Article
Materials Science, Multidisciplinary
Ping Zhang, Ziyi Xu, Zhiying Wu, Ping Xu, Canhui Yang
Summary: This study presents a method to enhance the mechanical properties of poly(2-hydroxyethyl methacrylate) hydrogels by incorporating biochar nanoparticles and hydrophobic aggregations. The resulting hydrogels exhibit superior mechanical properties and potential applications in various fields.
INTERNATIONAL JOURNAL OF SMART AND NANO MATERIALS
(2022)
Article
Polymer Science
Naiku Xu, Mengru Ren
Summary: The composite fiber prepared through a special process exhibits good resistance to water swelling and catalytic decolorization function, showing high stable activity towards methylene blue. This fiber demonstrates high efficiency and durability in MB decolorization, effectively reducing the total organic carbon content of MB aqueous solution.
Article
Chemistry, Applied
Houchao Jing, Jinyang Feng, Jianping Shi, Lin He, Peipei Guo, Shuang Guan, Hai Fu, Yuhui Ao
Summary: In this study, a hydrogel was developed based on non-covalent interactions, exhibiting excellent stretching ability, self-healing, and strain-sensitive conductivity for sensor applications. The hydrogel showed outstanding features such as notch-insensitivity and ability to withstand knotting under high strain.
CARBOHYDRATE POLYMERS
(2021)
Article
Materials Science, Multidisciplinary
Jiyuan Wu, Reghan J. Hill
Summary: Electroacoustic characterization of Laponite-doped neutralized poly(acrylic acid-co-acrylamide) hydrogels was studied, showing that Laponite doping increased the electroacoustic signal and ionic conductivity but decreased the hydrogel storage modulus. Theoretical models were extended to estimate some parameters of Laponite-doped hydrogels.
ACS APPLIED POLYMER MATERIALS
(2022)
Article
Materials Science, Characterization & Testing
Xiaoxue Yang, Hongyuan Cui, Ziang Wang, Wentao Wang, Hui Guo, Xiaolin Wang
Summary: Recently invented hydrophobic hydrogel is a specific type of soft matter that has purely hydrophobic networks while maintaining ultra-high water content. The formation of these hydrogels is influenced by the crosslink ratio and structure of the chemical crosslinks. The swelling behavior and kinetics of the hydrogels are significantly affected by the crosslink ratio, with a moderate ratio being necessary for their formation. The chemical structure of the crosslinks plays a less significant role in formation, but has an important impact on the swelling equilibrium states and mechanical performance of the hydrogels.
Article
Engineering, Environmental
Merve Olukman Sahin, Celile Demirbilek Bucak
Summary: Hydrophobic modified poly(AAm/C18) and poly(AAm/C18)-CMC hydrogels with high mechanical strength and shape memory properties were synthesized. The hydrogels were synthesized in one step by incorporating hydrophobic monomer units into the hydrophilic polymer network, which formed crosslinks in water. The hydrogels were characterized by various methods such as FTIR, TGA, DSC, SEM, and XRD. The results showed that the crystal regions in the hydrogel structure increased with the increase of hydrophobic monomer content. The swelling behavior of the hydrogels was in agreement with the DSC and XRD results. The shape memory properties of hydrogels containing CMC were investigated, and the new shape was fixed by complexation between CMC and metal ions (M2+ and M3+ valence).
JOURNAL OF POLYMERS AND THE ENVIRONMENT
(2023)
Article
Chemistry, Physical
Siqi Wang, Xiaoyu Guo, Peipei Guo, Shuang Guan, Hai Fu, Wei Cui, Yuhui Ao
Summary: In this study, hydrogels with controllable mechanical properties were successfully prepared by immersing them into LiCl, NaCl, and KCl aqueous solution. The salts not only formed coordination interactions with the carboxyl group of acrylic acid, but also promoted the formation of hydrophobic associations, significantly improving the mechanical properties of the gel. The KCl treated hydrogels showed higher tensile strength and fracture energy, and also exhibited pressure sensitive conductivity for detecting body movements.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Polymer Science
Demet Kaya Aktas, Filiz Oztekin
Summary: Ionic hydrogels are suitable for drug delivery applications, and in this study, pH-sensitive P(AAc-co-AAm) hydrogels were investigated for swelling properties using a hydrophilic fluorescence probe, 4sPy. The fluorescence intensity of 4sPy was monitored during swelling processes at different pH values, showing similar behavior to trapped drug carriers. These hydrogels could be useful for targeted drug delivery systems in the jejunum, with potential for 4sPy as a monitoring probe for drug carriers.
