ACS Applied Materials & Interfaces
·
2021
·
IF 9.229
Hongxun Wang,Di Wei,Bao Zhang,Zekai Ji,Liguang Wang,Min Ling,Chengdu Liang
The large volume expansion of a silicon anode induces serious mechanical failure and limits its applications. Owing to the intrinsic weak van der Waals force and poor toughness, it is unable to solve this issue with the current commercial poly(vinylidene difluoride) (PVDF) binder. The development of a binder with strong binding strength with silicon (Si) is urgent. Herein, a hydroxyl-rich three-dimensional (3D) network binder is synthesized by chemical cross-linking reactions between epichlorohydrin (ECH) and sodium hyaluronate (SH), which exhibits dramatically enhanced toughness and cohesive properties. The Si anode with the novel SH-ECH as the binder delivers excellent electrochemical performance, especially cycling stability. The discharge capacity could maintain 800.4 mAh g–1 after 1000 cycles at a current of 0.2 C with the average capacity decay rate per cycle of 0.015%. Our results pave a new way for the tailoring of the chemical structures of natural polymers to realize lithium-ion batteries (LIBs) with superior electrochemical performance.
研究领域:
材料科学
·
电化学
·
生物材料
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2018
·
IF 3.909
Xuechuan Wang,Ke Chen,Wei Li,Dongyan Hao,Peiying Guo
In this research, collagen hydrolysates with different average molecular weights ( Mn ¯ ) from leather collagen were chosen as raw materials. Five environmental-friendly sizing agents (SA) were prepared by cross-linking collagen hydrolysates with glycol diglycidyl ether (GDE) and further grafting them with butyl acrylate (BA) and styrene (St). Then the compound sizing agents (SGDESA-x, x = 1, 2, 3 and 4) were obtained by simple physical mixing of GDESA and starch. The surface sizing performance of GDESA and compound sizing agents were studied. The research result shows that both physical, mechanical properties and water resistance of the corrugated paper coated by GDESA were significantly improved when Mn ¯ of collagen hydrolysate was about 10,000, and its emulsion exhibited robust stability in long standing time. Furthermore, when the SGDESA-2 was used as a sizing agent, the coated corrugated paper exhibited strong water resistance, good physical and mechanical properties even after refolded for 20 times.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Polymer Materials
·
2021
·
IF 4.089
Lu Liu,Jiancai Jiang,Xinyang Jin,Ran Li,Liqian Huang,Ni Wang,Narendra Reddy,Wanshuang Liu,Qiuran Jiang
The healing of chronic wounds, which bring profound problems, can be effectively promoted by skin tissue engineering using scaffolds with features of extracellular matrix (ECM) for supporting native cell growth. Protein ultrafine fibrous scaffolds, although with similar morphology and chemical composition to ECMs, show poor wet stability which leads to substantial deformation, low mechanical properties, and fast degradation. This research provides a two-step dry state treatment including a cross-linking process by ethylene glycol diglycidyl ether (EGDE) and a blocking process by lysine for the modification of zein ultrafine fibrous scaffold model. This distinctive two-step dry state treatment could effectively avoid fiber deformation before fully cross-linking and more importantly the concern of cytotoxicity. The modified zein/EGDE scaffolds displayed remarkable reduced shrinkage of merely 1.25%, enhanced thermal stability, improved mechanical properties around 3–4 fold, retardant degradation to above 60 days, and promoted cytocompatibility about three fold. This work revealed the possibility to develop strong, wet stable, and cytocompatible ultrafine fibers from various proteins for a wide variety of applications in the fields, such as, tissue engineering scaffolds, biosensors, and drug carriers.
研究领域:
生物材料学
·
组织工程
·
医学
✓ 已验证
产品关联
DOI
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2024
·
IF 5.6
Zhenyu Sun,Jianxiong Lyu,Ping Li,Yiqiang Wu,Xingong Li,Yingfeng Zuo
As green renewable resources, wood and its composites are widely used in the construction field, which puts forward higher requirements for their flame-retardant performance. In this study, a high-temperature hydrothermal crystallization method for in situ constructing an epoxy crosslinked Si–Al zeolite-like structural wood composite (W ZLC ) was reported. Under the action of amine guiding agents and epoxy resin, the zeolite-like catalytic structure constructed in poplar wood comprised negative electrocatalytic sites, which can efficiently catalyze the formation of the carbon layer and endow W ZLC with excellent flame retardant, smoke-suppression, and self-extinguishing properties. Compared with the untreated wood (W N ), the thermal stability of the treated wood (W ZLC ) was greatly improved, and the amount of volatile organic compounds released during the decomposition process was significantly reduced. The heat release rate, total heat release, smoke production rate, and total smoke production of W ZLC1 decreased by 50.23%, 44.14%, 45.21%, and 28.46%, respectively. Particularly, CO and CO 2 yields of W ZLC significantly decreased by 92.26% and 92.02%, respectively, indicating that the Si–Al zeolite-like catalytic structure displayed excellent catalytic flame retardant properties, which can effectively decrease the thermal decomposition rate and combustion risk of the W ZLC . This method uses less flame retardants to achieve a good flame retardant and smoke suppression effect, thereby reducing the risk of environmental pollution caused by too many flame retardants.
