The invention relates to the technical field of degradable
high polymer materials and disposable
personal care products, and discloses a preparation process of a degradable high-barrier
plastic film for a hair
dyeing shawl, and the preparation process comprises the following steps: 1, preparing
chitosan-
dopamine grafted modified
montmorillonite (CTS-DA-MMT): dispersing 5g of 20-30nm nano
montmorillonite in a 2wt%
acetic acid solution, and ultrasonically dispersing for 40 minutes by 200W; adding
dopamine hydrochloride according to the ratio of
montmorillonite to
dopamine being 1: 0.2, adjusting the pH value to 8.5 by using 1mol / L NaOH, and carrying out stirring reaction at
room temperature for 1 hour; adding
chitosan according to the ratio of montmorillonite to
chitosan being 1: 0.4, and stirring and reacting at the constant temperature of 50 DEG C for 3 hours; the pH is adjusted to 7.0 through 1 mol / L HCl,
centrifugation is carried out for 15 min at the speed of 8000 r / min, washing is carried out three times through deionized water,
vacuum drying is carried out for 8 h at the temperature of 60 DEG C, and the product is obtained. According to the preparation technology of the high-barrier
plastic film for the degradable hair
dyeing shawl, chemical
grafting (instead of physical blending) of montmorillonite-dopamine-chitosan is achieved through
catechol groups of dopamine, the problems of montmorillonite agglomeration and matrix compatibility are solved, and the degradable hair
dyeing shawl is prepared. Meanwhile, through the dynamic adhesiveness of dopamine, the problem of barrier failure under
dynamic stretching is solved.