Title: 3D printable liquid crystalline elastomers with tunable shape memory behavior and bio-derived renditions

Abstract

Described herein are liquid crystalline elastomer compositions comprising aromatic epoxy units crosslinked with alkylene diacid units having alkylene segments containing at least one methylene unit, and/or aromatic epoxy units crosslinked with polyphenolic units, wherein the aromatic epoxy units and alkylene diacid units and/or polyphenolic units are in a molar ratio that results in the liquid crystalline elastomer composition exhibiting a glass transition temperature (Tg) and a thermal stability of the liquid crystalline phase (Tlc) that make them particularly suitable as shape memory materials and for use in methods of additive manufacturing. Methods for producing these compositions and their use in additive manufacturing processes are also described.

Inventors:

Li, Yuzhan; Rios, Orlando; Johs, Alexander; Kessler, Michael Richard

Issue Date:

2019-09-10

Research Org.:

Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Sponsoring Org.:

USDOE

OSTI Identifier:

1576328

Patent Number(s):

10407535

Application Number:

15/091,182

Assignee:

UT-Battelle, LLC (Oak Ridge, TN); Washington State University (Pullman, WA)

Patent Classifications (CPCs):

C - CHEMISTRY C08 - ORGANIC MACROMOLECULAR COMPOUNDS C08G - MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS

B - PERFORMING OPERATIONS B33 - ADDITIVE MANUFACTURING TECHNOLOGY B33Y - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING

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C - CHEMISTRY C08 - ORGANIC MACROMOLECULAR COMPOUNDS C08G - MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS

C08G59/686 - {containing nitrogen}

B - PERFORMING OPERATIONS B33 - ADDITIVE MANUFACTURING TECHNOLOGY B33Y - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING

B33Y70/00 - Materials specially adapted for additive manufacturing

C - CHEMISTRY C08 - ORGANIC MACROMOLECULAR COMPOUNDS C08L - COMPOSITIONS OF MACROMOLECULAR COMPOUNDS

C08L63/00 - Compositions of epoxy resins

C - CHEMISTRY C08 - ORGANIC MACROMOLECULAR COMPOUNDS C08G - MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS

C08G59/4207 - {aliphatic}

B - PERFORMING OPERATIONS B33 - ADDITIVE MANUFACTURING TECHNOLOGY B33Y - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING

B33Y10/00 - Processes of additive manufacturing

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DOE Contract Number:  

AC05-00OR22725

Resource Type:

Patent

Resource Relation:

Patent File Date: 2016 Apr 05

Country of Publication:

United States

Language:

English

Subject:

36 MATERIALS SCIENCE