ساخت ميكرونانوكپسول هاي حاوي اسانس نعناع با روش الكترواسپري و بررسي تاثير ضد ميكروبي آن ها بر روي كالاي پنبه اي

چكيده انگليسي :

Production of micro nanocapsules containing peppermint oil using electrospray method and their antimicrobial influence on cotton textiles Soraya Ghayempour s ghayempour@tx iut ac ir Date of Submission August 11 2010 Department of Textile Engineering Isfahan University of Technology Isfahan 84156 83111 Iran Degree M Sc Language Farsi Supervisor S M Mortazavi mortaza@cc iut ac ir Abstract Nanotechnology processes have recently been introduced into the textile field One of these processes involves encapsulated nanoparticles or nanoproducts known as micro nanocapsules Encapsulation technology of fragrance materials have used for different goals Fragrance oils can be protected by encapsulation process as degradable materials provided in external phase to increase their rate Textile industry is one of the mean industries related to people heath in every social and age group According to the increasing demands to comfortable and new textiles using antimicrobial finishing is very important Antimicrobial textile production has been one of the remarkable research fields in textile industry In this thesis the antimicrobial properties of micro nanocapsuled peppermint oil in sodium alginate a natural biopolymer have used to develop antimicrobial textiles for the first time Numerous methods proposed to produce these micro nanocapsules in which their details are different In this research the preparation possibility of micro nanocapsules has determined by emulsion and electrospray methods in two parts that in each one the influence of different parameters on micro nanocapsules size and formation has evaluated Alginate micro nanocapsules were characterized on structure a mean particle size distribution and morphologies by using a scanning electron microscope SEM The stability of essential oil during the encapsulation process was assessed using thin layer chromatography TLC thermogravity TG fourier transform infrared spectroscopy FT IR and Clevenger Finally the stability process of micro nanocapsules produced by microwave has done on cotton fabrics and micro nanocapsules characterization on textiles examined by FT IR spectrometry method SEM micrographs have used to check presence surface distribution and the preferred join position in textile fibers Evaluation results of micro nanocapsules show the mentioned method efficiency in oil encapsulation The investigation done in micro nanocapsules adhesion on fabrics showed that the encapsulation process is a suitable method for protecting multifunctional finishes on textiles The antimicrobial activity of the micro nanocapsules and finished fabrics was investigated by employing two methods ASTM E2149 01 Shake Flask and AATCC Test Method 100 in which 100 ability of antimicrobial activity of samples containing peppermint oil observed Examination of antimicrobial function of produced micro nanocapsules has done by using Gram negative bacteria E Coli and the Gram positive bacteria S Aureus Consequently the result of this research is obtaining a durable fragrant and antimicrobial fabric Keywords micro nanocapsules electrospray emulsion sodium alginate peppermint oil

قيم پور، ثريا

ساخت ميكرونانوكپسول هاي حاوي اسانس نعناع با روش الكترواسپري و بررسي تاثير ضد ميكروبي آن ها بر روي كالاي پنبه اي

امولسيون , سديم آلجينات