In this study, X-ray diffraction （XRD）, Fourier transform infrared spectrometer （FTIR） together with Scanning probe microscopy （SPM） were used to characterize the structure and morphology of the complexes, where...In this study, X-ray diffraction （XRD）, Fourier transform infrared spectrometer （FTIR） together with Scanning probe microscopy （SPM） were used to characterize the structure and morphology of the complexes, where the hydrobiotites （Xinfiang） were modified by single-chain surfactants octyltrimethylammonium bromide （OTMA） and octadecyltrimethylammonium bromide （ODTMA）. XRD patterns showed that the structure of complexes was significantly influenced by the surfactant concentration and the alkyl chain length, because obvious changes took place in the basal spacing. Furthermore, according to the XRD results, several arrangements of surfactant molecules within the hydrobiotite interlayer space were deduced. The FTIR spectrum indicated that the surfactant contents in complexes dramatically increased with the alkyl chain length. The SPM micrographs demonstrated that the surfaces of complexes prepared at lower surfactant concentration were relatively flat compared with that prepared at higher concentration, while those with higher surfactant concentration had much steeper surface due to the alkyl chain length. It was concluded that structure and morphology of surfactant/hydrobiotite complexes depend not only on the surfactant concentration, but also strongly on the surfactant species.展开更多
Center on application of fber processingtechnologies and improve technologicallevel of fber processing machinesTraditional fiber processing includes natural fibers like cotton, wool, linen and yarn. As chemical fibers...Center on application of fber processingtechnologies and improve technologicallevel of fber processing machinesTraditional fiber processing includes natural fibers like cotton, wool, linen and yarn. As chemical fibers are increasing in recent years, raw material structure of fiber processing industry has experi-enced changes, so traditional fiber processing craft and technology must be correspondingly improved.展开更多
The historical development has been promoted within the short forty years. The national people have facilitated development of the productive force through ideological emancipation with continuous and high-speed econo...The historical development has been promoted within the short forty years. The national people have facilitated development of the productive force through ideological emancipation with continuous and high-speed economic development. Economic aggregate has ranked the second place in the world and the striking achievements have promoted the social reform.展开更多
基金NSFC (No. 40502008)Sichuan Province Application and Basic Research Project (No. 05JY029-008)
文摘In this study, X-ray diffraction （XRD）, Fourier transform infrared spectrometer （FTIR） together with Scanning probe microscopy （SPM） were used to characterize the structure and morphology of the complexes, where the hydrobiotites （Xinfiang） were modified by single-chain surfactants octyltrimethylammonium bromide （OTMA） and octadecyltrimethylammonium bromide （ODTMA）. XRD patterns showed that the structure of complexes was significantly influenced by the surfactant concentration and the alkyl chain length, because obvious changes took place in the basal spacing. Furthermore, according to the XRD results, several arrangements of surfactant molecules within the hydrobiotite interlayer space were deduced. The FTIR spectrum indicated that the surfactant contents in complexes dramatically increased with the alkyl chain length. The SPM micrographs demonstrated that the surfaces of complexes prepared at lower surfactant concentration were relatively flat compared with that prepared at higher concentration, while those with higher surfactant concentration had much steeper surface due to the alkyl chain length. It was concluded that structure and morphology of surfactant/hydrobiotite complexes depend not only on the surfactant concentration, but also strongly on the surfactant species.
文摘Center on application of fber processingtechnologies and improve technologicallevel of fber processing machinesTraditional fiber processing includes natural fibers like cotton, wool, linen and yarn. As chemical fibers are increasing in recent years, raw material structure of fiber processing industry has experi-enced changes, so traditional fiber processing craft and technology must be correspondingly improved.
文摘The historical development has been promoted within the short forty years. The national people have facilitated development of the productive force through ideological emancipation with continuous and high-speed economic development. Economic aggregate has ranked the second place in the world and the striking achievements have promoted the social reform.