Article
Chemistry, Multidisciplinary
Mengmeng Zhou, Yutong Bi, Haijun Zhou, Xiaoqi Chen, Fen Zhang, Yantao Li, Xiongwei Qu
Summary: The aggregation behavior between P(AA-co-OMA) and BSA was studied, revealing optimal composite conditions and a reliance on hydrophobic interactions.
Article
Engineering, Biomedical
Mitchell Ross, Emily Anne Hicks, Talena Rambarran, Heather Sheardown
Summary: This study develops chitosan crosslinked poly(N-isopropylacrylamide) thermo-gels as alternatives to conventional eye drops for sustained release of ketotifen fumarate in the treatment of allergic conjunctivitis. The thermo-gelling properties of the polymer are altered to enable the incorporation of chitosan, and the synthesized materials show controlled drug release and non-toxicity both in vitro and in vivo.
ACTA BIOMATERIALIA
(2022)
Article
Chemistry, Physical
Tamara Erceg, Tamara Dapcevic-Hadnadev, Miroslav Hadnadev, Ivan Ristic
Summary: In this study, poly(acrylamide-co-acrylic acid) hydrogels were synthesized using a one-step microwave method, which showed irregular cellular and porous structures. Swelling behavior of the hydrogels varied at different pH values and temperatures, indicating potential applications in fields such as drug delivery and tissue engineering. The rheological assessment of the hydrogels revealed a dominant elastic character and a three-dimensional internal structure.
COLLOID AND POLYMER SCIENCE
(2021)
Article
Materials Science, Multidisciplinary
Devaraju Subramani, Aruna Kumar Mohanty, Du-hyun Won, Hyun-jong Paik
Summary: A simple in situ sol-gel hybrid approach was used to enhance the mechanical stability and hydrophobic property of poly(3,4-ethylenedioxythiophene) (PEDOT) transparent conductive films (TCFs). PEDOT:P(SS-co-AMA)/silica hybrid films were prepared using thiol-ene click and sol-gel reactions with silane precursors. The hybrid films demonstrated improved hydrophobicity and mechanical stability due to the cross-linked silica network, perfluorooctyl moiety, and good compatibility between organic and inorganic phases. These PEDOT-silica hybrid films with excellent transparency, electrical conductivity, and hydrophobic and mechanical properties are suitable for durable optoelectronic device applications.
ACS APPLIED POLYMER MATERIALS
(2023)
Article
Polymer Science
Fabio Bignotti, Francesco Baldi, Mario Grassi, Michela Abrami, Gloria Spagnoli
Summary: This work presents a novel method to synthesize hydrophobically-modified hydrogels, which exhibit thermosensitive behavior and enhanced properties when the HLB decreases, especially when wp exceeds 10%. The decrease in HLB results in an increase in polymer weight content and improvement in mechanical properties due to the occurrence of physical crosslinking.
Article
Chemistry, Applied
Yucheng Song, Hui Li, Tianhang Shan, Peipei Yang, Songwei Li, Zhong Liu, Chuntai Liu, Changyu Shen
Summary: A composite hydrogel with excellent properties, including low swelling ratio, mechanical strength, and uranium adsorption capacity, was developed by incorporating a metal-organic framework with a poly(acrylamide-co-acrylic acid)/chitosan composite.
CARBOHYDRATE POLYMERS
(2023)
Article
Polymer Science
Muhammad Suhail, Chih-Wun Fang, I-Hui Chiu, Ming-Chia Hung, Quoc Lam Vu, I-Ling Lin, Pao-Chu Wu
Summary: The study proposed a novel aspartic acid-graft-poly(acrylic acid) hydrogel for the controlled release of acetaminophen. Through a series of experiments and tests, it was confirmed that the hydrogel exhibited high thermal stability and prolonged drug release. Additionally, the hydrogel demonstrated pH-responsive properties with excellent dynamic swelling and drug release performance.
