Citation: FENG Zhiminga, LIN Weiping_b, YE Cheng_a. THE EFFECT OF PHOTO-CROSSLINKING ON THE ORIENTATION STABILITY OF POLYVINYL ALCOHOL CONTAINING 4-NITRO-4′-ALKOXYSTILBENE AND CINNAMYL PENDENT GROUPS*[J]. Chinese Journal of Polymer Science, ;1997, 15(2): 154-161. shu

THE EFFECT OF PHOTO-CROSSLINKING ON THE ORIENTATION STABILITY OF POLYVINYL ALCOHOL CONTAINING 4-NITRO-4′-ALKOXYSTILBENE AND CINNAMYL PENDENT GROUPS*

Received Date: 16 January 1996

Crosslinking is one of the effective routes for improving the orientation stability of poledpolymer films. The derivative of polyvinyl alcohol containing 4-nitro-4'-alkoxystilbene andphoto-crosslinkable cinnamyl groups as side chains has been synthesized. The in-situ simul-taneous photo-crosslinking poling of synthesized polymer films has been performed. Thesecond order nonlinear optical coefficient d33 of poled film is 11 pm/V. The SHG mea-surements show that the break-over temperature of SHG signal is raised obviously after irradiation,its orientation stability is doubled as compared with that of non-crosslinking samples.
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