We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Studies on thermo-optic property of chitosan-alizarin yellow GG complex: a direction for devices for biomedical applications.
- Authors
NIGAM, NIDHI; KUMAR, SANTOSH; DUTTA, PRADIP; GHOSH, TAMAL
- Abstract
The optical parameters including the refractive index ( n) and thermo-optic coefficient, TOC (d n/d T), the dielectric constant ( ε) and its variation with temperature, and the thermal volume expansion coefficient ( β) and its variation with temperature of chitosan-alizarin yellow GG (CS-AY GG) complex were examined. The d n/d T and ε-values for the polymer derivative were in the range −2.5 × 10 to 1.2 × 10C and 2.2 to 2.3, respectively. The d n/d T values were larger than that of inorganic glasses such as zinc silicate glass (5.5 × 10C) and borosilicate glass (4.1 × 10C) and were larger than that of organic polymers such as polystyrene (−1.23 × 10C) and PMMA (−1.20 × 10C). The ε-values are lower than optically estimated ε-values of conventional polymer (3.00), aliphatic polyimide (2.5) and semi-aromatic polyamide (2.83). The obtained results of chitosan derivative are expected to be useful for optical switching and optical waveguide areas for devices of biomedical applications.
- Subjects
THERMO-optical devices; CHITOSAN; ALIZARIN; PERMITTIVITY; REFRACTIVE index; THERMAL expansion; CHEMICAL derivatives; ALIPHATIC compounds
- Publication
Bulletin of Materials Science, 2015, Vol 38, Issue 6, p1639
- ISSN
0250-4707
- Publication type
Article
- DOI
10.1007/s12034-015-0968-y