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Systematic study of the glass transition in polyhydric alcohols
| Title: | Systematic study of the glass transition in polyhydric alcohols |
| Authors: | Nakanishi, Masahiro1 Browse this author | | Nozaki, Ryusuke2 Browse this author |
| Authors(alt): | 中西, 真大1 | | 野嵜, 龍介2 |
| Issue Date: | May-2011 |
| Publisher: | American Physical Society |
| Journal Title: | Physical Review E |
| Volume: | 83 |
| Issue: | 5 |
| Start Page: | 051503 |
| Publisher DOI: | 10.1103/PhysRevE.83.051503 |
| PMID: | 21728536 |
| Abstract: | We have investigated the glass transitions of trihydric alcohols using broadband dielectric spectroscopy, and compare the results with those previously reported for sugar alcohols. Although a systematic glass transition feature related to molecular size has been reported for sugar alcohols, the essential factor governing this feature is still unclear because the number of carbon atoms (Nc) and the number of OH groups (N_[OH]) per molecule are identical in sugar alcohols. By examining trihydric alcohols (Nc ≠ N_[OH]), we conclude that N_[OH] is dominant for the characteristics of the slow dynamics, such as fragility and glass transition temperature. This result suggests that the topological structure of the hydrogen-bonding network (coordination number) plays an important role in the glass transition of polyhydric alcohols. Furthermore, the orientational correlation factor evaluated using the Kirkwood-Fröhlich theory reveals a similarity in hydrogen bond formation among a variety of polyhydric alcohols. Based on these two experimental results, we discuss a possible physical picture of the glass transition of polyhydric alcohols. |
| Rights: | ©2011 American Physical Society |
| Type: | article |
| URI: | http://hdl.handle.net/2115/45608 |
| Appears in Collections: | 理学院・理学研究院 (Graduate School of Science / Faculty of Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 野嵜 龍介
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