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ARTICLE

Preparation and Characterization of Biobased Dehydroabietyl Polyethylene Glycol Glycidyl Ether-Grafted Hydroxyethyl Cellulose with High Emulsifying Property

Zhengqing Ding, Quan Yang, Xinyan Yan, Feng Gu, Xujuan Huang^*, Zhaosheng Cai^*

School of Chemical and Chemistry, Yancheng Institute of Technology, Yancheng, 224051, China

* Corresponding Authors: Xujuan Huang. Email: ; Zhaosheng Cai. Email:

(This article belongs to the Special Issue: Multifunctional and Comprehensive bio-based Forest Product Chemistry)

Journal of Renewable Materials 2024, 12(1), 103-117. https://doi.org/10.32604/jrm.2023.029424

Received 18 February 2023; Accepted 20 March 2023; Issue published 23 January 2024

Abstract

Dehydroabietyl polyethylene glycol glycidyl ether-grafted hydroxyethyl cellulose (HEC) polymer surfactant (DA(EO)₅GE-g-HEC) was prepared using ring-opening polymerization with biobased rosin and hydroxyethyl cellulose as feedstocks. Dehydroabietyl polyethylene glycol glycidyl ether (DA(EO)₅GE) was formed by condensation of dehydroabietyl alcohol polyoxyethylene ether (Rosin derivative: DA(EO)₅H) and epichlorohydrin. The grafting degree of DA(EO)₅GE-g-HEC was manipulated by adjusting the mass ratio of HEC and DA(EO)₅GE and confirmed by EA. According to the formula, when m_(HEC)/m_(DA(EO)2GE) was 1:1~1:5, the grafting rate of DA(EO)₅GE in DA(EO)₅GE-g-HEC varied from 34.43% to 38.33%. The surface activity and foam properties of DA(EO)₅GE-g-HEC aqueous solution were studied. The results showed that with the increase in grafting rate, the critical micellar concentration (CMC) in aqueous solution changed from 1.28 to 0.96 g/L. The results of the thermogravimetric analysis showed that the temperature range of the main stage of mass loss of DA(EO)₅GE-g-HEC was 310°C~410°C, and the thermal decomposition processes of the samples with five mass ratios were similar. An oil in water emulsion was prepared by choosing cyclohexane as the oil phase and DA(EO)₅GE-g-HEC as the emulsifier. The effect of DA(EO)₅GE-g-HEC mass fraction on emulsion particle size and stability was analyzed. The results suggested that when the oil-water ratio was 8:2 with 0.4% emulsifier, the emulsion droplets were the smallest in terms of particle size and were the most stable. The rheological test results showed that the apparent viscosity decreased with the increase in shear rate and showed a typical elastic gel phenomenon.

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