Journal of Cleaner Production
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2025
·
IF 10
Kuiling Wei,Xuejuan Cao,Yan Wu,Boming Tang,Bailin Shan,Xinqiang Zhang
In recent years, self-healing waterborne polyurethanes (SWPUs) with stimuli-responsive properties have attracted increasing attention. It is critical that dynamic crosslinking networks are designed to respond to appropriate stimulus. In this work, the effects of disulfide bonds, acylhydrazone bonds, and intrinsic hydrogen bonding on the mechanical properties, self-healing performance, and degradation behavior of SWPUs were explored. Initially, disulfide bonds were introduced into the crosslinked networks through a simple chemical modification of cystamine dihydrochloride, providing a cost-effective alternative to typical disulfide bond monomers. Subsequently, bio-based vanillin was used to cap isocyanate groups at ratios of 0.25, 0.5, 0.75, and 1.0, creating reactive sites for the condensation of diacylhydrazine with carbonyl groups. By adjusting the end-capping ratios, varying concentrations of acylhydrazone bonds were incorporated into the networks. The results indicated that increasing the end-capping ratio led to >83.4 % self-healing efficiency of SWPUs under both thermal and acidic conditions. The disordered hydrogen bonds improved the fracture strength of SWPUs, while the ordered hydrogen bonds enhanced the stiffness during stretching. In addition, the degradation test results revealed that SWPU was fully decomposed in a THF solvent (2-mercaptoethanol/deionized water/THF = 2/2/8, volume ratio). This excellent degradability is primarily attributed to the combined effects of imine hydrolysis, dynamic disulfide bonds, and copolymer fragmentation at single bonds near the carbonyl groups. This work presents a novel approach for designing polyurethane elastomers with multiple dynamic adaptive networks, offering the potential for low-cost production and cleaner preparation.
研究领域:
材料科学
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化学工程
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产品关联
DOI
高影响因子
FOOD HYDROCOLLOIDS
·
2019
·
IF 5.839
Peishan Li,Yongguo Jin,Long Sheng
Three egg white protein powders under different treatments (untreated, microwave-alone treated and microwave-assisted phosphorylation modification) were prepared and their physicochemistry and rehydration behavior were investigated in this study. Scanning electron microscopy (SEM) and physical property measurements showed that the particle size and specific surface area decreased and increased, respectively, in phosphorylated egg white protein and that the particles became looser and more porous. Fourier Transform infrared spectroscopy (FTIR) showed that phosphate groups were successfully introduced into the egg white protein side chain. After phosphorylation modification via microwave treatment of the egg white protein, the egg white protein had increased electronegativity and reduced surface hydrophobicity. Treatment with microwave heating had a negative impact on the rehydration of egg white powder, and phosphorylation modification inhibited this effect to some extent. Compared with microwave-alone treated egg white protein powder, phosphorylated egg white powder showed increased wettability, dispersibility and solubility under alkaline conditions and at 20–40 °C. The maximum solubility of phosphorylated egg white powder (95.52 g/100 g) was higher than that of native egg white powder (93.16 g/100 g) and microwave-alone treated egg white powder (92.76 g/100 g) at pH 10.0.
