Zero-charged catanionic lamellar liquid crystals doped with fullerene C60 for potential applications in tribology
Hao JC(郝京诚); Chen, Mengjun1,2; Liu BY(刘宝勇)1; Wang, Xiaolin2; Fu, Yanxu2; Hao JC(郝京诚)2; Li HG(李洪光); Li HG(李洪光)1
刊名Soft Matter
2017
卷号13期号:36页码:6250-6258
ISSN号1744-683X
DOI10.1039/c7sm00800g
英文摘要

The formation of lamellar liquid crystals (LLCs) has been demonstrated in a few salt-free catanionic surfactant systems and their properties have been well documented. However, examples of their combination with other materials are relatively rare. Herein, a salt-free zero-charged catanionic surfactant with low chain melting temperature was prepared by mixing equimolar tetradecyltrimethylammonium oxide (TTAOH) and oleic acid (OA) in water, and its concentration-dependent aggregate transition was investigated. In the dilute region (cTTAO ≤ 5 wt%), fluorescence microscopy observations revealed the formation of vesicles (the Lαv phase). Further increasing cTTAO induced a transition from the Lαv phase to LLCs via a region where vesicles and lamellae coexist. With ordered hydrophobic domains, the LLCs can be used as hosts for the doping of fullerene C60 (refers to C60 hereafter) with the highest C60/TTAO weight ratio of 0.04. The doping of C60 effectively improves the viscoelasticity of the LLCs confirmed by rheological characterization while only slight modifications on their matrixes have been detected using small angle X-ray scattering measurements. The LLC/C60 hybrids with cTTAO = 80 wt% were then subjected to tribological measurements, and an obvious reduction in their friction coefficients and wear volumes was observed. The C60/TTAO weight ratio at which the best tribological performance appears was determined to be 0.01. Our results indicate that the combination of C60 and catanionic LLCs could lead to the appearance of a new generation of environmentally-benign lubricants.

学科主题材料科学与物理化学
资助项目柔性有机太阳能电池研究组
语种英语
WOS记录号WOS:000411445100022
资助机构the National Natural Science Foundation of China (No. 61474124;21402215;21420102006) ;the Hundred Talents Program of the Chinese Academy of Sciences (Y20245YBR1)
内容类型期刊论文
源URL[http://ir.licp.ac.cn/handle/362003/22513]  
专题兰州化学物理研究所_清洁能源化学与材料实验室
通讯作者Hao JC(郝京诚); Li HG(李洪光)
作者单位1.Laboratory of Clean Energy Chemistry and Materials, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, China
2.Key Laboratory of Colloid and Interface Chemistry & Key Laboratory of Special Aggregated Materials, Shandong University, Ministry of education, Jinan, China
推荐引用方式
GB/T 7714
Hao JC,Chen, Mengjun,Liu BY,et al. Zero-charged catanionic lamellar liquid crystals doped with fullerene C60 for potential applications in tribology[J]. Soft Matter,2017,13(36):6250-6258.
APA 郝京诚.,Chen, Mengjun.,Liu BY.,Wang, Xiaolin.,Fu, Yanxu.,...&Li HG.(2017).Zero-charged catanionic lamellar liquid crystals doped with fullerene C60 for potential applications in tribology.Soft Matter,13(36),6250-6258.
MLA 郝京诚,et al."Zero-charged catanionic lamellar liquid crystals doped with fullerene C60 for potential applications in tribology".Soft Matter 13.36(2017):6250-6258.
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