Synthesis of Poly (Acrylamide-co-Acrylic Acid) based Superabsorbent Hydrogels: Study of Network Parameters and Swelling Behaviour

2007 ◽  
Vol 46 (5) ◽  
pp. 481-488 ◽  
Author(s):  
Rajive Singh Tomar ◽  
Indu Gupta ◽  
Reena Singhal ◽  
A. K. Nagpal
Keyword(s):  
Acrylic Acid ◽  
Swelling Behaviour ◽  
Network Parameters ◽  
Poly Acrylamide ◽  
Superabsorbent Hydrogels

scholarly journals SYNTHESIS OF POLY(ACRYLAMIDE-CO-ACRYLIC ACID)-STARCH BASED SUPERABSORBENT HYDROGELS BY GAMMA RADIATION: STUDY ITS SWELLING BEHAVIOR

2012 ◽  
Vol 12 (2) ◽  
pp. 113-118 ◽  
Author(s):  
Erizal Erizal
Keyword(s):  
Acrylic Acid ◽  
Gamma Radiation ◽  
Starch Content ◽  
Swelling Kinetics ◽  
Equilibrium Degree ◽  
Gel Fraction ◽  
Increase Irradiation Dose ◽  
Radiation Study ◽  
Poly Acrylamide ◽  
Superabsorbent Hydrogels

Modification of poly (acrylamide-co-acrylic acid) superabsorbent hydrogels with varying starch concentration (1-3%) via simultaneous gamma radiation have been carried out. The structure and morphology of copolymers were characterization by Fourier transform infra red spectroscopy and scanning electron microscopy. The gel fraction, swelling kinetics and the equilibrium degree of swelling (EDS) of the hydrogels were studied. It was found that the an increase in the starch content present in the hydrogels (1-3%) and with increase irradiation dose  from 10 kGy up to 30 kGy, the swelling ratio decreased from 250-100 g/g. Incorporation of 1% starch increases the EDS of the hydrogels up 350 g/g. Under maximum conditions, poly(AAm-co-AA)-starch hydrogels with high gel fraction (~93%) was prepared from aqueous solution containing 5% AAm, 15% acrylic acid and 0-3% starch. The hydrogels were sensitive against salts solution.

Preparation and characterization of a novel pH-sensitive Salecan-g-poly(acrylic acid) hydrogel for controlled release of doxorubicin

2015 ◽  
Vol 3 (13) ◽  
pp. 2685-2697 ◽  
Author(s):  
Xinyu Hu ◽  
Wei Wei ◽  
Xiaoliang Qi ◽  
Hao Yu ◽  
Liandong Feng ◽  
...  
Keyword(s):  
Controlled Release ◽  
Acrylic Acid ◽  
Ph Sensitive ◽  
Swelling Behaviour ◽  
Poly Acrylic Acid

The pH-sensitive swelling behaviour and DOX release of Salecan-g-PAA hydrogels are discussed.

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