keyword
https://read.qxmd.com/read/38546002/robust-superhydrophobic-composite-fabric-with-self-healing-and-chemical-durability
#1
JOURNAL ARTICLE
Jing Tao, Yuanfa Liu, Minghan Li, Zheng Li, Yihang Zhang, Xuecui Song, Qiang Yang, Fucheng Guan, Jing Guo
Superhydrophobic fabrics with multiple functions have become a research hotspot. However, it is challenging to make self-healing mechanically robust and eco-friendly superhydrophobic fabrics, which are limited by complex fabrication processes and excessive use of environmentally unfriendly solvents during fabrication. Herein, inspired by the secretion of a waxy substance from the surface of lotus leaves to restore water repellency, self-healing superhydrophobic composite fabrics (as-synthesized PA66/6-PET@Tico) are obtained by constructing a papillary TiO2 and tentacle-like fluorinated acrylate polymer (FCB015) coating on polyester-nylon composite fabrics using two-step hydrothermal method...
March 28, 2024: Small
https://read.qxmd.com/read/38545629/mxene-silk-fibroin-strengthened-pva-based-eutectogel-with-excellent-self-healing-ability-and-environmental-adaptability-design-synthesis-and-sensing-application
#2
JOURNAL ARTICLE
Hanlin Zhai, Chen Yue, Zhangpeng Li, Limin Ma, Tingting Wang, Hong Zhang, Jinqing Wang, Shengrong Yang
In order to solve typical problems of instability in a variety of environments, lack of self-healing ability and poor mechanical properties of traditional hydrogel materials, herein, a superelastic self-healing eutectogel of DPMS was designed and prepared in a deep eutectic solvent (DES) system using poly(vinyl alcohol) (PVA) as the bulk skeleton material, while two-dimensional MXene (Ti3C2TX) nanosheets and silk fibroin (SF) as reinforcing fillers. As a result, the prepared DPMS eutectogel possesses a high tensile strength of 7...
March 28, 2024: Chemistry, An Asian Journal
https://read.qxmd.com/read/38543238/the-formulation-and-characterization-of-wound-dressing-releasing-s-nitrosoglutathione-from-polyvinyl-alcohol-borax-reinforced-carboxymethyl-chitosan-self-healing-hydrogel
#3
JOURNAL ARTICLE
Juliana Palungan, Widya Luthfiyah, Apon Zaenal Mustopa, Maritsa Nurfatwa, Latifah Rahman, Risfah Yulianty, Nasrul Wathoni, Jin-Wook Yoo, Nurhasni Hasan
Self-healing hydrogels often lack mechanical properties, limiting their wound-dressing applications. This study introduced S-Nitrosoglutathione (GSNO) to self-healing hydrogel-based wound dressings. Self-healing hydrogel mechanical properties were improved via polymer blends. Applying this hydrogel to the wound site allows it to self-heal and reattach after mechanical damage. This work evaluated polyvinyl alcohol (PVA)-based self-healing hydrogels with borax as a crosslinking agent and carboxymethyl chitosan as a mechanical property enhancer...
February 29, 2024: Pharmaceutics
https://read.qxmd.com/read/38542903/recent-advances-in-polymer-nanocomposites-unveiling-the-frontier-of-shape-memory-and-self-healing-properties-a-comprehensive-review
#4
REVIEW
Huma Jamil, Muhammad Faizan, Muhammad Adeel, Teofil Jesionowski, Grzegorz Boczkaj, Aldona Balčiūnaitė
Shape memory and self-healing polymer nanocomposites have attracted considerable attention due to their modifiable properties and promising applications. The incorporation of nanomaterials (polypyrrole, carboxyl methyl cellulose, carbon nanotubes, titania nanotubes, graphene, graphene oxide, mesoporous silica) into these polymers has significantly enhanced their performance, opening up new avenues for diverse applications. The self-healing capability in polymer nanocomposites depends on several factors, including heat, quadruple hydrogen bonding, π-π stacking, Diels-Alder reactions, and metal-ligand coordination, which collectively govern the interactions within the composite materials...
March 13, 2024: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://read.qxmd.com/read/38542623/delamination-of-plasticized-devices-in-dynamic-service-environments
#5
REVIEW
Wenchao Tian, Xuyang Chen, Guoguang Zhang, Yuanming Chen, Jijun Luo
With the continuous development of advanced packaging technology in heterogeneous semiconductor integration, the delamination failure problem in a dynamic service environment has gradually become a key factor limiting the reliability of packaging devices. In this paper, the delamination failure mechanism of polymer-based packaging devices is clarified by summarizing the relevant literature and the latest research solutions are proposed. The results show that, at the microscopic scale, thermal stress and moisture damage are still the two main mechanisms of two-phase interface failure of encapsulation devices...
