Article
Chemistry, Multidisciplinary
Charlie R. Wand, Simon Gibbon, Flor R. Siperstein
Summary: The study found that adsorption of DGEBA is more favorable on hematite surfaces compared to magnetite surfaces, and highly hydroxylated surfaces significantly reduce the binding energy of DGEBA on hematite. The presence of hydroxyl groups increases the mobility of the chains, which may affect the rigidity of the coating.
Article
Physics, Applied
Shilpi Chaudhary, Harsharan Kaur, Harpreet Kaur, Kailash C. Jena
Summary: Advancements in molecularly imprinted biomimetics have led to the development of customizable artificial recognition-based materials for bio/chemo-sensing. This study presents a simple synthesis and analysis of protein-imprinted polymer thin films directly onto a solid support. The use of dopamine as a functional monomer and bovine hemoglobin as a template protein molecule resulted in optimally prepared MIP films for label-free chemical sensing, as demonstrated by vibrational sum frequency generation spectroscopy.
APPLIED PHYSICS LETTERS
(2023)
Review
Chemistry, Physical
Jorn D. Steen, Daniel R. Duijnstee, Wesley R. Browne
Summary: Molecular switching has become a key functionality in addressable materials and surfaces. However, the wide variation in interfaces studied, from single-molecule devices to two-dimensional self-assembled monolayers and thin films, poses challenges in their use and characterization. The low number density of molecules on modified interfaces and the complexity of characterizing molecular function further complicate the analysis. This review discusses the techniques and approaches used for characterizing molecular switches applied to interfaces and emphasizes the importance of understanding the limitations and quirks of specific techniques through the use of model compounds.
SURFACE SCIENCE REPORTS
(2023)
Article
Engineering, Environmental
Assem Elzaabalawy, Shaker A. Meguid
Summary: Ice accretion is a hazardous process where a layer of ice builds up on solid objects. Siloxane-modified nanocomposites have been found to be effective in preventing ice accretion. A nanocomposite with a concentration of 35 wt% silica nanoparticles has been shown to exhibit excellent icephobicity by facilitating droplet rebounding, reducing water nucleation temperature, delaying freezing process, and reducing ice adhesion strength. These nanocomposite coatings also maintain their adhesion strength, wettability, and icephobicity after multiple icing/thaw cycles.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Callum Bannister, Alan Guy, Ralitsa Mihaylova, Joseph Orgill, Stephanie L. Burg, Andrew Parnell, Richard L. Thompson
Summary: The surface properties of epoxy resin coatings are influenced by various factors, including cure conditions, stoichiometry, and induction time. These factors can affect the formation of surface layers, surface roughness, and surface wettability. Stoichiometry has the most significant influence on wetting behavior and void volume, while cure temperature affects the extent of cure. Off-stoichiometry formulation and elevated ambient cure temperature can have effects on the barrier properties of the final coating.
Article
Chemistry, Physical
Canyu Cai, Md Shafiul Azam, Dennis Hore
Summary: Nonlinear vibrational spectroscopy was used to study the temperature-dependent surface structure of poly(dimethylsiloxane) exposed to water and a perfluorinated hydrophobic liquid. It was found that the tilt and twist of the methyl plane increased with temperature in a reversible manner in both environments, attributed to backbone reorganization due to temperature-dependent density changes.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Materials Science, Multidisciplinary
Rishabh D. Guha, Evgeny O. Danilov, Katherine Berkowitz, Oluwatimilehin Oluwajire, Landon R. Grace
Summary: Moisture absorption contributes to the performance degradation of epoxy-based polymer materials. The state of water molecules in crosslinked epoxy depends on their bonding interactions and local environment, which can be controlled through experimental curing schedule. This study investigated different network architectures of crosslinked epoxy matrices cured with varying epoxy:hardener ratios. The correlation between moisture absorption, network morphology, and dielectric properties was established using IR spectroscopy and dielectric readings.
ACS APPLIED POLYMER MATERIALS
(2023)
Article
Chemistry, Physical
Philipp Baumli, Maria D'Acunzi, Katharina Hegner, Abhinav Naga, William S. Y. Wong, Hans-Juergen Butt, Doris Vollmer
Summary: Lubricant-impregnated surfaces are two-component surface coatings that utilize a scaffold to stabilize a fluid lubricant, preventing the attachment of immiscible drops. The depletion of lubricant can be caused by various mechanisms and strategies for replenishing lubricant include spraying, stimuli-responsive release, and built-in reservoirs. Improvements in scaffold design and chemical compatibility can help delay lubricant depletion.
