scholarly journals Elastase-triggered H2S delivery from polymer hydrogels

2020 ◽  
Vol 56 (7) ◽  
pp. 1085-1088 ◽  
Author(s):  
Mingjun Zhou ◽  
Yun Qian ◽  
Yumeng Zhu ◽  
John Matson
Keyword(s):  
Polymer Hydrogel ◽  
Polymer Hydrogels

A polymer hydrogel was prepared that underwent a gel-to-sol transition in response to the enzyme elastase, triggering release of H2S from incorporated S-aroylthiooximes.

scholarly journals Zwitterionic superabsorbent polymer hydrogels for efficient and selective removal of organic dyes

RSC Advances ◽  
2019 ◽  
Vol 9 (32) ◽  
pp. 18565-18577 ◽  
Author(s):  
Tanzil Ur Rehman ◽  
Luqman Ali Shah ◽  
Mansoor Khan ◽  
Muhammad Irfan ◽  
Noor Saeed Khattak
Keyword(s):  
Free Radical ◽  
Aqueous Medium ◽  
Radical Polymerization ◽  
Crystal Violet ◽  
Congo Red ◽  
Organic Dyes ◽  
Selective Removal ◽  
Superabsorbent Polymer ◽  
Polymer Hydrogel ◽  
Polymer Hydrogels

A novel zwitterionic superabsorbent polymer hydrogel [ZI-SAH] was synthesized by free radical polymerization and used for the removal of crystal violet (CV) and congo red (CR) from an aqueous medium.

Antibacterial superabsorbing hydrogels with high saline-swelling properties without gel blockage: Toward ideal superabsorbents for hygienic applications

2016 ◽  
Vol 32 (2) ◽  
pp. 128-145 ◽  
Author(s):  
Sina Shahi ◽  
Mohammad J Zohuriaan-Mehr ◽  
Hossein Omidian
Keyword(s):  
Antibacterial Activity ◽  
Cetyltrimethylammonium Bromide ◽  
Particle Surface ◽  
Solvent Mixture ◽  
Sodium Acrylate ◽  
Scale Production ◽  
Superabsorbent Polymer ◽  
Swelling Properties ◽  
Polymer Hydrogel ◽  
Polymer Hydrogels

Superabsorbent polymer hydrogels with antibacterial activity were prepared by an ion exchange reaction as a feasible approach to induce high saline absorption without gel blockage. Hydroethanolic solutions of cetyltrimethylammonium bromide were used to modify surface particles of cross-linked sodium acrylate- co-acrylic acid copolymers which already synthesized under defined conditions. Fourier transform infrared spectroscopy was employed to study the structural characteristic of the finished products. The influence of cetyltrimethylammonium bromide on free (in water) and loaded (in saline) swelling capacity as well as antibacterial activity of superabsorbent polymer hydrogels against Staphylococcus aureus was investigated. Modified samples displayed an improved free and loaded swelling in water and saline, as well as no gel-blocking. These improvements were found to be affected by the reaction time, cetyltrimethylammonium bromide concentration, and water percentage in the solvent mixture. The results from energy dispersive X-ray analysis showed that cetyltrimethylammonium bromide was distributed uniformly in the superabsorbent polymer hydrogel particle surface. Moreover, the modified superabsorbent polymer hydrogels showed high antibacterial activity against S. aureus. Both bacteriostatic and bactericide effects were observed depending on the reaction conditions. Overall, several improvements were concurrently achieved via a single cost-effective post-treatment on the superabsorbent polymer hydrogel particles. Therefore, the results can effectively be used in designing larger scale production of antibacterial superabsorbent polymer hydrogels with desirable swelling properties in hygiene applications.

Flexible solid-state supercapacitors based on a conducting polymer hydrogel with enhanced electrochemical performance

2014 ◽  
Vol 2 (46) ◽  
pp. 19726-19732 ◽  
Author(s):  
Kai Wang ◽  
Xiong Zhang ◽  
Chen Li ◽  
Haitao Zhang ◽  
Xianzhong Sun ◽  
...  
Keyword(s):  
Solid State ◽  
Electrochemical Performance ◽  
Conducting Polymer ◽  
High Performance ◽  
Electrode Materials ◽  
Solid Materials ◽  
Polymer Hydrogel ◽  
Polymer Hydrogels ◽  
Enhanced Electrochemical Performance

Conducting polymer hydrogels instead of traditional solid materials are used as the electrode materials to prepare high-performance flexible solid-state supercapacitors.

