Facile Construction of Bio-Based Supramolecular Hydrogels from Dehydroabietic Acid with a Tricyclic Hydrophenanthrene Skeleton and Stabilized Gel Emulsions

Abstract

Supramolecular hydrogels have attracted great attention due to their special properties. In this research, bio-based supramolecular hydrogels were conveniently constructed by heating and ultrasounding two components of dehydroabietic acid with a rigid tricyclic hydrophenanthrene skeleton and morpholine. The microstructures and properties of hydrogels were investigated by DSC, rheology, SAXS, CD spectroscopy, and cryo-TEM, respectively. The critical gel concentration (CGC) of the hydrogel was 0.3 mol·L−1 and the gel temperature was 115 °C. In addition, the hydrogel showed good stability and mechanical properties according to rheology results. Cryo-TEM images reveal that the microstructure of hydrogel is fibrous meshes; its corresponding mechanism has been studied using FT-IR spectra. Additionally, oil-in-water gel emulsions were prepared by the hydrogel at a concentration above its CGC, and the oil mass fraction of the oil-in-water gel emulsions could be freely adjusted between 5% and 70%. This work provides a convenient way to prepare bio-based supramolecular hydrogels and provides a new method for the application of rosin.

Bio-Based Ca2+-Selective Supramolecular Metallohydrogels with Ultra-mechanical Responsiveness, Selective Dye Adsorption, and Recycling

“…In our previous work, we reported the facile construction of bio-based supramolecular hydrogels from dehydroabietic acid for forming gel emulsions. 34 However, rosin-based supramolecular metallohydrogels and their applications in dye adsorption species have not been reported.…”

“…Song reported that an amphiphilic hydrogelator was derived from dehydroabietic acid with an oxidized amine structure and application to the preparation of gel emulsions. In our previous work, we reported the facile construction of bio-based supramolecular hydrogels from dehydroabietic acid for forming gel emulsions . However, rosin-based supramolecular metallohydrogels and their applications in dye adsorption species have not been reported.…”

Cross-linked self-healing polymers containing rosin moiety based on dynamic urea and multiple hydrogen bonds

“…These products are introduced into polymer chains to obtain network polymers with good mechanical properties and homogeneous structures. At present, the main research on rosin in the field of polymer materials includes the fabrication of light-controllable amphiphilic polymers [19], polyurethane microspheres [20,21], antibacterial coatings [22], marine antifouling coatings [23], and supramolecular hydrogels [24]. As a renewable biomass resource, rosin and its derivatives have significant research potential and application prospects in the fabrication of polymeric self-healing materials.…”