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A bio-based benzoxazine surfactant from amino acids

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Abstract

A novel bio-based benzoxazine (Ca-g) surfactant was synthesized via a Mannich reaction using renewable glycine and cardanol as raw materials. The structure of Ca-g was characterized by NMR, FT-IR, and elemental analysis. Styrene containing emulsions and polystyrene (PS) latex were prepared based on the Ca-g surfactant. These results showed that the Ca-g surfactant exhibited high efficiency for stabilizing styrene emulsions. An addition of only 1.7 (w/v)% stabilized the high internal phase emulsion (HIPE) with a styrene volume fraction up to 90%. More interestingly, HIPE exhibited pH-sensitivity and could be formed at pH values from 9.0 to 12.0. Furthermore, PS particles were obtained via HIPE polymerization. In addition, the in vitro cytotoxicity of Ca-g and its triglyceride emulsion was also investigated. Ca-g showed lower cytotoxicity against the HeLa cell line. A stable triglyceride-in-water emulsion stabilized by Ca-g was prepared. The bio-based Ca-g surfactant may have potential use in cosmetics and daily cleaning products.

Graphical abstract: A bio-based benzoxazine surfactant from amino acids

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Article information


Submitted
17 Jan 2020
Accepted
25 Apr 2020
First published
27 Apr 2020

Green Chem., 2020, Advance Article
Article type
Paper

A bio-based benzoxazine surfactant from amino acids

Z. Wang, S. Yao, K. Song, X. Gong, S. Zhang, S. Gao and Z. Lu, Green Chem., 2020, Advance Article , DOI: 10.1039/D0GC00218F

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