In situ polymerization and photophysical properties of poly(p-phenylene benzobisoxazole)/multiwalled carbon nanotubes composites

被引:13
|
作者
Zhou, Chengjun [1 ,2 ]
Qiu, Xueying [1 ]
Zhuang, Qixin [1 ]
Han, Zhewen [1 ]
Wu, Qinglin [2 ]
机构
[1] E China Univ Sci & Technol, Key Lab Specially Funct Polymer Mat & Related Tec, Minist Educ, Sch Mat Sci & Engn, Shanghai 200237, Peoples R China
[2] Louisiana State Univ, Ctr Agr, Sch Renewable Nat Resources, Baton Rouge, LA 70803 USA
基金
中国国家自然科学基金;
关键词
poly(p-phenylene benzobisoxazole) (PBO); multiwalled carbon nanotubes (MWCNTs); nanocomposites; in situ polymerization; photophysical properties; ELECTRON-PARAMAGNETIC-RESONANCE; RIGID-ROD POLYMERS; POLYBENZAZOLE COPOLYMERS; METHANESULFONIC-ACID; PHYSICAL-PROPERTIES; FIBERS; FUNCTIONALIZATION; POLYBENZOXAZOLES; EXCITONS;
D O I
10.1002/app.35532
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Poly(p-phenylene benzobisoxazole)/multiwalled carbon nanotubes (PBO-MWCNT) composites with different MWCNT compositions were prepared through in situ polymerization of PBO in the presence of carboxylated MWCNTs. The nanocomposite's structure, thermal and photophysical properties were investigated and compared with their blend counterparts (PBO/MWCNT) using Fourier transform infrared spectra, Raman spectra, Wide-angle X-ray diffraction, thermogravimetric analysis, UV-vis absorption, and photoluminescence. The results showed that MWCNTs had a strong interaction with PBO through covalent bonding. The incorporation of MWCNTs increased the distance between two neighboring PBO chains and also improved the thermal resistance of PBO. The investigation of UV-vis absorption and fluorescence emission spectra exhibited that in situ PBO-MWCNT composites had a stronger absorbance and obvious trend of red-shift compared with blend PBO/MWCNT composites for all compositions. This behavior can be attributed to the efficient energy transfer through forming conjugated bonding interactions in the PBO-MWCNT composites. (c) 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2011
引用
收藏
页码:4740 / 4746
页数:7
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