ADVANCES IN COLLOID AND INTERFACE SCIENCE
(2021)
Article
Polymer Science
Mohammadyousef Azimi, Edouard Asselin
Summary: This study aimed to increase the adhesion of High-Density Polyethylene (HDPE) to liquid epoxy (LE) by creating polar functional groups on its surface using different acids. Results show that chlorosulfonic acid and chromic acid significantly increase the adhesion of HDPE to LE, and experimental adhesion values are higher than predicted, especially with increasing surface polarity.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Review
Polymer Science
Ananthu Prasad, Nisa V. Salim, Miran Mozetic, Lekshmi Kailas, Sabu Thomas
Summary: Time of flight-secondary ion mass spectrometry (ToF-SIMS) is a surface sensitive technique that provides specific compound identification of surface molecules. It has become increasingly important for the characterization and utilization of polymers in recent years.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Automation & Control Systems
Jeno Gacs, Zita Vernon, Laszlo Kocsis, Zoltan J. Berenyi, Erzsebet Sara Bogya, Timo Jacob
Summary: The effect of four different plasma parameters on five polymeric substrates was investigated. The polar part and the total surface free energy increased after plasma treatment, while the disperse part either did not change or decreased. Only PPS showed a significant increase in adhesion properties compared to the blank sample. There was no correlation observed between any part of the surface free energy and the adhesion properties.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2022)
Article
Chemistry, Physical
Yosuke Sumiya, Yuta Tsuji, Kazunari Yoshizawa
Summary: This study estimated the shear and tensile adhesive strength of epoxy resin on copper and copper oxide surfaces using quantum chemical calculations. The researchers computed adhesive stress-displacement curves and performed force decomposition analysis to understand the periodic changes in adhesive stress. The findings suggest that the periodicity originates from the DFT contribution. This research provides a useful method for evaluating and predicting adhesive and adherend properties.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2022)
Article
Chemistry, Physical
S. Taktak, N. Ghorbel, H. Hammami, S. Fakhfakh, S. Rondot, O. Jbara
Summary: The present work focuses on investigating the compatibility of aliphatic polyester blends in terms of dielectric and structural properties. Polypropylene/poly(butylene succinate) (PP/PBS) polymer blends with different weight ratios were prepared and studied using broadband dielectric spectroscopy (BDS), atomic force microscope (AFM) with electric mode electrostatic force microscopy (EFM), and differential scanning calorimetry (DSC). The results indicate poor compatibility and immiscibility between the two phases of the polymer blends.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Chemistry, Physical
Thaddeus W. Golbek, Kris Strunge, Adam S. Chatterley, Tobias Weidner
Summary: The adsorption of proteins on nanoparticles differs from that on planar surfaces due to the Coulombic forces between peptides inside the particles.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Construction & Building Technology
Marina Gravit, Boris Klementev, Daria Shabunina
Summary: Cases of fire at oil and gas facilities are assumed to be hydrocarbon fires, characterized by rapidly rising temperatures up to 1093 degrees Celsius and overpressure. Epoxy-based materials are able to provide good fire protection for steel structures, withstanding chemical and climatic impacts.
Article
Chemistry, Multidisciplinary
Xingquan Zou, Shuai Wei, Joshua Jasensky, Minyu Xiao, Qiuming Wang, Charles L. Brooks, Zhan Chen
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2017)
Article
Chemistry, Multidisciplinary
Xiaofeng Han, Jingguo Zheng, Fengming Lin, Kenichi Kuroda, Zhan Chen
Article
Chemistry, Multidisciplinary
Haiye Wang, Joshua Jasensky, Nathan W. Ulrich, Junjie Cheng, Hao Huang, Zhan Chen, Chunju He
Article
Chemistry, Multidisciplinary
McKenna M. Schroeder, Qiuming Wang, Somayesadat Badieyan, Zhan Chen, E. Neil G. Marsh
Article
Chemistry, Medicinal
Yaoxin Li, Duohai Pan, Vishal Nashine, Smeet Deshmukh, Balvinder Vig, Zhan Chen
JOURNAL OF PHARMACEUTICAL SCIENCES
(2018)
Article
Chemistry, Multidisciplinary
Ya-Xuan Zhu, Hao-Ran Jia, Guang-Yu Pan, Nathan W. Ulrich, Zhan Chen, Fu-Gen Wu
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2018)
Article
Chemistry, Multidisciplinary
Minyu Xiao, Joshua Jasensky, Leanna Foster, Kenichi Kuroda, Zhan Chen
Article
Chemistry, Multidisciplinary
Xiaokai Chen, Xiaodong Zhang, Liu-Yuan Xia, Hong-Yin Wang, Zhan Chen, Fu-Gen Wu
Article
Chemistry, Physical
Yaoxin Li, Tadeusz L. Ogorzalek, Shuai Wei, Xiaoxian Zhang, Pei Yang, Joshua Jasensky, Charles L. Brooks, E. Neil G. Marsh, Zhan Chen
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2018)
Article
Chemistry, Multidisciplinary
Minyu Xiao, Shuai Wei, Yaoxin Li, Joshua Jasensky, Junjie Chen, Charles L. Brooks, Zhan Chen
Article
Chemistry, Multidisciplinary
Xingquan Zou, Shuai Wei, Somayesadat Badieyan, McKenna Schroeder, Joshua Jasensky, Charles L. Brooks, E. Neil G. Marsh, Zhan Chen
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2018)
Article
Chemistry, Multidisciplinary
Minyu Xiao, Shuai Wei, Junjie Chen, Jiayi Tian, Charles L. Brooks, E. Neil G. Marsh, Zhan Chen
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2019)
Article
Chemistry, Multidisciplinary
Shuai Wei, Xingquan Zou, Jiayi Tian, Hao Huang, Wen Guo, Zhan Chen
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2019)
Article
Chemistry, Multidisciplinary
Hao Huang, Chengcheng Zhang, Ralph Crisci, Tieyi Lu, Hsiang-Chieh Hung, Md Symon Jahan Sajib, Pranab Sarker, Jinrong Ma, Tao Wei, Shaoyi Jiang, Zhan Chen
Summary: Research has shown that zwitterionic polymer brushes based on TMAO exhibit strong surface hydration, effectively resisting disruptions induced by salts and proteins, thus demonstrating excellent nonfouling performance.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Chemistry, Multidisciplinary
Tieyi Lu, Wen Guo, Prathamesh M. Datar, Yue Xin, E. Neil G. Marsh, Zhan Chen
Summary: Protein adsorption on surfaces plays a critical role in various applications, and studying the molecular behavior of proteins at interfaces is challenging. This research utilized SFG spectroscopy to investigate protein adsorption at the silicone oil/protein solution interface, revealing that the interface was primarily covered by BSA dimers.