Direct visualization and characterization of interfacially adsorbed polymer atop nanoparticles and within nanocomposites

K Randazzo, M Bartkiewicz, B Graczykowski… - …, 2021 - ACS Publications
Irreversible adsorption at polymer/substrate interfaces has been reported to influence glassy
properties in thin films. However, consideration has yet to be extended to the nanocomposite …

Exchange lifetimes of the bound polymer layer on silica nanoparticles

AM Jimenez, D Zhao, K Misquitta, J Jestin… - ACS Macro …, 2019 - ACS Publications
Understanding the structure and dynamics of the bound polymer layer (BL) that forms on
favorably interacting nanoparticles (NPs) is critical to revealing the mechanisms responsible …

Long-term aging in miscible polymer nanocomposites

M Jhalaria, AM Jimenez, R Mathur, MC Tekell… - …, 2022 - ACS Publications
We find that the initial, solvent-cast state of nanoparticles (NPs) in a polymer matrix
temporally evolves during thermal annealing such that, at steady state, NPs maximize their …

Review and reproducibility of forming adsorbed layers from solvent washing of melt annealed films

MF Thees, JA McGuire, CB Roth - Soft Matter, 2020 - pubs.rsc.org
Recent studies suggest chain adsorption in the melt may be responsible for a number of
property changes in thin films by making correlations between the residual adsorbed layer …

Glass transition of the surface monolayer of polystyrene films with different film thicknesses and supporting surfaces

J Yan, J Xu, LT Weng, F Wang, X Wang, H Yuan… - …, 2022 - ACS Publications
Surface glass-transition temperature (T gsurf) and transition width (W) within 1 nm of the
surface were measured by monitoring a qualitative change in the contact angle or density of …

Intensified Nonequilibrium Effect of Polymer Nanocomposites with Decreasing Nanoparticle Size

SM Oh, SY Kim - ACS Applied Materials & Interfaces, 2023 - ACS Publications
What are the most important and decisive parameters that determine the structure and the
property of polymer nanocomposites (PNCs)? Previous studies answered that controlling …

Direct observation of conformational relaxation of polymer chains at surfaces

HK Nguyen, M Inutsuka, D Kawaguchi… - ACS Macro …, 2018 - ACS Publications
Sum-frequency generation spectroscopy was employed to follow the conformation evolution
of polystyrene chains at the surface of a spin-coated film in a temperature-ramping mode as …

Viscosity and fragility of confined polymer nanocomposites: a tale of two interfaces

N Das, N Begam, M Ibrahim, S Chandran… - Nanoscale, 2019 - pubs.rsc.org
Viscosity and fragility are key parameters determining the processability and thermo-
mechanical stability of glassy polymers and polymer nanocomposites (PNCs). In confined …

Tg Confinement Effect of Random Copolymers of 4-tert-Butylstyrene and 4-Acetoxystyrene with Different Compositions

T Wang, J Yan, H Yuan, J Xu, HY Lam, X Yu… - ACS Macro …, 2019 - ACS Publications
We observe that the T g confinement effect of polymer films can saturate with polymer–
substrate interaction. Thickness dependences of the glass transition temperature, T g (h 0) …

Natural rubber–SiO 2 nanohybrids: interface structures and dynamics

MA Sattar, AS Nair, PJ Xavier, A Patnaik - Soft Matter, 2019 - pubs.rsc.org
Homogeneous dispersion of silica nanoparticles (SiO2 NPs) in natural rubber (NR) is a key
challenge for engineering high-performance nanocomposites and elucidation of their …