Structure of the Poly (methyl methacrylate) Adsorbed Layer Determined by the Surface Chemistry of the Substrate

W Ren, Y Hong, H Wei, J Xu, C Zhang, X Zhou… - …, 2023 - ACS Publications
The adsorbed polymer layer on the inorganic solid surface is crucial in improving the
physical properties of composite nanomaterials; therefore, the properties could be tuned by …

Flattened chains dominate the adsorption dynamics of loosely adsorbed chains on modified planar substrates

J Xu, L Bai, W Ren, H Zhu, X Zhou, C Zhang, X Wang - Soft Matter, 2024 - pubs.rsc.org
Herein, the adsorption of polystyrene (PS) on phenyl-modified SiO2–Si substrates was
investigated. Different from those for PS adsorption on a neat SiO2–Si substrate, the growth …

Open Questions that Can Bridge Intermolecular Interactions and Macroscopic Wetting/Dewetting Behaviors of Thin Films

ES Petek, R Katsumata - Macromolecular Chemistry and …, 2023 - Wiley Online Library
Polymer films and coatings are ubiquitous in nanoscale applications where confined
macromolecules experience greater interfacial effects, causing deviations from bulk material …

Thickness dependence of contact angles in multilayered ultrathin polymer films

ES Petek, R Katsumata - Macromolecules, 2022 - ACS Publications
The wetting behavior of ultrathin polymer films (< 100 nm) is systematically studied via
dynamic contact angle measurements on a model bilayer system of cross-linked polystyrene …

Eliminating the Tg-Confinement Effect in Polystyrene Films: Extraordinary Impact of a 2 mol % 2-Ethylhexyl Acrylate Comonomer

T Wang, S Hu, S Zhang, A Peera, J Reffner… - …, 2022 - ACS Publications
Nanoconfined polystyrene (PS) films exhibit substantial reductions in glass transition
temperature (T g) from bulk T g. By incorporating 2–6 mol% 2-ethylhexyl acrylate (EHA) into …

Reducing the bulk fragility and suppressing the fragility-confinement effect in polystyrene with very low levels of 2-ethylhexyl acrylate comonomer

T Wang, A Peera, J Reffner, JM Torkelson - Macromolecules, 2023 - ACS Publications
The effects of nanoconfinement on the glass-transition temperature (T g) and fragility index
(m) of thin polymer films, eg, polystyrene (PS), can be substantial. We recently demonstrated …

[HTML][HTML] Interlaminar fracture toughness of carbon fibre composites with electrospun nanofibrous interleaves of polystyrene and cellulose nanocrystals

K Kanari, MR Wisnom, R Harniman… - Journal of Materials …, 2022 - Springer
Polystyrene nanofibres reinforced with cellulose nanocrystals have been produced by
electrospinning. Two different orientations of the nanofibres were produced, namely aligned …

[HTML][HTML] Exploring the Molecular Origin for the Long-Range Propagation of the Substrate Effect in Unentangled Poly (methyl methacrylate) Films

J Xu, X Guo, H Guo, Y Zhang, X Wang - Polymers, 2023 - mdpi.com
The polymer/substrate interface plays a significant role in the dynamics of nanoconfined
polymers because of its suppression on polymer mobility and its long-range propagation …

Rigid amorphous fraction in isotactic polystyrene induced by cold crystallization: Characterization by differential scanning calorimetry and ellipsometry

B Chen, B Feng, T Wang… - Journal of Polymer …, 2023 - Wiley Online Library
Rigid amorphous fraction (RAF) in bulk and thin‐film states of isotactic polystyrene (iPS) was
studied as a function of crystalline fraction (CF). The CF increased with isothermal cold …

Interfacial molecular structure and orientation evolution of the polystyrene under confinement during annealing revealed by sum frequency generation vibrational …

M Zhang, X Hu, Z Wang, D Hou, L Hu, B Li, G Zheng… - Surface Science, 2024 - Elsevier
The geometrical confinement directly affects many crucial properties of polymer thin films by
interfacial interactions. A key to understanding the role of these interfacial interactions is to …