Per M. Claesson
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View article: Multiscale analysis of pigment effects on weathering of polyester coatings: from nanoscale chemistry to macroscale performance
Multiscale analysis of pigment effects on weathering of polyester coatings: from nanoscale chemistry to macroscale performance Open
Almost all organic coatings used for corrosion protection contain various types of pigmentation, both for the sake of aesthetics and performance. By focusing on spatially resolved vibrational spectroscopy and electron microscopy, we demons…
View article: Recent findings on lignin-based wear and corrosion resistance coatings
Recent findings on lignin-based wear and corrosion resistance coatings Open
The requirement for sustainable and environmentally friendly materials has led to the exploration of lignin as a potential candidate for protective coatings in various industrial applications. Recent researches demonstrate the feasibility …
View article: Molecular Insights into the Interactions Between Human Serum Albumin and Phospholipid Membranes
Molecular Insights into the Interactions Between Human Serum Albumin and Phospholipid Membranes Open
In this study, molecular dynamics simulations were employed to analyze interactions between phospholipid membranes and human serum albumin (HSA) in the presence of mono- and divalent cations. Two types of membranes, composed of dipalmitoyl…
View article: Molecular Insights into the Interactions Between Human Serum Albumin and Phospholipid Membranes
Molecular Insights into the Interactions Between Human Serum Albumin and Phospholipid Membranes Open
In this study, molecular dynamics simulations were employed to analyze interactions between phospholipid membranes and human serum albumin (HSA) in the presence of mono- and divalent cations. Two types of membranes, composed of dipalmitoyl…
View article: Real-time in-situ coatings corrosion monitoring using machine learning-enhanced triboelectric nanogenerator
Real-time in-situ coatings corrosion monitoring using machine learning-enhanced triboelectric nanogenerator Open
Current methods for monitoring coating corrosion are limited by their inability to provide real-time data and dependence on external power sources. This study presents a novel in-situ corrosion monitoring system using a solid-liquid triboe…
View article: Nanomechanical and nano-FTIR analysis of polyester coil coatings before and after artificial weathering experiments
Nanomechanical and nano-FTIR analysis of polyester coil coatings before and after artificial weathering experiments Open
Local heterogeneities can have significant effects on the performance of anti-corrosion coatings. Even small features can act as initiation points for damage and result in corrosion of the substrate material. Analysis methods with high spa…
View article: Green synergy: Eco-friendly, high-performance anti-corrosion and wear-resistant coatings utilizing organosolv lignin and polydimethylsiloxane
Green synergy: Eco-friendly, high-performance anti-corrosion and wear-resistant coatings utilizing organosolv lignin and polydimethylsiloxane Open
Anti-corrosion and anti-wear coatings provide an effective solution. However, traditional coatings are often fossil-based and contain heavy metals, posing environmental concerns. The drive for eco-friendly coatings has led to the explorati…
View article: Effects of Gas Layer Thickness on Capillary Interactions at Superhydrophobic Surfaces
Effects of Gas Layer Thickness on Capillary Interactions at Superhydrophobic Surfaces Open
Strongly attractive forces act between superhydrophobic surfaces across water due to the formation of a bridging gas capillary. Upon separation, the attraction can range up to tens of micrometers as the gas capillary grows, while gas molec…
View article: The dynamic nature of natural and fatty acid modified calcite surfaces
The dynamic nature of natural and fatty acid modified calcite surfaces Open
Calcium carbonate, particularly in the form of calcite and surface modified calcite, is an abundant mineral widely used in both human-made and biological systems.
View article: A strong enhancement of corrosion and wear resistance of polyurethane-based coating by chemically grafting of organosolv lignin
A strong enhancement of corrosion and wear resistance of polyurethane-based coating by chemically grafting of organosolv lignin Open
Corrosion and wear pose significant challenges to equipment operating in harsh environments. Thus, protective coatings are needed. Anti-corrosion and anti-wear coatings are traditionally fossil-based and often contain environmentally harmf…
View article: Calcite Surfaces Modified with Carboxylic Acids (C<sub>2</sub> to C<sub>18</sub>): Layer Organization, Wettability, Stability, and Molecular Structural Properties
Calcite Surfaces Modified with Carboxylic Acids (C<sub>2</sub> to C<sub>18</sub>): Layer Organization, Wettability, Stability, and Molecular Structural Properties Open
A fundamental understanding of the interactions between mineral surfaces and amphiphilic surface modification agents is needed for better control over the production and uses of mineral fillers. Here, we controlled the carboxylic acid laye…
View article: Effects of Processing‐Induced Contamination on Organic Electronic Devices
Effects of Processing‐Induced Contamination on Organic Electronic Devices Open
Organic semiconductors are a family of pi‐conjugated compounds used in many applications, such as displays, bioelectronics, and thermoelectrics. However, their susceptibility to processing‐induced contamination is not well understood. Here…
View article: Calcite surfaces modified with carboxylic acids (C2 to C18): layer organization, wettability, and stability properties
Calcite surfaces modified with carboxylic acids (C2 to C18): layer organization, wettability, and stability properties Open
