4687

4415

كارشناسي ارشد

تكنولوژي نساجي

اصفهان: دانشگاه صنعتي اصفهان، دانشكده نساجي

1387

اصفهان، دانشگاه صنعتي اصفهان، دانشكده نساجي

ص.ع.به فارسي و انگليسي

محمد ذره بيني، محمد مرشد

داريوش عابدي

88/7/14

حسين توانايي، اكبر خدامي

مهندسي نساجي

ID4415

به فارسي و انگليسي: قابل رويت در نسخه ديجيتالي

Study of factors affecting antibacterial properties of non woven filter media Mohammad Sadegh Hooshmandpoor Mosad hooshmand@tx iut ac ir Date of Submission 13 April 2009 Textile Enginnering Department of Isfahan University of Technology Isfahan 84156 83111 Iran Degree M Sc Language Farsi Supervisor s Name M zarebini M Morshed Abstract The use of antibacterial filter media is a method employed for the removal or inactivation of pathogenic microorganisms in filteration of liquids In this work fibers with antibacterial properties for production of filter media were manufactured using a melt spinning system Polypropylene granules were blended with nanosilver masterbath having a ppm strength of 20 000 The fibers were used to make fourteen nonwoven needled filter medias using carding and needling machines The effect of parameters such as fibers fineness nanosilver content in the polymer and punch density on antibacterial properties of the filters have been investigated Additionally the effect of other parameters such as existence of silica in masterbatch and fibers distribution of nanoparticle in the polymer thickness and weight per unit area of the samples together with their air permibility were also investigated Antimicrobial tests were carried out using stable and flow methods on the exprimental samples The results showed that not only nanoparticles distribution in the polymer is relatively uniform along the axis of the fibers but also the existence of silica in the fibers increases filter eficiency It was also found that a linear regression exists between antibacterial properties and fineness of the fibers and the amount of added nanosilver it must be pointed out that fineness is the most influential factor As far as the effect of punch density is concerned it was found that unlike the above factors a nonlinear regression exists between punch density The influence of punch density on antibacterial properties of filter is considerably a lot less than that of fibers fineness or the add on percent of the masterbatch Considering the above results it can be said that the manufactured filters can be employed in a wide range of liquid filteration processes Key Words Filter Antibacterial Polypropylene Nanosilver pdfMachine A pdf writer that produces quality PDF files with ease Produce quality PDF files in seconds and preserve the integrity of your original documents Compatible across nearly all Windows platforms simply open the document you want to convert click print select the Broadgun pdfMachine printer and that s it Get yours now

محمد ذره بيني، محمد مرشد

داريوش عابدي

حسين توانايي، اكبر خدامي