层层组装法制备抗菌-阻燃型生物质基复合涂层  

Construction of antibacterial and flame retardant biomass-based composite coatings via layer-by-layer method

作　　者：徐群娜 赵文婷 马建中 李鹏妮 李霜茹 XU Qunna;ZHAO Wenting;MA Jianzhong;LI Pengni;LI Shuangru(College of Bioresources Chemical&Materials Engineering,Shaanxi University of Science&Technology,Xi'an 710021,Shaanxi,China;Xi'an Green Chemicals and Functional Materials Key Laboratory,Xi'an 710021,Shaanxi,China;National Demonstration Center for Experimental Light Chemistry Engineering Education,Xi'an 710021,Shaanxi,China;Tongxiang Affairs Center of Quality and Technical Supervision,Tongxiang 314500,Zhejiang,China)

机构地区：[1]陕西科技大学轻工科学与工程学院,陕西西安710021 [2]西安市绿色化学品与功能材料重点实验室,陕西西安710021 [3]轻化工程国家级实验教学示范中心,陕西西安710021 [4]桐乡市质量技术监督事务中心,浙江桐乡314500

出　　处：《精细化工》2023年第8期1710-1719,共10页Fine Chemicals

基　　金：国家自然科学基金(22078185、22278258)。

摘　　要：为了赋予皮革更多功能,提高其使用价值,以己内酰胺(CPL)改性酪素(CA)(记为CPL-CA)、壳聚糖(CS)及植酸(PA)生物质材料为原料,引入无机组分氢氧化镁(MH),采用层层组装(LBL)技术在皮革上构筑具有阻燃及抗菌性能的涂层。对构筑涂层的革样进行了FTIR、SEM及EDS表征,并对其进行了抗菌性能及阻燃性能测试。结果表明,CS的引入明显改善了涂层的抗菌性,当CS溶液质量分数为1.0%时,涂层对金黄色葡萄球菌有良好的抑菌效果。固定CPL-CA溶液,在CS溶液质量分数为1.0%、浸渍层数3层的条件下,由质量分数为1.5%MH溶液和体积分数为0.4%PA溶液制得的复合溶液构筑涂层的革样的热释放速率(HRR)峰值和热释放总量(THR)分别比未浸渍革样降低了42.31%和40.97%,表明成功制备了具有良好抗菌及阻燃性能的生物质基复合涂层。In order to impart leather with multi-functionality and improve its commercial value,composite coating with flame retardant and antibacterial properties was constructed on leather surface by layer-by-layer(LBL)method using biomass materials[caprolactam(CPL)modified casein(CA)(denoted CPL-CA),chitosan(CS),phytic acid(PA)]and inorganic component magnesium hydroxide(MH)as raw materials.The coated leather samples were then characterized by FTIR,SEM and EDS,and analyzed for their antibacterial and flame retardant properties.The results showed that,when the mass fraction of CS solution was 1.0%,the coating exhibited excellent antibacterial effect on S.aureus,indicating significant improvement in the antibacterial performance of the composite coating by CS introduction.Under the condition of mass fraction of CS solution of 1.0%and 3 impregnated layers,the peak heat release rate(HRR)and total heat release(THR)of the biomass-based composite coating prepared by MH solution with mass fraction of 1.5%and PA solution with volume fraction of 0.4%were 42.31%and 40.97%lower than those of the undipped one,respectively,which indicated that the biomass-based composite coating with good antibacterial and flame retardant was successfully prepared.

关 键 词：酪蛋白 抗菌性 阻燃性 皮革涂饰 层层组装 功能材料 

分 类 号：TS544[轻工技术与工程—皮革化学与工程] TB34[一般工业技术—材料科学与工程]