研究领域:
食品科学
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生物化学
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产品关联
DOI
高影响因子
JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY
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2018
·Vol. 56
·期 13
·1412-1423
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IF 2.588
Nigus Mesele Tsegay,Xiang-Yun Du,Si-Si Liu,Cai-Feng Wang,Su Chen
Frontal polymerization (FP) is applied for the synthesis of β-cyclodextrin/poly(vinylimidazole- co -N-vinylcaprolactam- co -acrylic acid) (β-CD/P(VI- co -NVCL- co -AA)) copolymers. The dependence of frontal velocity and temperature on the initiator and cross-linker are discussed. The synthesized copolymers have been characterized by Fourier transform infrared (FTIR), thermogravimetric analysis (TGA), and scanning electron microscopy (SEM). The thermo-pH dual-stimuli responsive behavior of the hydrogel is determined by swelling measurement at different temperatures and pH values. Besides, the hydrogels show intrinsic self-healing behavior and their healing efficiency is determined by the mechanical tests. Interestingly, we integrate FP with microfluidic technology, which may realize the execution of FP under continuous condition. Such simple microfluidics-FP integrated approach has both methodological and practical value for the synthesis of functional materials. This paper mainly presents the synthesis and characterization of β-cyclodextrin/poly(vinylimidazole- co -N-vinylcaprolactam- co -acrylic acid) (β-CD/P(VI- co -NVCL- co -AA)) copolymers by using thermal frontal polymerization (TFP). Hydrogels were found to be self-healing with good mechanical performance and show dual thermo-pH responsive behavior. Low-cost, energy-saving and efficient method of thermal frontal polymerization process was integrated with microfluidics technology to prepare supraball hydrogel. © 2018 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2018 , 56 , 1412–1423
研究领域:
材料科学
·
高分子化学
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产品关联
DOI
高影响因子
CARBOHYDRATE POLYMERS
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2022
·
IF 10.723
Wen Li,Lu-Qi Tao,Mei-Cun Kang,Chang-Heng Li,Ci-Yong Luo,Gang He,Tian-Yi Sang,Ping Wang
Conductive hydrogels featuring a modulus similar to the skin have flourished in health monitoring and human-machine interface systems. However, developing conductive hydrogels with self-healing and tunable force-electrical performance remains a problem. Herein, a hydrogen bonding cross-linking strategy was utilized by incorporating silk sericin-modified carbon nanotubes (SS@CNTs) into sodium alginate (SA) and polyvinyl alcohol (PVA). Hydrogels synthesized with desirable tensile strength and self-healing ability (67.2 % self-healing efficiency in fracture strength) assembled into strain sensors with a low detection limit of 0.5 % and a gauge factor (GF) of 4.75 (0–17 %). Additionally, as-prepared hydrogels exhibit high sensitivity to tiny pressure changes, allowing recognition of complex handwriting. Notably, resulting hydrogels possess self-powered property, generating up to 215 V and illuminating 100 commercial green LEDs. This work stems from the pressing need for multifunctional hydrogels with prospective applications in human motion sensing and energy harvesting.
研究领域:
材料科学
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生物医学工程
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传感器技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF FOOD COMPOSITION AND ANALYSIS
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2023
·
IF 4.3
Zhiwen Shen,Aonan Luan,Shixian Yi,Jinhong Wu,Faxiang Wang,Yongle Liu,Xianghong Li
In this study, atmospheric cold plasma (CP) was applied to treat dried fish products at 65 kV and 60 Hz, and its effects on the composition associated with the physicochemical properties were investigated. The CP treatment for 5 min induced the fracture and contraction of fish muscle fibers and increased the microporous structure, and the moisture content of the samples reduced from 39.88 % to 37.88 %. Compared to the control group, the 5-min CP treatment decreased the puncture hardness from 10.42 to 8.43 N ( p < 0.05), and increased the final rehydration ratio from 20.86 % to 28.84 %. In addition, the 5-min CP treatment increased cathepsin B + L by 58 %, and increased trichloroacetic acid (TCA) soluble peptides content by 12 % ( p < 0.05), which indicated that CP contributed to protein degradation. Besides, the CP treatment also promoted lipid oxidation (TBARs value increased from 1.12 to 1.96 mg/Kg) and the production of dicarbonyl compounds (3-deoxyglucuronide and 2,3-butanedione were increased from 0.56 and 0.51–0.95 and 1.75 μg/g, respectively) ( p < 0.05). In conclusion, CP is promising for improving storage stability, chewiness and rehydration of dried fish products, which associated with moderate protein degradation and lipid oxidation in fish muscle.
研究领域:
食品科学
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生物化学
✓ 已验证
产品关联
DOI
高影响因子
CARBOHYDRATE POLYMERS
·
2020
·
IF 7.182
Jie Ding,Zi Qiao,Yusheng Zhang,Danrui Wei,Suping Chen,Jiajia Tang,Lu Chen,Dan Wei,Jing Sun,Hongsong Fan
Conductive and self-healing hydrogel sensor is perspective in human-machine interaction applications. However, the design of ideal self-healing hydrogels are always challenging. Herein, by introducing disulfide modified Ag nanowires (AgNWs), we show a novel self-healing hydrogel strain sensor with superior mechanics, conductivity, antibacterial property , and firstly realizing of self-healing with both recovery of mechanics and sensing properties. We demonstrate that the covalent and reversible non-covalent hydrophobic blocks in hydrophobic modified polyacrylamide (HMPAM) achieves the basic self-healing network; dextran with plentiful hydroxyl groups synergistic helps the self-healing by hydrogen bonds ; disulfide on the AgNWs surface forms a NIR-responsive and dynamic Ag-S coordination bridge between HMPAM and AgNWs. The resulted hydrogel sensor exhibits comprehensive electromechanical properties, and precisely monitors human motion and subtle electromyography (EMG) signals. Importantly, we firstly achieved the recovery of sensing properties on human motion detection and EMG signal detection after self-healing. This work provides a promising exploration to manufacture bionic strain sensors for potential applications in wearable electronics.
