PDMS microspheres as rheological additives for PDMS-based DIW inks
Direct Ink Writing holds vast potential for additive manufacturing with broad material compatibility as long as appropriate rheological properties are exhibited by the material of choice. Additives are often included to attain the desired rheological properties for printing, but these same additives...
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| Format: | Article |
| Language: | English |
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KeAi Communications Co., Ltd.
2025-01-01
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| Series: | Advanced Industrial and Engineering Polymer Research |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2542504824000265 |
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| author | Utkarsh Ramesh Jonathan Miller Bryce Stottelmire James Beach Steven Patterson Laura Cumming Sabrina Wells Torres Dakota Even Petar Dvornic Cory Berkland |
| author_facet | Utkarsh Ramesh Jonathan Miller Bryce Stottelmire James Beach Steven Patterson Laura Cumming Sabrina Wells Torres Dakota Even Petar Dvornic Cory Berkland |
| author_sort | Utkarsh Ramesh |
| collection | DOAJ |
| description | Direct Ink Writing holds vast potential for additive manufacturing with broad material compatibility as long as appropriate rheological properties are exhibited by the material of choice. Additives are often included to attain the desired rheological properties for printing, but these same additives can yield products with undesirable mechanical properties. For example, silica fillers are used to create silicone inks appropriate for printing but yield cured structures that are too stiff. In this work, we investigate the applicability of PDMS microspheres as a rheological and thixotropic additive for PDMS based DIW inks. We utilize a facile oil-in-water emulsion method to reproducibly obtain small (∼5 μm) PDMS microspheres, which are then incorporated into PDMS-based inks. More traditional inks with fumed silica and thixotropic additive were compared with inks containing PDMS microspheres at equal volume loadings to determine whether the PDMS microspheres could impart the desired rheological properties for DIW. Inks including PDMS microspheres exhibited surprising thixotropic effects, which enabled prints with fidelity analogous to traditional ink employing silica filler, while producing mechanically softer prints. |
| format | Article |
| id | doaj-art-b61d430811c542fea6c3409f750ff87a |
| institution | Kabale University |
| issn | 2542-5048 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Advanced Industrial and Engineering Polymer Research |
| spelling | doaj-art-b61d430811c542fea6c3409f750ff87a2025-01-18T05:05:02ZengKeAi Communications Co., Ltd.Advanced Industrial and Engineering Polymer Research2542-50482025-01-018119PDMS microspheres as rheological additives for PDMS-based DIW inksUtkarsh Ramesh0Jonathan Miller1Bryce Stottelmire2James Beach3Steven Patterson4Laura Cumming5Sabrina Wells Torres6Dakota Even7Petar Dvornic8Cory Berkland9Department of Pharmaceutical Chemistry, University of Kansas, 2095 Constant Avenue, Lawrence, KS, 66047, USA; Department of Biomedical Engineering, Washington University in St. Louis, 1 Brookings Dr, St. Louis, MO, 63105, USAHiguchi Biosciences Center, University of Kansas, 2099 Constant Avenue, Lawrence, KS, 66047, USADepartment of Pharmaceutical Chemistry, University of Kansas, 2095 Constant Avenue, Lawrence, KS, 66047, USA; Department of Chemical and Petroleum Engineering, University of Kansas, 1530 W 15th St, Lawrence, KS, 66045, USA; Department of Biomedical Engineering, Washington University in St. Louis, 1 Brookings Dr, St. Louis, MO, 63105, USADepartment of Energy, Kansas City National Security Campus, Kansas City, MO, 64147, USADepartment of Energy, Kansas City National Security Campus, Kansas City, MO, 64147, USADepartment of Energy, Kansas City National Security Campus, Kansas City, MO, 64147, USADepartment of Energy, Kansas City National Security Campus, Kansas City, MO, 64147, USADepartment of Energy, Kansas City National Security Campus, Kansas City, MO, 64147, USADepartment of Chemistry, Pittsburg State University, 104 Heckert-Wells Hall, Pittsburg, KS, 66762, USADepartment of Pharmaceutical Chemistry, University of Kansas, 2095 Constant Avenue, Lawrence, KS, 66047, USA; Department of Chemical and Petroleum Engineering, University of Kansas, 1530 W 15th St, Lawrence, KS, 66045, USA; Department of Biomedical Engineering, Washington University in St. Louis, 1 Brookings Dr, St. Louis, MO, 63105, USA; Corresponding author. Department of Biomedical Engineering, Washington University in St. Louis, 1 Brookings Dr, St. Louis, MO, 63105, USADirect Ink Writing holds vast potential for additive manufacturing with broad material compatibility as long as appropriate rheological properties are exhibited by the material of choice. Additives are often included to attain the desired rheological properties for printing, but these same additives can yield products with undesirable mechanical properties. For example, silica fillers are used to create silicone inks appropriate for printing but yield cured structures that are too stiff. In this work, we investigate the applicability of PDMS microspheres as a rheological and thixotropic additive for PDMS based DIW inks. We utilize a facile oil-in-water emulsion method to reproducibly obtain small (∼5 μm) PDMS microspheres, which are then incorporated into PDMS-based inks. More traditional inks with fumed silica and thixotropic additive were compared with inks containing PDMS microspheres at equal volume loadings to determine whether the PDMS microspheres could impart the desired rheological properties for DIW. Inks including PDMS microspheres exhibited surprising thixotropic effects, which enabled prints with fidelity analogous to traditional ink employing silica filler, while producing mechanically softer prints.http://www.sciencedirect.com/science/article/pii/S2542504824000265Direct ink WritingRheological additivesEmulsion chemistryPDMS MicrospheresSolvent transfer |
| spellingShingle | Utkarsh Ramesh Jonathan Miller Bryce Stottelmire James Beach Steven Patterson Laura Cumming Sabrina Wells Torres Dakota Even Petar Dvornic Cory Berkland PDMS microspheres as rheological additives for PDMS-based DIW inks Advanced Industrial and Engineering Polymer Research Direct ink Writing Rheological additives Emulsion chemistry PDMS Microspheres Solvent transfer |
| title | PDMS microspheres as rheological additives for PDMS-based DIW inks |
| title_full | PDMS microspheres as rheological additives for PDMS-based DIW inks |
| title_fullStr | PDMS microspheres as rheological additives for PDMS-based DIW inks |
| title_full_unstemmed | PDMS microspheres as rheological additives for PDMS-based DIW inks |
| title_short | PDMS microspheres as rheological additives for PDMS-based DIW inks |
| title_sort | pdms microspheres as rheological additives for pdms based diw inks |
| topic | Direct ink Writing Rheological additives Emulsion chemistry PDMS Microspheres Solvent transfer |
| url | http://www.sciencedirect.com/science/article/pii/S2542504824000265 |
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