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developing-antibacterial-nanofinishing-for-textiles-in-health-care_martin-bennink_saxion PDF

38 Pages·2016·1.47 MB·English
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Developing antibacterial nanocoatings for textiles in health care Martin Bennink1, Henk Gooijer2, Ger Brinks2 1 NanoBio research group 2 Smart Functional Materials research group Saxion University of Applied Sciences, Enschede, The Netherlands Contents - Bacterial infections in health care (the problem) - Goal of this project Synthesis of nanomaterials Implemen- Application tation in to textile practice Testing Abrasion by antibacterial wear and property washing Assessing toxicity - Conclusions and what’s next - Acknowledgements The problem - Bacterial infections are one of the most Medisch Spectrum Twente, Enschede important challenges hospitals and other health care institutions are faced with. - The chance of acquiring an infections with an hospital within the Netherlands is about 5.5 % (RIVM report 2014). - Additional costs per year related with these bacterial infections is 136 M€ (in the Netherlands) - Contamination occurs during transfer via personnel and is enhanced by bacteria growing in wounds of patients. Goal of the project Develop and apply a coating with nanomaterials on the textile that reduces the growth of bacteria. Focus is on: - Doctor’s uniform - Separation curtains - Surgery jacket Bed and cushion sheets Doctor’s uniform Separation curtains Washing cloth Bacteria in textiles Textiles Apparels, clothing Home textiles (mattresses, floor coverings, show linings) Outdoor textiles Textiles provide an excellent environment, because of their: - Large surface area - Ability to retain moisture - Additives which are a source of nutrition for bacteria (lubricants, antistatics, …) (Natural textiles are more prone to be infected with bacteria than synthetic one) Survey of compounds EU Charge Water Application Antibacterial Toxicity regulations solubility mechanism Silver Biocidal Cation 80% Medicine, Cell are lysed Genotoxic, cytotoxic, product insoluble industry and regulation home use Titanium Biocidal Anion Not UV-protection UV activated TiO2 Carcinogenic when dioxide product soluble in cremes and forms radi-cals inhaled, toxic for regulation coatings that oxidize aquatic life organic materials Zink oxide Biocidal Anion Not UV-protection Reacts with Toxic for aquatic life, product soluble in and pigment (in enzymes and when inhaled regulation water plastics, forms radicals damage to togans, ceramics) allergan Phosphotungs REACH Anion Soluble in Antibacterial, Oxidizes organic Irritant for eyes and tic acid water antitumoral, materials lungs (when inhaled) hydrate antiviral appls Silicotungstic REACH Anion Soluble in Antibacterial, Oxidizes organic Irritant for eyes and acid water antitumoral, materials lungs (when inhaled) antiviral appls Triclosan Biocidal Anion Not Desinfectant Biocide with Allergant, produces product soluble in multiple biological water dioxines. Toxic regulation water targets for aquatic life Antibacterial nanoparticles coatings Nano-silver  Antibacterial properties Sport socks Wound dressing Refridgerators Antibacterial socks 1-5 out of 100 fibrils is darker (Ag coated) BUT: Nanosilver is very difficult to firmly attach to textiles and has been shown to be harmful for aquatic environment. Only the bottom part of the sock was found to contain Ag-containing fibers. Ag is present as a continuous layer of thickness 100-200 Sport socks nm (EDX) From: Report “Nanoparticles in consumer products”, RIVM Survey of compounds EU Charge Water Application Antibacterial Toxicity regulations solubility mechanism Silver Biocidal Cation 80% Medicine, Cell are lysed Genotoxic, cytotoxic, product insoluble industry and regulation home use Titanium Biocidal Anion Not UV-protection UV activated TiO2 Carcinogenic when dioxide product soluble in cremes and forms radi-cals inhaled, toxic for regulation coatings that oxidize aquatic life organic materials Zink oxide Biocidal Anion Not UV-protection Reacts with Toxic for aquatic life, product soluble in and pigment (in enzymes and when inhaled regulation water plastics, forms radicals damage to togans, ceramics) allergan Phosphotungs REACH Anion Soluble in Antibacterial, Oxidizes organic Irritant for eyes and tic acid water antitumoral, materials lungs (when inhaled) hydrate antiviral appls Silicotungstic REACH Anion Soluble in Antibacterial, Oxidizes organic Irritant for eyes and acid water antitumoral, materials lungs (when inhaled) antiviral appls Triclosan Biocidal Anion Not Desinfectant Biocide with Allergant, produces product soluble in multiple biological water dioxines. Toxic regulation water targets for aquatic life Polyoxometalates - Polyoxometalates (POMs) are discrete anions of early transition oxides, such as molybdenum (Mo), tungsten (W) and vanadium (V) oxides. - They can have a variety of structures - In this project we use the following two polyoxotungstates: Polymeric Si oxoanions, that form a 3D network, around Si or P Silicotungstic acid Phosphotungstic acid SiW O PW O 12 40 12 40

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to textile. Testing antibacterial property. Assessing toxicity. Abrasion by . For health care applications, mostly used textiles are: . Johan Molling.
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