keyword
https://read.qxmd.com/read/38534592/advancements-in-cellulose-based-superabsorbent-hydrogels-sustainable-solutions-across-industries
#21
REVIEW
Hossein Omidian, Arnavaz Akhzarmehr, Sumana Dey Chowdhury
The development of superabsorbent hydrogels is experiencing a transformative era across industries. While traditional synthetic hydrogels have found broad utility, their non-biodegradable nature has raised environmental concerns, driving the search for eco-friendlier alternatives. Cellulose-based superabsorbents, derived from sustainable sources, are gaining prominence. Innovations include biodegradable polymer hydrogels, natural cellulose-chitosan variants, and cassava starch-based alternatives. These materials are reshaping agriculture by enhancing soil fertility and water retention, serving as potent hemostatic agents in medicine, contributing to pollution control, and providing eco-friendly construction materials...
February 29, 2024: Gels
https://read.qxmd.com/read/38534589/rheological-and-micro-rheological-properties-of-chicory-inulin-gels
#22
JOURNAL ARTICLE
Jingyuan Xu, James A Kenar
As a soluble fiber, inulin is present in many plants and has many applications in food and non-food products. In this work, we investigated the rheological properties of inulin dispersions at seven concentrations. The linear viscoelastic properties of inulin were determined using a conventional mechanical rheometer. At 25 wt%, inulin exhibited fluid-like viscoelastic liquid behavior. However, when concentrations were ≥27.5 wt%, inulin exhibited gel-like viscoelastic properties. The viscoelastic properties (moduli and viscosities) increased with increasing inulin concentration...
February 28, 2024: Gels
https://read.qxmd.com/read/38534588/sustainable-soil-additives-for-water-and-micronutrient-supply-swelling-and-chelating-properties-of-polyaspartic-acid-hydrogels-utilizing-newly-developed-crosslinkers
#23
JOURNAL ARTICLE
Youssef Hafidi, Hicham El Hatka, Dominik Schmitz, Manuel Krauss, Jürgen Pettrak, Markus Biel, Najim Ittobane
Drought and water shortage are serious problems in many arid and semi-arid regions. This problem is getting worse and even continues in temperate climatic regions due to climate change. To address this problem, the use of biodegradable hydrogels is increasingly important for the application as water-retaining additives in soil. Furthermore, efficient (micro-)nutrient supply can be provided by the use of tailored hydrogels. Biodegradable polyaspartic acid (PASP) hydrogels with different available (1,6-hexamethylene diamine (HMD) and L-lysine (LYS)) and newly developed crosslinkers based on diesters of glycine (GLY) and (di-)ethylene glycol (DEG and EG, respectively) were synthesized and characterized using Fourier transform infrared (FTIR) spectroscopy and scanning electron microscopy (SEM) and regarding their swelling properties (kinetic, absorbency under load (AUL)) as well as biodegradability of PASP hydrogel...
February 27, 2024: Gels
https://read.qxmd.com/read/38534517/multiscale-mechanical-characterization-of-polyether-2-ketone-pekk-for-biomedical-application
#24
JOURNAL ARTICLE
Gianpaolo Serino, Fabio Distefano, Elisabetta M Zanetti, Giulia Pascoletti, Gabriella Epasto
Polyether-ether-2-ketone (PEKK) is a high-performance thermoplastic polymer used in various fields, from aerospace to medical applications, due to its exceptional mechanical and thermal properties. Nonetheless, the mechanical behavior of 3D-printed PEKK still deserves to be more thoroughly investigated, especially in view of its production by 3D printing, where mechanical properties measured at different scales are likely to be correlated to one another and to all play a major role in determining biomechanical properties, which include mechanical strength on one side and osteointegration ability on the other side...
February 29, 2024: Bioengineering
https://read.qxmd.com/read/38534257/hydrogel-gated-fets-in-neuromorphic-computing-to-mimic-biological-signal-a-review
#25
REVIEW
Sankar Prasad Bag, Suyoung Lee, Jaeyoon Song, Jinsink Kim
Hydrogel-gated synaptic transistors offer unique advantages, including biocompatibility, tunable electrical properties, being biodegradable, and having an ability to mimic biological synaptic plasticity. For processing massive data with ultralow power consumption due to high parallelism and human brain-like processing abilities, synaptic transistors have been widely considered for replacing von Neumann architecture-based traditional computers due to the parting of memory and control units. The crucial components mimic the complex biological signal, synaptic, and sensing systems...
