Use of thermoplastic cellulose composite for additive manufacturing
AssigneeTeknologian tutkimuskeskus VTT Oy
InventorsKirsi Immonen, Eino Sivonen, Sini Metsä-Kortelainen, Jarmo Ropponen, Pia Willberg-Keyriläinen
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Abstract
The present invention relates to a thermoplastic cellulose composite for additive manufacturing. The composite comprises at least 50 weight-% of total cellulose, a plasticizer, and a coupling agent of an epoxy-modified polyunsaturated fatty acid. The material is fully bio-based and offers improved cellulose content and thermal resistance compared to existing bio-based thermoplastic materials used in additive manufacturing.
Claims16
A three dimensional (3D) printable thermoplastic cellulose composite comprising at least 50 weight-% of total cellulose, a plasticizer, and a coupling agent comprising an epoxy modified polyunsaturated fatty acid, wherein the plasticizer comprises molar mass controlled cellulose having an average molecular mass distribution in a range between 30 and 300 kDa.
A three dimensional (3D) printable thermoplastic cellulose composite comprising at least 50 weight-% of total cellulose, a plasticizer, and a coupling agent comprising an epoxy modified polyunsaturated fatty acid, wherein the plasticizer comprises hydroxypropylated cellulose, hydroxyethylated cellulose, hydroxybutylated cellulose, cellulose esters having fatty acid chain length between C6 to C30, and mixtures thereof.
A three dimensional (3D) printable thermoplastic cellulose composite comprising at least 50 weight-% of total cellulose, a plasticizer, and a coupling agent comprising an epoxy modified polyunsaturated fatty acid, wherein the total cellulose comprises microcellulose of a particle size below 100 μm.
Dependencies are inferred from the claim text.