Customization of 3D Printed Silicone Foams
Mae Hwa TAI, Jia Huey SIM, Jing Yuen TEY, Law Yong NG, Hui San THIAM, Danny Wee Kiat NG, Wei Hong YEO, Zhi Hua LEE
Abstract. The rheological properties of the PDMS inks significantly impact the creation of foam using direct ink writing (DIW). This study investigates the influence of glucose and nano-silica on the rheological properties of ink and the characteristics of its pores. Nano-silica significantly enhances yield stress of the ink due to its substantial and immediate network formation with PDMS chains, while glucose primarily acts as a passive filler. A minimum of 5.00phr of nano-silica is essential to maintain silicone ink in viscoelasticity condition, ensure a consistent ink extrusion rate and shape fidelity during direct ink writing (DIW). Additionally, glucose exerted pronounced effect on the porosity of PDMS foam’s, with 42% porosity achieved with 10phr glucose increment. Consequently, the PDMS foam’s porosity can be tailored to the specific application by varying the glucose dosage. The deduction of printability and porosity dependencies on the nano silica and glucose respectively allows the printing of tunable silicone foams for advanced process such as soft robotics, wearable sensors via IoT, drug delivery and etc.
Keywords
Silicone, 3D Printing, Additive Manufacturing, PDMS, Porous
Published online 5/10/2026, 10 pages
Copyright © 2026 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA
Citation: Mae Hwa TAI, Jia Huey SIM, Jing Yuen TEY, Law Yong NG, Hui San THIAM, Danny Wee Kiat NG, Wei Hong YEO, Zhi Hua LEE, Customization of 3D Printed Silicone Foams, Materials Research Proceedings, Vol. 66, pp 345-354, 2026
DOI: https://doi.org/10.21741/9781644904152-32
The article was published as article 32 of the book Advanced Materials and Sustainable Energy Technologies
Content from this work may be used under the terms of the Creative Commons Attribution 3.0 license. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
References
[1] S. Kramer, P. Krajnc, Hierarchically Porous Microspheres by Thiol-ene Photopolymerization of High Internal Phase Emulsions-in-Water Colloidal Systems, Journal. 13 (2021) http://10.3390/polym13193366
[2] R. Woo, G. Chen, J. Zhao, J. Bae, Structure–Mechanical Property Relationships of 3D-Printed Porous Polydimethylsiloxane, ACS Applied Polymer Materials. 3 (2021) 3496-3503. https://doi.org/10.1021/acsapm.1c00417
[3] J. Lv, Z. Gong, Z. He, J. Yang, Y. Chen, C. Tang, Y. Liu, M. Fan, W.-M. Lau, 3D printing of a mechanically durable superhydrophobic porous membrane for oil–water separation, Journal of Materials Chemistry A. 5 (2017) 12435-12444. http://dx.doi.org/10.1039/C7TA02202F
[4] K. Pandey, H. Bindra, D. Paul, R. Nayak, Smart multi-tasking PDMS Nanocomposite sponges for microbial and oil contamination removal from water, Journal of Polymer Research. 27 (2020) https://10.1007/s10965-020-02109-1
[5] A. Turco, E. Primiceri, M. Frigione, G. Maruccio, C. Malitesta, An innovative, fast and facile soft-template approach for the fabrication of porous PDMS for oil–water separation, Journal of Materials Chemistry A. 5 (2017) 23785-23793. http://dx.doi.org/10.1039/C7TA06840A
[6] A. Díaz Lantada, H. Alarcón Iniesta, B. Pareja Sánchez, J.P. García-Ruíz, Free-Form Rapid Prototyped Porous PDMS Scaffolds Incorporating Growth Factors Promote Chondrogenesis, Advances in Materials Science and Engineering. (2014) 612976. https://doi.org/10.1155/2014/612976
[7] J. Si, Z. Cui, P. Xie, L. Song, Q. Wang, Q. Liu, C. Liu, Characterization of 3D elastic porous polydimethylsiloxane (PDMS) cell scaffolds fabricated by VARTM and particle leaching, Journal of Applied Polymer Science. 133 (2016) https://10.1002/app.42909
[8] M. Razavi, R. Primavera, A. Vykunta, A.S. Thakor, Silicone-based bioscaffolds for cellular therapies, Materials Science and Engineering: C. 119 (2021) 111615. https://doi.org/10.1016/j.msec.2020.111615
[9] S. Masihi, M. Panahi, D. Maddipatla, A.J. Hanson, A.K. Bose, S. Hajian, V. Palaniappan, B.B. Narakathu, B.J. Bazuin, M.Z. Atashbar, Highly Sensitive Porous PDMS-Based Capacitive Pressure Sensors Fabricated on Fabric Platform for Wearable Applications, ACS Sensors. 6 (2021) 938-949. https://10.1021/acssensors.0c02122
[10] M. Abshirini, M.C. Saha, L. Cummings, T. Robison, Synthesis and characterization of porous polydimethylsiloxane structures with adjustable porosity and pore morphology using emulsion templating technique, Polymer Engineering & Science. 61 (2021) 1943-1955. https://doi.org/10.1002/pen.25710
