| With the improvement of living standards,people's demand for clothing was not only confined to defend against the cold,but also would pay more attention to the clothing's special performance,such as antibacterial properties,deodorizing effect,anti-ultraviolet properties,easy-care performance and so on.Cotton fibers were the most important natural fibers in apparel industry.They had several excellent properties,for instance,moisture absorption,breathability,etc.We could provide special properties to cotton fabrics through the finishing method.These special properties contained easy-care properties,freshness effect and so on.They could not only meet the demands of consumers,but also improve the added value of the fabric.The main content of thesis included three aspects.Firstly,we studied about the choice of antimicrobial agents and antimicrobial testing method.Secondly,in order to provide the performance of formaldehyde-free easy-care and antibacterial to cotton fabric,we used poly-carboxylic acid BTCA and silver ion antimicrobial finishing agent AGP to treat the cotton fabrics.At last,we used glyoxal and ?-cyclodextrins to treat the cotton fabric to provide the performance of formaldehyde-free easy-care and freshness effect.At the same time,we studied the method of freshness testing.Firstly,five kinds of antibacterial agents were selected as finishing agents to treat the cotton fabric,respectively,including Dow Corning AEM5700 antimicrobial treatment agent,Rudolf AGP silverion antimicrobial finishing agent,laboratory-made nano silver,chitosan and glyoxal.We did a series of qualitative testing which called the method of inhibition zone,and quantitative testing after treatment.The results showed that the fabric,which treated by laboratory-made nano silver and glyoxal,had ingibition zone arouna the sample for Escherichia coll(E.coli)ana Stapnylococcus aureus(S.aureus),while the other three had no inhibition zone around the samples for E.coli and S.aureus.Then,we did quantitative testing for the fabrics,which treated by AEM5700,AGP and chitosan,respectively.The results showed that they all had certain antibacterial effect.The fabric which treated by AGP had the best antibacterial effect among these antibacterial agents.The bacterial reduction rate reached to 99.6%and 93.9%for S.aureus and E.coli,respectively.The results suggested that the diffusion of antimicrobial agent laboratory-made nano silver and glyoxal were suitable for the method of inhibition zone to test,while the dissolution of antimicrobial agent was suitable for quantitative testing.Then this study set up a stable antibacterial test method in the laboratory according to the standard of AATCC90-2011,which called antibacterial activity assessment of textile materials:agar plate method and AATCC100-2009,which called assessment of antibacterial finish on textile material,and the antibacterial method of UC Davis's textile laboratory.Secondly,in order to provide easy-care and antibacterial properties to cotton fabrics,the study selected AGP,which had good antibacterial property,and easy-care finishing agent BTCA to treat the cotton fabrics.The study studied the treatment process conditions through the experiment.The concentration of easy-care finishing agent BTCA was 80g·L-1,antibacterial agent was AGP 20g·L-1,catalyst HD-MP was 30g·L-1,curing conditions were 160?for 3min.Under the optimum process conditions,wrinkle resistance angle of cotton fabrics reached to 266.4°,warp tear strength retention rate was 67.84%,weft tear strength retention rate was 66.19%,whiteness index were 67.20and the bacterial reduction rate reached to 97.42%and 80.50%for S.aureus and E.coli,respectively.After washing once,the bacterial reduction rate reached to 70.81%and 50.12%for S.aureus and E.coli,respectivelyFinally,in order to provide easy-care and freshness properties to cotton fabrics,the study selected BTCA and deodorant ?-cyclodextrins(?-CDs),glyoxal and ?-CDs to treat the cotton fabrics,respectively.Then the study did some measurements for finished fabrics,such as easy-care performance and freshness effect,which was called the ammonia absorption value and phenolphthalein color-developing method to determine the content of ?-CDs.But the results showed that it couldn't characterize the freshness effect of ?-CDs accurately if BTCA and glyoxal existed.Therefore,the study developed an indirectly method to characterize the freshness effect of finished fabrics through looking over references and experimental verification.This method was called phenolphthalein color-developing method to determine the content of?-CDs,which grafted onto cotton fabrics.But the results showed that cotton fabrics,which treated by BTC A and ?-CDs,were not suitable for phenolphthalein color-developing method to determine the content of ?-CDs.While fabrics that treated by glyoxal and ?-CDs could use this test method.So the research selected glyoxal and?-CDs to treat fabrics and determined the optimum process conditions through the experiment.The concentration of easy-care finishing agent glyoxal was 120g·L-1,deodorant ?-CDs was 20g L-1,catalyst MgCl2·6H2Owas 30g L-1,curing conditions were 130? for 3min.Under the optimum process conditions,wrinkle resistance angle of cotton fabrics reached to 238.0°,tear strength retention rate was 58.61%,whiteness index were 80.15 and the content of ?-CDs,which grafted onto fabrics,reached to 8231.33?g·g-1. |
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