Sea squirt cellulose blending modified pullulan-grafted pineapple fiber packaging film and preparation method thereof

Abstract

The invention discloses a sea squirt cellulose blending modified pullulan-grafted pineapple fiber packaging film. The packaging film is prepared from, by weight, 115-120 parts of pineapple leaf fiber, 5.6-6 parts of composite cellulase, 2.8-3 parts of nanometer magnesia particles, 4.3-4.4 parts of citric acid, 18-19 parts of sea squirt cellulose, 21-22 parts of pullulan, 4-5 parts of carbon nanotube-TiO2 composite material, 5-6 parts of polygonum cuspidatum extract, 11-12 parts of bamboo fiber, 17-18 parts of superfine starch, 4-5 parts of glyceryl stearate, 2-3 parts of kappa carrageenan, an appropriate amount of water and an appropriate amount of deionized water. According to the packaging film, the pullulan which is grafted with the carbon nanotube-TiO2 composite material and subjected to blending modification of sea squirt cellulose is adopted for combining a nanosized pineapple leaf cellulose solution and other ingredients, all the materials are subjected to ultrasonic-assisted emulsifying shearing to prepare a homogeneous film solution which is used for preparing the pineapple cellulose film, and the pineapple cellulose film has certain antibacterial and light degradation properties and good air permeability, stretching resistance and fracture resistance.

Description

Technical field [0001] The present invention relates to the technical field of pineapple leaf fiber packaging films, and in particular to a pineapple fiber packaging film grafted with pineapple fiber by ascidian cellulose blending and modified pullulan. Background technique [0002] Using cellulose as the raw material, the preparation of polymer membrane materials with different properties plays an important role in the fields of medicine, biology, food and medicine, and has become a current research hotspot. my country produces a large number of pineapples every year. Pineapple leaf fiber has antibacterial, deodorant and other health care effects. The use of pineapple leaf fiber to prepare polymer membrane materials has great development prospects. The fiber macromolecules of the pineapple leaf fiber crystalline curve are arranged neatly and regularly, and the polyhydroxy structure and strong hydrogen bonding of the fiber molecules make the cleanliness and orientation higher, an...

AI Technical Summary

Problems solved by technology

Pullulan is a colorless, tasteless, and odorless polymer substance, which is edible and biodegradable, and has good film-forming properties. The film made has good gas and water barrier properties, but pullulan The molecular chain contains a large number of hydrophilic groups, which can be combined with other fiber materials to prepare fiber films, but these fiber films are soluble in water, which limits their application in some packaging films;