March 11, 2024: Micromachines
https://read.qxmd.com/read/38541495/impact-of-tribological-conditions-on-collagen-coating-self-healing
#6
JOURNAL ARTICLE
Sung-Jun Lee, Chang-Lae Kim
The study examined the correlation between collagen coating damage and self-healing under various tribological conditions. It confirmed that the friction coefficient and degree of damage on the collagen coating varied based on contact and sliding conditions. The friction coefficient, measured at 0.56 for a single sliding cycle under a 350 mN normal load, demonstrated a notable decrease to 0.46 for 2295 cycles under 30 mN, further reducing to 0.15 for 90 cycles under a 20 mN normal load. As the normal load increased, the friction coefficient decreased, and with repeated sliding cycles under the same load, the coefficient also decreased...
March 14, 2024: Materials
https://read.qxmd.com/read/38541434/corrosion-behavior-of-10-ppi-tad-3d-5a05al-composite-in-a-chloride-environment
#7
JOURNAL ARTICLE
Zishen Li, Shengpu Wang, Yuxin Chen, Gaofeng Fu, Lan Jiang
This study utilizes desalted and denitrated treated aluminum dross (TAD) as a raw material, along with kaolin and 10 ppi (pores per inch) polyurethane foam as a template. The slurry is converted into an aluminum dross green body with a three-dimensional network structure using the impregnation method. A three-dimensional network aluminum dross ceramic framework (TAD3D ) is created at a sintering temperature of 1350 °C. The liquid 5A05 aluminum alloy at a temperature of 950 °C infiltrates into the voids of TAD3D through pressureless infiltration, resulting in TAD3D /5A05Al composite material with an interpenetrating phase composite (IPC) structure...
March 10, 2024: Materials
https://read.qxmd.com/read/38541429/facile-synthesis-of-dual-network-polymer-hydrogels-with-anti-freezing-highly-conductive-and-self-healing-properties
#8
JOURNAL ARTICLE
Yuchen Jin, Lizhu Zhao, Ya Jiang, Xiaoyuan Zhang, Zhiqiang Su
We report the synthesis of poly(acrylamide-co-acrylic acid)/sodium carboxy methyl cellulose (PAMAA/CMC-Na) hydrogels, and subsequent fabrication of dual-network polymer hydrogels (PAMAA/CMC-Na/Fe) using as-prepared via the salt solution (FeCl3 ) immersion method. The created dual-network polymer hydrogels exhibit anti-swelling properties, frost resistance, high conductivity, and good mechanical performance. The hydrogel swells sightly when immersed in solution (pH = 2~11). With the increase in nAA :nAM , the modulus of elasticity experiences a rise from 1...
March 10, 2024: Materials
https://read.qxmd.com/read/38541287/cultural-attunements-and-ecological-wellbeing-embodied-conditions-for-mental-health-interventions
#9
JOURNAL ARTICLE
Kara Miller
A critical need for mental health interventions is clear in the modern era. Bodily attunements to place and space can help cultivate belongingness and heal the anxious modern body, as well as facilitate community solidarity to combat the loneliness and isolation that many are experiencing. Human systems and services have the potential to facilitate meaningful experiences for community members and to incite joyful, thoughtful, or motivating multisensory interactions. Humans' surroundings have paramount effects on inhabitants and should offer opportunity and inspiration...
February 29, 2024: International Journal of Environmental Research and Public Health
https://read.qxmd.com/read/38541097/multiple-keratoacanthoma-like-syndromes-case-report-and-literature-review
#10
REVIEW
Emmanouil Karampinis, Christina Kostopoulou, Olga Toli, Leonidas Marinos, George Papadimitriou, Angeliki Victoria Roussaki Schulze, Efterpi Zafiriou
Keratoacanthoma (KA) is a fast-growing skin tumor subtype that can be observed as a solitary lesion or rarely as multiple lesions in the context of rare genetic syndromes. Syndromes with multiple keratoacanthoma-like lesions have been documented as multiple self-healing squamous epithelioma (Ferguson-Smith syndrome), eruptive keratoacanthoma of Grzybowski, multiple familial keratoacanthoma of Witten and Zak Muir-Torre syndrome, and incontinentia pigmenti. The treatment approach of those entities is challenging due to the numerous lesions, the lesions' undefined nature, and the co-existence of other malignant skin tumors...
