Elastic and Flow Properties of Densely Packed Binary Microgel Mixtures with Size and Stiffness Disparities
| العنوان: | Elastic and Flow Properties of Densely Packed Binary Microgel Mixtures with Size and Stiffness Disparities |
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| المؤلفون: | Kenji Urayama, Takumi Watanabe, Daisuke Suzuki, Shun Oura, Ayaki Nakaishi, Saori Minami |
| المصدر: | Macromolecules. 51:9901-9914 |
| بيانات النشر: | American Chemical Society (ACS), 2018. |
| سنة النشر: | 2018 |
| مصطلحات موضوعية: | Materials science, Polymers and Plastics, Rheometer, Organic Chemistry, Flow (psychology), Mixing (process engineering), Stiffness, Binary number, 02 engineering and technology, 021001 nanoscience & nanotechnology, 01 natural sciences, Condensed Matter::Soft Condensed Matter, Inorganic Chemistry, Shear modulus, Rheology, 0103 physical sciences, Materials Chemistry, medicine, Physics::Chemical Physics, medicine.symptom, Composite material, 010306 general physics, 0210 nano-technology, Spectroscopy |
| الوصف: | Densely packed soft microgels (pastes) behave as a yield-stress fluid. They act as soft elastic solids with finite equilibrium shear modulus (G0) below a critical stress (σc) whereas they flow like liquids above σc. The effects of size and stiffness heterogeneities in the constituent microgels on the rheological properties of the pastes are revealed using the binary microgel mixtures by an oscillatory rheometer and diffusive wave spectroscopy (DWS). The binary blends with various degrees of size and stiffness disparities are made by mixing the pastes with the same apparent particle-volume fraction (ϕeff) at various values of relative weight fraction of soft microgels (fsoft). The G0–fsoft relations for the soft/hard microgel mixtures are significantly influenced by size disparity: The relations for small size disparities well obey the logarithmic mixing rule, while those for large size disparities have a wide fsoft regime in which G0 are almost equal to those of the single small-microgel pastes (G0,small)... |
| تدمد: | 1520-5835 0024-9297 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_________::7d7a2986b80339d8216ecdbe12da2548Test https://doi.org/10.1021/acs.macromol.8b01625Test |
| رقم الانضمام: | edsair.doi...........7d7a2986b80339d8216ecdbe12da2548 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 15205835 00249297 |
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