How to improve plastic surface water contact angle?
Best insight from top research papers
To improve the water contact angle of plastic surfaces, various methods have been explored. One approach is the use of surface treatment techniques. For example, UV irradiation has been found to significantly decrease the water contact angle of polymethylmethacrylate (PMMA) surfaces, with the effect increasing over time . Another method involves the addition of fluorine elements to the surface, which can enhance hydrophobicity. However, it is important to balance the fluorine content to avoid compromising other performance characteristics of the plastic . Surface modification using side-chain crystalline block copolymers (SCCBC) has also been investigated, showing promising results in enhancing adhesive properties and hydrophilicity of polypropylene (PP) surfaces . Additionally, a simple and effective method involves coating plastics with a perfluoropolyether (PFPE) and then irradiating with UV/Ozone, resulting in simultaneous hydrophilicity and oleophobicity . Finally, the formation of micro-structures with fractal patterns on the mold surface has been shown to increase the water contact angle of biomass plastic moldings .
Answers from top 4 papers
More filters
| Papers (4) | Insight |
|---|---|
| The paper provides a method to improve the water contact angle of polypropylene (PP) by using a side-chain crystalline block copolymer (SCCBC) through a simple dipping process. | |
| The paper provides a method to improve plastic surface water contact angle by coating plastics with perfluoropolyether (PFPE) and then irradiating them with UV/Ozone. This introduces oxygen-containing polar groups on the plastic surfaces, making them hydrophilic. | |
| The paper discusses two surface treatment methods, UV irradiation and IPA rinsing, that can be used to improve the water contact angle of a plastic surface. | |
2 Citations | The provided paper is about improving the water contact angle for a coated steel substrate. It does not provide information on how to improve the water contact angle for a plastic surface. |
Related Questions
Has nanostructure surface modifications of polymer fibres been used to obtain superhydrophobic properties?5 answersNanostructure surface modifications of polymer fibers have indeed been utilized to achieve superhydrophobic properties. Various studies have explored this approach using different methods and materials. For instance, the development of superhydrophobic and superoleophobic coatings on flexible polyethylene films involved the use of low surface energy mixtures of silanes/siloxanes or fluoropolymers with appropriate nanoparticles to create superhydrophobic surfaces. Similarly, the treatment of Sansevieria trifasciata fibers with silica nanoparticles and fluorosilane resulted in superhydrophobic properties, significantly enhancing their hydrophobicity. Additionally, the creation of superhydrophobic and photocatalytic composite fiber materials using polystyrene polydimethylsiloxane and graphitic nitride showcased the potential for self-cleaning surfaces with enhanced hydrophobicity. These studies collectively demonstrate the effectiveness of nanostructure surface modifications in achieving superhydrophobic properties in polymer fibers.
How to increase the adhesion between copper and polyimide?5 answersTo increase the adhesion between copper and polyimide, several approaches have been explored. One method is to introduce adhesion-promoting components such as benzimidazole and siloxane structures to the polyimide. These components help in the formation of Cu complexes and provide flexibility to the polyimide, resulting in improved adhesion strength. Another approach is to utilize heterocyclic compounds additives containing amino and hydroxyl groups as adhesion promoters. These additives have shown promising results in enhancing the adhesion strength between copper and polyimide. Additionally, the introduction of ether bonds and the control of flexibility through the use of specific monomers have been found to positively influence the adhesion between polyimide and copper. Overall, these strategies aim to improve the reliability and adhesion properties of polyimide in applications such as fan-out wafer-level packaging (FOWLP) for high-frequency communication.
How does PEG reduce the contact angle of water?5 answersPEG reduces the contact angle of water by creating a surface with protein-repulsive properties. PEG is highly compatible with water and exhibits strong incompatibility with other water-soluble substances, resulting in excluded volume effects. When PEG is immobilized on material surfaces through covalent grafting, it forms stable and uniform self-assembled monolayers (SAMs). These PEGylated surfaces have a reduced water contact angle and exhibit protein-repulsive properties. PEG also functions as an osmotic regulator, affecting the hydration level of dough and its physical properties. The addition of PEG to dough improves its machinability by reducing stickiness. Overall, PEG's ability to reduce the contact angle of water is attributed to its protein-repulsive properties and its influence on the hydration and physical properties of materials.
Does the crystallinity of the starch film affect the water contact angle?3 answersThe crystallinity of the starch film does affect the water contact angle. Films with higher crystallinity have a lower water contact angle, indicating a more hydrophilic surface. The addition of plasticizers, such as glycerol and sorbitol, can increase the water contact angle and make the films more hydrophobic. The water content in the films also plays a role, with films containing more than 15% water losing their hydrophobic properties. The presence of amylose in the film composition can also affect the water contact angle, with films containing more amylose showing better performance in terms of water resistance. Overall, the crystallinity, plasticizer content, and water content of the starch film all contribute to its water contact angle and hydrophobicity.
How does the plasticizer affect the water contact angle of starch films?5 answersThe plasticizer used in starch films affects the water contact angle. Films plasticized with glycerol showed lower contact angles, indicating higher wettability. On the other hand, films plasticized with 1-ethyl-3-methylimidazolium acetate had decreased molecular order and were more flexible, suggesting a decrease in hydrogen bonding and potentially lower water contact angles. The addition of water and glycerol as co-plasticizers resulted in films with increased surface hydrophobicity, indicating higher water contact angles. The type of plasticizer also influenced the water contact angle. Films plasticized with sorbitol showed lower contact angles compared to films plasticized with glycerol. Overall, the choice of plasticizer and its concentration can significantly affect the water contact angle of starch films.
What is the best amount of voulme of water for the water contact angle for laser textured surface?5 answersThe best amount of water volume for the water contact angle on laser textured surfaces varies depending on the specific surface and its characteristics. Different studies have shown that the contact angle can be influenced by the droplet size or volume. For example, in the study by Wang et al., it was found that the contact angle on a laser textured SiC surface increased significantly from 42.25° to 131.25° with increasing droplet volume from 0.001 μL to 1 μL, and then remained unchanged when the droplet volume exceeded 1 μL. Similarly, Laga and Borovikov observed changes in the contact angle hysteresis of water droplets spreading over laser modified aluminum alloy surfaces, depending on the droplet growth rate on the surface. Therefore, the optimal water volume for achieving a desired water contact angle on laser textured surfaces may vary and should be determined based on the specific surface characteristics and desired wetting behavior.