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ID:33357161
大小:1.91 MB
页数:58页
时间:2019-02-25
《凹凸棒石载铜(银)抗菌剂的研制及性能研究》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、凹凸棒石载铜(银)抗菌剂的研制及性能研究。摘要本文对以凹凸棒石粘土为载体的银、铜型无机抗菌剂的制备工艺及其性能进行了试验和研究。制备工艺试验研究结果表明:1、天然凹凸棒石粘土需经过提纯处理方可以作为抗菌剂I级载体。2、湿法酸活化法可增加凹凸棒石粘土的金属离子负载量,同时提高凹凸棒石的白度,使之成为优异的II级载体。3、抗菌金属离子加载的较佳合成工艺为:载铜时以<200m目的凹凸棒石粘土与0.15mol/L的铜氨浸渍溶液1:20固液比在90。C水浴中处理6h,操作压力保持在0.04~O.02Mpa之间:载银时以<200m目的凹凸棒石粘土与0.03mot/t的银氨浸渍溶液1:2
2、0固液比在60"C下处理5h,操作压力保持在0.04~O.02Mpa之间,同时注意避光操作。性能研究表明:l、凹凸棒石载铜(银)无机抗菌剂对大肠杆菌和金黄色葡萄球菌均具有很强的杀灭能力,2、载铜、载银抗菌剂在静水中具有优良的缓释性能。3、载铜抗菌剂粉体的耐光性比载银抗菌剂粉体的好,但载银抗菌剂分散在蒸馏水中并滴加氨水时90天内也未见明显变色。综合原子吸收分光光度计分析、xRD分析和红外光谱分析,认为所合成的凹凸棒石载铜(银)抗菌剂中,铜、银是以离子形式存在的,而载体仍然保持原有的晶体结构,凹凸棒石特有的优异性能(胶体性、吸附性)也未有明显改变。关键词:无机抗菌剂,载铜抗菌剂
3、,载银抗菌剂,凹凸棒石,离子吸附,抗菌作用ResearchofCu—carrying(Ag—carrying)AttapulgiteInorganicAntibacterialAgentandThePropertiesAbstractTheresearchesabouttheCu—carryingantibacterialagentsandAg·carryingantibacterialagentsbyusingattaulgiteasthecarrierweredoneinthisthesis.Theresultsshowedthat:1.TobeusedastheIca
4、rrier,crudeattapulgiteshouldbepurified,2.BeingtreatedbyHCIacidsolution,theattapulgitewasturnedimotheIIcarrierwithhigherabsorbingability.andcouldalsobebleached.3:ThebetterprocessconditionsforCu·carryingwasthattheIIcarrierwasdippingintothe0,15mol/Lcopperionssolutionina90"Cwaterbathfor6hoursu
5、nderthepressureof0.04~O.02Mpa.ThebetterprocessforAg—carryingwasthattheIIcarrierwasdippingintotheO.03mol/Lsilverionssolutionina60Vwaterbathfor5hoursunderthepressureof004~O.02Mpa.’Propertiesresearchshowed:1.Themadeinorganicantibacterialagentswereefficaciousforbacilluscoliandstaphylococcalbac
6、teria.2.Instaticwater.theantibacterialagentscouldbeslow-releasedwell.3.TheCu—carryingantibacterialagentpowderhadbetterlightstabilitythanAg—carryingagentpowder.XRD,infraredanalysisandatomicabsorptionspectrophotometerresultsshowedthat,thecopperandsilverexistedintheformofionsintheinorganicant
7、ibacterialagents,thecarrierretainedtheoriginalcrystalstructureofattapulgite,andotherabilitjeswereStillremained.Keywords:inorganicantibacterialagent,Cu—carryingantibacterialagent,Ag—carryingantibacterial,attapulgite,ionabsorption,antibacterialaction合肥工业大学本论文经答辩
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