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Role of Chemical Surface Preference in Translational and Reorientational Nanoconfinement

Guo, Hao
http://rave.ohiolink.edu/etdc/view?acc_num=akron1533060989864433

Abstract Details

2018, Master of Science in Polymer Engineering, University of Akron, Polymer Engineering.
The polymer thin film and colloids has drawn a lot of attention during several decades. Due to the existence of interfaces, chain dynamic could be greatly alternated by nanoconfinement effect. It becomes more interesting when this confinement is employed to polymer chains with side group such as methylene, ester methyl group, and phenyl ring, which will exhibit a chemical segregation preference near interface. Here, we implement molecular dynamics simulations of Kremer-Grest polymer with side group bead to manifest its segregation preference and corresponding gradient relaxation behavior. Besides, by fitting a modified Cosh-form function, we get a decoupling exponent which represents a power law relationship between film dynamics and bulk for high and low temperature regimes. This temperature independent and film thickness dependent exponent will help us understand a deeper meaning of nanoconfinement effect. The onset condition and timescale of this decoupling dynamics is convoluted with glass transition temperature agreement.
David Simmons, Ph.D. (Advisor)
Mesfin Tsige, Ph.D. (Committee Member)
Younjin Min, Ph.D. (Committee Member)
53 p.
Condensed Matter Physics; Molecular Physics; Polymer Chemistry
glass transition, nanoconfinement, interfacial dynamics, surface segregation preference, molecular dynamics simulation

Recommended Citations

Citations

  • Guo, H. (2018). Role of Chemical Surface Preference in Translational and Reorientational Nanoconfinement [Master's thesis, University of Akron]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=akron1533060989864433

    APA Style (7th edition)

  • Guo, Hao. Role of Chemical Surface Preference in Translational and Reorientational Nanoconfinement. 2018. University of Akron, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=akron1533060989864433.

    MLA Style (8th edition)

  • Guo, Hao. "Role of Chemical Surface Preference in Translational and Reorientational Nanoconfinement." Master's thesis, University of Akron, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=akron1533060989864433

    Chicago Manual of Style (17th edition)

akron1533060989864433
162
© 2018, all rights reserved.
This open access ETD is published by University of Akron and OhioLINK.