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Growth Mechanism of Polymer Membranes Obtained by H-Bonding Across Immiscible Liquid Interfaces
| Title: | Growth Mechanism of Polymer Membranes Obtained by H-Bonding Across Immiscible Liquid Interfaces |
| Authors: | de Baubigny, Julien Dupre Browse this author | | Perrin, Patrick Browse this author | | Pantoustier, Nadege Browse this author | | Salez, Thomas Browse this author | | Reyssat, Mathilde Browse this author | | Monteux, Cecile Browse this author |
| Keywords: | Transport properties | | Thickness | | Interfaces | | Diffusion | | Membranes |
| Issue Date: | 16-Feb-2021 |
| Publisher: | American Chemical Society |
| Journal Title: | ACS macro letters |
| Volume: | 10 |
| Issue: | 2 |
| Start Page: | 204 |
| End Page: | 209 |
| Publisher DOI: | 10.1021/acsmacrolett.0c00847 |
| Abstract: | Complexation of polymers at liquid interfaces is an emerging technique to produce all-liquid printable and self-healing devices and membranes. It is crucial to control the assembly process, but the mechanisms at play remain unclear. Using two different reflectometric methods, we investigate the spontaneous growth of H-bonded PPO-PMAA (polypropylene oxide-polymetacrylic acid) membranes at a flat liquid-liquid interface. We find that the membrane thickness h grows with time t as h similar to t(1/2), which is reminiscent of a diffusion-limited process. However, counterintuitively, we observe that this process is faster as the PPO molar mass increases. We are able to rationalize these results with a model which considers the diffusion of the PPO chains within the growing membrane. The architecture of the latter is described as a gel-like porous network, with a pore size much smaller than the radius of the diffusing PPO chains, thus inducing entropic barriers that hinder the diffusion process. From the comparison between the experimental data and the result of the model, we extract some key piece of information about the microscopic structure of the membrane. This study opens the route toward the rational design of self-assembled membranes and capsules with optimal properties. |
| Rights: | This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS macro letters, copyright c American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see http://pubs.acs.org/articlesonrequest/AOR-CPDCWWBHJU37VHWKD7AA. | | http://pubs.acs.org/articlesonrequest/AOR-CPDCWWBHJU37VHWKD7AA |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/84164 |
| 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)
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Submitter: SALEZ THOMAS BLAISE
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