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

38 Pages·2016·1.47 MB·English

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