Water Uptake, Thin-Film Characterization, and Gravimetric pH-Sensing of Poly(vinylphosphonate)-Based Hydrogels DOI Creative Commons
Anton S. Maier, Matjaž Finšgar, Beatrice De Chiara

et al.

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 17(1), P. 2577 - 2591

Published: Dec. 20, 2024

Herein, novel, superabsorbent, and pH-responsive hydrogels obtained by the photochemical cross-linking of hydrophilic poly(vinylphosphonates) are introduced. First, statistical copolymers diethyl vinylphosphonate (DEVP) diallyl (DAlVP) synthesized via rare earth metal-mediated group-transfer polymerization (REM-GTP) yielding similar molecular weights (Mn,NMR = 127-142 kg/mol) narrow polydispersities (Đ < 1.12). Subsequently, polymer analogous transformations P(DEVP-stat-DAlVP) introduced vinylphosphonic acid (VPA) units into polymers. In this context, partial dealkylation polymers revealed a preference for DAlVP hydrolysis, which was observed 1H NMR spectroscopy explained mechanistically. Furthermore, P(DEVP-stat-DAlVP-stat-VPA) were cross-linked under reaction conditions (λ 365 nm) thiol-ene click chemistry, superabsorbent with water uptakes up to 150 ± 27 g (H2O)/g (hydrogel). Regarding absorption, evident structure-property relationships between density, polarity, swelling behavior found. Finally, pH-responsiveness thin films these investigated. regard, thickness 39.4 2.33 nm determined profilometry spin-coated on sensors quartz crystal microbalance dissipation monitoring (QCM-D) thoroughly characterized atomic force microscopy (AFM). QCM-D measurements exposing hydrogel different aqueous media states depending pH values (1, 6, 10, 13) surrounding environment, as reflected corresponding frequency values. The exhibited fully reversible deswelling upon switching 1 13 (three cycles), sustaining harsh without erosion from gold surface thus acting gravimetric sensor discriminating two high stability surfaces anchoring networks through dithiol cross-linker confirmed detailed X-ray photoelectron (XPS) time-of-flight secondary ion mass spectrometry (ToF-SIMS) studies.

Language: Английский

A review of sodium alginate-based hydrogels: Structure, mechanisms, applications, and perspectives DOI
Hong Wang, Liang Yang, Yanning Yang

et al.

International Journal of Biological Macromolecules, Journal Year: 2024, Volume and Issue: unknown, P. 139151 - 139151

Published: Dec. 1, 2024

Language: Английский

Citations

10
Highly Absorbent Polymers-Inspired Biomass Adhesive with Enhanced Strength and Water Retention Properties DOI

Cailing Shi,

Guodong Zeng, Feng Zhu

et al.

ACS Sustainable Chemistry & Engineering, Journal Year: 2025, Volume and Issue: unknown

Published: April 16, 2025

Language: Английский

Citations

0
Highly Performing Polysaccharide Hydrogels can Replace Acrylic Acid‐Based Superabsorbent Polymers in Sanitary Napkins DOI Creative Commons

Saeed Ismaeilimoghadam,

Bahareh Azimi, Mehdi Jonoobi

et al.

Macromolecular Materials and Engineering, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 27, 2024

Abstract Super absorbent polymers (SAPs) used in sanitary napkin are not required for water absorption capacity as high baby diapers and adult incontinence pads. Sanitary napkins must absorb menses, which is delivered at a significantly lower rate overall daily amount than urines. Thus, the acrylic acid (AA) component can be strictly necessary. By proper formulation design processing, polysaccharide SAPs equally or even better performing AA‐containing napkins. Fully biodegradable sodium alginate (SA)‐based prepared through ionic cross‐linking by CaCl 2 introduced female The optimal solution concentrations (SA 8% w/v, 0.25% w/v water) reaction time identified, addition of cellulose nanocrystals (CNC) different weight contents (0–3 w%) tested. Morphology, physico‐chemical properties, rheology, free swelling (FSC), centrifuge retention capacity, loss soil assessed. Increasing CNC content decreases FSC. Rheology results demonstrate higher storage moduli SA‐based versus commercial SAPs. superior SA‐SAP developed varying amounts manufacturing prototypes, revealing that excellent menstrual fluid absorption, surpassing Replacing AA‐based with polysaccharide‐based would reduce environmental impact hygienic product waste.