March 19, 2024: Biosensors
https://read.qxmd.com/read/38534227/flow-through-amperometric-biosensor-system-based-on-functionalized-aryl-derivative-of-phenothiazine-and-pamam-calix-dendrimers-for-the-determination-of-uric-acid
#26
JOURNAL ARTICLE
Dmitry Stoikov, Alexey Ivanov, Insiya Shafigullina, Milena Gavrikova, Pavel Padnya, Igor Shiabiev, Ivan Stoikov, Gennady Evtugyn
A flow-through biosensor system for the determination of uric acid was developed on the platform of flow-through electrochemical cell manufactured by 3D printing from poly(lactic acid) and equipped with a modified screen-printed graphite electrode (SPE). Uricase was immobilized to the inner surface of a replaceable reactor chamber. Its working volume was reduced to 10 μL against a previously reported similar cell. SPE was modified independently of the enzyme reactor with carbon black, pillar[5]arene, poly(amidoamine) dendrimers based on the p-tert -butylthiacalix[4]arene (PAMAM-calix-dendrimers) platform and electropolymerized 3,7-bis(4-aminophenylamino) phenothiazin-5-ium chloride...
February 23, 2024: Biosensors
https://read.qxmd.com/read/38534224/bimetallic-coordination-polymers-synthesis-and-applications-in-biosensing-and-biomedicine
#27
REVIEW
Yanping Sun, Jianxin Ma, Faisal Ahmad, Yelan Xiao, Jingyang Guan, Tong Shu, Xueji Zhang
Bimetallic coordination polymers (CPs) have two different metal ions as connecting nodes in their polymer structure. The synthesis methods of bimetallic CPs are mainly categorized into the one-pot method and post-synthesis modifications according to various needs. Compared with monometallic CPs, bimetallic CPs have synergistic effects and excellent properties, such as higher gas adsorption rate, more efficient catalytic properties, stronger luminescent properties, and more stable loading platforms, which have been widely applied in the fields of gas adsorption, catalysis, energy storage as well as conversion, and biosensing...
February 22, 2024: Biosensors
https://read.qxmd.com/read/38534124/machine-guided-discovery-of-acrylate-photopolymer-compositions
#28
JOURNAL ARTICLE
Ayush Jain, Connor D Armstrong, V Roshan Joseph, Rampi Ramprasad, H Jerry Qi
Additive manufacturing (AM) can be advanced by the diverse characteristics offered by thermoplastic and thermoset polymers and the further benefits of copolymerization. However, the availability of suitable polymeric materials for AM is limited and may not always be ideal for specific applications. Additionally, the extensive number of potential monomers and their combinations make experimental determination of resin compositions extremely time-consuming and costly. To overcome these challenges, we develop an active learning (AL) approach to effectively choose compositions in a ternary monomer space ranging from rigid to elastomeric...
March 27, 2024: ACS Applied Materials & Interfaces
https://read.qxmd.com/read/38534071/study-of-hydration-repulsion-of-zwitterionic-polymer-brushes-resistant-to-protein-adhesion-through-molecular-simulations
#29
JOURNAL ARTICLE
Xinzhong Song, Jia Man, Yinghua Qiu, Jiali Wang, Ruijian Li, Yongqi Zhang, Guanghui Cui, Jianyong Li, Jianfeng Li, Yuguo Chen
The fabrication of antifouling zwitterionic polymer brushes represents a leading approach to mitigate nonspecific adhesion on the surfaces of medical devices. This investigation seeks to elucidate the correlation between the material composition and structural attributes of these polymer brushes in preventing protein adhesion. To achieve this goal, we modeled three different zwitterionic brushes, namely, carboxybetaine methacrylate (CBMA), sulfobetaine methacrylate (SBMA), and (2-(methacryloyloxy)ethyl)-phosphorylcholine (MPC)...
March 27, 2024: ACS Applied Materials & Interfaces
https://read.qxmd.com/read/38533998/introduction-of-a-conductive-layer-into-flood-resistant-gas-diffusion-electrodes-with-polymer-substrate-for-an-efficient-electrochemical-co-2-reduction-with-copper-oxide
#30
JOURNAL ARTICLE
Shingi Yamaguchi, Hiroji Ebe, Tsutomu Minegishi, Masakazu Sugiyama
Conversion of atmospheric carbon dioxide (CO2 ) into valuable feedstocks is a crucial technology, and electrochemical reduction of CO2 is a promising approach that can provide a useful source of ethylene (C2 H4 ). Gas diffusion electrodes (GDEs) placed at the interface of the CO2 gas and electrolyte can achieve high current density through a sufficient supply of dissolved CO2 to the reaction site, making them indispensable in industrial applications. However, conventional GDEs with carbon substrate have suffered from electrolyte flooding and consequent loss of efficiency, posing an obstacle for practical application...