A fundamental understanding of the interactions between mineral surfaces and amphiphilic surface modification agents is needed for better control over production and uses of mineral fillers. Here, we controlled the carboxylic acid layer fo…
View article: Improving OFF‐State Bias‐Stress Stability in High‐Mobility Conjugated Polymer Transistors with an Antisolvent Treatment
Improving OFF‐State Bias‐Stress Stability in High‐Mobility Conjugated Polymer Transistors with an Antisolvent Treatment Open
Conjugated polymer field‐effect transistors are emerging as an enabling technology for flexible electronics due to their excellent mechanical properties combined with sufficiently high charge‐carrier mobilities and compatibility with large…
View article: Two different approaches to XPS quantitative analysis of polyelectrolyte adsorption layers
Two different approaches to XPS quantitative analysis of polyelectrolyte adsorption layers Open
X‐ray photoelectron spectroscopy (XPS) was employed to quantify adsorption of polyelectrolytes from aqueous solutions of low ionic strength onto mica, glass, and silica. Silica surfaces were conditioned in base or in acid media as last pre…
View article: Bioinspired Bottlebrush Polymers for Aqueous Boundary Lubrication
Bioinspired Bottlebrush Polymers for Aqueous Boundary Lubrication Open
An extremely efficient lubrication system is achieved in synovial joints by means of bio-lubricants and sophisticated nanostructured surfaces that work together. Molecular bottlebrush structures play crucial roles for this superior tribosy…
View article: Phospholipids and Hyaluronan: From Molecular Interactions to Nano- and Macroscale Friction
Phospholipids and Hyaluronan: From Molecular Interactions to Nano- and Macroscale Friction Open
Phospholipids and hyaluronan are two key biomolecules that contribute to the excellent lubrication of articular joints. Phospholipids alone and in combination with hyaluronan have also displayed low friction forces on smooth surfaces in mi…
View article: Dynamic self-stabilization in the electronic and nanomechanical properties of an organic polymer semiconductor
Dynamic self-stabilization in the electronic and nanomechanical properties of an organic polymer semiconductor Open
The field of organic electronics has profited from the discovery of new conjugated semiconducting polymers that have molecular backbones which exhibit resilience to conformational fluctuations, accompanied by charge carrier mobilities that…
View article: Mechanical Properties of Organic Electronic Polymers on the Nanoscale
Mechanical Properties of Organic Electronic Polymers on the Nanoscale Open
Organic semiconducting polymers have attractive electronic, optical, and mechanical properties that make them materials of choice for large area flexible electronic devices. In these devices, the electronically active polymer components ar…
View article: Surface-Modified and Unmodified Calcite: Effects of Water and Saturated Aqueous Octanoic Acid Droplets on Stability and Saturated Fatty Acid Layer Organization
Surface-Modified and Unmodified Calcite: Effects of Water and Saturated Aqueous Octanoic Acid Droplets on Stability and Saturated Fatty Acid Layer Organization Open
A profound understanding of the properties of unmodified and saturated fatty acid-modified calcite surfaces is essential for elucidating their resistance and stability in the presence of water droplets. Additional insights can be obtained …
View article: Albumin–Hyaluronan Interactions: Influence of Ionic Composition Probed by Molecular Dynamics
Albumin–Hyaluronan Interactions: Influence of Ionic Composition Probed by Molecular Dynamics Open
The lubrication mechanism in synovial fluid and joints is not yet fully understood. Nevertheless, intermolecular interactions between various neutral and ionic species including large macromolecular systems and simple inorganic ions are th…
View article: Local Wear of Catechol-Containing Diblock Copolymer Layers: Wear Volume, Stick–Slip, and Nanomechanical Changes
Local Wear of Catechol-Containing Diblock Copolymer Layers: Wear Volume, Stick–Slip, and Nanomechanical Changes Open
Polymers containing catechol groups have gained a large interest, as they mimic an essential feature of mussel adhesive proteins that allow strong binding to a large variety of surfaces under water. This feature has made this class of poly…
View article: Nanoscale Wear and Mechanical Properties of Calcite: Effects of Stearic Acid Modification and Water Vapor
Nanoscale Wear and Mechanical Properties of Calcite: Effects of Stearic Acid Modification and Water Vapor Open
Understanding the wear of mineral fillers is crucial for controlling industrial processes, and in the present work, we examine the wear resistance and nanomechanical properties of bare calcite and stearic acid-modified calcite surfaces und…
View article: Temperature-Dependent Nanomechanical Properties of Adsorbed Poly-NIPAm Microgel Particles Immersed in Water
Temperature-Dependent Nanomechanical Properties of Adsorbed Poly-NIPAm Microgel Particles Immersed in Water Open
The temperature dependence of nanomechanical properties of adsorbed poly-NIPAm microgel particles prepared by a semibatch polymerization process was investigated in an aqueous environment via indentation-based atomic force microscopy (AFM)…
View article: Nano-scale mechanical and wear properties of a corrosion protective coating reinforced by cellulose nanocrystals – Initiation of coating degradation
Nano-scale mechanical and wear properties of a corrosion protective coating reinforced by cellulose nanocrystals – Initiation of coating degradation Open
Organic coatings are commonly used for protection of substrate surfaces like metals and wood. In most cases they fulfil their purpose by acting as a barrier against unwanted substances such as oxygen, water or corrosive ions. However, with…