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چكيده انگليسي :

Appli ication of Ultrason in Simultaneous Baking Desizing and Blea f nic s g aching of G Griege Co otton fabr by KM 4 ric MnO Sam maneh Karrami s ka arami@tx iut ac ir Date of Su ubmission 2010 04 20 2 D Department of Textile Engineering t E g Isf fahan Unive ersity of Tec chnology Isfahan 8415 5683111 Ir ran Degree M M Sc Languuage Farsi sor S M Mo ortazavi moSupervis ortaza@cc iut t ac irAbstract In in ndustrial text pretreatm tile ment and fin nishing proccesses mass transfer and mass trans d sport areoften ratte limiting A a result th As hese process require a relatively lo residence time large amounts ses ong eof water and chemical materials and are al energy c r s lso consuming U Ultrasound p power is a promising ptechniqu for accele ue erating mass transport in textile mate erials The coollapse of accoustic bubbl in the lesboundar layer betw ry ween the fab and the bulk fluid gives rise to convective mass transf in the bric g o ferintra yar pores rn Using KMnO4 as a powerful oxidizing agent for sim g s l multaneous b baking desizzing and blea aching ofloomstat cotton fab te brics has draawn a lot of attentions The main pu f T urpose of thi project is applying isultrasonic power in b bleaching using KMnO4 in order to re educe energy consumptio so three different y on methods were used In the first method ult s trasonic pow was appl wer lied for first step and the secondphase w done usin oxalic aci under opti was ng id imum condit tions as the same as con nventional method Inthe seco method b ond bleaching ussing KMnO4 was done sim milar to regu method and ultrason power ular nicwas util lized in sec cond stage The effect of tempera ature time a and concent tration of potassium ppermang ganate and o oxalic acid on the chem mical and physical properties of b p bleached fab bric wereinvestigaated in both methods Fi inally accordding to optimmum conditi of previo methods in third ion ousmethod ultrasonic w used in b was both steps EEventually whiteness ind tensile st w dex trength resid size dualwet ability weight l loss and FTIR of each sa R ample that was treated un w nder optimal condition in each of l nthese thr methods are compar to the sa ree s red ample which was treated in convent h d tional method Since most of the oxidizin agents hav antibacter nature also the anti ng ve rial a ibacterial pro operties of potassium ppermang ganate on the cotton samp were an e ples nalyzed It wa found that by using ul as t ltrasound power in lower temperatur by increas r re sing the tem mperature concentr ration of ox xalic acid KKMnO4 and treatment ti ime more w whiteness w weight reduc ction andshrinkag loss were obtained Ho ge owever tens strength decreased B because o lower tem sile But of mperature strength loss is less than what ha appens in coonventional method how m wever whiten ness and removal sizeis simila to regular method Ult ar trasonic application in seecond metho cause bet removal size and od tterwhitenes rather than convention methods ss n nal Becaause of reduc ction of the p prices of electtronical com mponents less loss strengt and better removal s th rsize rath than con her nventional m method appr roximately 6 10 desi 6 irable whitenness and ab bout 35 thermal energy effic ciency in eac phase ult ch trasonic pow can be u wer used as an al lternative meethod forsimultanneous baking desizing an bleaching of loomstate cotton fabr g nd g e ric Keywor rds Ultrason potassium permangan nic m nate bleachi ing desizing cotton g

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الياف , سلولز