TY - JOUR
T1 - Compensation of photoelastic birefringence of polymers by anisotropic molecules and analysis of compensation mechanism
AU - Ohkita, Hisanori
AU - Ishibashi, Kayoko
AU - Tanaka, Ryo
AU - Tagaya, Akihiro
AU - Koike, Yasuhiro
PY - 2005/6
Y1 - 2005/6
N2 - We report the anisotropic molecule dopant method for compensating the photoelastic birefringence of polymers. In this method, a rodlike molecule that has a polarizability anisotropy was chosen and doped in a polymer. We demonstrated this method by compensating the negative photoelastic birefringence of poly(methyl methacrylate) and poly(2,2,2-trifluoroethyl methacrylate) at a wavelength of 633 nm. trans-Stilbene and fluorene were selected as the anisotropic molecules. Homogeneous doping with the molecules almost eliminated the photoelastic birefringence of the polymers. We found that the photoelastic birefringence of poly(methyl methacrylate) was compensated by the elastic motion of trans-stilbene in the polymer as determined by the analysis of the infrared absorption spectrum. Furthermore, the orientation distribution function of trans-stilbene in a uniaxially strained PMMA film in a solid glass state was estimated by the investigation of infrared dichroic ratios.
AB - We report the anisotropic molecule dopant method for compensating the photoelastic birefringence of polymers. In this method, a rodlike molecule that has a polarizability anisotropy was chosen and doped in a polymer. We demonstrated this method by compensating the negative photoelastic birefringence of poly(methyl methacrylate) and poly(2,2,2-trifluoroethyl methacrylate) at a wavelength of 633 nm. trans-Stilbene and fluorene were selected as the anisotropic molecules. Homogeneous doping with the molecules almost eliminated the photoelastic birefringence of the polymers. We found that the photoelastic birefringence of poly(methyl methacrylate) was compensated by the elastic motion of trans-stilbene in the polymer as determined by the analysis of the infrared absorption spectrum. Furthermore, the orientation distribution function of trans-stilbene in a uniaxially strained PMMA film in a solid glass state was estimated by the investigation of infrared dichroic ratios.
KW - Compensation
KW - Film
KW - IR dichroism
KW - Optical polymer
KW - Orientation distribution function
KW - Photoelastic birefringence
KW - The anisotropic dopant method
KW - Zero birefringence
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U2 - 10.1143/JJAP.44.3975
DO - 10.1143/JJAP.44.3975
M3 - Article
AN - SCOPUS:23944469836
VL - 44
SP - 3975
EP - 3982
JO - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
JF - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
SN - 0021-4922
IS - 6 A
ER -