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Qunna Xu,Zhongxue Bai,Jianzhong Ma,Yuxi Yang,Mengchen Huang 한국공업화학회 2021 Journal of Industrial and Engineering Chemistry Vol.100 No.-
Currently the development and application of leather are strongly limited by the peculiar smells of theleather itself and the chemical residues in the leather. However, traditionalfinishing materials containingessences have a short release period, but also weaken the mechanical properties of the coating. Herein,wefirst report a route of crafting essence controlled releasing coatings as leatherfinishes comprisingzein–sodium alginate microcapsules loaded with Artemisia argyi essence (AAE@Z-SMs) and caseinmodified by caprolactam (Ca-Cpl), of which AAE@Z-SMs was prepared by anti-solvent precipitationtechnique before physically blended with Ca-Cpl to prepare composite coating. The results showed thatthe average particle size of AAE@Z-SMs was about 5.7 mm, and the accumulative release rate of essence inAAE@Z-SMs was 48.3% after continuous release for 120 h. Besides, the AAE@Z-SMs+Ca-Cplfilm istransparent and has goodflexibility, with pores and microspheres uniformly distributed inside. Moreover, the inhibition zones of the leather samplesfinished by AAE@Z-SMs+Ca-Cpl against Escherichiacoli (E. coli) (1st d) and Staphylococcus aureus (S. aureus) (2nd d) were 2.6 cm and 4.2 cm respectively,which hardly changed after continuing culture for 2 days. Moreover, expected sanitary, mechanical andantibacterial properties of the leatherfinished could be given by AAE@Z-SMs based composites. Thisstudy provides a feasible way to prepare composite coating materials with functionality based on naturalprotein, polysaccharide and plant essence.