Language: Английский

Citations

2
Micro–Nanofiber Three-Dimensional Antibacterial Sponge with Wetting/Pore Dual Gradient for Rapid Liquid Infiltration and Uniform Retention in Diapers DOI

Diedie Wei,

Baokang Yu,

Dandan Chen

et al.

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 17(8), P. 12565 - 12577

Published: Nov. 29, 2024

The core layer of disposable diapers typically contains a blend superabsorbent polymer (SAP) and pulp, resulting in slow liquid absorption, separation, reverse osmosis, potential skin issues owing to the addition antibacterial agents surface layer. Therefore, with rapid uniform retention, properties must be developed improve wearer comfort. In this study, three-dimensional network porous structure for diaper was prepared by solution blow spinning (SBS). This comprised fiber (SAF) hydrolyzed polyacrylonitrile (HPAN) micro/nanofibers dual gradient wetting/pore size. Progressively increasing SAF content each incrementally increase wettability controlling diameter, pore sizes approximately 30 μm-16 μm-7 μm formed. design exhibited infiltration capability, reducing third time 13 s compared those commercial layers while osmosis 1.4 g, absorption retention rates are 47.7 times 46.1 times, respectively, which is 1.6 higher than diapers. addition, incorporating natural agent, ε-poly-l-lysine hydrochloride (ε-PLH), into resulted an rate exceeding 99.99% without direct contact skin; water transport capacity tests confirmed faster speed, no fault formation.

Language: Английский

Citations

1
Sodium alginate modified metal oxide nanoparticles as a desirable nanofiller for polyethersulfone membranes: Application in diclofenac removal from water DOI
Parisa Daraei, Elham Rostami,

Farzad Nasirmanesh

et al.

International Journal of Biological Macromolecules, Journal Year: 2024, Volume and Issue: unknown, P. 137974 - 137974

Published: Nov. 1, 2024

Language: Английский

Citations

0
Water Uptake, Thin-Film Characterization, and Gravimetric pH-Sensing of Poly(vinylphosphonate)-Based Hydrogels DOI Creative Commons
Anton S. Maier, Matjaž Finšgar, Beatrice De Chiara

et al.

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 17(1), P. 2577 - 2591

Published: Dec. 20, 2024

Herein, novel, superabsorbent, and pH-responsive hydrogels obtained by the photochemical cross-linking of hydrophilic poly(vinylphosphonates) are introduced. First, statistical copolymers diethyl vinylphosphonate (DEVP) diallyl (DAlVP) synthesized via rare earth metal-mediated group-transfer polymerization (REM-GTP) yielding similar molecular weights (Mn,NMR = 127-142 kg/mol) narrow polydispersities (Đ < 1.12). Subsequently, polymer analogous transformations P(DEVP-stat-DAlVP) introduced vinylphosphonic acid (VPA) units into polymers. In this context, partial dealkylation polymers revealed a preference for DAlVP hydrolysis, which was observed 1H NMR spectroscopy explained mechanistically. Furthermore, P(DEVP-stat-DAlVP-stat-VPA) were cross-linked under reaction conditions (λ 365 nm) thiol-ene click chemistry, superabsorbent with water uptakes up to 150 ± 27 g (H2O)/g (hydrogel). Regarding absorption, evident structure-property relationships between density, polarity, swelling behavior found. Finally, pH-responsiveness thin films these investigated. regard, thickness 39.4 2.33 nm determined profilometry spin-coated on sensors quartz crystal microbalance dissipation monitoring (QCM-D) thoroughly characterized atomic force microscopy (AFM). QCM-D measurements exposing hydrogel different aqueous media states depending pH values (1, 6, 10, 13) surrounding environment, as reflected corresponding frequency values. The exhibited fully reversible deswelling upon switching 1 13 (three cycles), sustaining harsh without erosion from gold surface thus acting gravimetric sensor discriminating two high stability surfaces anchoring networks through dithiol cross-linker confirmed detailed X-ray photoelectron (XPS) time-of-flight secondary ion mass spectrometry (ToF-SIMS) studies.

Language: Английский

Citations

0