Preparation, Characterization, and swelling study of N,N’-dimethylacrylamide/acrylic acid amphiphilic hydrogels in different conditions

Jozaghkar, Mohammad Reza; Azar, Amir Sepehrian; Ziaee, Farshid

doi:10.1007/s00289-021-03760-4

Cited by 15 publications

(13 citation statements)

References 29 publications

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“…Recently, a similar temperature-dependent increase was reported for the temperature-dependent swelling of N , N ′-dimethylacrylamide/acrylic acid amphiphilic hydrogels. 47 The authors stated that high temperature caused the swelling ratio to increase, and when the temperature increased from 25 °C to 80 °C, the swelling ratio doubled. For the present semi-IPNs, when compared according to the ST content, the swelling decreased significantly with increasing ST concentration, as observed in the water swelling experiments at room temperature.…”

Section: Resultsmentioning

confidence: 99%

Anionic starch-based hybrid cryogel-embedded ZnO nanoparticles: tuning the elasticity and pH-functionality of biocomposites with dicarboxylic acid units

Ciftbudak,

Orakdogen

2024

Soft Matter

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Section: Resultsmentioning

confidence: 99%

Anionic starch-based hybrid cryogel-embedded ZnO nanoparticles: tuning the elasticity and pH-functionality of biocomposites with dicarboxylic acid units

Ciftbudak,

Orakdogen

2024

Soft Matter

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“…However, if swelling behavior is dominated by non-Fickian diffusion, (n) is between 0.5 and 1, and both water diffusion and polymer chains relaxation is responsible for the water absorption. Finally, when the swelling process is dominated by anomalous diffusion, (n) is more than 1, and the diffusion system is controlled by the relaxation of polymer chains [ 18 ]. Table 3 represents the values of the key parameters of both models.…”

Section: Resultsmentioning

confidence: 99%

“…The theoretical values of the equilibrium swelling degree (S eq ), obtained by Schott’s 2nd-order-kinetics models, are closed to the experimental results. Consequently, the chemical structure of the repeating units of monomer in the semi-IPN hydrogels affects the swelling process [ 18 ].…”

Section: Resultsmentioning

confidence: 99%

“…These results reflect that by the increase in temperature, the polymer chains expand, and the thermal mobility of polymer molecules inside the hydrogel, as well as the interactions among the functional groups of hydrogels and molecules of water, enhances. Also, it should be mentioned that as temperature increases the H-bonds inside the hydrogels were broken, suggesting an increase in the swelling ratio [ 18 , 22 , 29 ].…”

Section: Resultsmentioning

confidence: 99%

“…Further study was performed to track the swelling properties and water diffusion of polymer networks. For this purpose, Fickian diffusion model and Schott’s 2nd-order-kinetic model are utilized [ 18 ].…”

Section: Methodsmentioning

confidence: 99%

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Preparation, assessment, and swelling study of amphiphilic acrylic acid/chitosan-based semi-interpenetrating hydrogels

JOZAGHKAR¹,

SEPEHRIANAZAR²,

ZIAEE³

et al. 2022

Turkish Journal of Chemistry

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The aim of this study was to synthesize amphiphilic semi-IPN hydrogels based on acrylic acid (AA) and chitosan (CS) using AIBN as an initiator and N,N’methylene bis acrylamide as a crosslinking agent. The swelling behavior of the hydrogels was evaluated at a variety of pH values, temperature, the salinity of media and time, and the swelling mechanism was investigated using Fickian diffusion and Schott’s 2nd-order-kinetics models. FTIR spectroscopy was used to confirm the synthesis of AA/CS hydrogel. The swelling results showed that, in the acidic media, as the CS content increase the hydrogel swelling ratio reduces. It was found that the maximum swelling ratio (8550%) is attained for the sample HAC2 with an AA/CS ratio of 1:0.001 in the alkaline Ph value. It also revealed that the absorption capacity is directly dependent on the temperature and inversely related to the salt concentration. Besides, the absorption capacity of the synthesized hydrogels in the saline solution of Na 2 SO 4 was higher than NaCl.

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Ultrasmall Sulfur‐Dots‐Mediated Facile Photopolymerization for the Production of Smart Injectable Ink for 3D Printing Applications

Singh,

Sinha,

Sahu

et al. 2024

Adv Funct Materials

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Sulfur dots (S‐dots) eliminate the need of expensive and toxic conventional photocatalysts or transition metal in photoinduced reversible deactivation radical polymerization (photoRDRP). Herein, non‐metallic S‐dots mediated photoRDRP of N,N‐dimethyl acrylamide (DMA) are developed for the first time. This technique allows for the precise synthesis of narrow‐dispersed poly(N,N‐dimethyl acrylamide) (PDMA) and double hydrophilic poly(N, N‐dimethyl acrylamide)‐block‐poly(2‐hydroxyethyl acrylamide) (PDMA‐b‐PHEAA) diblock copolymer suitable for contaminant removal from water. Also, its subsequent modification into a poly(N,N‐dimethyl acrylamide)‐block‐poly(N‐(2‐((4‐vinylbenzyl)oxy)ethyl)acrylamide) (PDMA‐b‐PVBEAA) diblock copolymer gives ultra‐fast gelation and production of writable ink‐gel, which is exceptionally well‐suited for 3D printing applications, enabling the creation of precise and defined shapes. This innovative material serves as an intriguing scaffold for tissue engineering and other biomaterial applications, especially in areas that demand rapid and customizable manufacturing solutions.

show abstract

Preparation, Characterization, and swelling study of N,N’-dimethylacrylamide/acrylic acid amphiphilic hydrogels in different conditions

Cited by 15 publications

References 29 publications

Anionic starch-based hybrid cryogel-embedded ZnO nanoparticles: tuning the elasticity and pH-functionality of biocomposites with dicarboxylic acid units

Anionic starch-based hybrid cryogel-embedded ZnO nanoparticles: tuning the elasticity and pH-functionality of biocomposites with dicarboxylic acid units

Preparation, assessment, and swelling study of amphiphilic acrylic acid/chitosan-based semi-interpenetrating hydrogels

Ultrasmall Sulfur‐Dots‐Mediated Facile Photopolymerization for the Production of Smart Injectable Ink for 3D Printing Applications

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