This article presents the results of studying the disaggregation of titanium dioxide in water-dispersion compositions based on an acrylic film-forming agent under the action of a surfactant. The possibility of using polyether siloxane copolymer (PC) and sodium polyacrylate (NaPA) in paint and varnish compositions as modifying additives of the dispersing effect is proved. The correlation between the dispersing effect of surfactants and the amount of their adsorption on the pigment is proved. NaPA, which provides a greater reduction in adsorption strength, demonstrates a greater dispersing effect than PC. It was found that the larger the size of the aggregates of pigment particles, the greater the disjoining pressure created by the surfactant. An equation is derived that generalizes the cumulative contribution of surfactant concentration and the content of the film-forming agent in suspensions to the average particle diameter of pigment. The introduction of NaPA in the amount of 0.25 g/dm into the paint allows the rate of acid corrosion to be reduced by 2 times, the number of pores in the coating to be decreased, and the adhesion of the coating to be significantly increased (by 2 points according to ISO 11845: 2020).
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8912600 | PMC |
| http://dx.doi.org/10.3390/polym14050996 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Postbiotic-biosynthesized silver nanoparticles anchored on covalent organic frameworks integrated into carboxymethyl chitosan-based film for enhancing antibacterial packaging.
Int J Biol Macromol
December 2024
Key Laboratory of Dairy Science, Ministry of Education, College of Food Science, Northeast Agricultural University, Harbin 150030, China. Electronic address:
Food packaging plays a vital role in guaranteeing the quality and safety of fresh products during the storage and distribution. Carboxymethyl chitosan (CMCS) is identified as a promising polymer for food packaging film owing to its film-forming ability, non-toxicity, and biodegradability. Nevertheless, the practical applications of pure CMCS film usually suffer from some limits owing to its poor antibacterial effect and mechanical strength.
View Article and Find Full Text PDFDressing membrane composites of PVA/chitosan/MgO nanoparticles for wound healing applications in rat model.
Naunyn Schmiedebergs Arch Pharmacol
December 2024
Biophysics Department, Faculty of Science, Cairo University, Giza, Egypt.
Chitosan (CS) has excellent film-forming properties; unfortunately, its use as a film wound dressing is limited because of its weak mechanical properties, especially in its wet state. For this reason, modifications with different materials are investigated in this study. The aim of this work was the combination of chitosan with poly (vinyl alcohol) (PVA), magnesium oxide nanoparticles (MgO), and glycerol as a plasticizer agent which can strengthen CS films, increase their flexibility, and enhance their resistance to microbes.
View Article and Find Full Text PDFExtraction of Purple Prickly Pear () Mucilage by Microfiltration, Composition, and Physicochemical Characteristics.
Polymers (Basel)
November 2024
Instituto Politécnico Nacional, Escuela Nacional de Ciencias Biológicas, Wilfrido Massieu s/n, U.P. Adolfo López Mateos, Gustavo A. Madero, Ciudad de México CP 07738, Mexico.
Mucilages are valuable to the food industry, but the solvents used to extract and concentrate them are detrimental to the environment. Therefore, environmentally friendly technologies that preserve the properties of biopolymers and reduce the use of solvents are being sought. In this work, the mucilage of (mesocarp-endocarp) was extracted by two methods: In the first one, the pulp from the mesocarp-endocarp was extracted by ethanol precipitation and centrifugation cycles, then dried at room temperature.
View Article and Find Full Text PDFStructural Similarity-Induced Inter-Component Interaction in Silicone Polymer-Based Composite Sunscreen Film for Enhanced UV Protection.
Polymers (Basel)
November 2024
Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical & Material Engineering, Jiangnan University, Wuxi 214122, China.
Film-forming agents are key ingredients in achieving long-lasting and effective sun protection by sunscreens. However, studies on the synergistic effects of film-forming agents with different properties as well as the interaction between film-forming agents and powders are scarce, restricting the development of sunscreens with strong ultraviolet (UV)-shielding effects. Herein, we innovatively adopt polysiloxane-15 as the soft film, trimethylsiloxysilicate as the hard film, and vinyl dimethicone/methicone silsesquioxane crosspolymer as the functional powder to construct a co-assembled sunscreen film, and we investigate the property-enhancing effects of the sunscreen film as well as the interaction between the silicone polymer-based film-forming agents and functional powder therein.
View Article and Find Full Text PDFSilk Fibroin Seed Coatings: Towards Sustainable Seed Protection and Enhanced Growth.
Polymers (Basel)
November 2024
School of Physical Science and Technology, ShanghaiTech University, 393 Middle Huaxia Road, Shanghai 201210, China.
Seed coating technology is vital in agriculture, enhancing seed protection and growth. However, conventional coatings often include chemical fungicides that pose environmental risks, highlighting the need for sustainable alternatives. This study explores silk fibroin (SF), a natural biopolymer with excellent film-forming properties, as a potential seed coating agent, addressing its antimicrobial limitations by combining it with the commercial agent CRUISER and the antimicrobial peptide Nisin.
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!