Research on preparation technology of animal skin intrinsic multifunctional packaging material

Abstract

High-end leather packaging material safe, environmentally friendly, and has a good market prospect. It is an interesting technology to solve the intrinsic functionalization of skin collagen packaging materials. Nano-Hydroxyapatite (HA) precursors solution with a specific 1.67 calcium to phosphorus ratio (Ca/P) were infiltrated into the three-dimensional collagen network matrix (3DCM) in situ growth based on goat skin pretreated with glutaraldehyde and the HAG-3DCM was obtained. After compression, a transparent film HAG-3DCM-was formed. Structural and functional characterization showed that the HAG-3DCM-CM film has good comprehensive performance, such as the tensile strength increased to 67 mPa from 28 mPa, the bending resistance increased from 5 cycles to 50 cycles and the swelling degree from 55% to 12%. HA disperses and fixes the three-dimensional collagen network matrix (3DCM) fibers, improves its stability against humidity and heat, and the thermal conductivity changed from 0.72 W/(K•m) to 0.65 W/(K•m). HAG-3DCM has a relatively high limiting oxygen index of 26.5%. This study demonstrates a new approach for preparing animal skin packaging materials with new application value.