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Updated: Oct 1, 2026
Microfluidic Fabrication of Polymeric and Biohybrid Fibers with Predesigned Size and Shape
Published on: January 8, 2014
Mechanically Tunable, Ultraviolet-Shielding, and Recyclable Smart Elastomers for Information Encryption via
Xuwen Li1, Ting Liu1, Yinglin Chen2
1State Key Laboratory of Fine Chemicals, Department of Polymer Science and Engineering, Liaoning key Laboratory of Polymer Science and Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian116024, China.
Abstract:
Styrene-b-butadiene-b-styrene (SBS) triblock copolymers represent a cost-effective, industrially mature candidate for smart elastomers, yet their weak physical cross-linking and poor UV stability hinder their utility in smart applications. Herein, multicomponent dynamic covalent photoresponsive elastomers are fabricated through Diels-Alder (D-A) chemistry, utilizing furan-functionalized SBS (SBS-Fu) cross-linked with maleimide-modified tetraphenylethylene (TPEDMI) and/or cellulose-based maleimide (ECMI). Synergistic optimization of composition and structure endows SBS-10Fu/TPEDMI10% with optimal mechanical properties, featuring an elongation of 820%, a tensile strength of 27.6 MPa, and a toughness of 83.1 MJ/m3. By integrating the aggregation-induced emission (AIE) of TPE, the photoinduced electron transfer (PET) effect of TPEDMI, and the thermoreversibility of D-A adducts, the resulting materials exhibit temperature/photoresponsive fluorescence modulation. The obtained over 99% UV-shielding efficiency can suppress the undesirable TPE photocyclization, thereby enabling information writing and erasing. When combined with favorable shape memory (Rf = 99.4%, Rr = 99.7%), a dual-mode encryption platform is further achieved. This study presents a comprehensive design framework for multifunctional elastomers targeting information encryption and smart systems.
