Preparation method of high-strength light cellulose-based bionic protective material

Abstract

The invention provides a preparation method of a high-strength light cellulose-based bionic protective material, and relates to a preparation method of a bionic protective material. The method comprises the following steps of: constructing a homogeneous cellulose molecular system by using a solvent [Bmim] Cl ionic liquid; obtaining a cellulose hydrogel base material through phase conversion, and introducing a PAAm macromolecular chain through an in-situ polymerization means; and realizing molecular configuration recombination through an ethanol solvent, so as to construct the cellulose-based functional protective material (Cel-PAAm) with high mechanical strength. Molecular dynamics simulation (MD) and density functional theory (DFT) analysis means are utilized to determine that the curling configuration of PAAm molecules is a key factor for endowing the Cel-PAAm material with strong mechanical properties. The method is a green and controllable preparation method of a cellulose-based reinforced material, and compared with other conventional preparation methods, the Cel-PAAm functional protective material has better mechanical properties and biocompatibility and has a relatively great production and application prospect.

Description

technical field [0001] The invention relates to a preparation method of a bionic protective material, in particular to a preparation method of a high-strength light-weight cellulose-based bionic protective material. Background technique [0002] Self-assembly and configuration design at the molecular level enable the material to have novel and unique properties beyond itself, and make the prepared material itself have a unique hydrogen bond network and microstructure designability, thus exhibiting strong mechanical properties , performance can be converted and many other properties. However, the current design of cellulose materials still stays at the mixing and hybridization of nanoscale dimensions, and rarely involves molecular-scale structural design and spatial configuration strategies to construct cellulose-based functional materials. [0003] The development of most reinforced materials mainly includes methods such as magnetorheological fluid, adding supercooled salt,...

AI Technical Summary

Problems solved by technology

[0003] The development of most reinforced materials mainly includes methods such as magnetorheological fluid, adding supercooled salt, mixing thermal induction factors and interface engineering construction. Although the mechanical properties of the synthesized materials have been improved, the materials prepared by the existing methods still have strength. Insufficient lifting, lack of long-term stability leading to premature material damage, poor degradability and other defects

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