March 27, 2024: ACS Applied Materials & Interfaces
https://read.qxmd.com/read/38533691/an-overview-and-future-perspectives-of-rechargeable-flexible-zn-air-batteries
#31
JOURNAL ARTICLE
Linming Bai, Dan Wang, Wenlong Wang, Wei Yan
Environmental friendliness and low-cost zinc-air batteries for flexible rechargeable applications have great potential in the field of flexible electronics and smart wearables owing to high energy density and long service life. However, the current technology of flexible rechargeable zinc-air batteries to meet the commercialization needs still facing enormous challenges due to the poor adaptability of each flexible component of the zinc-air batteries. This review focused on the latest progress over the past 5 years in designing and fabricating flexible self-standing air electrodes, flexible electrolytes and zinc electrodes of flexible Zn-air batteries, meanwhile the basic working principle of each component of flexible rechargeable zinc-air batteries and battery structures optimization are also described...
March 27, 2024: ChemSusChem
https://read.qxmd.com/read/38533688/-in-vitro-evaluation-of-physicochemical-dependent-effects-of-polymeric-nanoparticles-on-their-cellular-uptake-and-co-localization-using-pulmonary-calu-3-cell-lines
#32
JOURNAL ARTICLE
Nashwa Osman, Paul Curley, Helen Box, Neill Liptrott, Darren Sexton, Imran Saleem
OBJECTIVE: The study evaluated physicochemical properties of eight different polymeric nanoparticles (NPs) and their interaction with lung barrier and their suitability for pulmonary drug delivery. METHODS: Eight physiochemically different NPs were fabricated from Poly lactic-co-glycolic acid (PLGA, PL) and Poly glycerol adipate-co-ω-pentadecalactone (PGA-co-PDL, PG) via emulsification-solvent evaporation. Pulmonary barrier integrity was investigated in vitro using Calu-3 under air-liquid interface...
March 27, 2024: Drug Development and Industrial Pharmacy
https://read.qxmd.com/read/38533686/immobilization-of-amino-site-into-a-pore-partitioned-metal-organic-framework-for-highly-efficient-separation-of-propyne-propylene
#33
JOURNAL ARTICLE
Yuhang Huang, Yanfei Feng, Yi Li, Kui Tan, Jie Tang, Junfeng Bai, Jingui Duan
Adsorptive separation of propyne/propylene (C3H4/C3H6) is a crucial yet complex process, however, it remains a great difficulty in developing porous materials that can meet the requirements for practical applications, particularly with an exceptional ability to bind and store trace amounts of C3H4. Functionalization of pore-partitioned metal-organic frameworks (ppMOFs) is methodically suited for this challenge owing to the possibility of dramatically increasing binding sites on highly porous and confined domains...
March 27, 2024: Angewandte Chemie
https://read.qxmd.com/read/38533623/enzymatic-synthesis-of-furan-based-copolymers-material-characterization-and-potential-for-biomedical-applications
#34
JOURNAL ARTICLE
Martyna Sokołowska, Moein Zarei, Mirosława El Fray
BACKGROUND: Today's growing demand for advanced and sustainable polyester materials is driven by an increasing awareness of the environmental impact of traditional materials, emphasizing the need for eco-friendly alternatives. Sustainability has become central in materials development, including the biomedical area, where biobased and environmentally friendly solutions are a rapidly growing field. OBJECTIVES: This research aims to comprehensively evaluate a new enzymatically catalyzed furan-based copolymer, poly(decamethylene furanoate)-co-(dilinoleic furanoate) (PDF-DLF), with a 70-30 wt% hard-to-soft segment ratio...
March 27, 2024: Polimery W Medycynie
https://read.qxmd.com/read/38533095/radiation-polymerization-for-the-preparation-of-universal-coatings-remarkable-anti-fogging-and-frost-resisting-performance
#35
JOURNAL ARTICLE
Wenrui Wang, Qi Liu, Ying Sun, Danyi Li, Siyi Xu, Lin Lin, Fangzheng Wang, Linfan Li, Jihao Li
Hydrophilic anti-fogging coatings have attracted considerable attention due to their ease of preparation and excellent fog resistance. In this study, a hydrophilic anti-fogging coating based on the random copolymer p(AA- co -SAS) was prepared using acrylic acid (AA) and sodium allylsulfonate (SAS) as monomers through radiation polymerization. The introduction of SAS successfully transformed the random copolymer from a gel state into a film-forming polymer solution. The presence of AA structural units in p(AA- co -SAS) improved the film-forming properties of the polymer solution...
