The invention belongs to the technical field of intelligent controlled-release antibacterial packaging, and particularly relates to a double-sided heterostructure
humidity triggering fresh-keeping pad based on the MOFs confinement effect and a preparation method and application of the double-sided heterostructure
humidity triggering fresh-keeping pad. According to the design of the fresh-keeping pad, high-sensitivity sensing of microenvironment
humidity fluctuation and intelligent reversible and accurate
controlled release of active ingredients are achieved, and the long-term stability of the active ingredients is remarkably improved. A double-sided heterogeneous
fiber membrane design is adopted, and a stable
hydrogen bond and physical cross-linked network is constructed by utilizing the interface complementary characteristic of different
fiber layers, so that the material is endowed with excellent reversible swelling-shrinking capability in a wide humidity range; the
structure collapse easily caused by a single material is effectively avoided, the problem of
active ingredient explosive release caused by the
structure collapse is thoroughly solved, and the
repeatability and long-term stability of intelligent response are remarkably improved; due to the heterostructure design, one-way efficient transmission of water is ensured, water management is optimized, the overall fresh-keeping performance is further improved, and wide application prospects are achieved.