Presentation on theme: "Eco-friendly Development in Textile Finishing"— Presentation transcript:
1Eco-friendly Development in Textile Finishing Nanotechnology forEco-friendly Development inTextile FinishingPunnama Siriphannon,Yuwanda Iamphaojeen and Pratyaporn Tepmatee1Department of Chemistry, Faculty of Science2Functional Nanostructured Materials Laboratory, College of KMITL NanotechnologyKing Mongkut’s Institute of Technology Ladkrabang, Bangkok, Thailand
2Textile IndustryIn 2012, Thailand had a trade surplus of Textiles and Clothing trade, with exports accounted for 3.4% of GDP.
3Pollution from Textile Industry Textile manufacturing process high consumption of resources- fuel, chemicals, water low process efficiencygenerates a significant amount of wasteEnvironmental issues in textile industryWastewaterAir pollutionEnergy consumptionSolid and liquid wasteHazardous material management
4Eco-Friendly Textile Industry Pollution-free eco-friendly textiles have become the dominant market in the 21st century, the main products.Profitability and EnvironmentalProtectionIntegration of Productivityand Environmental ManagementSustainability andQuality of Life
5Nanotechnology for Eco-Friendly Textile Industry Fabrication and Immobilization ofNanoparticles on Cotton Fabricsby Eco-Friendly ProcessNanoporous Adsorbentsfor Dye ContainingWastewater Treatment
6+ Cotton Properties Nano ZnO Properties Fabrication and Immobilization of ZnO Nanoparticles on Cotton Fabrics by Eco-Friendly ProcessMotivation & Objective 1Cotton Properties Soft touch Easy to maintenance High water absorbencyNano ZnO Properties Antibacteria UV Protection Self-cleaning+Nano ZnO coated cottonIn the first work, we focused on an improvement of cotton fabric, which is popular natural fiber due to its soft touch, easy to maintenance and high water absorbency, producing comfort and breathable properties of cotton. However, because the high water absorption of cotton causes this fiber more susceptible to microbial attack. To overcome these drawbacks, ZnO nanocrystals were selected to modify the surface of cotton fabric in order to improve the antibacterial, UV protection and self cleaning properties, leading to the first benefit of value adding by creating new properties and improving quality of cotton using nanotechnology.Add value to cotton fabrics by creating new properties and improving quality using nanotechnology
7Poor adhesion of inorganic nanoparticles Fabrication and Immobilization of ZnO Nanoparticles on Cotton Fabrics by Eco-Friendly ProcessMotivation & Objective 2Poor adhesion of inorganic nanoparticles Performance drop after prolonged usageDevelop an effective and cost-saving technique for immoblization of nano ZnO on cotton fabrics
8Polyelectrolyte assisted immobilization Anionic polyelectrolyte Fabrication and Immobilization of ZnO Nanoparticles on Cotton Fabrics by Eco-Friendly ProcessPurposed systemPolyelectrolyte assisted immobilizationHydrothermal growthof nano ZnO on cottonnon-toxic chemicallow chemical concentrationlow treatment temperaturelow energy consumptionminimize wastePolymers whose repeating units bear an electrolyte group will dissociate in aqueous solutions, making the polymers charged.Anionic polyelectrolytePoly 4-styrenesulfonic acid(PSS)GREEN CHEMISTRY
9Preparation of cationized cotton fabrics 3-chloro-2-hydroxypropyl-trimethylammonium chlorideepoxypropyltrimethyl-ammonium chlorideCelluloseCationized cellulose
10Layer-by-Layer treatment of cationized cotton Immobilization of nano-ZnO on cotton fabricsLayer-by-Layer treatment of cationized cottonHydrothermal treatmentNH4OH 0.1 MPSS/Zn2+cottonNano-ZnOimmobilized cotton90 ºC 24 hr.cottonPSS 0.1 MDI waterZnNO36H2O0.1 M5 minLbL2,4,6 cycles
11Immobilization of nano-ZnO on cotton fabrics PSSZn OH- Zn(OH)2Zn(OH)2 ZnO + H2ONH4OHHydrothermal 90 C
13XPS spectrum of Nano ZnO immobilized cotton O(–2) in ZnO531.7 eVand eVO–H inZn(OH)2
14Number of PSS/Zn2+ layer Zn content (AAS)& UV protection propertiesSamplesNumber of PSS/Zn2+ layerZn content(ppm/g)UPFUV protectioncategory*Neat cottonn/a21GOODZnO-cot-2s257.3 4.627VERY GOODZnO-cot-4s4222.5 19.230ZnO-cot-6s6727.4 29.535* UV protection category was classified according to AS/NZS 4399: 1996
15UV-protection property AATCCUltraviolet Protection Factor (UPF)E = relative erythemal spectral effectivenessS = solar spectral irradiance (Wm−2 nm−1)T = spectral transmission of the specimenobtained from UV spectrophotometricexperiments = wavelength interval for measurements(nm) = wavelength(nm)Wavelength 280 – 400 nm
16UV protection category Effective transmission (%) UPF classification system AS/NZ 4399UPF RangeUV protection categoryEffective transmission (%)GOOD6.7 to 4.2VERY GOOD4.1 to 2.640 – 50 , 50+EXCELLENT2.5
17Antimicrobial activity ASTM E2149-01 Soaked fabric sample in 50 ml E. Coli1.5 – 3.0 x 106 cfu/mlIncubated with shaking for 24 hE.coli after soaking was plated in nutrient agar then incubated at 37 °C for 24 h and surviving cells were countedA = surviving colonies in neat cotton (CFU/ml)B = surviving colonies in nano-ZnO immobilized cotton (CFU/ml)
19Conclusion Self-assembled Nano-ZnO immobilized HydrothermalSelf-assembled Nano-ZnO immobilizedPSS/Zn2+ nanolayer cotton fabricBasic solutionThe purposed method is simple and eco-friendly using low amount of non-toxic chemicals and low energy consumption, resulting in the reduction of residual chemicals and investment cost.The nano-ZnO could effectively enhance the UV protection and antimicrobial activity of the treated cotton fabrics, improving quality and value.