February 22, 2024: Medicina
https://read.qxmd.com/read/38534605/three-dimensional-printing-of-hydrogels-for-flexible-sensors-a-review
#11
REVIEW
Suhail Ayoub Khan, Hamza Ahmad, Guoyin Zhu, Huan Pang, Yizhou Zhang
The remarkable flexibility and heightened sensitivity of flexible sensors have drawn significant attention, setting them apart from traditional sensor technology. Within this domain, hydrogels-3D crosslinked networks of hydrophilic polymers-emerge as a leading material for the new generation of flexible sensors, thanks to their unique material properties. These include structural versatility, which imparts traits like adhesiveness and self-healing capabilities. Traditional templating-based methods fall short of tailor-made applications in crafting flexible sensors...
March 8, 2024: Gels
https://read.qxmd.com/read/38533630/strongly-adhesive-self-healing-hemostatic-hydrogel-for-the-repair-of-traumatic-brain-injury
#12
JOURNAL ARTICLE
Zuoxiang Dong, Jihu Zhao, Jian Xu, Wenshuai Deng, Peng Sun
With wide clinical demands, therapies for traumatic brain injury (TBI) are a major problem in surgical procedures and after major trauma. Due to the difficulty in regeneration of neurons or axons after injury, as well as the inhibition of blood vessel growth by the formation of neural scars, existing treatment measures have limited effectiveness in repairing brain tissue. Herein, the biomultifunctional hydrogels are developed for TBI treatment based on the Schiff base reaction of calcium ion (Ca2+ )-cross-linked oxidized sodium alginate (OSA) and carboxymethyl chitosan (CMCS)...
March 27, 2024: Biomacromolecules
https://read.qxmd.com/read/38532867/osteochondritis-dissecans-of-the-hip-in-legg-calv%C3%A3-perthes-disease-case-report-and-review
#13
Luiz Renato Agrizzi de Angeli, Bárbara Lívia Corrêa Serafim, Felippi Guizardi Cordeiro, Felipe Spinelli Bessa, Daniel Augusto Carvalho Maranho
INTRODUCTION: Legg-Calvé-Perthes disease (LCPD) is the idiopathic osteonecrosis of the capital femoral epiphysis in children. It is a self-healing condition, and the morphology of the hip may vary according to the severity of the disease, among several other factors. The treatment focuses on attempts to prevent femoral head collapse, obtain functional hip motion recovery, and reduce pain. Osteochondritis Dissecans (OCD) of the femoral head has been reported in 2% to 7% of patients diagnosed with healed LCPD...
2024: Acta Ortopedica Brasileira
https://read.qxmd.com/read/38532843/novel-design-and-development-of-centella-asiatica-extract-loaded-poloxamer-zno-nanocomposite-wound-closure-material-to-improve-anti-bacterial-action-and-enhanced-wound-healing-efficacy-in-diabetic-foot-ulcer
#14
JOURNAL ARTICLE
Lina Wang, Yan Yang, Weiwei Han, Hui Ding
Diabetic wounds can occur as a prevalent complication among people diagnosed with diabetes, frequently resulting in the necessity for amputation. The cause and effect of diabetic foot ulcer is complex, involving multiple factors. In the present study, wound healing strategies utilizing nanomaterials have proven to be effective in battling bacterial infections and improve wound regeneration. Poloxamers (PLX) exhibit extensive potential as a viable option for the development of nanomedicines owing to their inherent characteristics of self-assembly and encapsulation...
December 2024: Regenerative Therapy
https://read.qxmd.com/read/38531275/interfacial-self-healing-polymer-electrolytes-for-long-cycle-silicon-anodes-in-high-performance-solid-state-lithium-batteries
#15
JOURNAL ARTICLE
Shenggong He, Shimin Huang, Xinzhou Liu, Xianggang Zeng, Hedong Chen, Lingzhi Zhao, Hadia Noor, Xianhua Hou
For all-solid-state lithium-ion batteries (ASSLIBs), silicon (Si) stands out as an appealing anodes material due to its high energy density and improved safety compared to lithium metal. However, the substantial volume changes during cycling result in poor solid-state physical contact and electrolyte-electrode interface issues, leading to unsatisfactory electrochemical performance. In this study, we employed in-situ polymerization to construct an integrated Si anodes/self-healing polymer electrolyte for ASSLIBs...
