公开(公告)号：US20140288296A1

公开(公告)日：2014-09-25

申请号：US14223030

申请日：2014-03-24

Applicant: FPINNOVATIONS

Inventor： Hao QI ,  Thomas Qiuxiong HU ,  Gilles DORRIS

IPC: C08J5/18 ,  C08L1/02

CPC classification number: C08J5/18 ,  C08J2301/02 ,  C08J2301/28 ,  C08L1/02 ,  C08L1/286 ,  C08L2205/16 ,  C09D101/02 ,  C09D101/286

Abstract: A method for the production of cellulose films with at least one hydrophobic or less hydrophilic surface, or with at least one surface with a water contact angle (θ) in a range from 55° to less than 100° is described. The method involves contacting the cellulose material with a hydrophobic solid material during the preparation of the cellulose films or with a vapour of a non-polar or polar aprotic solvent during or after the preparation of the cellulose films. Examples of the cellulose material are cellulose filaments (CF) made to have at least 50% by weight of the filaments having a filament length up to 350 μm and a filament diameter between 100 and 500 nm from multi-pass, high consistency refining of wood or plant fibers, and commercially-available sodium carboxymethyl cellulose. Examples of the hydrophobic solid material are hydrophobic polymers, poly(methylpentene) and poly(ethylene). Examples of the non-polar solvent are hexane and toluene. Examples of the polar aprotic solvent are acetone and ethyl acetate.

Abstract translation: 描述了一种制备具有至少一个疏水性或较不亲水性表面的纤维素膜的方法，或者在至少一个具有55°至小于100°范围内的水接触角（...）的表面。 该方法包括在制备纤维素膜期间或在制备纤维素膜期间或之后与非极性或极性非质子溶剂的蒸气一起在纤维素膜的制备过程中使纤维素材料与疏水性固体材料接触。 纤维素材料的实例是纤维素长丝（CF），其制成具有至多50重量％的长丝，长丝长度达350μm，长丝直径在100和500nm之间，从多道次，高浓度木材精炼 或植物纤维，和市售的羧甲基纤维素钠。 疏水性固体材料的实例是疏水性聚合物，聚（甲基戊烯）和聚（乙烯）。 非极性溶剂的实例是己烷和甲苯。 极性非质子溶剂的实例是丙酮和乙酸乙酯。