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AssigneeCelluforce Inc.
InventorsZengqian SHI, Juntao TANG, Kam Chiu TAM, Richard BERRY
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The present disclosure relates to use of polydopamine (PD) coated cellulose nanocrystals (CNCs) as template for further conjugation of functional oligomers (amines, carboxylic acids etc.) and the immobilization of various types of CNC hybrid nanomaterial nanoparticles to improve their stability in aqueous solution, e.g. the preparation of silver nanoparticle on CNC. Surface functionalization of CNC with polydopamine can be performed by mixing dopamine and CNCs for certain time at designed temperature. The resultant PD-CNCs can be used to stabilize metallic and inorganic nanoparticles, which could be generated in-situ, and further immobilized on the surface of PD coated CNCs. Benefiting from the improved stability, the resultant nanoparticles immobilized PD-CNC system also generally possess higher catalytic activity than the nanoparticles alone.
A method for producing polydopamine (PD) coated cellulose nanocrystals (CNCs), or a derivative thereof, comprising:
A method for producing metallic nanoparticles immobilized on PD coated CNC, or a derivative thereof, comprising:
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A method for reducing or inhibiting antibacterial activity of a bacteria, protozias fungis or algaes comprising contacting said bacteria with an antibacterial effective amount of a polydopamine (PD) coated cellulose nanocrystals (CNCs) comprising metallic nanoparticles immobilized thereon, wherein said PD coated CNC comprising metallic nanoparticle is prepared by the process comprising:
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Dependencies are inferred from the claim text.