SEAWEEDS IN TEXTILES, PACKAGING AND PLASTICStricia.centexbel.be/file/8y29eqhzu64v/SeaRefinery... ·...
Transcript of SEAWEEDS IN TEXTILES, PACKAGING AND PLASTICStricia.centexbel.be/file/8y29eqhzu64v/SeaRefinery... ·...
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SEAWEEDS IN TEXTILES, PACKAGING AND PLASTICS
SeaRefinery, 27 June 2017, Cork
David De Smet
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• Research
• Commercial applications
• Our interests
• Conclusions
OUTLINE
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• Research
• Commercial applications
• Our interests
• Conclusions
OUTLINE
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Blend with thermoplastic starch and glycerin • Decreases granular structure of
starch => Plasticising effect • Increase in elongation at break and
impact resistance • Decrease in elastic properties
ALGINATE
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Microbeads - extrusion • Alginate solution is extruded
through syringe needle into a Ca2+ solution
• Size: ~ 1000 µm, depends of diameter of needle
• Especially for drug delivery
ALGINATE
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Microbeads - emulsion • Emulsifying alginate solution in oil
containing CaCO3
• Size: ~ 2-25 µm, depends of agitation speed and emulsifier
• Especially for drug delivery
ALGINATE
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Basis for plastics • Agar plasticity project
(http://www.kosuke-araki.com/agar-plasticity-2015)
• 3 material experiments 1. pure agar powder
2. combining agar powder with extracted red algae fibre
3. mixing agar powder with shell ash
AGAR
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SeaColors project (http://www.seacolors.eu/index.php/en/) • Focus on dyes out of micro and
macro algae for textiles
PIGMENTS
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Blauwe keten • Focus on cultivation of micro algae
(Spirulina) which contains fycocyanin dye and application
• Applications: textile, paint, paper,…
PIGMENTS
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PlantPack • Blended seaweed extracts with
starch (derivatives) to be applied for paper packaging
• Paper and paperboard with enhanced barrier properties
• Water and grease resistant coatings
SEAWEED FOOD PACKAGING
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• Research
• Commercial applications
• Our interests
• Conclusions
OUTLINE
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Wound dressing • Haemostatic properties (highly
absorbent) • Can be modified with Ag • Many products: Algisite M,
Melgisorb, Nu-Derm Alginate,…
ALGINATE PATCHES
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Viscosity modifier • Dye pastes in textile and printing
industry • Color yield much higher compared
to traditional thickeners • Also applicable for coatings • Other seaweed polysaccharides can
be used e.g. carrageenan
ALGINATE
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• Cellulose fiber serves as a host for the seaweed
• Lyocell process (Eucalyptus fiber) • Applications: mainly clothing and
home textiles
SEACELL
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ALGENT, a division of ALGIX, has a mobile algae harvesting platform using dissolved air flotation to separate algae biomass from water.
ALGIX
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Solaplast resin grades • Algae loading: 45-55% • PP, PE, PLA, EVA, PS and
polybutylene adipate terephthalate • Injection molding, sheet extrusion,
blown film and thermoforming
ALGIX
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• Capable of producing a rigid material made from 100% based industrial waste from brown seaweeds
• Seaweed types cultivated by Algopack® come from sources such as aquaculture farms
ALGOPACK
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• Additive in standard polymer • Brown granules (can be mass dyed) • Extrusion, thermoforming and
injection molding
ALGOBLEND
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• Research
• Commercial applications
• Our interests
• Conclusions
OUTLINE
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UV protection • Phlorotannins and mycosporine-like
amino acids are UV absorbers • Algae closer to water surface have
more UV absorbers • Applying phlorotannins in coating
to protect textile from UV
OUR INTERESTS
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Antimicrobial properties • Biocides for textile: mainly
quaternary ammonia compounds and silver
• Tendancy for green products • Fucoidan, laminarin,… are reported
as antibacterial products
OUR INTERESTS
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Seaweed fibres • 100% seaweed derived textile • Melt extrusion not possible • Different processes are being
evaluated
OUR INTERESTS
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• Research
• Commercial applications
• Conclusions
OUTLINE
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• Research in many areas
• Not many commercial products for packaging and plastics
CONCLUSIONS
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Thanks to funding agencies of Denmark, Flanders, Iceland, Ireland and Norway & ERA-MBT Joint Call Secretariat for financing and supporting the project
ACKNOWLEDGEMENT