研究领域:
材料科学
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生物医学工程
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传感器技术
✓ 已验证
DOI
PubMed
高影响因子
LWT-FOOD SCIENCE AND TECHNOLOGY
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2025
·
IF 6.6
Cuiping Yi,Sijie Zhang,Nannan Qiang,Zuyin Li
Rehydration of dried rice noodles (DRN) is a time-consuming process and has a significant impact on the quality of the rice noodles. In this study, the relationship between rehydration conditions and moisture content was explored through the rehydration kinetics analysis, and the effect of rehydration temperature on the quality of DRN was investigated, and preservation methods were optimized for preservative to improve storage quality on rehydrated rice noodles (RRN). The results demonstrated that the rehydration process of DRN could be described using mathematical equation, and the fitted and predictable equations were obtained. RRN remained better in terms of cooking quality, texture, and the rate of rupture after optimizing rehydration conditions. When the concentrations of lactic acid, ε-polylysine, and sodium dehydroacetate were 25 ppm, 63 ppm, and 200 ppm, respectively, the initial aerobic plate count of RRN was the lowest, and the shelf-life was extended to 3 days. Though the E-nose and Loadings analysis, nitrogen oxides, and aromatic hydrocarbons, played an important role in differentiating the odor of RRN. Understanding the rehydration process helped to maintain the quality of RRN, and the optimization of the preservative is expected to be applied to increase the economic benefits in rice products-related enterprises.
研究领域:
食品科学
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生物化学
✓ 已验证
产品关联
DOI
高影响因子
RSC Advances
·
2017
·Vol. 7
·期 33
·20093-20100
·
IF 3.108
Ye Xiao,Huihua Huang,Xiaohong Peng
Polyurethanes can be modified to obtain an intrinsic self-healing property, which is the ability to self-recover from the damage of bulk materials, by changing the ways of increasing the density of hydrogen bonds or by inducing additional reversible crosslinks. An environment-friendly self-healing waterborne polyurethane (SHWPU) containing sulphonate groups was synthesized from isophorone diisocyanate, poly(tetramethylene glycol) and poly(1,4-butylene adipate glycol) and dispersed in water using the aliphatic diamine sulphonate as a hydrophilic chain-extender. The SHWPU coatings show a higher healing efficiency than the coatings without sulphonate group chains extended by ethylenediamine (EDA). With an increase in the soft contents, the healing efficiency increases, by virtue of which the polymer can completely recover itself at a temperature of 100 °C for 18 h. Moreover, significant phase separation of the continuous soft phase distributed with a spot-like hard phase is observed, which is due to the formation of ionic clusters.
研究领域:
材料科学
·
高分子化学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2019
·
IF 8.355
Yingxi Lin,Haiyan Zhang,Haiyang Liao,Yue Zhao,Kuan Li
The ability of self-healing for wearable electronic devices are critical, for their vulnerability and irreversible damages while practical applications. Herein, we report a ferric enhancing dual physical cross-linking polyelectrolyte for supercapacitors . The gel electrolyte is copolymerized by using acrylic acid as a hydrophilic monomer and stearyl methacrylate as a hydrophobic monomer in an aqueous ferric nitrate solution with cationic surfactant cetyltrimethylammonium bromide and subsequently immersed in the sulfuric acid solution. With the help of hydrogen bonding and ionic bonding, the prepared hydrogel containing 1 mol L −1 H 2 SO 4 exhibits good mechanical performance (extensibility >2400%, and stress >230 kPa), excellent ionic conductive (>30 mS cm −1 ), and good self-healing efficiency. Base on this polyelectrolyte, we successfully assemble the self-healing supercapacitor by two identical electrodeposited nano-wire PANI electrodes. The self-healing device achieves an excellent energy density of 19.33 Wh kg −1 at power densities of 0.67 kW kg −1 , self-healable ability (∼86% capacitance retention after healing behavior), aging durability, and cycling stability. Our results provide a valid and straightforward strategy to design self-healing energy storage devices.
