A kind of preparation method of environment-friendly and antibacterial nanocellulose composite soybean oil-based polymer foam

Abstract

The invention discloses a method for preparing an environment-friendly and antibacterial nano-cellulose composite soybean oil-based polymer foam. The method comprises the following steps: (1) placing TEMPO oxidized nano-cellulose colloid in a polytetrafluoroethylene mould, and then placing Add nisin solution dropwise to its surface layer, form a hydrogel after standing at 4°C for 24h, then add deionized water to disperse for 5min to obtain an antibacterial microgel emulsifier; (2) add benzoyl peroxide , acetone and epoxy soybean oil acrylate are mixed uniformly at room temperature, then add antimicrobial microgel emulsifier, and emulsify at a high speed for 5min at 15000r / min to prepare soybean oil-based foaming liquid; (3) soybean oil-based The foaming solution was poured into a polytetrafluoroethylene mold and heated at 120°C for 180 minutes to foam and solidify to form an environmentally friendly and antibacterial nanocellulose composite soybean oil-based polymer foam. The process of the invention is simple, the raw material is environmentally friendly, and the product foam has high strength and good antibacterial performance, and can be used as an antibacterial buffer material.

Description

technical field [0001] The invention belongs to the technical field of preparation of functional foam materials and antibacterial packaging materials, and in particular relates to a preparation method of an environment-friendly and antibacterial nanocellulose composite soybean oil-based polymer foam. Background technique [0002] Foam material has the characteristics of light weight, heat insulation, sound absorption, shock absorption, etc., and is a kind of cushioning material widely used in modern times. At present, the commonly used foam materials mainly include expanded polystyrene, polyurethane foam, etc. Although these foam materials have many advantages, due to the problems of non-renewable raw materials, poor biocompatibility and non-degradability, etc. It will inevitably have a certain impact on the natural environment. In addition, foam materials are widely used in food packaging, medical materials, purification and filtration, etc., but bacterial contamination is...

AI Technical Summary

Problems solved by technology

However, the molding process of traditional nanocellulose polymer composite foam still needs the help of chemical blowing agent, and the decomposition of blowing agent is not completely unavoidable, resulting in the residue of chemical additives and the difficulty of controlling the foam shape.