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公开(公告)号：EP2373835B1
公开(公告)日：2017-11-15
申请号：EP09832760.4
申请日：2009-12-08
申请人： FPInnovations
CPC分类号： C08J5/18 , B65D65/466 , C08J2301/02 , C08L1/02 , Y10T428/1348
摘要： A new method to control the dispersibility of dried nanocrystalline cellulose (NCC) by controlling solution pH and ionic strength is provided; when stable, non-reswellable acid-form NCC (H-NCC) films are placed in concentrated sodium hydroxide solutions, they swell but do not disperse; while sodium-form NCC (Na-NCC) or other NCC films having neutral monovalent counterions readily disperse in pure water, Na-NCC films placed in hydrochloric acid and sodium chloride as well as sodium hydroxide solutions of sufficient ionic strength swell, but do not disperse; similar properties are observed for freeze-dried NCC products. The dispersibility of these NCC films is a function of the ionic strength and the identity of the electrolyte solutions to which they are exposed. NCC films are envisaged that have barrier properties in an electrolyte solution but that disintegrate or disperse when rinsed with pure water at the end of their useful lifespan.
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公开(公告)号：EP2370618B1
公开(公告)日：2015-02-18
申请号：EP09831345.5
申请日：2009-12-08
申请人： FPInnovations
CPC分类号： C08B15/08
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3.发明公开IRIDESCENT SOLID NANOCRYSTALLINE CELLULOSE FILMS INCORPORATING PATTERNS AND METHOD FOR THEIR PRODUCTION 审中-公开IRIDESCENT固体膜由纳米结晶纤维素有图案及其制造方法
公开(公告)号：EP2389462A1
公开(公告)日：2011-11-30
申请号：EP09831338.0
申请日：2009-12-08
申请人： Fpinnovations
发明人： BECK, Stephanie , BOUCHARD, Jean , BERRY, Richard
CPC分类号： G02B5/3008 , B42D25/29 , B42D25/391 , B82Y20/00
摘要： 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 colour imprinted within the film structure. Other colloidal rod-like particles can be employed in place of nanocrystalline cellulose (NCC), for example chitin or chitosan.
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公开(公告)号：EP2370618A1
公开(公告)日：2011-10-05
申请号：EP09831345.5
申请日：2009-12-08
申请人： FPInnovations
发明人： BECK, Stephanie , BOUCHARD, Jean , BERRY, Richard
CPC分类号： C08B15/08
摘要： Dried forms of nanocrystalline cellulose (NCC) with controllable redispersibility in water are provided; lightweight and easily transportable dried acid-form nanocrystalline cellulose which can be resuspended for use in a desired application can be produced by maintaining the humidity content of the NCC within a specific, low, range; evaporated acid-form NCC suspensions with moisture contents below this range are non-dispersible and therefore can be subsequently fixed in permanently dried form; the second form is produced by exchanging the proton of the acid-form NCC for neutral monovalent counterions and freeze-drying the NCC to give a solid product which rapidly disperses when placed in water; properties similar to those of the original suspension are also obtained with a brief sonication treatment.
