|
Hokkaido University Collection of Scholarly and Academic Papers >
Graduate School of Life Science / Faculty of Advanced Life Science >
Peer-reviewed Journal Articles, etc >
Tuning the Properties of Surface-Anchored Polymer Networks by Varying the Concentration of a Thermally Activated Cross-Linker, Annealing Time, and Temperature in a One-Pot Reaction
| Title: | Tuning the Properties of Surface-Anchored Polymer Networks by Varying the Concentration of a Thermally Activated Cross-Linker, Annealing Time, and Temperature in a One-Pot Reaction |
| Authors: | Woo, Sun Young Browse this author | | Pandiyarajan, C. K. Browse this author | | Genzer, Jan Browse this author |
| Keywords: | hydrogel | | substrate-anchored network | | gel fraction | | one-pot reaction | | poly(vinylpyrrolidone) | | sulfonylazide | | 6-ASHTES |
| Issue Date: | 12-Nov-2021 |
| Publisher: | American Chemical Society |
| Journal Title: | ACS applied polymer materials |
| Volume: | 3 |
| Issue: | 11 |
| Start Page: | 5568 |
| End Page: | 5577 |
| Publisher DOI: | 10.1021/acsapm.1c00890 |
| Abstract: | We investigate the properties of surface-anchored polymer networks created via one-pot synthesis using thermally active 6-azidosulfonylhexyltriethoxysilane (6-ASHTES). 6-ASHTES is a bifunctional gelator that undergoes cross-linking and surface-anchoring reactions when annealed above 100 degrees C. We employ a poly(vinylpyrrolidone) (PVP) with different molecular weights (10-1300 kDa) as a model system to examine the effect of 6-ASHTES concentration, annealing time, and annealing temperature on gel formation. A thin film of PVP/6-ASHTES mixture is deposited on a clean silicon wafer and annealed to form network layers. Spectroscopic ellipsometry measures the film thickness of the cross-linked layers from which the gel fraction and swelling ratio are determined. The gel fraction of PVP in the network can be "dialed in" by varying the annealing time, temperature, and concentration of 6-ASHTES in the PVP/6-ASHTES mixture. We use a simple Monte Carlo simulation model to describe cross-linking as a function of cross-linker concentration, reaction rate, reaction time, and polymer length. The trends obtained from the model simulations are in qualitative agreement with the experimental data. |
| Rights: | This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS applied polymer materials, copyright c American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://pubs.acs.org/articlesonrequest/AOR-HCKVXUIEBKGDPQV8UUPB. |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/87252 |
| Appears in Collections: | 生命科学院・先端生命科学研究院 (Graduate School of Life Science / Faculty of Advanced Life Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
|
Submitter: Jan Genzer
|
