Acorn starch blend modified pullulan-grafted pineapple fiber packaging film and preparation method thereof

Abstract

The invention discloses an acorn starch blend modified pullulan-grafted pineapple fiber packaging film, comprising the following components according to parts by weight: 135-140 parts of pineapple leaf fiber, 6.5-7 parts of composite cellulase, 3.2-3.5 parts of nano magnesia particles, 4.5-5 parts of citric acid, 21-22 parts of acorn starch, 34-35 parts of pullulan, 4-5 parts of graphene oxide, 34-35 parts of corn phospholipid di-starch, 4-5 parts of hydrogenated rosin oil, 5-6 parts of water-soluble glucose, 3-4 parts of cellulose acetate butyrate, 2.5-3 parts of ferric stearate, suitable water and suitable deionized water. The graphene oxide grafted acorn starch blend modified pullulan is combined with nano pineapple leaf cellulose solution and other ingredients and is subjected to ultrasonic assisted emulsification and shearing to prepare homogeneous film solution so as to prepare the pineapple cellulose film, and the film has the advantages of good foldability and barrier performance, good tension resistance, good degradability, zero pollution and the like.

Description

technical field [0001] The invention relates to the technical field of pineapple leaf fiber packaging film, in particular to an acorn starch blended modified pullulan polysaccharide grafted pineapple fiber packaging film and a preparation method thereof. Background technique [0002] Using cellulose as a 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 health effects such as antibacterial and deodorizing. The use of pineapple leaf fiber to prepare polymer membrane materials has great development prospects. The fiber macromolecules of the pineapple leaf fiber crystalline koji are arranged neatly and regularly, and the polyhydroxy structure and strong hydrogen bonding of the fiber molecules make it have a high degree of cleanliness and ...

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;