March 18, 2024: Journal of Colloid and Interface Science
https://read.qxmd.com/read/38531257/antibacterial-and-self-healing-sepiolite-based-hybrid-hydrogel-for-hemostasis-and-wound-healing
#16
JOURNAL ARTICLE
Yizhi Jiang, Li Wang, Wangdan Qi, Peisheng Yin, Xiang Liao, Yuze Luo, Yanhuai Ding
The process of wound healing necessitates a specific environment, thus prompting extensive research into the utilization of hydrogels for this purpose. While numerous hydrogel structures have been investigated, the discovery of a self-healing hydrogel possessing favorable biocompatibility, exceptional mechanical properties, and effective hemostatic and antibacterial performance remains uncommon. In this work, a polyvinyl alcohol (PVA) hybrid hydrogel was meticulously designed through a simple reaction, wherein Cux O anchored sepiolite was incorporated into the hydrogel...
March 23, 2024: Biomater Adv
https://read.qxmd.com/read/38530062/mechanically-robust-durable-and-multifunctional-hyper-crosslinked-elastomer-based-on-metal-organic-cluster-crosslinker-the-role-of-topological-structure
#17
JOURNAL ARTICLE
Qi-Sheng Huang, Yan Ma, Yan-Long Luo, Dong-Ping Li, Cheng-Hui Li, Yong-Xiu Li, Jing-Lin Zuo
Polymer materials formed by conventional metal-ligand bonds have very low branch functionality, the crosslinker of such polymer usually consists of 2-4 polymer chains and a single metal ion. Thus, these materials are weak, soft, humidity-sensitive, and unable to withstand their shape under long-term service. In this work, a new hyperbranched metal-organic cluster (MOC) crosslinker containing up to 16 vinyl groups is prepared by a straightforward coordination reaction. Compared with the current typical synthesis of metal-organic cages (MOCs) or metal-organic-polyhedra (MOP) crosslinkers with complex operations and low yield, the preparation of the MOC is simple and gram-scale...
March 26, 2024: Small Methods
https://read.qxmd.com/read/38530048/hybrid-hydrogen-bonding-strategy-to-construct-instantaneous-self-healing-highly-elastic-ionohydrogel-for-multi-functional-electronics
#18
JOURNAL ARTICLE
Hongfei Huang, Lijie Sun, Luzhi Zhang, Yalin Zhang, Youwei Zhang, Shunan Zhao, Shijia Gu, Wei Sun, Zhengwei You
Gels show great promise for applications in wearable electronics, biomedical devices, and energy storage systems due to their exceptional stretchability and adjustable electrical conductivity. However, the challenge lies in integrating multiple functions like elasticity, instantaneous self-healing, and a wide operating temperature range into a single gel. To address this issue, a hybrid hydrogen bonding strategy to construct gel with these desirable properties is proposed. The intricate network of hybrid strong weak hydrogen bonds within the polymer matrix enables these ionohydrogel to exhibit remarkable instantaneous self-healing, stretching up to five times their original length within seconds...
March 26, 2024: Small
https://read.qxmd.com/read/38529744/mxene-based-pressure-sensor-with-a-self-healing-property-for-joule-heating-and-friction-sliding
#19
JOURNAL ARTICLE
Yu Chen, Mengyao Gao, Kun Chen, Huili Sun, Haonan Xing, Xiaoqing Liu, Weijie Liu, Haizhong Guo
As a kind of flexible electronic device, flexible pressure sensor has attracted wide attention in medical monitoring and human-machine interaction. With the continuous deepening of research, high-sensitivity sensor is developing from single function to multi-function. However, Current multifunctional sensors lack the ability to integrate joule heating, detect sliding friction, and self-healing. Herein, a MXene/polyurethane (PU) flexible pressure sensor with a self-healing property for joule heating and friction sliding is fabricated...
March 26, 2024: Small
https://read.qxmd.com/read/38524556/effects-of-chitosan-and-tio-2-nanoparticles-on-the-antibacterial-property-and-ability-to-self-healing-of-cracks-and-retrieve-mechanical-characteristics-of-dental-composites
#20
JOURNAL ARTICLE
Reza Ravandi, Saeed Zeinali Heris, Salar Hemmati, Marziyeh Aghazadeh, Soodabeh Davaran, Nima Abdyazdani
The aim of this study was to improve the self-healing properties of dental nanocomposite using nanoparticles of TiO2 and chitosan. We evaluated flexural and compressive strength, crack-healing, and self-healing lifespan after 3 months of water aging. The effect of the developed composite on cell viability and toxicity was assessed by an MTT assay on human alveolar basal epithelial cells (A549 cell line). The nanocomposite included 7.5 wt% polyurea-formaldehyde (PUF) and 0, 0.5, and 1 wt% n-TiO2 and chitosan...
March 30, 2024: Heliyon
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