Process for manufacturing a thermoformable plasticized composite containing cellulose fiber and a moldable polymer
AssigneeTeknologian tutkimuskeskus VTT Oy
InventorsKirsi Immonen, Eino Sivonen, Kyosti Valta, Janne Hulkko, Samu Aalto, Pauliina Pitkanen, Kirsi Salorinne
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Abstract
The present invention concerns a process for manufacturing a thermoformable plasticized composite containing cellulose fiber and polylactide by blending the dry cellulose fiber and a compatibilizer in a compactor into pellets, and subsequently reacting the reactive compatibilizer and the mixture of cellulose fiber and polylactide by compounding. The invention also concerns a composite manufactured using said process, as well as further processed products.
Claims17
A process for manufacturing a thermoformable plasticized composite from cellulose fiber and a moldable polymer comprising;
- compacting dry cellulose fibers having a dry matter content ranging from 55 wt % to 99.9 wt % and one or more compatibilizers into a compressed biomaterial to form compatibilizer-containing cellulose pellets;
- reacting the compatibilizer-containing cellulose pellets and a moldable polymer by compounding them into a thermoformable plasticized composite;
- wherein the one or more compatibilizers comprises at least one of ≧C8 aliphatic linear or branched organic compounds containing epoxy, silicate, or hydroxyl functionalities or a silicone derivative containing epoxy, hydroxyl, or double bond functionalities, and
- wherein the thermoformable plasticized composite has cross-linking by covalent bonds formed between the dry cellulose fibers and the polymer.
A thermoformable plasticized composite containing cellulose fiber and polylactide, wherein it has been manufactured using a process comprising;
- blending dry cellulose fibers having a dry matter content ranging from 55 wt % to 99.9 wt % and one or more compatibilizers to form compatibilizer-containing cellulose pellets;
- drying the compatibilizer-containing cellulose pellets;
- reacting the compatibilizer-containing cellulose pellets and polylactide by compounding-them into a thermoformable plasticized composite,
- wherein the one or more compatibilizers is selected from the group consisting of ≧C8 aliphatic linear or branched organic compounds containing epoxy, silicate, or hydroxyl functionalities or a silicone derivative containing epoxy, hydroxyl, or double bond functionalities, and
- wherein the thermoformable plasticized composite has cross-linking by covalent bonds formed between the dry cellulose fibers and the polymer.
Dependencies are inferred from the claim text.