scholarly journals Study on swelling behaviour of hydrogel based on acrylic acid and pectin from dragon fruit

2014 ◽  
Author(s):  
Mohd Fadzlanor Abdullah ◽  
Azwani Mat Lazim
Keyword(s):  
Acrylic Acid ◽  
Swelling Behaviour ◽  
Dragon Fruit

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.

scholarly journals Swelling of Hydrogels Based on Carboxymethylated Starch and Poly(Acrylic Acid): Nonlinear Rheological Approach

Polymers ◽  
2020 ◽  
Vol 12 (11) ◽  
pp. 2564
Author(s):  
Grzegorz Kowalski ◽  
Paweł Ptaszek ◽  
Łukasz Kuterasiński
Keyword(s):  
Acrylic Acid ◽  
Aqueous Environment ◽  
Large Amplitude Oscillatory Shear ◽  
Gel Structure ◽  
Swelling Behaviour ◽  
Molar Ratios ◽  
Modified Starches ◽  
High Amylose ◽  
Covalent Interactions

In this paper, the authors discuss the results of research on the preparation and properties of superabsorbent hydrogels based on carboxymethylated high-amylose corn starches. They were obtained by graft copolymerisation (in an aqueous environment) of acrylic acid and its sodium salt onto modified starches (with various substitution degrees DS = 0.2 and 0.8), using potassium persulfate as an initiator and N,N’-methylenebisacrylamide (MBA) as a cross-linker. Modified starches, with various DS, were used to synthesise two series of hydrogels with varying molar ratios of cross-linkers to monomers. The swelling behaviour of hydrogels was studied and their properties were estimated using the kinetic equation. The occurrence of starch–polyacrylic acid covalent interactions was demonstrated by FTIR analysis. Nonlinear rheological methods have proved to be very effective in assessing the mechanical properties of hydrogels. LAOS (large -amplitude oscillatory shear) analysis allowed the determination of the durability of the gel structure as a function of the amount of absorbed water.

Overentrant swelling behaviour of poly(potassium, 3-sulfopropyl acrylate-acrylic acid) gels

2012 ◽  
Vol 19 (12) ◽  
Author(s):  
F. Narimani ◽  
M. J. Zohuriaan-Mehr ◽  
K. Kabiri ◽  
H. Bouhendi ◽  
H. Omidian ◽  
...  
Keyword(s):  
Acrylic Acid ◽  
Swelling Behaviour
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