Invention Grant
US08398901B2 Method for producing iridescent solid nanocrystalline cellulose films incorporating patterns
失效
用于制造掺有图案的彩虹色固体纳米晶体纤维素薄膜的方法
- Patent Title: Method for producing iridescent solid nanocrystalline cellulose films incorporating patterns
- Patent Title (中): 用于制造掺有图案的彩虹色固体纳米晶体纤维素薄膜的方法
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Application No.: US12591906Application Date: 2009-12-04
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Publication No.: US08398901B2Publication Date: 2013-03-19
- Inventor: Stephanie Beck , Jean Bouchard , Richard Berry
- Applicant: Stephanie Beck , Jean Bouchard , Richard Berry
- Applicant Address: CA Pointe Claire, QC
- Assignee: FPinnovations
- Current Assignee: FPinnovations
- Current Assignee Address: CA Pointe Claire, QC
- Agency: Norton Rose Canada LLP
- Main IPC: B29D11/00
- IPC: B29D11/00 ; B29C39/38

Abstract:
A new method to produce solid nanocrystalline cellulose (NCC) films containing patterns by differential heating of aqueous suspensions of NCC has been discovered. When acid-form NCC suspensions are dried by heating to temperatures above 50° C., darkening of the NCC can occur, while neutral forms of NCC can produce iridescent chiral nematic films by heating to temperatures up to 105° C. Placing materials of different thermal conductivity beneath the container containing an evaporating NCC suspension results in watermark-like patterns of different iridescent color imprinted within the film structure. Other colloidal rod-like particles can be employed in place of nanocrystalline cellulose (NCC), for example chitin or chitosan.
Public/Granted literature
- US20100151159A1 Iridescent solid nanocrystalline cellulose films incorporating patterns and method for their production Public/Granted day:2010-06-17
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