated FEP-g-acrylic acid by radiation induced graft copolymerization for PEM fuel cell

2004 ◽  
Vol 15 (5) ◽  
pp. 270-274 ◽  
Author(s):  
M. Patri ◽  
Varsha R. Hande ◽  
Swati Phadnis ◽  
B. Somaiah ◽  
Suhasini Roychoudhury ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Acrylic Acid ◽  
Graft Copolymerization ◽  
Pem Fuel Cell ◽  
Synthesis And Characterization ◽  
Radiation Induced
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