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Lu M, Xiang S, Huang Y, Li G. Morphological stabilization efficiencies of nanoparticles toward flowing polymer blends: Role of roughness and viscosity ratio. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.129094] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Xiang SY, Yao YC, Lu MM, Huang YJ, Kong MQ, Li GX. Structural Evolution in Flowing Immiscible Blends in the Presence of Rough Particles: Dependence of Shear Rate and Blend Ratio. CHINESE JOURNAL OF POLYMER SCIENCE 2021. [DOI: 10.1007/s10118-021-2569-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Amoabeng D, Tempalski A, Young BA, Binks BP, Velankar SS. Fumed silica induces co-continuity across a wide composition range in immiscible polymer blends. POLYMER 2020. [DOI: 10.1016/j.polymer.2019.121831] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Singha S, Malipeddi AR, Zurita-Gotor M, Sarkar K, Shen K, Loewenberg M, Migler KB, Blawzdziewicz J. Mechanisms of spontaneous chain formation and subsequent microstructural evolution in shear-driven strongly confined drop monolayers. SOFT MATTER 2019; 15:4873-4889. [PMID: 31165134 PMCID: PMC6914215 DOI: 10.1039/c9sm00536f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
It was experimentally demonstrated by Migler and his collaborators [Phys. Rev. Lett., 2001, 86, 1023; Langmuir, 2003, 19, 8667] that a strongly confined drop monolayer sheared between two parallel plates can spontaneously develop a flow-oriented drop-chain morphology. Here we show that the formation of the chain-like microstructure is driven by far-field Hele-Shaw quadrupolar interactions between drops, and that drop spacing within chains is controlled by the effective drop repulsion associated with the existence of confinement-induced reversing streamlines, i.e., the swapping trajectory effect. Using direct numerical simulations and an accurate quasi-2D model that incorporates quadrupolar and swapping-trajectory contributions, we analyze microstructural evolution in a monodisperse drop monolayer. Consistent with experimental observations, we find that drop spacing within individual chains is usually uniform. Further analysis shows that at low area fractions all chains have the same spacing, but at higher area fractions there is a large spacing variation from chain to chain. These findings are explained in terms of uncompressed and compressed chains. At low area fractions most chains are uncompressed (spacing equals lst, which is the stable separation of an isolated pair). At higher area fractions compressed chains (with tighter spacing) are formed in a process of chain zipping along y-shaped structural defects. We also discuss the relevance of our findings to other shear-driven systems, such as suspensions of spheres in non-Newtonian fluids.
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Affiliation(s)
- Sagnik Singha
- Department of Mechanical Engineering, Texas Tech University, Box 41021, Lubbock, TX 79409, USA.
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Amoabeng D, Roell D, Clouse KM, Young BA, Velankar SS. A composition-morphology map for particle-filled blends of immiscible thermoplastic polymers. POLYMER 2017. [DOI: 10.1016/j.polymer.2017.04.009] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Mei Y, Li G, Moldenaers P, Cardinaels R. Dynamics of particle-covered droplets in shear flow: unusual breakup and deformation hysteresis. SOFT MATTER 2016; 12:9407-9412. [PMID: 27853801 DOI: 10.1039/c6sm02031c] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The dynamics of droplets exhibiting an elastic interface generated by a percolated network of particle aggregates at the interface is microscopically investigated in a counter rotating shear flow device. The droplet deformation is significantly suppressed by interfacially localized nanoparticles, even at high Ca numbers, resulting in suspension-like behavior at high particle coverage. When the Ca number surpasses a critical value, the particle network locally breaks up, resulting in localized deformability of the interface and breakup dynamics characterized by extremely irregular shapes. Finally, the destruction of the interfacial network results in hysteresis effects in the droplet deformation.
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Affiliation(s)
- Yuan Mei
- Soft Matter Rheology and Technology, Department of Chemical Engineering, KU Leuven, Celestijnenlaan 200F, P. B. 2424, B-3001 Leuven, Belgium. and College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering of China, Sichuan University, Chengdu 610065, China
| | - Guangxian Li
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering of China, Sichuan University, Chengdu 610065, China
| | - Paula Moldenaers
- Soft Matter Rheology and Technology, Department of Chemical Engineering, KU Leuven, Celestijnenlaan 200F, P. B. 2424, B-3001 Leuven, Belgium.
