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Organo‐montmorillonite/nitrile butadiene rubber (OMMT/NBR) nanocomposites were prepared by co‐coagulating process, and then were combined with rubber ingredient and vulcanized by traditional rubber mixing procedure. The SEM micrographs of the nanocomposites showed uniform dispersion of the OMMT particles in NBR. The ATR‐FTIR spectra illustrated the existence of montmorillonite in the nanocomposites. The XRD patterns further indicated the structure of nanocomposites, and confirmed an effective intercalation of NBR in the interlayer space of the OMMT. Moreover, the tensile strength and elongation at break of nanocomposites tended to increased rapidly with increasing OMMT loading, due to the reinforcing properties of OMMT to NBR. In addition, the TGA and DTA curves demonstrated the thermal performance of the nanocomposites enhanced. Furthermore, the addition of OMMT accelerated the vulcanization process. POLYM. COMPOS., 34:1809–1815, 2013. © 2013 Society of Plastics Engineers

NaCl‐added mesoporous silica SBA‐15 was prepared by a simple grind method which needs low energy cost. Humidity sensing property was studied. Study results indicated that NaCl‐added material possesses higher humidity sensitivity. Its impedance changed more than four orders of magnitude when the relative humidity changed from 11% RH to 95% RH. From the viewpoint of economy, NaCl‐added SBA‐15 material which possesses high sensitivity and needs low energy cost is more suitable to be a promising humidity sensing material. Complex impedance spectra, the corresponding equivalent circuit, and bode diagrams were carefully analyzed to explore sensing mechanism.

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Flower-like Co 3 O 4/ Fe 3 O 4 magnetic microspheres were prepared by coprecipitation of Fe 2+ and Fe 3+ in presence of flower-like Co 3 O 4 microspheres as template. The preparation process included three steps: preparation of flower-like Co 3 O 4 microspheres by hydrothermal method; immersion of Fe 2+ and Fe 3+ ions; coprecipitation in the presence of OH -. Rhodamine B (RhB) was chosen as model pollutants to investigate the photodegradation capacities of Co 3 O 4/ Fe 3 O 4 magnetic microspheres. The results showed that the microspheres exhibited excellent degradation property and can be recycled to use again. After four times use the degradation efficiency was still above 90%.