Abstract
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 Df value of the aggregates increased firstly and decreased afterwards (1.204→1.522→1.244). Organogel in benzene/ethanol mixtures showed higher thermostability (Tgel ) and mechanic properties with the increase of ethanol content.
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