English
简体中文
Русский
إنجليزي
Enhancing wettability and water resistance of coatings using tung oleic acid-based gemini wetting agent via Fischer esterification
2024-10-14 08:50
Researchers found that the newly developed gemini-based wetting agent improves surface tension and water resistance.
As societal awareness of environmental concerns grows, there is a gradual transition towards more environmentally friendly aqueous products, replacing traditional solvent-based ones. However, owing to its short hydrophobic chain segment, polyether defoamer has limitations, including a narrow field of use, poor defoaming ability, and a low defoaming rate. This study employed Fischer esterification to graft tung oil acid (i.e., eleostearic acid) onto 2,5,8,11-tetramethyl-5-decyne-4,7-diol, ethoxylated (TDDE) using p-toluenesulfonic acid as a catalyst.
The resulting product, polyether alkynyl alcohol wetting agent (ETDDE), consisted of a tung oil monomer chain (hydrophobic part) and a polyether chain (hydrophilic part). The successful synthesis of ETDDE was confirmed through infrared spectroscopy analysis, gel permeation chromatography testing, and acid value determination. The results showed that the surface tension, defoaming ability, coating gloss, wettability, and water resistance of ETDDE improved with the ratio of eleostearic acid to TDDE.
Progress in Organic Coatings Volume 197, December 2024, 108779
source：european-coatings
More Hzinfo
- Recommended products: YIPIN PIGMENTS YIPIN®Ultramarine Pigments
- This product meets ISO788:1974(Ultramarine pigments for paints), it could be widelyused in range of plastics,rubber,paints,coating,soap,detergent powder,artist pigments, inks and papers.
-
2024-10-29
- An octopus-inspired adhesive performs well in wet conditions
- ？In a study published in Advanced Science, researchers developed an adhesive inspired by octopuses that adheres strongly to various surfaces in wet environments and underwater
-
2024-10-29
- Enhancing the functionality of biodegradable Mg–Zn–Mn alloys using polylactic acid (PLA) coating for temporary implants
- Researchers found that the functionality of Mg–Zn–Mn alloys can be enhanced by using PLA coating for temporary implants.
-
2024-10-29
