Synthesis of temperature- and humidity-induced dual stimulation film PU-PNIPAmn and its independent film formation as a smart window application† † Electronic supplementary information (ESI) available. See DOI: https://doi.org/10.1039/d2ra08052d

ABSTRACT: Dynamic windows, which switch between transparent and opaque states as the temperature changes, can be applied in buildings to reduce building energy consumption. Poly(N-isopropylacrylamide) (PNIPAm) is the most studied thermochromic hydrogel for climate-resilient smart window applications. In addition to its poor mechanical properties and low reaction rate, the PNIPAm hydrogel must be sandwiched between two pieces of glass to form an interlayer in practical applications. Here, durable PU-PNIPAmn copolymers for smart windows were synthesized by reacting the synthesized poly-NIPAm diols with isocyanate (–NCO) monomer, which greatly improved the mechanical properties of the hydrogel and it was able to form a film alone. These temperature-sensitive films can switch between transparent (>80% t

SUBMITTER: Tian J 

PROVIDER: S-EPMC10020989 | biostudies-literature | 2023 Mar

REPOSITORIES: biostudies-literature