Antifouling and Antimicrobial Di- and Tri-Block Copolymers
- 详细技术说明
- A series of amphiphilic semi-fluorinatedblock copolymers exhibiting anti-microbialand marine fouling resistance propertieswere developed.
- *Abstract
-
Researchersat Cornell University have developed a remarkable series of di- and tri-blockcopolymers. The newest in this series ofblock copolymers is an environmentally friendly material with dynamic surfacecharacteristics imparting anti-foulingproperties in and out of water.
In an aqueous or marine environment the surfaceexposes the hydrophilic portion ofthe polymer having poly-ethylene glycol (PEG) side chains. PEG is a polymerknown for anti-fouling properties, which prevents marine life from adhering to itssurface. When our block copolymer is dry or exposed to air, a conformationalchange in the polymer occurs and the hydrophobicfluorinated segments are exposed. The now hydrophobic surface facilitates removal of fouling organisms whichPEG didn’t prevent from adhering. In marine environments this antifoulingcoating can help improve efficiencies by reducing drag associated with thebuild-up of biological contaminants.
This class ofpolymers show not only the ability to inhibit marine fouling, by algae anddiatoms, but specific blends incorporate additional pyridinium functionalityand show nearly complete antibacterialactivity as demonstrated by studies with S. aureus.
(Above) White spots are S. aureus colonies which are flourishingon the Untreated Glass and are nearly absent on the Polymer Coated Glass.
(Above) Real worldtesting was performed using aluminum panels which were coated with ouranti-fouling polymer. After 30 days of static immersion followed by 30 days ofdynamic sea immersion, it is clearly visible that the polymer coated panels are nearly free of fouling whereas theuncoated aluminum reference panel has a thick coating beginning to form.
Potential Applications
· Coatings for:
·Marine
·Aerospace
·Automotive
·Medical
· Process and industrial equipment
· Building and construction materials
Advantages
· Environmentally friendly
(Non-Leaching)· Stable, non-restructuring
· Thin film coating easily bonds to other surfaces
· Non-wetting surface
· Non-stick, low energy, self-cleaning surface
- *Licensing
- Martin Teschlmt439@cornell.edu(607) 254-4454
- 其他
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- D.Calabrese, B. Wenning C.K. Ober Anionic Polymerization 2015 Chapter: “Block Copolymers as Antifouling and FoulingResistant Coatings” pp 881-924.
- Z. Zhou, et.al “Amphiphilic triblock copolymers with PEGylated hydrocarbon structuresas environmentally friendly marine antifouling and fouling-release coatings",Biofouling 2014, 30(5), 589-604. DOI:10.1080/08927014.2014.897335
- S. Krishnan,et.al. “Surfaces of FluorinatedPyridinium Block Copolymers with Enhanced Antibacterial Activity” Langmuir,2006, 22 (26), pp 11255–11266 DOI: 10.1021/la061384v
- S. Krishnan,et.al. “Anti-Biofouling Properties of Comblike Block Copolymers withAmphiphilic Side Chains” Langmuir, 2006, 22 (11), pp5075–5086 DOI:10.1021/la052978l
- D. Park, et.al. “Amphiphilic Surface Active Triblock Copolymers with Mixed Hydrophobicand Hydrophilic Side Chains for Tuned Marine Fouling-Release Properties”Langmuir, 2010, 26(12), 9772–9781. DOI:10.1021/la100032n
- US Patent 7,709,055 “Polymers with ethercontaining side chains and compositions thereof”
- US Patent 7,763,687 “Polymers containing quaternized nitrogen”
- US Patent 7,887,790 “Polymers and polymer coatings”
- US Patent 7,887,926 “Triblock polymers and polymer coatings”
- US Patent 8,192,843 “Polymers and polymer coatings”
- 国家/地区
- 美国
