Layered Double Hydroxide-Polyaniline Nanofibers in Lightweight Aerogels for Bioinspired Flame-Retardant Wood

Abstract

An increase of the stability of wood in fire is pivotal for its revival as a construction material. Nanotechnology exemplified by surface coating and impregnation has been developed to implement flame-retardant wood with arguable success. Inspired by the design principle of biological cellular structure, we introduced aerogels consisting of layered double hydroxide-polyaniline core–shell nanofibers in wood compartments. The impregnation of a lightweight flame-retardant network integrated the composite wood with excellent nonflammability. We demonstrate that this bioinspired design principle integrating flame-retardancy with the inherent merits of wood can be extended for the development of wood-based, lightweight hybrids with durability and multifunctionality.

Hollow Superstructure In Situ Assembled by Single‐Layer Janus Nanospheres toward Electromagnetic Shielding Flame‐Retardant Polyurea Composites

“…This provides a theoretical basis for PANI as char source to play a flame-retardant role in the condensed phase and gas diluent in the gas phase. [8][9][10] In summary, PANI takes into account both conductivity and flame-retardant performance, which can effectively solve the safety problems in electronic products. He et al [11] deposited PANI on the surface of MXene and introduced black phosphorus to prepare a resistive conductive waterborne polyurethane (WPU) composite with an isolation structure by hot pressing method.…”

“…This provides a theoretical basis for PANI as char source to play a flame‐retardant role in the condensed phase and gas diluent in the gas phase. [ 8–10 ] In summary, PANI takes into account both conductivity and flame‐retardant performance, which can effectively solve the safety problems in electronic products. He et al.…”

Incorporation of Photo- and Thermoresponsive N-Salicylidene Aniline Derivatives into Cobalt and Zinc Layered Hydroxides

“…Layered compounds represent prototypical models for such hybridization. − Indeed, such materials are ideal candidates to facilitate hybridization by hosting a variety of organic compounds in their interlayer space via versatile chemical routes. Among layered materials, layered double hydroxides (LDHs) with functional organic compounds have been extensively explored for catalysis, , flame retardancy, photovoltaics, , CO 2 capture, drug delivery, , electrode materials, , combining photochromism and magnetism, , etc . However, despite being relatively easy to synthesize, hybrid LDHs present weak bonds between the organic intercalants and the inorganic host, which somehow limits the possibility of synergy between the properties of the two subnetworks via through-space interactions.…”