公开(公告)号：WO2017165465A1

公开(公告)日：2017-09-28

申请号：PCT/US2017/023485

申请日：2017-03-21

申请人： UNIVERSITY OF MAINE SYSTEM BOARD OF TRUSTEES

发明人： MASON, Michael Darin ,  HOLOMAKOFF, David Gregg ,  HOSSEN, Muhammad Radowan

IPC分类号： C08L1/02 ,  D21H11/18 ,  D21H17/25 ,  D21H21/22 ,  D21C9/18

摘要： The present invention provides, inter alia, biocompatible porous structural materials made exclusively or almost exclusively from nanocellulose fibers (CNF), CNC, or bacterial cellulose, as well as processes for making and using provided compositions. Provided compositions may possess specifically tailored mechanical strength properties and have a design-controlled porosity that is homogeneous or graded, depending on the application. Provided compositions may be manufactured by the controlled dewatering of suspensions of CNF. In some embodiments, provided compositions may include a solids concentration of about 10% to about 95% by weight. Controlled water removal and pore homo- or heterogeneity may be accomplished by controlling capillary, hydrostatic and evaporative processes in the environment of a porous mold around the CNF slurry. A freeze drying or vacuum drying step may be used to complete the drying process, locking in the porous network structure resulting in a predetermined porosity (pore volume/total volume), and pore size distribution.

摘要翻译： 本发明尤其提供了专门或几乎全部由纳米纤维素纤维（CNF），CNC或细菌纤维素制成的生物相容性多孔结构材料，以及制备和使用提供的组合物的方法。 所提供的组合物可以具有特定的机械强度性能，并且具有设计控制的孔隙率，其均匀或分级，这取决于应用。 所提供的组合物可以通过CNF悬浮液的受控脱水来制造。 在一些实施方案中，提供的组合物可以包含约10重量％至约95重量％的固体浓度。 通过控制围绕CNF浆液的多孔模具的环境中的毛细管，静水压和蒸发过程，可以实现受控的除水和孔同质性或非均质性。 可以使用冷冻干燥或真空干燥步骤来完成干燥过程，锁定多孔网络结构以产生预定的孔隙率（孔体积/总体积）和孔径分布。

公开(公告)号：WO2021086947A1

公开(公告)日：2021-05-06

申请号：PCT/US2020/057711

申请日：2020-10-28

申请人： UNIVERSITY OF MAINE SYSTEM BOARD OF TRUSTEES

发明人： MASON, Michael Darin ,  TAJVIDI, Mehdi ,  CO, Aileen ,  HAJI MIRZA TAYEB, Seyed Ali ,  HAFEZ, Islam ,  HOLOMAKOFF, David Gregg

IPC分类号： C08B15/00 ,  C08B15/05 ,  C08J9/28

摘要： The present invention includes methods of making a nanocellulosic composition comprising one or more nanocellulosic components, wherein the one or more nanocellulosic components comprise a micron-scale cellulose or cellulose nanofibrils (CNF), the method comprising the steps of: creating a nanocellulosic slurry by combining the one or more of nanocellulosic components with a liquid component; and exposing the nanocellulosic slurry to a drying condition, wherein the drying condition comprises microwave radiation, thereby creating a nanocellulosic composition. The present invention also includes compositions comprising cellulose (nanocellulosic compositions), wherein the nanocellulosic compositions have an internal void space of about 5% to about 95% by volume.