POLYMER SCIENCE SERIES B
·
2024
·Vol. 65
·期 6
·842-857
·
IF 1
Wanting Zhao,Su Qin,Lyu Ya
Abstract In this paper, tung oil-linseed oil (TO-LSO) and styrene-linseed oil (STY-LSO) were used as raw materials of sulfur-rich copolymers, which were then reversed vulcanized with S 8 at 130°C, and the gel time of the reaction was recorded. At the same time, 1 H NMR, DSC, XRD, sodium sulfite titration and other characterization methods were used to measure the reaction degree, verify the conjugated structure to improve the reaction degree, and study the synthesis mechanism of sulfur-rich copolymer. The results show that the conjugated structure can improve the reaction degree. And when the proportion of TO and STY is 20 and 10% respectively, the reaction gel time is shortened, the reaction degree is greatly deepened, and the effect of promoting polymerization can be significantly obtained. The synthesis mechanism of copolymer is the result of conjugated structure and diallyl group. The self-repair of sulfur-rich copolymers at different temperature and holding time by hot press shows that poly(20-TO-LSO-50S) can realize the S‒S bond self-repair after being compressed at 120°C for 4 h, and the surface of polymer disc was smoother and more uniform. However, poly(10STY-LSO-50S) can be repaired only after being compressed for 8 h. TO can not only enhance the synthesis process, but also enhance the performance of sulfur-rich materials and broaden the application field.
研究领域:
材料科学
·
化学工程
✓ 已验证
DOI
高影响因子
ACS Applied Polymer Materials
·
2022
·
IF 4.855
Congcong Miao,Xingwei Xun,Liam J. Dodd,Shiquan Niu,Haoran Wang,Peiyao Yan,Xi-Cun Wang,Jian Li,Xiaofeng Wu,Tom Hasell,Zheng-Jun Quan
Sulfur-rich polymers generated from the inverse vulcanization of elemental sulfur with unsaturated monomers have emerged as a family of organic polymers with unique functionalities and broad potential applications. First described in 2013, inverse vulcanization is still in its infancy regarding its fundamental development, property exploration of the resultant polymers, and practical utilizations. Herein, the robust properties of sulfur-rich composites generated by inverse vulcanization with SiO2-embedded elemental sulfur are revealed, furnishing superhydrophobicity with static water contact angles of up to 154.7 ± 1.8°, a high anticorrosive effect of 98.9% protection efficiency for Mg alloy in 3.5 wt % NaCl solution, and a good antibacterial performance against Escherichia coli (81%) and Staphylococcus aureus (75%). The resulted composite also shows excellent self-cleaning functionalities. This has not only expanded the properties/functionalities and applications of the sulfur-rich polymers resulting from inverse vulcanization but also provided low-cost alternatives to superhydrophobic coating materials for practical applications.
研究领域:
材料科学
·
聚合物化学
·
表面科学
·
腐蚀科学
·
生物材料
✓ 已验证
产品关联
DOI
高影响因子
Nature Communications
·
2022
·Vol. 13
·期 1
·1-13
·
IF 17.694
Zeng Dewu,Yao Jingming,Zhang Long,Xu Ruonan,Wang Shaojie,Yan Xinlin,Yu Chuang,Wang Lin
The use of inorganic solid-state electrolytes is considered a viable strategy for developing high-energy Li-based metal batteries. However, suppression of parasitic interfacial reactions and growth of unfavorable Li metal depositions upon cycling are challenging aspects and not yet fully addressed. Here, to better understand these phenomena, we investigate various sulfide inorganic solid electrolytes (SEs), i.e., Li 7− x PS 6− x Cl x ( x = 0.6, 1.0, 1.3, 1.45, and 1.6), via ex situ and in situ physicochemical and electrochemical measurements. We found that the Cl distribution and the cooling process applied during the SE synthesis strongly influence the evolution of the Li|SE interface in terms of microstructure, interphase composition, and morphology. Indeed, for a SE with a moderate chlorine content (i.e., x = 1.3) and obtained via a slow cooling process after sintering, the Cl atoms are located on the surface of the SE grains as interconnected LiCl nanoparticles that form an extended LiCl-based framework. This peculiar microstructure facilitates the migration of the Cl ions to the Li|SE interface during electrochemical cycling, thus, favouring the formation of a LiCl-rich interphase layer capable of improving the battery cycling performances.
研究领域:
材料科学
·
电化学
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电池技术
✓ 已验证
DOI
PubMed
高影响因子
MICROCHIMICA ACTA
·
2014
·Vol. 181
·期 11
·1361-1367
·
IF 3.719
Luo Xubiao,Wu Wenbin,Deng Fang,Chen Dezhi,Luo Shenglian,Au Chaktong
Silica-coated, thiol-enriched and zinc-doped CdS quantum dots (SiO 2 -S-Zn-CdS QDs) were fabricated by a sol–gel process and used as fluorescent probe for imaging and monitoring of intracellular Cd(II) and Zn(II) in endophytes in the “turn-on” mode. There is a linear relationship between fluorescence intensity and the concentration of Zn(II) in the 3.5 – 23.2 μM concentration range and with a detection limit of 2.0 μM. The probe also responds well to Cd(II) in the 0.3 – 26 μM concentration range and the detection limit is 0.1 μM. Due to its negligible cytotoxicity, fair sensitivity and good photostability, the quantum dot probe presented here is a promising tool for fluorescent imaging of intracellular Zn(II) or Cd(II).
The SiO 2 -S-Zn-CdS QDs “turn-on” fluorescent probe shows superior selectivity for Zn 2+ and Cd 2+
研究领域:
材料科学
·
纳米技术
·
分析化学
·
生物成像
✓ 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）