Relaxation behavior of polymer thin films: Effects of free surface, buried interface, and geometrical confinement

B Li, S Zhang, JS Andre, Z Chen - Progress in Polymer Science, 2021 - Elsevier
The glass transition temperature (T g) of polymer thin films, one of the most important
parameters to characterize the relaxation behavior of polymer chains in a thin film, has been …

Combined X-ray Reflectivity and Infrared Study of the Effect of Hydrogen Bonding of the OH Group on the Relaxation Behavior in Ultrathin Polyvinylphenol Films on …

T Sharma, S Kashihara, Y Yamasaki… - The Journal of …, 2023 - ACS Publications
Utilizing X-ray reflectivity and infrared reflection absorption spectroscopy (IR-RAS), we have
investigated the thermal expansion and contraction of ultrathin polyvinylphenol (PVPh) films …

Thickness and Substrate Dependences of the Relaxation of Spin-Coated Polymethyl Methacrylate Ultrathin Films Supported on SiO2 and SiOH Substrates

T Sharma, M Konishi, K Sekiya, I Takahashi - Macromolecules, 2021 - ACS Publications
The relaxation of ultrathin polymethyl methacrylate (PMMA) films, which were spin-coated on
SiO2 and SiOH substrates, was examined with different film thicknesses. In the glassy state …

Recent progresses in nanometer scale analysis of buried layers and interfaces in thin films by X-rays and Neutrons

K Stoev, K Sakurai - Analytical Sciences, 2020 - jstage.jst.go.jp
In the early 1960s, scientists achieved the breakthroughs in the fields of solid surfaces and
artificial layered structures. The advancement of surface science has been supported by the …

Thickness Changes in Temperature-Responsive Poly(N-isopropylacrylamide) Ultrathin Films under Ambient Conditions

Y Liu, K Sakurai - ACS omega, 2019 - ACS Publications
In this paper, we report detailed experimental observations of unusual changes in the
thickness of solid poly (N-isopropylacrylamide)(PNIPAM) ultrathin films, which are well …

Fine-structure analysis of perhydropolysilazane-derived nano layers in deep-buried condition using polarized neutron reflectometry

K Akutsu-Suyama, H Kira, N Miyata, T Hanashima… - Polymers, 2020 - mdpi.com
A large background scattering originating from the sample matrix is a major obstacle for fine-
structure analysis of a nanometric layer buried in a bulk material. As polarization analysis …

Effect of molecular architecture on conformational relaxation of polymer chains at interfaces

HK Nguyen, D Kawaguchi… - Macromolecular rapid …, 2020 - Wiley Online Library
Dynamics of polymer chains near an interface with an inorganic material are believed to
strongly affect the physical properties of polymers in nanocomposites and thin films. An …

Correlation of physical aging and glass transition temperatures in ultrathin polystyrene films supported on SiO2

T Sharma, Y Nishio, Y Tamano, H Sato, I Takahashi - Polymer, 2021 - Elsevier
This study examined the effects of the aging temperature (T age) on structural relaxation in
ultrathin-supported polystyrene (PS) films with thickness~ 0.2 Rg. X-ray reflectivity and …

A Review on Thickness Dependence of Surface Free Energy in Ultrathin Polymer Films

H Kiaei, A Abbasian - Basparesh, 2023 - basparesh.ippi.ac.ir
In recent years, thin and ultrathin polymer films coated on solid surfaces have been widely
used in various industries such as coatings, adhesives, membranes, sensors, etc. However …

Rheological analysis of ultra-thin polymer films: viscoelastic properties investigation from improved experimental inflation technique coupled with interfeometric …

A Shpiruk - 2022 - theses.hal.science
The thesis is focused on the investigations of the behavior of ultrathin polymer films and in
particular on their mechanical properties under different environmental conditions such as …