Effects of solvent on gelation behavior and gel properties of a dihydrazide derivative organogel

ABSTRACT

By introducing more polar ethanol as a co-solvent to benzene, solvent effects on gelation behavior and gel properties of N,N’-bis (4-n-alkylo-xybenzoyl) hydrazine (4D₁₆) were investigated herein. Xerogel of 4D₁₆ showed fiber networks in benzene, while slice aggregates in benzene/ethanol mixtures and precipitates of 4D₁₆ in ethanol showed rod-like aggregates. XRD patterns revealed that the aggregation structure of 4D₁₆ translated from cubic phase to lamellar phase gradually with the increase of ethanol content. FT-IR spectra showed that the H-bonding of 4D₁₆ showing lamellar phase was stronger than that in cubic phase. Kinetics of gelation 4D₁₆ of showed that D_f value of the aggregates increased firstly and decreased afterwards (1.204→1.522→1.244). Organogel in benzene/ethanol mixtures showed higher thermostability (T_gel) and mechanic properties with the increase of ethanol content.

KEYWORDS:

• Dihydrazide derivative
• solvent
• morphology
• kinetics
• properties

Acknowledgments

The authors are grateful to the Inner Mongolia Natural Science Foundation (2022QN02017), IMUN Doctoral Research Startup Fund Project (BS507) for financial support of this work.

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

The work was supported by the Inner Mongolia Natural Science Foundation [2022QN02017]; IMUN Doctoral Research Startup Fund Project [BS507].