SYNTHESIS AND SWELLING KINETICS OF A PH-SENSITIVE TERPOLYMERIC HYDROGEL SYSTEM

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BAJPAI S.K.; DUBEY S.

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Journal: Iranian Polymer Journal Year:2004 | Volume:13 | Issue:3 Page(s): 189-203

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Information Journal Paper

Title

SYNTHESIS AND SWELLING KINETICS OF A PH-SENSITIVE TERPOLYMERIC HYDROGEL SYSTEM

Author(s)

BAJPAI S.K. | DUBEY S. | Issue Writer Certificate

Keywords

TERPOLYMERIC HYDROGELQ4

COLONQ4

DRUG-DELIVERYQ4

PH-DEPENDENT SWELLINGQ4

ACRYLIC ACIDQ4

Abstract

We have developed a pH-sensitive TERPOLYMERIC HYDROGEL system based on acrylamide, methacrylamide and ACRYLIC ACID by aqueous polymerization. The hydrogels exhibited a fair PH-DEPENDENT SWELLING behaviour with transition from Fickian (n = 0.43) to non- Fickian (n = 0.83) as the pH of the swelling medium varied from 1.0 to 8.0. The gel exhibited a number of swelling-deswelling cycles as the pH of the swelling medium was varied from 7.4 to 1.0. The equilibrium water uptake was found to increase with the amount of ACRYLIC ACID in the gels when studied in the media of pH 7.4. However, at pH 1.0, the degree of swelling was observed to decrease with monomer acid content. The activation energy for the swelling process, as calculated from the Arrehenius plot, was found to be 15.52 kJ mol-1. The gel also showed a good swelling response when put in the media of continuous varying pH. The minimum swelling in the acidic pH was explained on the basis of formation of complex structure within the gel network due to H-bonding interactions between -COOH and -CONH2 groups.

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APA: Copy

BAJPAI, S.K., & DUBEY, S.. (2004). SYNTHESIS AND SWELLING KINETICS OF A PH-SENSITIVE TERPOLYMERIC HYDROGEL SYSTEM . IRANIAN POLYMER JOURNAL (ENGLISH), 13(3), 189-203. SID. https://sid.ir/paper/85868/en

Vancouver: Copy

BAJPAI S.K., DUBEY S.. SYNTHESIS AND SWELLING KINETICS OF A PH-SENSITIVE TERPOLYMERIC HYDROGEL SYSTEM . IRANIAN POLYMER JOURNAL (ENGLISH)[Internet]. 2004;13(3):189-203. Available from: https://sid.ir/paper/85868/en

IEEE: Copy

S.K. BAJPAI, and S. DUBEY, “SYNTHESIS AND SWELLING KINETICS OF A PH-SENSITIVE TERPOLYMERIC HYDROGEL SYSTEM ,” IRANIAN POLYMER JOURNAL (ENGLISH), vol. 13, no. 3, pp. 189–203, 2004, [Online]. Available: https://sid.ir/paper/85868/en

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