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Effect of cross-linked degree on thermal dynamic behavior of SHG in a polymer system based on melamine

B. GUO1,2,* , Y. GAO3, F. Q. GUO4, P. YIN2, H. XU1, Z. Z. GU1

Affiliation

  1. State Key Laboratory of Bioelectronics, Southeast University, Nanjing 210096, P.R. China
  2. College of Chemistry and Materials Science, Fujian Normal University, Fuzhou 350007, P.R.China
  3. College of Science, Nanjing Forestry University, Nanjing 210037, P.R. China
  4. Department of Material Engineering, Luoyang College of Technology, Luoyang 471002, P.R.China

Abstract

The temperature dependence of SHG (second harmonic generation) based on hexamethoxymethyl melamine (HMMM) and Disperse red 1 was experimentally investigated. The simultaneous poling and curing process was carried out under 120、140 and 160°C, respectively. The structure and thermal behavior of the sample was analyzed via FT-IR, DSC and TGA; UV-vis spectra and SHG measurement were utilized to characterize the linear and nonlinear optical properties. At elevated temperature, effect of cross-linked degree on thermal dynamic behavior of SHG was studied in details. Results showed that the better thermal dynamic stability of NLO can be achieved when the poling and curing temperature was at 160°C..

Keywords

SHG, Thermal stability, Cross-linked degree, Melamine.

Citation

B. GUO, Y. GAO, F. Q. GUO, P. YIN, H. XU, Z. Z. GU, Effect of cross-linked degree on thermal dynamic behavior of SHG in a polymer system based on melamine, Optoelectronics and Advanced Materials - Rapid Communications, 3, 11, November 2009, pp.1217-1220 (2009).

Submitted at: Sept. 27, 2009

Accepted at: Oct. 29, 2009