Epoxy vegetable oil blending modified pullulan grafted pineapple fiber packaging film and preparation method thereof

Abstract

The invention discloses an epoxy vegetable oil blending modified pullulan grafted pineapple fiber packaging film. The epoxy vegetable oil blending modified pullulan grafted pineapple fiber packaging film is prepared from the following components in parts by weight: 118 to 120 parts of pineapple leaf fibers, 5.5 to 5.8 parts of composite cellulose, 2.3 to 2.5 parts of nano magnesium oxide particles, 4.3 to 4.4 parts of citric acid, 25 to 26 parts of epoxy vegetable oil, 31 to 32 parts of pullulan, 9 to 10 parts of scolecite, 35 to 40 parts of hydroxypropyl starch, 4 to 5 parts of hydroxypropyl methylcellulose, 5 to 6 parts of polyvinyl alcohol, 9 to 10 parts of konjac glucomannan, proper amount of water and proper amount of de-ionized water. A pineapple cellulose film is prepared by combining epoxy vegetable oil blending modified pullulan with a nano-crystallized pineapple leaf cellulose solution and other components and preparing a homogeneous film solution through ultrasonic assisted emulsification and shearing; the pineapple cellulose film is degradable and realizes application of pineapple cellulose and the pullulan to the field of packaging film materials and has good air permeability, spatial structure and stretching-resisting property.

Description

technical field [0001] The invention relates to the technical field of pineapple leaf fiber packaging film, in particular to an epoxy vegetable oil 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 cleanline...

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;