| dc.identifier.uri | http://hdl.handle.net/11401/76368 | |
| dc.description.sponsorship | This work is sponsored by the Stony Brook University Graduate School in compliance with the requirements for completion of degree. | en_US |
| dc.format | Monograph | |
| dc.format.medium | Electronic Resource | en_US |
| dc.language.iso | en_US | |
| dc.publisher | The Graduate School, Stony Brook University: Stony Brook, NY. | |
| dc.type | Thesis | |
| dcterms.abstract | Solid-polymer interfaces play crucial roles in the multidisciplinary field of nanotechnology and are the confluence of physics, chemistry, biology, and engineering. There is now growing evidence that polymer chains irreversibly adsorb even onto weakly attractive solid surfaces, forming a nanometer-thick adsorbed polymer layer (“adsorbed polymer nanolayers†). It has also been reported that the adsorbed layers greatly impact on local structures and properties of supported polymer thin films. In this thesis, I aim to clarify adhesive and tribological properties of adsorbed poly(ethylene-oxide) (PEO) nanolayers onto silicon (Si) substrates, which remain unsolved so far. The adsorbed nanolayers were prepared by the established protocol: one has to equilibrate the melt or dense solution against a solid surface; the unadsorbed chains can be then removed by a good solvent, while the adsorbed chains are assumed to maintain the same conformation due to the irreversible freezing through many physical solid-segment contacts. I firstly characterized the formation process and the surface/film structures of the adsorbed nanolayers by using X-ray reflectivity, grazing incidence X-ray diffraction, and atomic force microscopy. Secondly, to compare the surface energy of the adsorbed layers with the bulk, static contact angle measurements with two liquids (water and glycerol) were carried out using a optical contact angle meter equipped with a video camera. Thirdly, I designed and constructed a custom-built adhesion-testing device to quantify the adhesive property. The experimental results provide new insight into the microscopic structure - macroscopic property relationship at the solid-polymer interface. | |
| dcterms.available | 2017-09-20T16:50:07Z | |
| dcterms.contributor | Koga, Tadanori | en_US |
| dcterms.contributor | Sokolov, Jonathan | en_US |
| dcterms.contributor | Venkatesh, T.. | en_US |
| dcterms.creator | Zeng, Wenduo | |
| dcterms.dateAccepted | 2017-09-20T16:50:07Z | |
| dcterms.dateSubmitted | 2017-09-20T16:50:07Z | |
| dcterms.description | Department of Materials Science and Engineering. | en_US |
| dcterms.extent | 44 pg. | en_US |
| dcterms.format | Monograph | |
| dcterms.format | Application/PDF | en_US |
| dcterms.identifier | http://hdl.handle.net/11401/76368 | |
| dcterms.issued | 2015-12-01 | |
| dcterms.language | en_US | |
| dcterms.provenance | Made available in DSpace on 2017-09-20T16:50:07Z (GMT). No. of bitstreams: 1
Zeng_grad.sunysb_0771M_12305.pdf: 1043689 bytes, checksum: 396a24f3d291eafae0202a86bd8de04d (MD5)
Previous issue date: 1 | en |
| dcterms.publisher | The Graduate School, Stony Brook University: Stony Brook, NY. | |
| dcterms.subject | adhesion, nanolayer, poly(ethylene-oxide) | |
| dcterms.subject | Materials Science | |
| dcterms.title | Novel adhesive properties of poly(ethylene-oxide) adsorbed nanolayers | |
| dcterms.type | Thesis | |