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5.发明授权A METHOD TO CONTROL THE DISPERSIBILITY AND BARRIER PROPERTIES OF DRIED NANOCRYSTALLINE CELLULOSE IN SOLUTIONS OF DIFFERENT pH AND IONIC STRENGTH 有权一种控制pH值和离子强度不同的溶液中纳米纤维素纤维的分散性和阻隔性能的方法
公开(公告)号：EP2373835B8
公开(公告)日：2017-12-20
申请号：EP09832760.4
申请日：2009-12-08
申请人： FPInnovations
CPC分类号： C08J5/18 , B65D65/466 , C08J2301/02 , C08L1/02 , Y10T428/1348
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6.发明公开DRIED NANOCRYSTALLINE CELLULOSE OF CONTROLLABLE DISPERSIBILITY AND METHOD THEREFOR 审中-公开应税分散性和及其方法经干燥的纳米结晶纤维素
公开(公告)号：EP2526120A1
公开(公告)日：2012-11-28
申请号：EP11734282.4
申请日：2011-01-18
申请人： FPInnovations
发明人： BECK, Stephanie , BOUCHARD, Jean , BERRY, Richard
CPC分类号： C08B15/08 , C08J3/12 , C08J5/18 , C08J2301/02 , Y10T428/2982 , Y10T428/2991
摘要： Dried nanocrystalline cellulose (NCC), in particular films of NCC, of controlled water dispersibility and a method to control the dispersibility of dried NCC by controlling electrolyte solution ionic strength and ion valency is described. Neutral M-NCC suspensions containing monovalent counterions (e.g., M=Na+, K+, NH4+, Et4N+) produced by neutralization of acid-form NCC (H-NCC) with the appropriate hydroxide, are readily dispersible in water when fully dried; this is in contrast to H-NCC. The dispersion of dried M-NCC in aqueous media is effectively prevented by a combination of (1) increased electrolyte concentration and ionic strength, and (2) higher valency of the cation component of the dissolved salt. Additionally, pre-treatment of dried M-NCC films with an electrolyte solution having a polyvalent cation, for example a divalent or trivalent cation is sufficient to prevent the subsequent dispersion of the M-NCC film in pure water.
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7.发明公开CONTROL OF NANOCRYSTALLINE CELLULOSE FILM IRIDESCENCE WAVELENGTH 审中-公开控制纳米晶体纤维素薄膜IRISIERUNGSWELLENLÄNGE的
公开(公告)号：EP2424927A1
公开(公告)日：2012-03-07
申请号：EP10769201.4
申请日：2010-04-28
申请人： Fpinnovations
发明人： BECK, Stephanie , BOUCHARD, Jean , BERRY, Richard
CPC分类号： C09K19/02 , B82Y20/00 , C09K19/52 , C09K19/542 , G02B2207/101
摘要： A new method to control the iridescence colour of solid nanocrystalline cellulose (NCC) films by ultrasound and high-shear (mechanical) energy input to the NCC suspension prior to film formation is provided. As the energy input to the NCC suspension increases, the resulting film colour shifts from the ultraviolet region towards the infrared region of the electromagnetic spectrum; this wavelength shift lies in the opposite direction to that caused by the addition of electrolytes to NCC suspensions prior to film formation. No additives are required to achieve the changes in colour; colour changes can also be effected by mixing two suspensions exposed to different levels of sonication of differing sonication levels.
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8.发明公开A METHOD TO CONTROL THE DISPERSIBILITY AND BARRIER PROPERTIES OF DRIED NANOCRYSTALLINE CELLULOSE IN SOLUTIONS OF DIFFERENT pH AND IONIC STRENGTH 有权用于控制经干燥的纳米结晶纤维素的分散性和阻隔性能与不同了pH和不同离子强度溶液
公开(公告)号：EP2373835A1
公开(公告)日：2011-10-12
申请号：EP09832760.4
申请日：2009-12-08
申请人： FPInnovations
发明人： BECK, Stephanie , BOUCHARD, Jean , BERRY, Richard
CPC分类号： C08J5/18 , B65D65/466 , C08J2301/02 , C08L1/02 , Y10T428/1348
摘要： A new method to control the dispersibility of dried nanocrystalline cellulose (NCC) by controlling solution pH and ionic strength is provided; when stable, non- reswellable acid-form NCC (H-NCC) films are placed in concentrated sodium hydroxide solutions, they swell but do not disperse; while sodium-form NCC (Na- NCC) or other NCC films having neutral monovalent counterions readily disperse in pure water, Na-NCC films placed in hydrochloric acid and sodium chloride as well as sodium hydroxide solutions of sufficient ionic strength swell, but do not disperse; similar properties are observed for freeze-dried NCC products. The dispersibility of these NCC films is a function of the ionic strength and the identity of the electrolyte solutions to which they are exposed. NCC films are envisaged that have barrier properties in an electrolyte solution but that disintegrate or disperse when rinsed with pure water at the end of their useful lifespan.
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