Construction of Poly(hydrophobic deep eutectic solvent)/Ethylcellulose Composite Films for Green Recyclable Tapes

Abstract

Constructing green recyclable cellulose-based tapes with high transparency, mechanical robustness, and strong wet adhesion using natural components is highly desirable but challenging. Herein, novel cellulose-based self-adhesive tapes were reported by coating a polymerizable hydrophobic deep eutectic solvent (DES) on ethylcellulose followed by photopolymerization. The prepared ethylcellulose-based self-adhesive tape (ECSAT) exhibited an optical transmittance of up to ∼88% and could provide strong adhesion by interfacial intermolecular interactions without obstructing information. Due to the hydrophobic nature of the overall structure, ECSAT does not exhibit significant adhesive strength and mechanical degradation under water, acid, and alkali environments. Notably, ECSAT can be completely dissolved in the resultant DES and furthermore reused as a self-adhesive coating. The recycled ECSAT still maintained good optical transparency, mechanical strength, and wet adhesion. We believe that ECSATs with all-around performances have a wide range of applications in packaging and other engineering fields.

Supramolecular covalent cellulose-based bioplastics with high transparency, hydrophobicity, ionic conductivity, mechanical robustness, and recyclability

“…Deep eutectic solvents (DESs) have attracted much attention since they were first reported in 2003. 25–29 DESs usually consist of hydrogen bond donors and acceptors, and the hydrogen bonding between the components reduces the melting point of the mixture, resulting in a clear and transparent state at room temperature. DESs can be used to regulate the overall physical and chemical properties of materials by changing the type of hydrogen bond donor and acceptor or by varying the molar ratio of the two.…”

High-Performance Flexible Ionically Conductive Superhydrophobic Papers via Deep Eutectic Polymer-Enhanced Interfacial Interactions

“…Hydrophobic DESs (HDESs) were first proposed in 2015 . HDES is often used for the extraction of natural plant components and even after mixing with water, a two-phase separation interface is formed, resulting in high component separation and extraction efficiency. − Given its excellent hydrophobic performance, HDES has also been introduced into synthetic materials to enhance overall hydrophobicity, antimicrobial properties, etc. − Our group has previously synthesized a series of water-insensitive functional materials using HDES, and the efficient dynamic interactions between the components endowed them with good underwater self-adhesion, self-healing, and sensing performance. − Therefore, it would be highly desirable to utilize the strong interfacial interactions and multifunctionality of HDES to construct superhydrophobic papers with a comprehensive performance.…”

Formation of Self-Healing Granular Eutectogels through Jammed Carbopol Microgels in Supercooled Deep Eutectic Solvent

“…Deep eutectic solvents (DESs) are eutectic mixtures commonly prepared using two or more substances, which consist of hydrogen bond donors (HBD) and hydrogen bond acceptors (HBA). − Most of the DESs contain one ionic species and are dominated by strong hydrogen bonding interactions, rendering them hydrophilic. − For example, Type III DES is a mixture of quaternary ammonium salt and a hydrogen bond donor. , DESs are nontoxic or have low toxicity, and they are cost-effective, easy to prepare, and biodegradable in nature. , Therefore, DESs can serve as good alternative solvents by replacing toxic and volatile organic solvents to reduce the environmental burden. Additionally, DESs are noteworthy green solvents due to their unique physical properties, including conductivity and surface tension. , Due to these properties, DESs are applicable in various fields such as catalysts, electrochemistry, and many industrial applications. , Specific examples include green gold separation, green self-adhesive tapes, and green and efficient cryopreservation …”