azo polyurethane
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Optik ◽  
2018 ◽  
Vol 159 ◽  
pp. 50-56 ◽  
Author(s):  
Yan Jiang ◽  
Zulin Da ◽  
Fengxian Qiu ◽  
Dongya Yang ◽  
Yijun Guan ◽  
...  


2016 ◽  
Vol 230 (2) ◽  
Author(s):  
Caihong Chen ◽  
Zhening Yang ◽  
Fengxian Qiu ◽  
Tianlin Cao ◽  
Guorong Cao ◽  
...  

AbstractAn azo chromophore molecular S(-)-1,2-bis(4-azophenyl-4-nitro)-ethylenediamine (OABANEDA) was synthesized with 4-nitroaniline and S(-)-1,2-diphenyl ethylenediamine by diazo-coupling reaction. The azo polyurethane-urea (OAAPUU) was obtained from OABANEDA, polyether diol (NJ-210) and isophorone diisocyanate (IPDI). The structure of OAAPUU was characterized by the Fourier transform infrared and UV-visible spectroscopy. The physical and mechanical properties of OAAPUU were investigated. The refractive index (



2015 ◽  
Vol 216 (20) ◽  
pp. 2040-2047 ◽  
Author(s):  
Yuqi Zhou ◽  
Xiao Gong Wang
Keyword(s):  


2014 ◽  
Vol 72 (2) ◽  
pp. 323-337 ◽  
Author(s):  
Zhijuan Cao ◽  
Fengxian Qiu ◽  
Guorong Cao ◽  
Yijun Guan ◽  
Lin Zhuang ◽  
...  
Keyword(s):  


Optik ◽  
2013 ◽  
Vol 124 (16) ◽  
pp. 2551-2554 ◽  
Author(s):  
Lin Zhuang ◽  
Zhijuan Cao ◽  
Guorong Cao ◽  
Zhengling Wang ◽  
Fengxian Qiu ◽  
...  


2013 ◽  
Vol 42 (2) ◽  
pp. 191-195
Author(s):  
冯宗财 FENG Zong-cai ◽  
宋秀美 SONG Xiu-mei ◽  
江淑仪 JIANG Shu-yi ◽  
黄冠雄 HUANG Xiang-lan
Keyword(s):  


2013 ◽  
Vol 538 ◽  
pp. 73-76
Author(s):  
Feng Xian Qiu ◽  
Qing Wang ◽  
Cai Hong Chen ◽  
Hao Zhao ◽  
Jin Hua Liu ◽  
...  

A new chromophore containing azo group, 3,3'-dichloro-4,4'–di-(4-amino-azo-phenyl) -diphenylmethane (CAAPM), was synthesized based on 3,3'-dichloro-4,4'-diamino– diphenylmethane, sodium nitrite and benzenamine via diazo-coupling reaction. Azobenzene polyurethane (PU) containing chiral unit was obtained from CAAPM, chiral reagent L(-)-tartaric acid and isophorone diisocyanate (IPDI). The chemical structures of CAAPM and PU were characterized by FT-IR and UV-Vis spectroscopy. The measurements of refractive index (n) and thermo-optic coefficient (dn/dT) of polyurethane were demonstrated at complex light. The values of n and dn/dT were used to calculate the dielectric constant (ε) and its variation with temperature (dε/dT). The dn/dT is 4.2000~-3.7000×10-4°C-1. The conclusion has a little significance to develop new the digital optical switch (DOS).



Author(s):  
Qiang Shen ◽  
Jinhua Liu ◽  
Zhengling Wang ◽  
Guorong Cao ◽  
Fengxian Qiu


2011 ◽  
Vol 49 (13) ◽  
pp. 939-948 ◽  
Author(s):  
Jinhua Liu ◽  
Fengxian Qiu ◽  
Guorong Cao ◽  
Yijun Guan ◽  
Qiang Shen ◽  
...  


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