March 20, 2024: RSC Advances
https://read.qxmd.com/read/38532702/development-and-characterization-of-cranberry-pomace-extract-incorporated-and-vitamin-e-fortified-edible-films-as-an-edible-separation-sheet-for-fruit-leather
#36
JOURNAL ARTICLE
Jooyeoun Jung, Caroline Christandi Loe, Yanyun Zhao
The separation sheets for fruit leather are traditionally made of plastic film or wax paper, which not only leads to environmental issues but also is inconvenience to consumers. This study evaluated edible fruit leather separation sheets using food polymers, including hydroxypropyl methyl cellulose (HPMC) and incorporation of cranberry pomace water extract (CPE) for providing natural fruit pigment, flavor, and phenolics. HPMCCPE film was then further improved by incorporating hydrophobic compound (oleic acid, OA) and vitamin E (VE) via cellulose nanocrystal (CNC) Pickering emulsion (CNCP) for enhancing film hydrophobicity and nutritional benefit, respectively...
March 27, 2024: Journal of Food Science
https://read.qxmd.com/read/38532216/microwave-pretreatment-of-wastewater-sludge-technology-a-scientometric-based-review
#37
REVIEW
Yuxuan Li, Luiza C Campos, Yukun Hu
This manuscript presents a scientometric review of recent advances in microwave pretreatment processes for sewage sludge, systematically identifying existing gaps and prospects. For this purpose, 1763 papers on the application of microwave technology to sludge pretreatment were retrieved from the Web of Science (WoS) using relevant keywords. These publications were then analyzed using diverse scientometric indices. The results show that research in this field encompasses applications based on the non-thermal effects of microwaves, enhanced effectiveness of anaerobic digestion (AD), and the energy balance of this pretreatment system...
March 27, 2024: Environmental Science and Pollution Research International
https://read.qxmd.com/read/38531529/molecularly-imprinted-polymers-for-sensing-depleting-human-serum-albumin-hsa-a-critical-review-of-recent-advances-and-current-challenges
#38
REVIEW
Ali Jahanban-Esfahlan, Ryszard Amarowicz
Human serum albumin (HSA) is an essential biomacromolecule in the blood circulatory system because it carries numerous molecules, including fatty acids (FAs), bilirubin, metal ions, hormones, and different pharmaceuticals, and plays a significant role in regulating blood osmotic pressure. Fluctuations in HSA levels in human biofluids, particularly urine and serum, are associated with several disorders, such as elevated blood pressure, diabetes mellitus (DM), liver dysfunction, and a wide range of renal diseases...
March 24, 2024: International Journal of Biological Macromolecules
https://read.qxmd.com/read/38531522/chitosan-thermogelation-and-cascade-mineralization-via-sequential-caco-3-incorporations-for-wound-care
#39
JOURNAL ARTICLE
Chengkun Liu, Menghan Li, Zhiyuan Liu, Zhuang Shi, Xiaoqiang Wang, Fang Huang
Physically crosslinked hydrogels have shown great potential as excellent and eco-friendly matrices for wound management. Herein, we demonstrate the development of a thermosensitive chitosan hydrogel system using CaCO3 as a gelling agent, followed by CaCO3 mineralization to fine-tune its properties. The chitosan hydrogel effectively gelled at 37 °C and above after an incubation period of at least 2 h, facilitated by the CaCO3 -mediated slow deprotonation of primary amine groups on chitosan polymers...
March 24, 2024: International Journal of Biological Macromolecules
https://read.qxmd.com/read/38531277/chirality-enhanced-2d-conductive-polymer-for-flexible-electronics-and-chiral-sensing-applications
#40
JOURNAL ARTICLE
Xiaoyan Li, Xiuxiu Yin, Zimo Wang, Junjie Ba, Junpeng Li, Yizhan Wang
Chiral two-dimensional (2D) conductive polymers, encompassing chiral, 2D, flexible, and conductive properties, constitute a novel class of material that remains largely unexplored. The infusion of chirality into 2D conductive polymers taps into the unique characteristics associated with chirality, presenting opportunities to enhance or tailor the electronic, optical, and structural properties of materials for specific technological applications. In this study, we synthesized a chiral 2D PEDOT:PMo11 V nanofilm through interfacial polymerization, effectively integrating a chiral monolayer, conductive polymer, and inorganic cluster...
March 21, 2024: Journal of Colloid and Interface Science
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