化学与化学工程紫外光接枝聚丙烯膜的表面改性研究

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1、在紫外光照射环境中，以聚丙烯薄膜为基材，采用二苯甲酮作为实验光敏剂媒介，实现N,N—二甲基十四烷基对乙烯基节基氯化钱的成功接枝，同时在实验中重点分析溶剂浓度、光照时间及光敏剂的浓度对反应结果的影响程度；确定本反应的最佳实现条件,即光照吋间1.5min＞光敏剂浓度0.20g/mL＞溶剂浓度0.20g/mL^接枝率为17.00pg/mm2o然后通过相应的XPS、SEM等技术测试，对接枝后的基材表面的物化特性进行分析，确定接枝反应的实际效果。相关测试结果充分证明：本文设计的接枝方案完全可行；通过抑菌圈法和TTC活性实验得出：季镀盐单体具

2、有快速有效抑制金黄色葡萄球菌和大肠杆菌的繁殖和活性的功能。在单体抗菌性实验的基础上，木文提出了多酸与季鞍盐复合双活性中心抗菌剂，通过紫外光接枝反应附着到聚丙烯材质表面层，实现一种全新的表层抗菌性材料组合，并通过同等条件的测试技术进行新产物的物化特征表征，并与季胺盐单体的表征结果进行比对，结果表明：双活性中心抗菌剂比季钱盐单体稳定，且抑菌能力更强。关键词：聚丙烯膜；紫外光接枝；杂多酸季镀盐；抗菌性AbstractUndertheenvironmentwithultravioletlight,weusebenzophenoneasth

3、emediumofphotosensitizerintheexperimentbasedonpolypropylenefilm,toachievesuccessstemgraftingofdimethylmyristylandvinylbenzylammoniumchloride.Inthemeanwhile,wefocusesontheanalysisoftheinfluenceextentofsolventconcentration,lengthenofthelightandphotosensitizerconcentrati

4、onintheexperiment.Theoptimalconditionsare:thelengthoflight1.5min,photosensitizerconcentration0.20g/mL,solventconcentration0.20g/mL.Thenweanalyzethephysicochemicalcharactersonthesurfaceofbasematerialafterstemgrafting,toconfirmtheactualeffectsthroughXPS,SEMandsoon.There

5、levanttestingresultprovedthattheplanofstemgraftingdesignedwasfeasibleinthispaper.TheresultsofbacteriostaticcirclemethodandTTCshowedthatitcanbegraftedtothesurfaceofpolypropylenematerial.Underthiscondition,thegeneratedquaternaryammoniumsaltcancontrolbreedingandactivityo

6、fstaphylococcusaureusandescherichiacoliefficientlyandpromptly.Onabasisofthemonomerantibacterialexperiment,thispaperproposedthatpolyacidandquaternaryammoniumsaltbelongtodualactiveantibacterialmaterials.Itcanachieveabrand-newsurfaceantibacterialmaterialcombinationthroug

7、hthereactionofultravioletlightstemgraftingthatstickstothesurfaceofpolypropylenematerial,andmakecomparisonbetweenthecharacterresultofquaternaryammoniumsaltmonomerandthenewcreatedmaterialthroughthosemeasuringandtestingtechniquesinthesimilarcondition.Theresultsshowthatth

8、edoubleactiveantimicrobialagenthasgoodstabilityandantibacterialabilitythanthequaternaryammoniumsaltmonome.Keywords:polypropy