Development of Biocompatible Tissue-Adhesive Materials of Alginte/Poly(acrylic acid) Using Double-Network Concept

Polymer Korea ◽  
2021 ◽  
Vol 45 (6) ◽  
pp. 890-896
Author(s):  
Eun Ji Kang ◽  
Jin A Kim ◽  
Yang Ho Na
Keyword(s):  
Acrylic Acid ◽  
Tissue Adhesive ◽  
Double Network ◽  
Network Concept ◽  
Adhesive Materials ◽  
Poly Acrylic Acid

A pH-sensitive, strong double-network hydrogel: Poly(ethylene glycol) methyl ether methacrylates-poly(acrylic acid)

2011 ◽  
Vol 50 (6) ◽  
pp. 423-430 ◽  
Author(s):  
Sina Naficy ◽  
Joselito M. Razal ◽  
Philip G. Whitten ◽  
Gordon G. Wallace ◽  
Geoffrey M. Spinks
Keyword(s):  
Acrylic Acid ◽  
Ethylene Glycol ◽  
Methyl Ether ◽  
Ph Sensitive ◽  
Poly Ethylene Glycol ◽  
Double Network ◽  
Poly Ethylene ◽  
Glycol Methyl Ether ◽  
Poly Acrylic Acid

Poly(acrylic acid)‐chitosan @ tannic acid double‐network self‐healing hydrogel based on ionic coordination

2020 ◽  
Vol 31 (7) ◽  
pp. 1648-1660 ◽  
Author(s):  
Tingting Li ◽  
Xiangming Hu ◽  
Qingsong Zhang ◽  
Yanyun Zhao ◽  
Peng Wang ◽  
...  
Keyword(s):  
Acrylic Acid ◽  
Tannic Acid ◽  
Self Healing ◽  
Double Network ◽  
Poly Acrylic Acid

Synthesis and properties of sodium alginate/poly(acrylic acid) double-network superabsorbent

e-Polymers ◽  
2015 ◽  
Vol 15 (4) ◽  
pp. 271-278 ◽  
Author(s):  
Jie Wu ◽  
Yanmei Zhou ◽  
Yang Meng ◽  
Jiaxing Zhang ◽  
Qingbing Liu ◽  
...  
Keyword(s):  
Acrylic Acid ◽  
Sodium Alginate ◽  
Metal Ion ◽  
Step Method ◽  
Experimental Conditions ◽  
Double Network ◽  
Metal Ion Removal ◽  
Removal Capacity ◽  
Cross Linker ◽  
Poly Acrylic Acid

AbstractA tough double-network (DN) superabsorbent was synthesized by a two-step method using N,N-methylenebisacrylamide as a covalent cross-linker for one monomer [acrylic acid (AA)], Ca2+ (CaCl2) as an ionic cross-linker for the other monomer (sodium alginate [SA]) and ammonium peroxodisulfate as the redox initiator. The optimized experimental conditions for the absorbency in deionized water were determined according to orthogonal experiments. Unlike conventional chemical cross-linked single-network superabsorbents, SA/poly(acrylic acid) (PAA) DN superabsorbents exhibit superb mechanical properties. Compared with the tensile strength of PAA-only superabsorbents, that of SA/PAA DN superabsorbents showed an approximately 371.9% increase with increasing amount of 6 wt.% SA. We also investigated the capacity of SA/PAA DN superabsorbents to remove heavy metal ions. It was found that the addition of SA can truly increase the metal ion removal capacity of the PAA superabsorbents and that the affinity order was Pb2+>Zn2+.

Selective Adsorption and Separation of Organic Dyes by Poly(acrylic acid) Hydrogels Formed with Spherical Polymer Brushes and Chitosan

2018 ◽  
Vol 71 (11) ◽  
pp. 846 ◽  
Author(s):  
Rui Zhang ◽  
Hongwei Peng ◽  
Tianxu Zhou ◽  
Min Li ◽  
Xuhong Guo ◽  
...  
Keyword(s):  
Acrylic Acid ◽  
Polymer Brushes ◽  
Electrostatic Interactions ◽  
Separation Efficiency ◽  
Organic Dyes ◽  
Selective Adsorption ◽  
Cationic Dyes ◽  
Order Kinetic ◽  
Double Network ◽  
Poly Acrylic Acid

Direct discharge of industry organic dyes has caused serious environmental pollution. In this study, a series of double network poly(acrylic acid) (PAA) hydrogels were fabricated with spherical polymer brushes (SPBs) and chitosan (CS) as crosslinker. Neutral spherical polyelectrolyte brushes of polystyrene–poly-N-isopropylacrylamide (PNIPAM@PS) in which poly(N-isopropylacrylamide) (PNIPAM) arms were grafted on polystyrene (PS) nanospheres, were employed as macro-crosslinkers. The innumerable hydrogen bonds both between the highly entangled PAA chains and between PNIPAM and the PAA chains composed the first network of the hydrogels. The electrostatic interactions between CS and the PAA chains formed the second network of the hydrogels. These double network hydrogels, named PNIPAM@PS/CS/PAA, achieve good compressive performance and a low swell ratio because of their compact structure through plentiful hydrogen bonding and electrostatic interactions. The hydrogel could absorb cationic dyes from water with high separation efficiency and selectivity due to the electrostatic interaction between the carboxy groups and dye molecules. The adsorption process fitted a pseudo-second-order kinetic model and Langmuir isotherm model very well. Moreover, the hydrogel can separate cationic dyes from mixed dye solutions through electrostatic interactions. After being loaded with silver nanoparticles, the obtained silver@hydrogel exhibited a good capacity for the photocatalytic degradation towards different dyes. The hydrogels are promising for dye-containing wastewater treatment.

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