Nanocomposite Latex Films and Control of Their Properties

Keddie, Joseph L.; Routh, Alexander F.

doi:10.1007/978-90-481-2845-7_7

Cited by 10 publications

(14 citation statements)

References 155 publications

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“…The drying of colloidal dispersions, allowing by simple evaporation of a solvent to form a dense and consolidated material from colloids dispersed in a liquid, is a key step of many industrial processes, from coatings to electrode manufacturing. 1,2 The detailed understanding of the mechanisms at play remains a scientific challenge and involves multiple aspects: transport phenomena, physical chemistry of colloids, mechanical instabilities, etc. 3–6…”

Section: Introductionmentioning

confidence: 99%

Confined directional drying of a colloidal dispersion: kinetic modeling

Pingulkar

Salmon

2023

Soft Matter

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Section: Introductionmentioning

confidence: 99%

Confined directional drying of a colloidal dispersion: kinetic modeling

Pingulkar

Salmon

2023

Soft Matter

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“…The evaporation time scale is t ev = H / v ev , H is the initial thickness of the coating; the diffusion time scale is t d = H 2 / D , D is the diffusion constant of the latex particle, which is inversely proportional to solvent viscosity . The competition between t ev and t d can be quantified by the Péclet number (Pe) of coating formation, Pe = t d / t ev = v ev H / D . − When Pe < 1( t d < t ev ), the coating dries slowly (diffusion dominating), and the evaporation weakly perturbs the vertical concentration profile. The coating drying is near equilibrium and shows an almost uniform profile.…”

Section: Results and Discussionmentioning

confidence: 99%

Self-Stratifying Coating with Robust and Durable Superhydrophobic Underlayer Constructed by Amphiphilic Janus Nanoparticles

Yang

Liu

et al. 2023

Chem. Mater.

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The multifunctional gradient self-stratifying coating (SSC) is attractive in many applications, but the robustness and durability of the functionalities still remains challenging. Here, a water-based SSC composed of amphiphilic Janus nanoparticles (JNPs) and binder latex is constructed by an extremely simple one-step drying method. The surface-partitioned “soft–hard” JNPs are specially designed and synthesized, in which the hard side of the JNPs (fluorosilane modified silica) imparts hydrophobicity and mechanical strength to the SSC, and the soft side contributes to the uniform dispersion of the hydrophobic JNPs in a water-based mixture and strong adhesion of JNPs to binder. Coatings with various microstructures and properties could be obtained simply by adjusting the binder solid content. Among them, the desirable SSC with a binder-rich upper layer and a JNPs-rich lower layer possesses a smooth surface and a superhydrophobic underlayer. The superhydrophobic underlayer of this SSC exhibits durable superhydrophobicity after 300 abrasion cycles and remarkable water repellency after heavy pull-off as well as good flexibility (film-forming). Our designs could provide new strategies for the development of low-cost and high-performance water-based SSC.

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“…6 Latex solutions are frequently applied to various surfaces and dried to create protective coating layers. 7,8 Evaporating solvent out of the mixtures of fillers and polymer solutions is often used for the fabrication of polymer-based composite materials. 9 Understanding evaporation and drying is thus of vital importance for a wide range of fields from environment to industry.…”

Section: Introductionmentioning

confidence: 99%