dc.citation.endPage |
301 |
- |
dc.citation.number |
4 |
- |
dc.citation.startPage |
295 |
- |
dc.citation.title |
KOREA POLYMER JOURNAL |
- |
dc.citation.volume |
6 |
- |
dc.contributor.author |
Park, Lee Soon |
- |
dc.contributor.author |
Ahn, Wonsool |
- |
dc.contributor.author |
Lee, Seong Hyun |
- |
dc.contributor.author |
Rho, Seung Baik |
- |
dc.contributor.author |
Kim, Chung Yup |
- |
dc.date.accessioned |
2023-12-22T12:14:18Z |
- |
dc.date.available |
2023-12-22T12:14:18Z |
- |
dc.date.created |
2015-09-16 |
- |
dc.date.issued |
1998-10 |
- |
dc.description.abstract |
Alternating Current Impedance Spectroscopy (ACIS) was used to characterize phase transition behabior of a low molecular weight liquid crystal, 4''-n-heptylbiphenyl (7CB) and its blend with an amorphous polymer, poly(methyl methacrylate) (PMMA). ACIS showed that pure 7CB has a single relaxation time due to a large permanent dipole moment associated with cyane (-CN) group in the 7CB molecule, which could be deduced from the Nyquist plot ot the impedance spectra of 7CB. The Nyquist plot of 7CB showed a remarkable change in scale near TNI and TCN, but almost perfect semicircles in complex plane. Changes of the electrical properties of PMMA/7CB blend were also utilized to investigate the relationship between the electrical properties and the phase behavior. The maximum resonance frequency, fmax at which -Z" of the blend becomes maximum, was considered to be a very sensitive probe to investigate the physico-chemical changes within the samples. |
- |
dc.identifier.bibliographicCitation |
KOREA POLYMER JOURNAL, v.6, no.4, pp.295 - 301 |
- |
dc.identifier.issn |
1225-5947 |
- |
dc.identifier.uri |
https://scholarworks.unist.ac.kr/handle/201301/17265 |
- |
dc.identifier.url |
http://www.cheric.org/research/tech/periodicals/view.php?seq=12312 |
- |
dc.language |
영어 |
- |
dc.publisher |
Polymer Society of Korea |
- |
dc.title |
A Study on Phase Transition Behavior of Low Molecular Weight Liquid Crystal and Its Blend with a Polymer using Altenating Current Impedance Spectroscopy |
- |
dc.type |
Article |
- |
dc.description.journalRegisteredClass |
scopus |
- |