20Nanoporous Adsorbents for Dye Containing Wastewater Treatment Motivation & ObjectiveDyes are regularly stable and withstand to degrade with time, sunlight and biological and chemical treatments.Dyes in wastewater can severely affect the aquatic life due to the reduction of light penetration and their toxicity.The turbidity and color create an unsightly appearance.O2
21Dye Removal Method Montmorillonite Amongst the numerous techniques of dye removal, adsorption is the procedure of choice and gives the best results as it can be used to remove different types of coloring materials.Adsorption is physico-chemical method for dye removal.Inexpensive alternative adsorbents have been developed from natural materials.MontmorilloniteA layered structure can act as host material with high sorption properties.
22Chitosan Intercalated Montmorillonite (Chi-MMT) Monolayer of chitosan in MMTAdsorbentChitosan Intercalated Montmorillonite (Chi-MMT)Bilayers of chitosan in MMTChi-MMT adsorbent showed higher adsorption capacity for cationic dye than anionic dye.Problem : Releasing of acetate couterions during adsorptionCannot regeneration by simple methodThermal stabilityMonvisade, P., and Siriphannon, P., Chitosan Intercalated Montmorillonite: Preparation, Characterization and Basic Dye Adsorption. Appl.Clay.Sci.; 2009; 42(3-4):
23Aluminium-pillared Montmorillonite (Al-MMT) AdsorbentAluminium-pillared Montmorillonite (Al-MMT)The intercalation of polynuclear hydroxy metal cations and metal cluster cations such as aluminium polyoxocation in montmorillonite affords pillared clay structure.(Al13O4(OH)24(H2O)12)7+Al13-KegginAdvantages:- relatively large pore sizehigh specific surface areagood thermal stability
24Preparation of Al-MMT Modified MMT Drying 105oC AlOH-MMT 2 ml/minSonicationAging RT 24 hr.Filter and Wash withdistilled waterDrying 105oCAlOH-MMTAl13-polyoxocationsolution2.5 g Na+- MMTin 100 ml waterXRD, XRF, FTIR,TGA, BETCalcining500oC 4hr.Al-MMT
26XRD patterns 2q = 5.00o d001 17.7 Å 2q = 4.80o d001 18.6 Å
27Gas adsorption analysis Specific surface area Na+-MMT m2/g Al-MMT m2/g3.8 nmnm
28Aluminium-pillared Montmorillonite (Al-MMT) House of card
29AdsorbatesBasic dyeAcid dyeBasic blue 66 (BB66)Acid red 91 (AR91)
30Dye adsorption Centrifugation 1 g adsorbent + 100 ml dye solution 3500 rpm10 min1 g adsorbent+100 ml dye solutionShaking 30, 60, 120 minUV-VisiblespectrophotometerBB66 l 615 nmAR91 l 519 nmStandard curveConcentrationAbsorbance
32Dye adsorption of Na+-MMT Cation exchange between Na+ and dye cationsSurface adsorptionDye_Na+Na+_
33Dye adsorption of Al-MMT The broaden pore structure with multiple pore sizes of Al-MMT facilitating the penetration of macromolecular dyes.The increases of surface area and hydroxyl content promoting the electrostatic interaction between Al-MMT adsorbent and dye molecules.Dye
34Percentage of dye removal AdsorbentAR91BB66DyeRemoval(%)Adsorption capacity (mg/g)Na+-MMT157.72914.7Al-MMT7236.29346.6Adsorption time 60 min
35ConclusionThe aluminium pillared montmorillonite adsorbents were successfully prepared by high power ultrasonic assisted synthesis and in situ intercalating the aluminium polyhydroxy cations into the interlayer spacing of MMT.Existence of aluminium pillared structure could enlarge the pore diameter and increase the specific surface area of Al-MMT, facilitating the penetration of macromolecular dyes and also electrostatically interacting with the applied dyes.
36Acknowledgements Thai government's budget for fiscal year 2011-2012 The National Nanotechnology Center (NANOTEC), Thailand