SYNTHESIS, CHARACTERIZATIONS, AND THERMO-OPTICAL PROPERTIES OF POLY(URETHANE-IMIDE) BASED ON AZO-DISPERSE DYE IN ITS SIDE CHAINS

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QIU F.; YANG D.; LI P.

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Journal Paper

Paper Information

Journal: Iranian Polymer Journal Year:2009 | Volume:18 | Issue:8 (110) Page(s): 651-661

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Title

SYNTHESIS, CHARACTERIZATIONS, AND THERMO-OPTICAL PROPERTIES OF POLY(URETHANE-IMIDE) BASED ON AZO-DISPERSE DYE IN ITS SIDE CHAINS

Author(s)

QIU F. | YANG D. | LI P. | Issue Writer Certificate

Keywords

POLY(URETHANE-IMIDE)

REFRACTIVE INDEX

THERMO-OPTIC COEFFICIENT

OPTICAL SWITCH

THERMAL STABILITY

Abstract

A new poly(urethane-imide) (PUI) was prepared by a condensation reaction of a -NCO terminated polyurethane prepolymer and 4,4'-(hexafluoroisopropylidene) diphthalic anhydride (6FDA). This prepolymer was prepared by a reaction of azo chromophore (dispersed red 19) containing two hydroxyl functional groups and isophorone diisocyanate (IPDI). The PUI was characterized by common spectroscopic methods such as UV-vis, FTIR and 1H NMR, and thermal studies using DSC and TGA. The results of DSC and TGA measurements indicated that the PUI exhibits high THERMAL STABILITY up to its glass-transition temperature (Tg) of 201°C and a weight loss of 5% at heat temperature of 238ºC, due to introduction of imide components and formation of strong hydrogen bonds. The weight-average molecular weight (Mw) was 52600 with a polydispersity of 2.14. The measurement of refractive indices (n) was performed using a multi-wavelength light Abbé refractometer with precise temperature control at single wavelength of an attenuated total reflection (ATR) setup. The values of n and THERMO-OPTIC COEFFICIENT (dn/dT) were used to calculate the dielectric constant (e) and its variation with temperature (de/dT), volume expansion coefficient (b) and its variation with temperature (db/dT) according to Lorentz-Lorenz equation. The dn/dT values were from -2.45×10-4 to -5.05×10-4 K-1 at multiwave-lengh light and from -4.1071×10-4 to -4.3875×10-4 K-1 at different single-wavelength lights. The db/dT values were from 0.3331×10-6 to 1.4668×10-6 K-1 at multiwave-lenght light and from 0.9449 ×10-6 to 1.1094×10-6 K-1 at different single-wavelength lights. The thermooptic coefficient was recorded as 10-4 K-1 which was nearly ten-fold that of inorganic materials such as SiO2 (1.1×10-5 K-1) and LiNbO3 (4×10-5 K-1). The results show that PUI may be useful as low loss optical communication devices and OPTICAL SWITCHes with low driving power.

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APA: Copy

QIU, F., YANG, D., & LI, P.. (2009). SYNTHESIS, CHARACTERIZATIONS, AND THERMO-OPTICAL PROPERTIES OF POLY(URETHANE-IMIDE) BASED ON AZO-DISPERSE DYE IN ITS SIDE CHAINS. IRANIAN POLYMER JOURNAL (ENGLISH), 18(8 (110)), 651-661. SID. https://sid.ir/paper/568990/en

Vancouver: Copy

QIU F., YANG D., LI P.. SYNTHESIS, CHARACTERIZATIONS, AND THERMO-OPTICAL PROPERTIES OF POLY(URETHANE-IMIDE) BASED ON AZO-DISPERSE DYE IN ITS SIDE CHAINS. IRANIAN POLYMER JOURNAL (ENGLISH)[Internet]. 2009;18(8 (110)):651-661. Available from: https://sid.ir/paper/568990/en

IEEE: Copy

F. QIU, D. YANG, and P. LI, “SYNTHESIS, CHARACTERIZATIONS, AND THERMO-OPTICAL PROPERTIES OF POLY(URETHANE-IMIDE) BASED ON AZO-DISPERSE DYE IN ITS SIDE CHAINS,” IRANIAN POLYMER JOURNAL (ENGLISH), vol. 18, no. 8 (110), pp. 651–661, 2009, [Online]. Available: https://sid.ir/paper/568990/en

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