| | - Ruth Cardinaels
- Soft Matter Rheology and Technology, Department of Chemical Engineering, KU Leuven, Celestijnenlaan 200F, P. B. 2424, B-3001 Leuven, Belgium. and Polymer Technology, Department of Mechanical Engineering, TU Eindhoven, P. B. 513, 5600 MB Eindhoven, The Netherlands
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Qian J, Xiao Z, Dong L, Tang D, Li M, Yang Q, Huang Y, Liao X. Morphology and crystallization behavior of PCL/SAN blends containing nanosilica with different surface properties. J Appl Polym Sci 2016. [DOI: 10.1002/app.44157] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Jing Qian
- State Key Laboratory of Polymer Materials Engineering of China, College of Polymer Science and Engineering, Sichuan University; Chengdu 610065 China
| | - Zhilin Xiao
- State Key Laboratory of Polymer Materials Engineering of China, College of Polymer Science and Engineering, Sichuan University; Chengdu 610065 China
| | - Lin Dong
- State Key Laboratory of Polymer Materials Engineering of China, College of Polymer Science and Engineering, Sichuan University; Chengdu 610065 China
| | - Dahang Tang
- State Key Laboratory of Polymer Materials Engineering of China, College of Polymer Science and Engineering, Sichuan University; Chengdu 610065 China
| | - Mengjue Li
- State Key Laboratory of Polymer Materials Engineering of China, College of Polymer Science and Engineering, Sichuan University; Chengdu 610065 China
| | - Qi Yang
- State Key Laboratory of Polymer Materials Engineering of China, College of Polymer Science and Engineering, Sichuan University; Chengdu 610065 China
| | - Yajiang Huang
- State Key Laboratory of Polymer Materials Engineering of China, College of Polymer Science and Engineering, Sichuan University; Chengdu 610065 China
| | - Xia Liao
- State Key Laboratory of Polymer Materials Engineering of China, College of Polymer Science and Engineering, Sichuan University; Chengdu 610065 China
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Xi S, Huang Y, Yang Q, Li G. Compatibilization of PMMA/PC Blends with Different Strategies: Transesterification Catalyst versus Nanoparticles. Ind Eng Chem Res 2014. [DOI: 10.1021/ie5001407] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Shuting Xi
- College
of Polymer Science
and Engineering, State Key Laboratory of Polymer Materials Engineering
of China, Sichuan University, Chengdu 610065, China
| | - Yajiang Huang
- College
of Polymer Science
and Engineering, State Key Laboratory of Polymer Materials Engineering
of China, Sichuan University, Chengdu 610065, China
| | - Qi Yang
- College
of Polymer Science
and Engineering, State Key Laboratory of Polymer Materials Engineering
of China, Sichuan University, Chengdu 610065, China
| | - Guangxian Li
- College
of Polymer Science
and Engineering, State Key Laboratory of Polymer Materials Engineering
of China, Sichuan University, Chengdu 610065, China
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Li Q, Huang Y, Xi S, Yang Q, Li G. Double emulsions of immiscible polymer blends stabilized by interfacially active nanoparticles. AIChE J 2013. [DOI: 10.1002/aic.14173] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Qiong Li
- College of Polymer Science and Engineering; State Key Laboratory of Polymer Materials Engineering of China; Sichuan University; Chengdu; 610065; China
| | - Yajiang Huang
- College of Polymer Science and Engineering; State Key Laboratory of Polymer Materials Engineering of China; Sichuan University; Chengdu; 610065; China
| | - Shuting Xi
- College of Polymer Science and Engineering; State Key Laboratory of Polymer Materials Engineering of China; Sichuan University; Chengdu; 610065; China
| | - Qi Yang
- College of Polymer Science and Engineering; State Key Laboratory of Polymer Materials Engineering of China; Sichuan University; Chengdu; 610065; China
| | - Guangxian Li
- College of Polymer Science and Engineering; State Key Laboratory of Polymer Materials Engineering of China; Sichuan University; Chengdu; 610065; China
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Li P, Huang Y, Kong M, Lv Y, Luo Y, Yang Q, Li G. Fractionated crystallization and morphology of PP/PS blends in the presence of silica nanoparticles with different surface chemistries. Colloid Polym Sci 2013. [DOI: 10.1007/s00396-013-2904-2] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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11
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Improved shape stability of nanosilica-filled PBT fibrils in PS matrix: Effects of accelerated crystallization and enhanced viscoelasticity. POLYMER 2012. [DOI: 10.1016/j.polymer.2012.09.028] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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