SMART COMPOSITES CONTAINING MODIFIED CELLULOSIC NA

专利名称：SMART COMPOSITES CONTAINING

MODIFIED CELLULOSIC NANOMATERIALS

发明人：Dylan J. Boday,Joseph Kuczynski,Robert E.

Meyer, III

申请号：US14203975申请日：20140311

公开号：US20150259526A1公开日：20150917

专利附图：

摘要：In accordance with some embodiments of the present invention, a compositematerial is prepared by blending a bio-derived filler into a polymer, wherein the filler

includes a diene-modified cellulosic nanomaterial (e.g., cellulose nanocrystals (CNCs)and/or cellulose nanofibrils (CNFs) functionalized to contain a diene) and a dienophile-modified cellulosic nanomaterial (e.g., CNCs and/or CNFs functionalized to contain adienophile). The modulus of the composite material is reversibly controllable byadjusting a degree of crosslinking between the diene-modified cellulosic nanomaterialand the dienophile-modified cellulosic nanomaterial. This degree of crosslinking isthermally reversible. On one hand, the degree of crosslinking may be increased via aDiels-Alder (DA) cycloaddition reaction at a first temperature, thereby increasing themodulus of the composite material. On the other hand, the degree of crosslinking maybe decreased via a retro-DA reaction at a second temperature higher than the firsttemperature, thereby decreasing the modulus of the composite material.

申请人：International Business Machines Corporation

地址：Armonk NY US

国籍：US

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