抗菌涂料OC-Ly-ADMH-Cl/Cu2+的制备和应用

Preparation and application of antibacterial pigment OC-Ly-ADMH-Cl/Cu2+

用胺乙基海因(ADMH)、赖氨酸(Lysine)和氧化微晶纤维素(OC)为原料,制备卤胺前驱体OC-Ly-ADMH。该前驱体吸附铜离子(Cu^2+)后,经过氯化,可以得到卤胺与Cu^2+的复合抗菌涂料。对抗菌涂料进行红外光谱和元素能谱分析,并对抗菌涂料中的Cu^2+含量和氯含量储存稳定性,以及印花后棉织物氯含量的水洗稳定性以及抗菌性能进行了测试。优化工艺为:颜料9%,黏合剂30%,增稠剂4%,尿素5%,焙烘温度140焙烘时间5min,刮印次数2次;在卤胺以及Cu^2+的协同作用下,处理后棉织物在60min内对金黄葡萄球菌和大肠埃希菌O157:H7的抑制率分别为100%和99.99%。

A/-halamine precursor OC-Ly-ADMH is prepared with aminoethyl hydantoin (ADMH),lysine (Lysine) and oxidized microcrystalline cellulose (OC) as raw materials.After adsorbing copper ion (Cu^2+) and chlorinating the precursor,halogenated amine and Cu^2+ composite antimicrobial coatings can be obtained.Infrared spectrum and elemental energy spectrum analysis are carried out for characterization of the antimicrobial coatings.The Cu^2+ content in the antimicrobial coatings,the storage stability of chlorine content,the washing stability of chlorine content in cotton fabric after printing and the antimicrobial properties are tested.The optimum process is defined as follows: pigments 9%,adhesives 30%,thickeners 4%,urea 5%,baking temperature 140 ℃,baking time 5 min and scraping printing 2 times.Under the synergistic action of halogenamine and Cu^2+ in 60 min,the inhibition rates to Staphylococcus aureus and to Escherichia coli O157:H7 are 100% and 99.99%,respectively.