Viscoelastic Properties of Electrospray‐Deposited Polymer Shells via Quartz Crystal Microbalance With Dissipation (QCM‐D)
Abstract Multilayer polymer films are extensively used in multiphase separation. Electrospray deposition (ESD) is an important technique for fabricating such films with tunable morphology. Viscoelastic properties of polystyrene (PS) nanoshell coatings produced by ESD on gold and spin‐coated PS surfa...
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| Format: | Article |
| Language: | English |
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Wiley-VCH
2024-12-01
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| Series: | Macromolecular Materials and Engineering |
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| Online Access: | https://doi.org/10.1002/mame.202400224 |
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| author | Robert A. Green‐Warren Noah M. McAllister Parameshwaran Pasupathy Assimina A. Pelegri Jonathan P. Singer N. Sanjeeva Murthy |
| author_facet | Robert A. Green‐Warren Noah M. McAllister Parameshwaran Pasupathy Assimina A. Pelegri Jonathan P. Singer N. Sanjeeva Murthy |
| author_sort | Robert A. Green‐Warren |
| collection | DOAJ |
| description | Abstract Multilayer polymer films are extensively used in multiphase separation. Electrospray deposition (ESD) is an important technique for fabricating such films with tunable morphology. Viscoelastic properties of polystyrene (PS) nanoshell coatings produced by ESD on gold and spin‐coated PS surfaces are evaluated using Quartz Crystal Microbalance with Dissipation (QCM‐D). The thickness of PS films on gold increases with flow rate from ∼200 nm at 0.5 to ∼400 nm at 1.5 mL h−1, accompanied by an order‐of‐magnitude increase in dissipation due to larger particle sizes from shorter droplet flight times. This effect is absent on spin–coated PS films, suggesting the onset of the self‐limiting effect of charges. Although the shear moduli for ESD films calculated from Voigt models is only 0.08%–0.20% of the bulk PS modulus, the stiffness ratio of spray‐coated PS to a single shell is (5.00–13.3) × 103 m−1, due to shell–shell and shell–substrate interactions. These are novel results related to the interparticle friction obtained using QCM‐D for the first time. This work demonstrates that mechanical properties of particulate viscoelastic films with potential applications in high surface area sensors, such as size‐selective membranes for protein or electrolyte adsorption, can be evalauted by QCM‐D with nanograms of material. |
| format | Article |
| id | doaj-art-9d6fc6f1a2a44674ab5a664659480c62 |
| institution | Kabale University |
| issn | 1438-7492 1439-2054 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Wiley-VCH |
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| series | Macromolecular Materials and Engineering |
| spelling | doaj-art-9d6fc6f1a2a44674ab5a664659480c622024-12-17T01:22:03ZengWiley-VCHMacromolecular Materials and Engineering1438-74921439-20542024-12-0130912n/an/a10.1002/mame.202400224Viscoelastic Properties of Electrospray‐Deposited Polymer Shells via Quartz Crystal Microbalance With Dissipation (QCM‐D)Robert A. Green‐Warren0Noah M. McAllister1Parameshwaran Pasupathy2Assimina A. Pelegri3Jonathan P. Singer4N. Sanjeeva Murthy5Department of Mechanical and Aerospace Engineering Rutgers University Piscataway NJ 08854 USADepartment of Mechanical and Aerospace Engineering Rutgers University Piscataway NJ 08854 USADepartment of Mechanical and Aerospace Engineering Rutgers University Piscataway NJ 08854 USADepartment of Mechanical and Aerospace Engineering Rutgers University Piscataway NJ 08854 USADepartment of Mechanical and Aerospace Engineering Rutgers University Piscataway NJ 08854 USALaboratory for Biomaterials Research Department of Chemistry and Chemical Biology Rutgers University Piscataway NJ 08854 USAAbstract Multilayer polymer films are extensively used in multiphase separation. Electrospray deposition (ESD) is an important technique for fabricating such films with tunable morphology. Viscoelastic properties of polystyrene (PS) nanoshell coatings produced by ESD on gold and spin‐coated PS surfaces are evaluated using Quartz Crystal Microbalance with Dissipation (QCM‐D). The thickness of PS films on gold increases with flow rate from ∼200 nm at 0.5 to ∼400 nm at 1.5 mL h−1, accompanied by an order‐of‐magnitude increase in dissipation due to larger particle sizes from shorter droplet flight times. This effect is absent on spin–coated PS films, suggesting the onset of the self‐limiting effect of charges. Although the shear moduli for ESD films calculated from Voigt models is only 0.08%–0.20% of the bulk PS modulus, the stiffness ratio of spray‐coated PS to a single shell is (5.00–13.3) × 103 m−1, due to shell–shell and shell–substrate interactions. These are novel results related to the interparticle friction obtained using QCM‐D for the first time. This work demonstrates that mechanical properties of particulate viscoelastic films with potential applications in high surface area sensors, such as size‐selective membranes for protein or electrolyte adsorption, can be evalauted by QCM‐D with nanograms of material.https://doi.org/10.1002/mame.202400224electrospray depositionnanoparticlespolymer shellsquartz crystal microbalance with dissipationthin filmsviscoelasticity |
| spellingShingle | Robert A. Green‐Warren Noah M. McAllister Parameshwaran Pasupathy Assimina A. Pelegri Jonathan P. Singer N. Sanjeeva Murthy Viscoelastic Properties of Electrospray‐Deposited Polymer Shells via Quartz Crystal Microbalance With Dissipation (QCM‐D) Macromolecular Materials and Engineering electrospray deposition nanoparticles polymer shells quartz crystal microbalance with dissipation thin films viscoelasticity |
| title | Viscoelastic Properties of Electrospray‐Deposited Polymer Shells via Quartz Crystal Microbalance With Dissipation (QCM‐D) |
| title_full | Viscoelastic Properties of Electrospray‐Deposited Polymer Shells via Quartz Crystal Microbalance With Dissipation (QCM‐D) |
| title_fullStr | Viscoelastic Properties of Electrospray‐Deposited Polymer Shells via Quartz Crystal Microbalance With Dissipation (QCM‐D) |
| title_full_unstemmed | Viscoelastic Properties of Electrospray‐Deposited Polymer Shells via Quartz Crystal Microbalance With Dissipation (QCM‐D) |
| title_short | Viscoelastic Properties of Electrospray‐Deposited Polymer Shells via Quartz Crystal Microbalance With Dissipation (QCM‐D) |
| title_sort | viscoelastic properties of electrospray deposited polymer shells via quartz crystal microbalance with dissipation qcm d |
| topic | electrospray deposition nanoparticles polymer shells quartz crystal microbalance with dissipation thin films viscoelasticity |
| url | https://doi.org/10.1002/mame.202400224 |
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