研究领域:
材料科学
·
化学工程
·
林业科学
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES
·
2023
·
IF 3.4
Zhenghui Lei,Jinqiu Qi,Jiulong Xie,Xingyan Huang,Yongze Jiang,Shaobo Zhang,Shanshan Jia,Qi Chen,Hui Xiao,Yuzhu Chen
Applications of eco-friendly soy protein (SP) adhesives in the wood industry are restricted by their poor wet bonding strength and mold resistance. In this study, we noted that epoxy crosslinking agents not only have cross-linking properties, but also antifungal properties and can be used as cross-linkable antifungal agents to simultaneously improve the mold resistance and strength of SP adhesives. In order to develop sustainable and highly active epoxy cross-linkable antifungal agents, biomass-derived oxalic acid (OA) was converted into epoxy oxalic acid (EOA) with two electron-withdrawing ester groups, with 99.93% antifungal activity. The 1% ultra-low amount of EOA (when used as crosslinking agent) was uniformly dispersed in the uncured adhesive, prompting the anti-mold life of the adhesive to increase from 2 to 26 days. After curing, the tighter and more stable cross-linked network structure of the adhesive was constructed by the reaction of low reactive groups such as amide II bonds with ultra-low amounts of EOA, and the dry and wet shear strengths were increased by 49.0% and 139.7%, respectively, compared with pure adhesives. In addition, the anti-mold life of the cured adhesive increased from 4 to more than 30 days under the action of residual EOA. This work demonstrates the novel antifungal effect of epoxy crosslinkers , providing a controllable, green, and sustainable idea for the high-efficient improvement of mold resistance and strength of bio-based adhesives.
研究领域:
材料科学
·
生物学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF POLYMER RESEARCH
·
2022
·Vol. 29
·期 3
·1-16
·
IF 3.061
Huang Xingyuan,Wang Jilin,Wang Lulu
A series of anion exchange membranes (AEMs) with high conductivity and stable chemical properties were prepared by using polyvinyl alcohol phytate (PPVA) as the polymer matrix, 1,4-diglycidyl butane ether (DGBE) as the crosslinking agent and 2,3-epoxypropyl trimethylammonium chloride (EPTMAC) as the quaternization reagent. The chemical structure of the AEMs synthesized in this paper was characterized by ATR-FTIR to determine the successful preparation of the membranes. Additionally, the mechanical property, OH − conductivity, alkaline stability, and single-cell performance of the membrane was also discussed. Based on our results, when the molar ratio of polyvinyl alcohol (PVA) to PA is 2:1, the content of DGBE is 10%, the maximum tensile strength (19.0 MPa) of the membrane was obtained, the anionic conductivity can reach up to 0.594 S·cm −1 and the power density reaches 122 mW·cm −2 at 80 °C. Moreover, the good alkali resistance stability of AEMs was also proved, which was due to the conductivity of the QPPVA 2 -DGBE 10% membrane can remain at around 80.7% of the initial conductivity when it was immersed in a 6 mol·L −1 KOH solution for 168 h at 60 °C. Compared with the commercial Nafion®-115 membrane, the prepared composite membranes synthesized in this paper have a lower methanol permeability in 3 mol·L −1 methanol at 60 °C, which is only 8.1% ~ 13.7% of Nafion®-115 membrane.
