The Experts below are selected from a list of 25203 Experts worldwide ranked by ideXlab platform

Nantana Jiratumnukul - One of the best experts on this subject based on the ideXlab platform.

  • modified tapioca starch as a rheology modifier in acrylic dispersion System
    Progress in Organic Coatings, 2013
    Co-Authors: Thidarat Makmoon, Asira Foungfuchat, Nantana Jiratumnukul
    Abstract:

    Abstract Tapioca starch was modified by esterification reaction using octenylsuccinic anhydride (OSA) to use as a rheological modifier. Effect of degree of substitution (DS = 0.01–0.04) of octenyl side chain on rheological properties of modified starch in acrylic dispersion System (ASD) was investigated. At low starch to dry acrylic ratio (0.2:100), shear viscosity at low shear rate of OSA-starch containing ASD System increased when the DS of OSA-starch increased. Thickening ability and thixotropic behavior of modified starches in acrylic dispersion System were studied at various modified starches to dry acrylic ratios (0.1–4:100). The results showed that modified starches provided good thickening efficiency. Moreover, an optimum concentration of modified starches, giving the highest thickening efficiency decreased as the DS increased. Results of rheological behavior illustrated that associative networks were formed by hydrophobic interaction between octenyl side chains and acrylic particles in acrylic dispersion System. The rheological properties of modified starches prepared in this study showed a potential in using as an associative thickener in water-Based Coating System.

Thidarat Makmoon - One of the best experts on this subject based on the ideXlab platform.

  • modified tapioca starch as a rheology modifier in acrylic dispersion System
    Progress in Organic Coatings, 2013
    Co-Authors: Thidarat Makmoon, Asira Foungfuchat, Nantana Jiratumnukul
    Abstract:

    Abstract Tapioca starch was modified by esterification reaction using octenylsuccinic anhydride (OSA) to use as a rheological modifier. Effect of degree of substitution (DS = 0.01–0.04) of octenyl side chain on rheological properties of modified starch in acrylic dispersion System (ASD) was investigated. At low starch to dry acrylic ratio (0.2:100), shear viscosity at low shear rate of OSA-starch containing ASD System increased when the DS of OSA-starch increased. Thickening ability and thixotropic behavior of modified starches in acrylic dispersion System were studied at various modified starches to dry acrylic ratios (0.1–4:100). The results showed that modified starches provided good thickening efficiency. Moreover, an optimum concentration of modified starches, giving the highest thickening efficiency decreased as the DS increased. Results of rheological behavior illustrated that associative networks were formed by hydrophobic interaction between octenyl side chains and acrylic particles in acrylic dispersion System. The rheological properties of modified starches prepared in this study showed a potential in using as an associative thickener in water-Based Coating System.

Asira Foungfuchat - One of the best experts on this subject based on the ideXlab platform.

  • modified tapioca starch as a rheology modifier in acrylic dispersion System
    Progress in Organic Coatings, 2013
    Co-Authors: Thidarat Makmoon, Asira Foungfuchat, Nantana Jiratumnukul
    Abstract:

    Abstract Tapioca starch was modified by esterification reaction using octenylsuccinic anhydride (OSA) to use as a rheological modifier. Effect of degree of substitution (DS = 0.01–0.04) of octenyl side chain on rheological properties of modified starch in acrylic dispersion System (ASD) was investigated. At low starch to dry acrylic ratio (0.2:100), shear viscosity at low shear rate of OSA-starch containing ASD System increased when the DS of OSA-starch increased. Thickening ability and thixotropic behavior of modified starches in acrylic dispersion System were studied at various modified starches to dry acrylic ratios (0.1–4:100). The results showed that modified starches provided good thickening efficiency. Moreover, an optimum concentration of modified starches, giving the highest thickening efficiency decreased as the DS increased. Results of rheological behavior illustrated that associative networks were formed by hydrophobic interaction between octenyl side chains and acrylic particles in acrylic dispersion System. The rheological properties of modified starches prepared in this study showed a potential in using as an associative thickener in water-Based Coating System.

Yi Zhang - One of the best experts on this subject based on the ideXlab platform.

  • friction and wear performance of sn Based Coatings under hydrodynamic mixed and boundary lubrication
    Tribology International, 2020
    Co-Authors: R S Bajwa, Ignacio Tudela, Rolandas Verbickas, I Palamarciuc, Yi Zhang
    Abstract:

    Abstract In this study, the friction properties and wear performances of monolayer and multilayer Coating structures operating under hydrodynamic, mixed and boundary lubrications have been evaluated using a ball-on-disc configuration. Results showed that, whereas no major differences in terms of frictional properties and wear performances were observed in both Coatings under hydrodynamic lubrication, the multilayer Sn-Based Coating exhibited significantly lower coefficient of friction and superior resistance against wear when mixed and boundary lubrication conditions are established. Post-test investigation revealed how intermetallic compound layer within multilayer Sn-Based Coating System contributed to its enhanced frictional properties and resistance to wear, enabling the multilayer Sn-Based Coating to adapt to more aggressive operating conditions and provide a superior performance under mixed and boundary lubrications.

R S Bajwa - One of the best experts on this subject based on the ideXlab platform.

  • friction and wear performance of sn Based Coatings under hydrodynamic mixed and boundary lubrication
    Tribology International, 2020
    Co-Authors: R S Bajwa, Ignacio Tudela, Rolandas Verbickas, I Palamarciuc, Yi Zhang
    Abstract:

    Abstract In this study, the friction properties and wear performances of monolayer and multilayer Coating structures operating under hydrodynamic, mixed and boundary lubrications have been evaluated using a ball-on-disc configuration. Results showed that, whereas no major differences in terms of frictional properties and wear performances were observed in both Coatings under hydrodynamic lubrication, the multilayer Sn-Based Coating exhibited significantly lower coefficient of friction and superior resistance against wear when mixed and boundary lubrication conditions are established. Post-test investigation revealed how intermetallic compound layer within multilayer Sn-Based Coating System contributed to its enhanced frictional properties and resistance to wear, enabling the multilayer Sn-Based Coating to adapt to more aggressive operating conditions and provide a superior performance under mixed and boundary lubrications.