Thermal processing of thermogelling nanoemulsions as a route to tune material properties
Many soft matter systems have properties which depend on their processing history. It is generally accepted that material properties can be finely tuned by carefully directing self-assembly. However, for gelling colloidal systems, it is difficult to characterize such path-dependent effects since the...
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| Format: | Article |
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Royal Society of Chemistry (RSC)
2018
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| Online Access: | http://hdl.handle.net/1721.1/116930 https://orcid.org/0000-0001-5393-1982 https://orcid.org/0000-0003-0546-0690 https://orcid.org/0000-0002-4244-8204 https://orcid.org/0000-0003-2147-9172 |
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| author | Cheng, Li-Chiun Godfrin, Paul Douglas Swan, James W Doyle, Patrick S |
| author2 | Massachusetts Institute of Technology. Department of Chemical Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Chemical Engineering Cheng, Li-Chiun Godfrin, Paul Douglas Swan, James W Doyle, Patrick S |
| author_sort | Cheng, Li-Chiun |
| collection | MIT |
| description | Many soft matter systems have properties which depend on their processing history. It is generally accepted that material properties can be finely tuned by carefully directing self-assembly. However, for gelling colloidal systems, it is difficult to characterize such path-dependent effects since the colloidal attraction is often provided by adding another component to the system such as salts or depletants. Therefore, studies of and an understanding of the role of processing on the material properties of attractive colloidal systems are largely lacking. In this work, we systematically studied how processing greatly influences the properties and the microstructures of model attractive colloidal systems. We perform experiments using a thermogelling nanoemulsion as a model system where the isotropic attraction can be precisely tuned via the temperature. The effects of processing conditions on gel formation and properties is tested by performing well-designed sequential temperature jumps. By properly controlling the thermal history, we demonstrate that properties of colloidal gels can be beyond the limit set by direct quenching, which has been a major focus in literature, and that otherwise slow aging of the system associated with a decrease in elasticity can be prevented. Our results provide new experimental evidence of path-dependent rheology and associated microstructures in attractive colloidal systems and provide guidance to future applications in manufacturing complex colloid-based materials. |
| first_indexed | 2024-09-23T13:14:19Z |
| format | Article |
| id | mit-1721.1/116930 |
| institution | Massachusetts Institute of Technology |
| last_indexed | 2024-09-23T13:14:19Z |
| publishDate | 2018 |
| publisher | Royal Society of Chemistry (RSC) |
| record_format | dspace |
| spelling | mit-1721.1/1169302022-09-28T12:52:52Z Thermal processing of thermogelling nanoemulsions as a route to tune material properties Cheng, Li-Chiun Godfrin, Paul Douglas Swan, James W Doyle, Patrick S Massachusetts Institute of Technology. Department of Chemical Engineering Cheng, Li-Chiun Godfrin, Paul Douglas Swan, James W Doyle, Patrick S Many soft matter systems have properties which depend on their processing history. It is generally accepted that material properties can be finely tuned by carefully directing self-assembly. However, for gelling colloidal systems, it is difficult to characterize such path-dependent effects since the colloidal attraction is often provided by adding another component to the system such as salts or depletants. Therefore, studies of and an understanding of the role of processing on the material properties of attractive colloidal systems are largely lacking. In this work, we systematically studied how processing greatly influences the properties and the microstructures of model attractive colloidal systems. We perform experiments using a thermogelling nanoemulsion as a model system where the isotropic attraction can be precisely tuned via the temperature. The effects of processing conditions on gel formation and properties is tested by performing well-designed sequential temperature jumps. By properly controlling the thermal history, we demonstrate that properties of colloidal gels can be beyond the limit set by direct quenching, which has been a major focus in literature, and that otherwise slow aging of the system associated with a decrease in elasticity can be prevented. Our results provide new experimental evidence of path-dependent rheology and associated microstructures in attractive colloidal systems and provide guidance to future applications in manufacturing complex colloid-based materials. National Science Foundation (U.S.) (DMR – 1419807) Think Global Education Trust (Taiwan) (scholarship) 2018-07-12T14:55:54Z 2018-07-12T14:55:54Z 2018-07-12 2018-06 2018-07-11T16:18:29Z Article http://purl.org/eprint/type/JournalArticle 1744-683X 1744-6848 http://hdl.handle.net/1721.1/116930 Cheng, Li-Chiun, P. Douglas Godfrin, James W. Swan, and Patrick S. Doyle. “Thermal Processing of Thermogelling Nanoemulsions as a Route to Tune Material Properties.” Soft Matter 14, no. 27 (2018): 5604–5614. https://orcid.org/0000-0001-5393-1982 https://orcid.org/0000-0003-0546-0690 https://orcid.org/0000-0002-4244-8204 https://orcid.org/0000-0003-2147-9172 http://dx.doi.org/10.1039/c8sm00814k Soft Matter Creative Commons Attribution-NonCommercial 3.0 Unported https://creativecommons.org/licenses/by-nc/3.0/ application/pdf Royal Society of Chemistry (RSC) Royal Society of Chemistry |
| spellingShingle | Cheng, Li-Chiun Godfrin, Paul Douglas Swan, James W Doyle, Patrick S Thermal processing of thermogelling nanoemulsions as a route to tune material properties |
| title | Thermal processing of thermogelling nanoemulsions as a route to tune material properties |
| title_full | Thermal processing of thermogelling nanoemulsions as a route to tune material properties |
| title_fullStr | Thermal processing of thermogelling nanoemulsions as a route to tune material properties |
| title_full_unstemmed | Thermal processing of thermogelling nanoemulsions as a route to tune material properties |
| title_short | Thermal processing of thermogelling nanoemulsions as a route to tune material properties |
| title_sort | thermal processing of thermogelling nanoemulsions as a route to tune material properties |
| url | http://hdl.handle.net/1721.1/116930 https://orcid.org/0000-0001-5393-1982 https://orcid.org/0000-0003-0546-0690 https://orcid.org/0000-0002-4244-8204 https://orcid.org/0000-0003-2147-9172 |
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