[11] M. Abshirini, M. Saha, M. Altan, Y. Liu, 3D Printed Flexible Microscaled Porous Conductive Polymer Nanocomposites for Piezoresistive Sensing Applications, Advanced Materials Technologies. 7 (2022) 2101555. https://10.1002/admt.202101555
[12] T. Métivier, P. Cassagnau, New trends in cellular silicone: Innovations and applications, Journal of Cellular Plastics. 55 (2018) 151-200. https://doi.org/10.1177/0021955X18806845
[13] C. Yu, C. Yu, L. Cui, Z. Song, X. Zhao, Y. Ma, L. Jiang, Facile Preparation of the Porous PDMS Oil-Absorbent for Oil/Water Separation, Advanced Materials Interfaces. 4 (2017) 1600862. https://doi.org/10.1002/admi.201600862
[14] J. González-Rivera, R. Iglio, G. Barillaro, C. Duce, M.R. Tinè, Structural and Thermoanalytical Characterization of 3D Porous PDMS Foam Materials: The Effect of Impurities Derived from a Sugar Templating Process, Journal. 10 (2018) https://10.3390/polym10060616
[15] B.M. Rauzan, A.Z. Nelson, S.E. Lehman, R.H. Ewoldt, R.G. Nuzzo, Particle-Free Emulsions for 3D Printing Elastomers, Advanced Functional Materials. 28 (2018) 1707032. https://10.1002/adfm.201870141
[16] A. M’Barki, L. Bocquet, A. Stevenson, Linking Rheology and Printability for Dense and Strong Ceramics by Direct Ink Writing, Scientific Reports. 7 (2017) 6017. https://10.1038/s41598-017-06115-0
[17] Y.W. Ahmed, A. Loukanov, H.-C. Tsai, State-of-the-Art Synthesis of Porous Polymer Materials and Their Several Fantastic Biomedical Applications: a Review, Advanced Healthcare Materials. n/a (2024) 2403743. https://doi.org/10.1002/adhm.202403743
[18] J. González-Rivera, R. Iglio, G. Barillaro, C. Duce, M.R. Tinè, Structural and Thermoanalytical Characterization of 3D Porous PDMS Foam Materials: The Effect of Impurities Derived from a Sugar Templating Process, Polymers (Basel). 10 (2018) http://10.3390/polym10060616
[19] R. Iglio, S. Mariani, V. Robbiano, L. Strambini, G. Barillaro, Flexible Polydimethylsiloxane Foams Decorated with Multiwalled Carbon Nanotubes Enable Unprecedented Detection of Ultralow Strain and Pressure Coupled with a Large Working Range, ACS Applied Materials & Interfaces. 10 (2018) 13877-13885. https://doi.org/10.1021/acsami.8b02322
[20] R. Zargar, J. Nourmohammadi, G. Amoabediny, Preparation, characterization, and silanization of 3D microporous PDMS structure with properly sized pores for endothelial cell culture, Biotechnol Appl Biochem. 63 (2016) 190-9. https://10.1002/bab.1371
[21] R. Rial, Z. Liu, J.M. Ruso, Soft Actuated Hybrid Hydrogel with Bioinspired Complexity to Control Mechanical Flexure Behavior for Tissue Engineering, Journal. 10 (2020) 1302. http://10.3390/nano10071302
[22] L.Y. Zhou, Q. Gao, J.Z. Fu, Q.Y. Chen, J.P. Zhu, Y. Sun, Y. He, Multimaterial 3D Printing of Highly Stretchable Silicone Elastomers, ACS Appl Mater Interfaces. 11 (2019) 23573-23583. https://10.1021/acsami.9b04873
[23] C. Perrinet, E.-J. Courtial, A. Colly, C. Marquette, R. Fulchiron, An Emulsion Approach to Resolve the Paradox of 3D Printing of Very Soft Silicones, Advanced Materials Technologies. 5 (2020) 1901080. http://10.1002/admt.201901080
[24] Q. Chen, J. Zhao, J. Ren, L. Rong, P.-F. Cao, R.C. Advincula, 3D Printed Multifunctional, Hyperelastic Silicone Rubber Foam, Advanced Functional Materials. 29 (2019) 1900469. https://doi.org/10.1002/adfm.201900469
[25] K.S.W. Sing, Reporting physisorption data for gas/solid systems with special reference to the determination of surface area and porosity (Recommendations 1984), 57 (1985) 603-619. https://doi.org/10.1351/pac198557040603
[26] S. Zhang, C. Ge, R. Liu, Mechanical characterization of the stress-strain behavior of the polydimethylsiloxane (PDMS) substate of wearable strain sensors under uniaxial loading conditions, Sensors and Actuators A: Physical. 341 (2022) 113580. https://www.sciencedirect.com/science/article/pii/S0924424722002187
[27] I. Miranda, A. Souza, P. Sousa, J. Ribeiro, E.M.S. Castanheira, R. Lima, G. Minas, Properties and Applications of PDMS for Biomedical Engineering: A Review, J Funct Biomater. 13 (2021) http://10.3390/jfb13010002
[28] R.A. Lima, The Impact of Polydimethylsiloxane (PDMS) in Engineering: Recent Advances and Applications, Journal. 10 (2025) 41. http://10.3390/fluids10020041
[29] I. Reshma, G.N. Kasinathan, A. Tikoo, P. Meduri, S. Rath, S. Dutta-Gupta, Multifunctional flexible electrospun polydimethylsiloxane (ePDMS) membranes for soft robotics applications and photocatalytic conversion platforms, RSC Applied Polymers. (2025) http://10.1039/D5LP00354G
