| abstract |
The invention discloses a preparation method of antibacterial toughened PS plastic, wherein the content of plant extract in the PS plastic is 0.1-5%, and the preparation method comprises the steps of preparation of the plant extract, preparation of plant functional master batch, primary mixing, secondary mixing and extrusion molding; in the preparation of the plant extract, the mixing mass ratio of water, chitin and plant juice is 8-10: 3-5: 1; the addition of the seaweed gel accounts for 0.5-0.8% of the total weight, in addition, the antibacterial toughened PS plastic prepared by the invention adopts natural active antibacterial components, and the total migration rate of migrates in the plastic is reduced to 10-22 mug/kg through modification treatment, the antibacterial rate can reach 98.0-99.5% for common staphylococcus aureus, escherichia coli and candida albicans, and meanwhile, the antibacterial toughened PS plastic is excellent in mechanical property and high in thermal deformation temperature, and is an excellent antibacterial toughened PS plastic material. |