Aug 2026· Langmuir· Vol 42 33, pp.
24553-24561
· 0 citations· 88 references
Medicine
Abstract
Polymer adsorption at solid/liquid interfaces plays a crucial role in many applications, yet the molecular pathway of adsorption remains difficult to resolve experimentally. Here, we investigated the adsorption of poly(methyl methacrylate) (PMMA) and polystyrene (PS) from solution onto silica using in situ, real-time sum frequency generation vibrational spectroscopy. PMMA adsorption proceeds through multiple steps accompanied by changes in molecular orientation. Ester side chains first adsorb onto silica via hydrogen-bonding interactions with silanol groups and adopt a preferred interfacial orientation. This is followed by adsorption and reorientation of chain-end methyl groups and backbone methylene groups, revealing a sequential, functional-group-specific adsorption pathway. In contrast, PS, which lacks hydrogen-bonding interactions with silica, exhibits markedly slower adsorption under otherwise comparable conditions. These results demonstrate that interfacial hydrogen-bonding determines both adsorption kinetics and the molecular structure of the adsorbed layer. This study provides a functional-group-resolved view of polymer adsorption from solution and offers molecular-level insight into the design of polymer interfaces.
Using atomic force microscopy, we investigated crystallization in equilibrated layers of adsorbed poly(l-lactic acid) (PLLA) chains on silicon wafers. The resulting lamellar crystals exhibited a predominant edge-on orientation. With increasing molecular weight, this tendency became even more pronounced. Complementary...
De-Cai Lin, Bing-Long Hua, Lan Wang et al.· Macromolecules· 0 citations
Engineering the electrode–electrolyte interface has emerged as a critical strategy to overcome sluggish kinetics of alkaline hydrogen evolution reaction (HER). However, the dynamic and complex nature of the double electric layer makes mechanistic understanding at the molecular level and rational interfacial regulatio...
Yi-Long Zhao, Yunxuan Ding, Wenlong Li et al.· Journal of the American Chem...· 0 citations
Protein adsorption at solid–liquid interfaces plays a crucial role in many biological and technological processes, including the design of biomaterials, biosensor performance, and biocatalysis. Understanding how proteins interact with surfaces is essential for controlling biofouling, optimizing medical implants, and...
Marius Fiedler, Thomas Waluga, Irina Smirnova et al.· Journal of Physical Chemistr...· 0 citations
Boundary-lubrication additives protect steel surfaces through the formation of adsorbed molecular films that reduce direct surface contact. Among such compounds, n-alkylamines provide a simple model system for investigating relationships between molecular structure, adsorption thermodynamics, and film organization at s...
Patrick A. Bonnaud, Tomoyuki Kinjo, Norikazu Sato et al.· Langmuir· 0 citations
HYPOTHESIS
Covalent grafting of linear hydrocarbon chains onto carbon surfaces can provide a controllable route to hydrophobic interfaces, in which chain length governs surface energetics and liquid repellency while improving coating robustness relative to non-covalent hydrophobization approaches. This fluorine-free st...
Irene Sinisgalli, Meike Rijsdijk, Rik van Gorp et al.· Journal of Colloid and Inter...· 0 citations
The separation of silicate minerals with similar crystal structures requires precise interfacial regulation. In this work, a cationizable surfactant, N-Dodecyl-β-Amino-Methyl-2-Methylpropanoate (DAMM), was synthesized to modulate solid-liquid and gas-liquid interfaces. Microflotation results showed a recovery differenc...
