Study on rheology of a novel UV-light sensitive trimeric anionic–cationic surfactant/trans-o-methoxycinnamic acid micellar system
Author:
Han Xiaoyang1, Xu Wenting1, Fang Bo1, Li Yudie1, Tian Zhenrui1
Affiliation:
1. Shanghai Key Laboratory of Multiphase Materials Chemical Engineering, Lab of Chemical Engineering Rheology, Research Centre of Chemical Engineering , East China University of Science and Technology , Shanghai , 200237 , China
Abstract
Abstract
Two novel UV photosensitive micellar systems, trimeric dodecyl anionic–cationic surfactant (TDCC)/trans-OMCA, and trimeric cetyl anionic–cationic surfactant (TCCC)/trans-OMCA, were successfully synthesized by using two different carbon chain length trimeric anionic–cationic surfactants (TACS, including TDCC and TCCC) and the photosensitive additive trans-o-methoxycinnamic acid (trans-OMCA). The incorporation of trans-OMCA resulted in a peak in the zero shear viscosity (η
0) of the system at pH = 6.17–6.61. The flow behaviour of the TACS/OMCA system was well described by the Carreau-Yasuda model. Prior to UV irradiation, the TCCC/trans-OMCA system exhibited pronounced shear thinning, thixotropic, and viscoelastic properties. After UV irradiation at 365 nm, the isomerization of trans-OMCA to cis-OMCA caused the disruption of the network structures, leading to a significant decrease in the thixotropic and viscoelastic properties, resulting in a decrease in viscosity. The viscosity reduction rate of the TCCC/trans-OMCA system reached 99 %. The influence of the hydrophobic carbon chain length on the UV responsiveness was also investigated. The TDCC/trans-OMCA system exhibited an 86 % decrease in η
0 after UV irradiation, highlighting the favorable effect of longer hydrophobic tail chains in improving the UV responsiveness of the micellar system. The UV light kinetics of the TCCC/trans-OMCA solution were studied and a rheological model was developed to accurately describe the viscosity changes. The TCCC was found to predominantly exhibit cationic characteristics at pH = 6.17–6.61. In this pH range, the 2 wt% TCCC/0.12 wt% NaSal system exhibited excellent viscoelasticity, and the addition of trans-OMCA disrupted the network structure resulting in a decrease in viscosity. After UV irradiation, the viscosity of the system increased by 2.5 times, confirming the potential of the TCCC/NaSal/trans-OMCA micellar system as a UV thickener.
Publisher
Walter de Gruyter GmbH
Subject
Condensed Matter Physics,General Chemical Engineering,General Chemistry
Reference53 articles.
1. Ketner, A. M., Kumar, R., Davies, T. S., Elder, P. W., Raghavan, S. R. A simple class of photorheological fluids: surfactant solutions with viscosity tunable by light. J. Am. Chem. Soc. 2007, 129, 1553–1559; https://doi.org/10.1021/ja065053g. 2. Liu, W., Ye, Z., Chen, Q., Huang, X., Shang, Y., Liu, H., Meng, H., He, Y., Dong, Y. Effect of the substituent position on the phase behavior and photoresponsive dynamic behavior of mixed systems of a Gemini surfactant and trans-methoxy sodium cinnamates. Langmuir 2021, 37, 9518–9531; https://doi.org/10.1021/acs.langmuir.1c01372. 3. Liu, W., Chen, Q., Shang, Y., Teng, H., Liu, H. Semi-quantitative analysis of the UV-responsive behavior of anisotropic phase constructed by Gemini surfactant 12-3-12·2Br− and trans-ortho-methoxycinnamate. Colloids Surf. A Physicochem. Eng. Asp. 2020, 605, 125348; https://doi.org/10.1016/j.colsurfa.2020.125348. 4. Zhang, K., Liu, J., Guo, Y., Li, Y., Ma, X., Lei, Z. Synthesis of temperature, pH, light and dual-redox quintuple-stimuli-responsive shell-crosslinked polymeric nanoparticles for controlled release. Mater. Sci. Eng. C 2018, 87, 1–9; https://doi.org/10.1016/j.msec.2018.02.005. 5. Shang, Y., Zheng, N., Wang, Z. Tetraphenylsilane-cored star-shaped polymer micelles with pH/redox dual response and active targeting function for drug-controlled release. Biomacromolecules 2019, 20, 4602–4610; https://doi.org/10.1021/acs.biomac.9b01472.
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