Title: Lignin-based polymers with enhanced melt extrusion ability

Abstract

A solid polymer blend material comprising: (i) lignin; and (ii) a polyamide having a melting point of no more than 240° C. and which is below the decomposition temperature of the lignin; wherein said lignin is homogeneously dispersed in said polyamide. Methods for producing the blend material are also described. Methods for producing objects made of the blend material by melt extrusion are also described, comprising: (a) melt blending components (i) and (ii) to form a polymer blend in which components (i) and (ii) are homogeneously blended, wherein the polymer blend exhibits a melt viscosity of no more than 2000 Pa·s at a shear rate of 100-1000 s⁻¹ and when heated to a temperature of no more than 240° C.; and; (b) forming an object made of said polymer blend material.

Inventors:

Naskar, Amit K.; Nguyen, Ngoc A.

Issue Date:

2022-02-15

Research Org.:

Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

Sponsoring Org.:

USDOE

OSTI Identifier:

1892609

Patent Number(s):

11248121

Application Number:

16/257,294

Assignee:

UT-Battelle, LLC (Oak Ridge, TN)

Patent Classifications (CPCs):

B - PERFORMING OPERATIONS B29 - WORKING OF PLASTICS B29C - SHAPING OR JOINING OF PLASTICS

B - PERFORMING OPERATIONS B29 - WORKING OF PLASTICS B29K - INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR {MOULDS, } REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS

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B - PERFORMING OPERATIONS B29 - WORKING OF PLASTICS B29C - SHAPING OR JOINING OF PLASTICS

B29C64/118 - using filamentary material being melted, e.g. fused deposition modelling [FDM]

B - PERFORMING OPERATIONS B29 - WORKING OF PLASTICS B29K - INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR {MOULDS, } REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS

B29K2093/00 - Use of natural resins, e.g. shellac, or derivatives thereof, as moulding material
B29K2277/00 - Use of {PA, i.e.} polyamides, e.g. polyesteramides {or derivatives thereof,} as reinforcement

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 C08G - MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS

C08G69/08 - derived from amino-carboxylic acids

C - CHEMISTRY C08 - ORGANIC MACROMOLECULAR COMPOUNDS C08K - Use of inorganic or non-macromolecular organic substances as compounding ingredients

C08K3/046 - {Carbon nanorods, nanowires, nanoplatelets or nanofibres}
C08K7/06 - Elements

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

C08L77/00 - Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain
C08L77/02 - Polyamides derived from omega-amino carboxylic acids or from lactams thereof
C08L77/06 - Polyamides derived from polyamines and polycarboxylic acids
C08L97/005 - {Lignin}

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DOE Contract Number:  

AC05-00OR22725

Resource Type:

Patent

Resource Relation:

Patent File Date: 01/25/2019

Country of Publication:

United States

Language:

English