2026-10-11T15:33:13Z https://api.figshare.com/v2/oai

oai:figshare.com:article/34037148 2026-09-30T23:04:38Z category_1 category_4 category_146 category_915 category_14 category_21 category_272 category_873 category_734 portal_63 item_type_6 month_year_09_2026

Rigid–Flexible Supramolecular Polyurethane Elastomers for Efficient Photothermal Deicing Yang Wang (5921) Jingru Wang (1468909) Le Guo (320752) Yuwen Wang (175679) Bowei Che (25146948) Dong Li (212687) Chenzhengzhe Yan (19371657) Biophysics Biochemistry Space Science Physical Sciences not elsewhere classified Molecular Biology Biotechnology Environmental Sciences not elsewhere classified Chemical Sciences not elsewhere classified Biological Sciences not elsewhere classified supramolecular cooperative design strategy deliberately exploits reduced graphene oxide optimized elastomer exhibits multifunctional polyurethane elastomers linked framework introduced impart photothermal functionality homogeneous segmental associations bonding motifs derived efficient deicing materials conventional photothermal polymers combine mechanical resilience photothermal deicing performance rgo composite achieved deicing ratio mechanical robustness functional performance conventional approaches thermodynamically drives tensile strength synergistic 1d strong demand solution recasting showing promise service reliability rigid segments rigid cross results establish remaining recyclable outdoor infrastructure often suffer inherent trade identical segments healing efficiency healing ability dynamic hydrogen dmf followed carbon nanotubes adipic dihydrazide 98 %, 8195 %, 05 mpa Ice accretion on outdoor infrastructure can severely compromise operational safety and service reliability, creating a strong demand for energy-efficient deicing materials. Conventional photothermal polymers, however, often suffer from an inherent trade-off between mechanical robustness and functional performance, and many also show limited self-healing ability and poor recyclability. Here, we report a rigid–flexible polyurethane elastomer (TPEA) enabled by a supramolecular cooperative design. Distinct from conventional approaches that rely on homogeneous segmental associations, our strategy deliberately exploits the intrinsically lower binding energy between flexible and rigid segments, which thermodynamically drives the formation of mismatched intersegment contacts rather than self-association of identical segments. Dynamic hydrogen-bonding motifs derived from adipic dihydrazide (AD) were combined with a rigid cross-linked framework introduced by 2,4,6-triaminopyrimidine (TAP), thereby integrating structural stability, energy dissipation, and reversible intermolecular interactions within one network. The optimized elastomer exhibits a tensile strength of 3.05 MPa, an elongation at break of 8195%, and a healing efficiency of up to 98%, while remaining recyclable through dissolution in DMF followed by solution recasting. To further impart photothermal functionality, carbon nanotubes (CNT) and reduced graphene oxide (rGO) were incorporated to construct a synergistic 1D/2D thermally conductive network. Under 1 sun simulated irradiation, the resulting TPEA-CNT/rGO composite achieved a deicing ratio of 95.9% for a 4 mm ice layer within 20 min, showing promise for efficient active deicing applications. These results establish a practical molecular design strategy for multifunctional polyurethane elastomers that combine mechanical resilience, healability, recyclability, and photothermal deicing performance. 2026-09-30T00:00:00Z Text Journal contribution 10.1021/acsapm.6c01875.s001 https://figshare.com/articles/journal_contribution/Rigid_Flexible_Supramolecular_Polyurethane_Elastomers_for_Efficient_Photothermal_Deicing/34037148 CC BY-NC 4.0