“Click” on SAP: Superabsorbent polymer surface modification via CuAAC reaction toward antibacterial activity and improved swollen gel strength

Moini, Nasrin; Zohuriaan‐Mehr, M. J.; Kabiri, Kourosh; Khonakdar, Hossein Ali

doi:10.1016/j.apsusc.2019.04.243

Cited by 21 publications

(8 citation statements)

References 51 publications

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“…Conventionally, PAA-based SAPs have been thermally or photochemically surface-crosslinked through the formation of an ester or amide linkages [ 16 , 24 , 25 , 26 ]. Furthermore, Moini et al [ 27 ] used click chemistry for surface modification of SAP. However, to the best of our knowledge, none of the previous studies have investigated the use of metal nanoparticles to improve the stability and permeability of SAP particles.…”

Section: Introductionmentioning

confidence: 99%

Preparation of Surface-Reinforced Superabsorbent Polymer Hydrogel Microspheres via Incorporation of In Situ Synthesized Silver Nanoparticles

Kim

Koh

2021

Polymers

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Superabsorbent polymer (SAP) particles are primarily applied for absorbing and storing liquids. Here, poly (acrylic acid) (PAA)-based SAP microspheres incorporated with silver nanoparticles (AgNPs) are prepared as an effort to maintain microsphere shape during swelling and minimize gel blocking. PAA-based SAP spheres are synthesized via inverse suspension polymerization. AgNPs are formed within SAP spheres through in situ reduction of silver nitrate (AgNO3), using polyvinylpyrrolidone as the reducing agent. The formation of AgNPs within SAP was observed via techniques such as scanning electron microscopy, ultraviolet-visible spectroscopy, thermogravimetric analysis, X-ray photoelectron spectroscopy and transmission electron microscopy. Energy dispersive spectroscopy analyses reveal that thin and dense layers of AgNPs are formed on the outer regions of the SAP spheres at higher concentrations of AgNO3. The water absorbency capacity decreases on increasing the amount of incorporated silver nanoparticles; however, it is comparable with that of commercially available surface-crosslinked SAP particles. Finally, micro-computerized tomography (micro-CT) study revealed that AgNP-incorporated SAP spheres maintained their shapes during swelling and exhibit higher void fractions in the packed gel bed, minimizing gel blocking and improving fluid permeability.

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Section: Introductionmentioning

confidence: 99%

Preparation of Surface-Reinforced Superabsorbent Polymer Hydrogel Microspheres via Incorporation of In Situ Synthesized Silver Nanoparticles

Kim

Koh

2021

Polymers

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“…IA‐based SAP, which has low gel strength, exhibits a sharp decrease in absorption under load. Moreover, low gel strength results in gel blocking between SAP particles, reducing liquid permeability 10 . One of the most effective methods for improving the gel strength of SAP is surface‐crosslinking 11,12 .…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, low gel strength results in gel blocking between SAP particles, reducing liquid permeability. 10 One of the most effective methods for improving the gel strength of SAP is surface-crosslinking. 11,12 Surface-crosslinked SAP particles have a loose internal-crosslinking structure and a dense surfacecrosslinking structure, so they can absorb a large amount of water and are resistant to external pressure at the same time.…”

Section: Introductionmentioning

confidence: 99%

Itaconic‐acid‐based superabsorbent polymer with high gel strength and biocompatibility

Kwon

Kim

et al. 2022

Polymer International

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An elaborate surface-crosslinking method was introduced to enhance the low absorbency under load (AUL) and liquid permeability of itaconic-acid-based superabsorbent polymer (SAP). The effects of the surface-crosslinking reaction parameters of the absorption properties of the SAP were investigated. An increase in the content of distilled water and 1,4-butanediol used as the surface-crosslinking solution improved the AUL and liquid permeability of the SAP, whereas an increase in the distilled water content resulted in a sharp decrease in the centrifuge retention capacity (CRC) of the SAP. Therefore, controlling the content of 1,4-butanediol is an effective strategy to improve the AUL while maintaining the CRC of the SAP to some extent. Increasing the surface-crosslinking temperature tends to decrease the CRC of the SAP. The AUL of the SAP is the highest at a reaction temperature of 160 °C. As a result, the SAP prepared under optimal surface-crosslinking conditions showed a CRC, AUL and liquid permeability of 36.0, 27.2 g g -1 and 80 s, respectively. The cell viability and cytotoxicity of the SAP on human dermal fibroblasts were confirmed using a live/dead assay and the adapted method from the ISO 10993-5 protocol. These investigations suggested that itaconic-acid-based SAPs could be potential materials for diaper products.

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“…The click chemistry provides a new idea for achieving this green goal for bronze relic protection. Due to the properties of mild reaction conditions, reaction modularization and high efficiency, copper(I)-catalyzed azide-alkyne cycloaddition (CuAAC) reaction is widely used in many fields (Moini et al, 2019;Brandhofer et al, 2019). In recent years, there has been some publications introducing the synthesis of triazole medicine via clicking reaction, but few papers reported the application of click chemistry in the preparation of assembled film (Deng et al, 2012;Meghani et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

A novel method to protect bronze in atmospheric environment: the click-assembly of triazole film

Zhou

Zhang

et al. 2020

ACMM

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Purpose The authors have prepared the triazole film on copper surface by click reaction and explored its inhibition mechanism. Design/methodology/approach The protective film is assembled by immersing bronze in solution containing p-toluenesulfonyl azide (TA) and propiolic acid (PA). Findings Fourier transform infrared spectroscopy (FT-IR) indicates that triazole (TTP) film was formed on bronze surface via click chemistry reaction between TA and PA. It shows TTP film has a good protection for bronze in the atmospheric environment simulation solution. Quantum chemical calculation (QC) and molecule dynamics simulation suggests TTP molecule adsorbs on bronze surface via N and O. Originality/value This is beneficial to develop the corrosion inhibitors for the corroded copper alloys.

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“Click” on SAP: Superabsorbent polymer surface modification via CuAAC reaction toward antibacterial activity and improved swollen gel strength

Cited by 21 publications

References 51 publications

Preparation of Surface-Reinforced Superabsorbent Polymer Hydrogel Microspheres via Incorporation of In Situ Synthesized Silver Nanoparticles

Preparation of Surface-Reinforced Superabsorbent Polymer Hydrogel Microspheres via Incorporation of In Situ Synthesized Silver Nanoparticles

Itaconic‐acid‐based superabsorbent polymer with high gel strength and biocompatibility

A novel method to protect bronze in atmospheric environment: the click-assembly of triazole film

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