公开(公告)号：WO2014127470A1

公开(公告)日：2014-08-28

申请号：PCT/CA2014/050096

申请日：2014-02-12

Applicant: CELLUFORCE INC.

Inventor： HAMAD, Wadood Yasser ,  MACLACHLAN, Mark John ,  KELLY, Joel Alexander ,  SHOPSOWITZ, Kevin Eric

IPC: C08L33/00 ,  C08F2/44 ,  C08J3/075 ,  C08J3/24 ,  C08L1/02

CPC classification number: C08L33/26 ,  C08F2/44 ,  C08F220/20 ,  C08F220/28 ,  C08F220/56 ,  C08L1/02 ,  C08L33/02 ,  C08L33/14 ,  C08F220/54 ,  C08F222/385 ,  C08F2220/286 ,  C08F2222/1013 ,  C08F220/06

Abstract: Composite hydrogels with a chiral organization with tunable responsive photonic properties are conceived. A polymerizable hydrophilic monomer such as acrylamide is reacted in the presence of nanocrystalline cellulose (NCC) to give a composite hydrogel with cellulose nanocrystals embedded in a chiral nematic organization. Through control of the reaction conditions, the hydrogel can exhibit photonic colour that can be varied throughout the visible and near-infrared regions. The colour shifts substantially and reversibly upon swelling and shrinking of the hydrogel through solvation in aqueous and nonaqueous media. The responsive properties can be tailored both through choice of monomer and/or through chemical modification of the NCC surface. Examples of possible applications of the materials are: tunable reflective filters, chemical sensors, stationary phases for electrophoresis of chiral or achiral substances, and as a template to generate new materials with chiral nematic structures.

Abstract translation: 构想具有可调谐响应光子性质的手性组合的复合水凝胶。 可聚合的亲水性单体如丙烯酰胺在纳米晶体纤维素（NCC）的存在下反应，得到嵌入手性向列组织中的纤维素纳米晶体的复合水凝胶。 通过控制反应条件，水凝胶可以表现出可在整个可见光和近红外区域变化的光子颜色。 在水凝胶和非水介质中通过溶剂化使水凝胶膨胀和收缩时，颜色基本上可逆地移动。 响应特性可以通过选择单体和/或通过NCC表面的化学修饰进行调整。 这些材料可能应用的例子有：可调谐反射滤光片，化学传感器，手性或非手性物质电泳的固定相，以及用手性向列结构生成新材料的模板。

公开(公告)号：EP2958960A1

公开(公告)日：2015-12-30

申请号：EP14754821.8

申请日：2014-02-12

Applicant: Celluforce Inc. ,  University of British Columbia

Inventor： HAMAD, Wadood Yasser ,  MACLACHLAN, Mark John ,  KELLY, Joel Alexander ,  SHOPSOWITZ, Kevin Eric

IPC: C08L33/00 ,  C08F2/44 ,  C08J3/075 ,  C08J3/24 ,  C08L1/02

CPC classification number: C08L33/26 ,  C08F2/44 ,  C08F220/20 ,  C08F220/28 ,  C08F220/56 ,  C08L1/02 ,  C08L33/02 ,  C08L33/14 ,  C08F220/54 ,  C08F222/385 ,  C08F2220/286 ,  C08F2222/1013 ,  C08F220/06

Abstract: Composite hydrogels with a chiral organization with tunable responsive photonic properties are conceived. A polymerizable hydrophilic monomer such as acrylamide is reacted in the presence of nanocrystalline cellulose (NCC) to give a composite hydrogel with cellulose nanocrystals embedded in a chiral nematic organization. Through control of the reaction conditions, the hydrogel can exhibit photonic colour that can be varied throughout the visible and near-infrared regions. The colour shifts substantially and reversibly upon swelling and shrinking of the hydrogel through solvation in aqueous and nonaqueous media. The responsive properties can be tailored both through choice of monomer and/or through chemical modification of the NCC surface. Examples of possible applications of the materials are: tunable reflective filters, chemical sensors, stationary phases for electrophoresis of chiral or achiral substances, and as a template to generate new materials with chiral nematic structures.