研究领域:
材料科学
·
能源工程
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
BIOMACROMOLECULES
·
2022
·
IF 6.978
Hengjie Zhang,Yao Xiao,Peng Chen,Huan Cao,Wanjie Bai,Zhen Yang,Peng Yang,Yiwen Li,Zhipeng Gu
Although adhesive hydrogels have been extensively explored, the development of adhesives with long-term strong adhesion capacity under various harsh environments is still met with profound challenges such as sophisticated preparation, long-term curing, and low bonding strength. Herein, a series of robust adhesive hydrogels have been developed via the polyphenol-epoxy-cross-linking (PEC) reactions between natural polyphenols (extracts) and epoxy glycidyl ethers. The as-prepared natural polyphenolic adhesive hydrogels could induce strong adhesion onto several kinds of typical substrates (i.e., wood, glass, paper, PET, PMMA, and Fe) under both dry and wet conditions based on multi-interactions. Moreover, those natural polyphenolic adhesives exhibited good low-temperature and solvent resistance performances, which could be widely used in different kinds of device repairment (i.e., chemical, petroleum, wood, metal, glass, plastic, rubber, and other industries) under different conditions. This work could provide new opportunities toward natural-inspired robust adhesives in various fields ranging from chemical transportation, industrial manufacturing, architectural design, and marine engineering to daily life.
研究领域:
材料科学
·
化学工程
·
生物启发材料
✓ 已验证
产品关联
DOI
PubMed
高影响因子
LANGMUIR
·
2022
·
IF 4.331
Yangguan Chen,Guorong Lin,Haorui Liu,Jinrui Zhang,Shuixia Chen
Solid amine adsorbents are promising materials to mitigate global warming. In this study, a commercially available melamine-formaldehyde sponge was adopted as a support to prepare a kind of solid amine adsorbent using polyethylenimine as a functional component and ethylene glycol diglycidyl ether as a cross-linker. The adsorbent, with abundant tunnels and a high amine loading amount, had a high adsorption capacity. When the amine loading was 89.6 wt%, the as-prepared adsorbent showed a high adsorption capacity of 7.29 mmol/g at 20 °C in the presence of water. The spent adsorbent could be easily regenerated by heating it at 90 °C, resulting in lower energy consumption. It has been proved by the Avrami model that physical and chemical adsorption coexist in the adsorption of CO2 on this adsorbent. Simulation with the intraparticle diffusion model has revealed that the rate-controlling step in the adsorption process was the gas film diffusion period when the adsorption temperature was below 30 °C, while it was the adsorption equilibrium period when the adsorption temperature was above 30 °C.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2024
·
IF 5.6
Chang Li,Qingrui Dai,Weidong Wu,Dong Yu Zhu,Xueqing Qiu
Cellulose plastic is an environmentally friendly material that shows excellent performance in the field of polymer materials. However, it exhibits a relatively high processing temperature, poor solvent resistance, and high performance loss during high-temperature reprocessing hindering its applications. We report the preparation of a cellulose-based grape-based vitrimer by grafting a bioepoxy cross-linker and an internal plasticiser (alkoxyglycidyl ether) onto a cellulose chain via an epoxy chemical reaction. The glass transition temperature, processability, and reprocessing conditions of the material were adjusted by changing the ratio of the crosslinking agent and the internal plasticizer. The prepared cellulose-based vitrimers had low glass transition temperatures, good processing and solvent resistance, and excellent reprocessing and recycling performance. The introduction of a covalent crosslinking network reduced the reprocessing temperature of the cellulose-based materials and avoided the migration and seepage of plasticizers. This study provides an important basis for the use of cellulose in the preparation of green and sustainable vitrimers for potential industrial applications.
研究领域:
材料科学
·
绿色化学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Yantao Xu,Yufei Han,Yue Li,Jingchao Li,Jianzhang Li,Qiang Gao
It is important but challenging to develop multifunctional soy protein adhesives with high bonding strength to replace toxic formaldehyde-based adhesives used in the wood-based panel fabrication industry. In this study, inspired by arthropod cuticles, the epoxide-crosslinked soy protein isolate (SPI) was used to form the covalently-bonded network, and dopamine-functionalized waste paper fiber (WPF-PDA) was synthesized as the catechol groups donor to form the hydrogen bond network and physically-enhancement, copper hydroxide was used as an inorganic material that chelated with the catechol groups of WPF-PDA to form the ionic bond network. This formed an organic-inorganic hybrid multiple-bonding structure in the soy protein adhesive. The results showed that the dry/wet shear strength of the plywood prepared by the resultant adhesive increased by 46% and 144% to 2.0 and 1.22 MPa, respectively, compared with SPI adhesive. The fracture toughness increased by 145%, and the residual rate of the adhesive increased by 18.6%, indicating that the bonding strength, toughness, and water resistance of the adhesive were significantly improved. In addition, the anti-mildew time of the adhesive increased from 1 d to more than 40 d, while the maximum heat release rate and total heat release decreased by 32.5% and 5.8%, respectively. This strategy provides a potential method to develop high-performance and multifunctional bio-adhesives, composites, and hydrogels.
研究领域:
材料科学
·
化学工程
·
生物技术
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）