Conducting Polymer Hydrogels: A Single Component Conducting Polymer Hydrogel as a Scaffold for Tissue Engineering (Adv. Funct. Mater. 13/2012)

2012 ◽  
Vol 22 (13) ◽  
pp. 2691-2691 ◽  
Author(s):  
Damia Mawad ◽  
Elise Stewart ◽  
David L. Officer ◽  
Tony Romeo ◽  
Pawel Wagner ◽  
...  
Keyword(s):  
Tissue Engineering ◽  
Conducting Polymer ◽  
Single Component ◽  
Polymer Hydrogel ◽  
Polymer Hydrogels

NIR-responsive metal-containing polymer hydrogel for light-controlled microvalve

2021 ◽  
Author(s):  
Xusheng Lin ◽  
Weiwei Xie ◽  
Qin Lin ◽  
Yuanting Cai ◽  
Yuhui Hua ◽  
...  
Keyword(s):  
Polymer Hydrogel ◽  
Polymer Hydrogels ◽  
Metal Containing Polymers

Metal-containing polymers have drawn considerable interest because of their unexpected and fantastic properties, which can be applied for preparing functional hydrogels. However, covalently cross-linked metal-containing polymer hydrogels have been rarely...

Recent advances in conductive polymer hydrogel composites and nanocomposites for flexible electrochemical supercapacitors

2021 ◽  
Author(s):  
Le Li ◽  
Jian Meng ◽  
Mingtong Zhang ◽  
Tianxi Liu ◽  
Chao Zhang
Keyword(s):  
Energy Storage ◽  
Conductive Polymer ◽  
High Conductivity ◽  
Electrochemical Supercapacitors ◽  
Next Generation ◽  
Energy Storage Devices ◽  
Polymer Hydrogel ◽  
Storage Devices ◽  
Polymer Hydrogels ◽  
Hydrogel Composites

Flexible electrochemical supercapacitors have shown great potentials in the next-generation wearable and implantable energy-storage devices. Conductive polymer hydrogels usually possess unique porosity, high conductivity, and broadly tunable properties through molecular...

Design and fabrication of conductive polymer hydrogels and their applications in flexible supercapacitors

2020 ◽  
Vol 8 (44) ◽  
pp. 23059-23095 ◽  
Author(s):  
Xinting Han ◽  
Guangchun Xiao ◽  
Yuchen Wang ◽  
Xiaona Chen ◽  
Gaigai Duan ◽  
...  
Keyword(s):  
Conductive Polymer ◽  
Polymer Hydrogels ◽  
Conductive Materials ◽  
Flexible Supercapacitors

Conductive polymer hydrogels, which combine the advantages of both polymers and conductive materials, have huge potential in flexible supercapacitors.

scholarly journals Novel Self-Healing Metallocopolymers with Pendent 4-Phenyl-2,2′:6′,2″-terpyridine Ligand: Kinetic Studies and Mechanical Properties

Polymers ◽  
2021 ◽  
Vol 13 (11) ◽  
pp. 1760
Author(s):  
Rose K. Baimuratova ◽  
Gulzhian I. Dzhardimalieva ◽  
Evgeniy V. Vaganov ◽  
Valentina A. Lesnichaya ◽  
Gulsara D. Kugabaeva ◽  
...  
Keyword(s):  
Critical Role ◽  
Specific Effect ◽  
Kinetic Studies ◽  
Radical Copolymerization ◽  
Self Healing ◽  
Free Radical Copolymerization ◽  
Polymer Hydrogels ◽  
Close Proximity ◽  
Metal Group ◽  
Metal Polymer

We report here our successful attempt to obtain self-healing supramolecular hydrogels with new metal-containing monomers (MCMs) with pendent 4-phenyl-2,2′:6′,2″-terpyridine metal complexes as reversible moieties by free radical copolymerization of MCMs with vinyl monomers, such as acrylic acid and acrylamide. The resulting metal-polymer hydrogels demonstrate a developed system of hydrogen, coordination and electron-complementary π–π stacking interactions, which play a critical role in achieving self-healing. Kinetic data show that the addition of a third metal-containing comonomer to the system decreases the initial polymerization rate, which is due to the specific effect of the metal group located in close proximity of the active center on the growth of radicals.

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