A Multicross-Linked Eutectogel with Mechanical Enhancement and Diverse Engineered Functionality Prepared Using Amino
Zhaosen Zhang1, Fei Liu2,3, Xingdong Zhang1,2
1National Engineering Research Center for Biomaterials and College of Biomedical Engineering, Sichuan University, Chengdu, Sichuan 610065, China.
ACS Applied Materials & Interfaces
|October 11, 2025
Summary
New proline-citric acid eutectogels (PAA-ProCA) overcome mechanical limitations in green materials. These adaptable eutectogels offer enhanced strength, toughness, and diverse functionalities for advanced applications.
Area of Science:
- Materials Science
- Polymer Chemistry
- Green Chemistry
Background:
- Eutectogels are promising green materials but often exhibit poor mechanical properties, limiting their use.
- Amino acid-based natural deep eutectic solvents (AANDESs) offer a sustainable route to enhance eutectogel performance.
- Developing eutectogels with improved mechanical strength and multifunctionality is crucial for broader applications.
Purpose of the Study:
- To develop novel, mechanically robust, and multifunctional eutectogels using amino acid-based deep eutectic solvents.
- To investigate the compatibility of poly(acrylic acid) (PAA) with a proline-citric acid (ProCA) deep eutectic solvent.
- To explore the tunable mechanical properties and versatile functionalities of the resulting PAA-ProCA eutectogels.
Main Methods:
- Discovery of a compatible proline-citric acid (ProCA) deep eutectic solvent.
- Preparation of poly(acrylic acid)-ProCA (PAA-ProCA) eutectogels via photopolymerization.
- Characterization of mechanical properties, including tensile strength and toughness, and evaluation of functionalities like self-adhesion and impact protection.
Main Results:
- PAA-ProCA eutectogels demonstrated tunable mechanical properties with significant enhancements in strength (43.14 MPa) and toughness (196.4 MJ/m³).
- Multinetwork structures exhibited dynamic changes and energy adsorption mechanisms, leading to improved fatigue resistance and reversible stress-whitening.
- The eutectogels displayed versatile functionalities including adjustable self-adhesion, impact protection, UV absorption, and sensing capabilities.
Conclusions:
- The PAA-ProCA eutectogels represent a significant advancement in designing high-performance, adaptive green materials.
- This work presents a novel strategy for creating multifunctional eutectogels with exceptional mechanical properties and adaptivity.
- The developed eutectogels show potential for applications requiring robust, adaptable, and sustainable materials.
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