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| Content Provider | Springer Nature Link |
|---|---|
| Author | Liu, Zhiwei Liu, Lei Zhou, Huan Wang, Jiali Deng, Linhong |
| Copyright Year | 2015 |
| Abstract | Toothpastes are mainly composed of a dense suspension of abrasive substances, flavors, and therapeutic ingredients in a background liquid of humectants and water, and usually exhibit complex rheological behaviors. However, the relationship between the rheology and microstructure of toothpaste remains to be studied. In this paper, three commonly used toothpastes, namely Colgate, Darlie and Yunnan Baiyao (Ynby), were qualitatively and quantitatively studied as soft glassy materials. We found that although the three toothpastes generally behaved in similar fashion in terms of rheology, each particular one was distinct from others in terms of the quantitative magnitude of the rheologcial properties including thixotropy, creep and relaxation, yield stress, and power-law dependence of modulus on frequency. In addition, the history-dependent effects were interpreted in terms of aging and rejuvenation phenomena, analogous to those existing in glassy systems, and Ynby seemed to result in greater extent of aging and rejuvenation as compared to the other two. All these differences in toothpaste rheology may well be attributed to the different microscopic network microstructures as observed in this study. Therefore, this study provides first evidence of microstructurebased rheological behaviors of toothpaste, which may be useful for optimizing its composition, manufacturing processing as well as end-user applications. |
| Starting Page | 207 |
| Ending Page | 212 |
| Page Count | 6 |
| File Format | |
| ISSN | 1226119X |
| Journal | Korea-Australia Rheology Journal |
| Volume Number | 27 |
| Issue Number | 3 |
| e-ISSN | 20937660 |
| Language | English |
| Publisher | Korean Society of Rheology, Australian Society of Rheology |
| Publisher Date | 2015-08-26 |
| Publisher Place | Seoul, Melbourne |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | toothpaste rheology microstructure creep aging rejuvenation Characterization and Evaluation of Materials Polymer Sciences Soft and Granular Matter, Complex Fluids and Microfluidics Mechanical Engineering Food Science |
| Content Type | Text |
| Resource Type | Article |
| Subject | Condensed Matter Physics Materials Science |
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