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
EUROPEAN POLYMER JOURNAL
·
2020
·
IF 3.862
Yang Chen,Tao Liu,Guoyin Wang,Jianzhi Liu,Ling Zhao,Yueqin Yu
Achieving hydrogels with mechanical and self-healing properties is highly desirable for their expanding applications, yet remains an ongoing challenge. The synergistic design of dynamic reversible chemical bond opens a new research direction for this material. Herein, a molecular design strategy is proposed via dynamic reversible ionic bond formed between amino and sulfonic acid groups endow self-healing properties for hydrogels while introducing the N -isopropylacrylamide (NIPAm) crosslinked network realized the strength property including high compressive strength and high ductility, and intrinsic temperature sensitivity due to its unique amphiphilic structure for water. By adjusting the mass ratios of NIPAm, 2-acrylamido-2-methylpropanesulfonic acid (AMPS) and chitosan (CS), the optimal synthesis conditions for the P(AMPS-NIPAm)/CS hydrogel were obtained. Importantly, this intelligent P(AMPS-NIPAm)/CS hydrogel reveals a successful balance between mechanical and self-healing properties into advanced materials. The self-healing efficiency is as high as 98.51%. Furthermore, the lower critical solution temperature (LCST) of sample AMPS/CS-1.4:1 is 37 ℃, which is closest to the human body temperature. These characteristics open a novel pathway to intelligent self-healing hydrogels in terms of drug delivery and wound dressings.
研究领域:
材料科学
·
生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry B
·
2021
·Vol. 9
·期 9
·2266-2274
·
IF 6.331
Wen Jing Yang,Xiaodong Wang,Rui Zhang,Yuxin Wang,Qiu Qiu,Lihui Yuwen,Lianhui Wang
A hybrid self-healing hydrogel (PM hydrogel), based on polyvinyl alcohol (PVA) and chemically exfoliated molybdenum disulfide (ce-MoS2) nanosheets, was prepared by a simple freeze–thaw method. Due to the excellent photothermal conversion properties of ce-MoS2 nanosheets, the PM hydrogel self-repaired rapidly under near infrared (NIR) light irradiation for only 3 min with a high healing efficiency of 91.8 ± 3.3%. The PVA content, ce-MoS2 nanosheet loading and light irradiation time played important roles in the self-healing performance. Additionally, the PM hydrogel also revealed good self-healing properties with a healing efficiency of 60.6 ± 3.6% after the cut surfaces were separated for 24 h. The present approach provides an effective strategy for fabricating fast light-triggered hydrogen-bond based self-healing systems. The as-prepared hybrid PM hydrogel has great potential as a soft biomaterial for long-term applications due to its biocompatibility and self-healing capability.
研究领域:
材料科学
·
生物医学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Polymer Materials
·
2019
·
IF 0
Su-Na Yin,Juan Liu,Defeng Wu,Su Chen,Weiwei Xia
As important biological functions of many creatures, structural colors and self-healing features play crucial roles in the survival of organisms. Inspired by these features, the intelligent self-healing colloidal photonic crystals (CPCs) materials with stable structural colors are constructed here by immobilizing magnetically assembling Fe3O4@SiO2 colloidal nanoparticles into a self-repairing hydrogel matrix. The self-repairing hydrogels, prepared by using biodegradable material poly(1-vinyl-2-pyrrolidinone-co-acrylamide) modified with O-carboxymethyl chitosan (O-CMC), exhibit an outstanding mechanical property with favorable toughness and elasticity. Interestingly, one-dimensional Fe3O4@SiO2 chain structures embedded in the framework can maintain the stability of the photonic band-gap structure and its resultant bright structural colors. Furthermore, O-CMC contained in the matrix can supply plentiful carboxyl, amino, and hydroxyl functional groups which can form abundant intermolecular hydrogen bonds, and thus give the robust self-healing capability to the CPC colored hydrogels. On the basis of such CPCs hydrogels with bright structural colors and robust self-healing properties, a 3D flower pattern has been designed to realize arbitrary 3D configurable modeling. This work might constitute a promising simple way to fabricate structural colored CPC materials with a longer functional life, and thus extend their practical applications.
研究领域:
材料科学
·
生物仿生学
✓ 已验证
产品关联
DOI
危险品化学品经营许可证（带存储）