A new methodology for quantitative characterization of the coalescence process of waterborne polymer dispersion (latex) particles by environmental scanning electron microscopy (ESEM) is proposed. The experimental setup has been developed to provide reproducible latex monolayer depositions, optimized contrast of the latex particles, and a reliable readout of the sample temperature. Quantification of the coalescence process under dry conditions has been performed by image processing based on evaluation of the image autocorrelation function. As a proof of concept the coalescence of two latexes with known and differing glass transition temperatures has been measured. It has been shown that a reproducibility of better than 1.5 °C can be obtained for the measurement of the coalescence temperature.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1021/am300971v | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
High temperature QDs organization and re-crystallization in glass supported MgO QDs doped PMMA film.
Sci Rep
January 2025
Condensed Matter Physics & Nanoscience Research Laboratory, Department of Physics and Material Science, Madan Mohan Malaviya University of Technology, Gorakhpur, 273010, U.P, India.
Article Synopsis
- The study focuses on creating composite films of poly (methylmethacrylate) (PMMA) blended with magnesium oxide quantum dots (MgO QDs) at varying concentrations, and the films were annealed at 130°C for different durations to observe changes in their properties.
- Analysis revealed that the initial crystallinity of the PMMA films decreased with annealing but slightly improved with the diffusion and coalescence of MgO QDs, leading to the formation of larger clusters that influenced the films' structural properties.
- The research highlights the significance of temperature and molecular forces in the evolution of the film's morphology and stability, demonstrating unique energy dissipation mechanisms and the complex interplay of inter- and intra
Development and characterization of bigel systems as carriers for thyme essential oil utilizing hydrogel from chicken processing by-products for food applications.
Int J Biol Macromol
December 2024
Food and Nutritional Sciences Program, North Carolina Agricultural and Technical State University, Greensboro, NC, USA.
A chicken protein hydrogel (HG) was enzymatically prepared and blended with a carnauba wax-based oleogel (OG) to form bigels (BG) in ratios of 50:50 to 90:10. These systems were infused with thyme essential oil (TEO) at 0.5 %, 1 %, and 2 % v/v to harness its antioxidant properties.
View Article and Find Full Text PDFStudies on Morphological Evolution of Gravure-Printed ZnO Thin Films Induced by Low-Temperature Vapor Post-Treatment.
Nanomaterials (Basel)
December 2024
Italian National Agency for New Technologies, Energy and Sustainable Economic Development (ENEA), Portici Research Centre, P.le E. Fermi 1, Portici, 80055 Naples, Italy.
In recent years, the morphology control of semiconductor nanomaterials has been attracting increasing attention toward maximizing their functional properties and reaching their end use in real-world devices. However, the development of easy and cost-effective methods for preparing large-scale patterned semiconductor structures on flexible temperature-sensitive substrates remains ever in demand. In this study, vapor post-treatment (VPT) is investigated as a potential, simple and low-cost post-preparative method to morphologically modify gravure-printed zinc oxide (ZnO) nanoparticulate thin films at low temperatures.
View Article and Find Full Text PDFEffect of post heat treatment on microstructure and mechanical properties of hot-rolled AA2017 aluminum alloy.
Heliyon
December 2024
Department of Mechanical, Chemical and Material Engineering, University of Cagliari, Via Marengo 2, 09123, Cagliari, Italy.
This study investigates the effects of heat treatment, involving solubilization and aging, on the microstructure of AA2017-T451 aluminum alloy. Samples of 4 mm thick rolled plate of AA2017 underwent solution treatment at 500 °C for two different durations, namely 2 h and 6 h, followed by either water quenching (WQ) or air quenching (AQ). Subsequently, they were artificially aged (AA) at 175 °C for 8 h.
View Article and Find Full Text PDFUnravelling the Effect of Oxygen on the Sintering Mechanism of Pt/CeO in the CO Oxidation Reaction.
J Phys Chem Lett
December 2024
Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China.
Sintering significantly contributes to the deactivation of supported metal catalysts under reaction conditions, influenced by various factors, including temperature, atmosphere, and metal-support interactions. The sintering mechanism under the reaction conditions remains complex and ambiguous. This study delves into the sintering behavior of platinum on CeO under CO oxidation conditions, mainly employing transmission electron microscopy to elucidate the effects of different gas components on the sintering mechanism at elevated temperatures.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!