高等学校化学学报 ›› 1995, Vol. 16 ›› Issue (S1): 41.
PENG Xiao-gang1, LI Lin-song1, ZHANG Yan1, BAI Yu-bai1, LI Tie-jin2
PENG Xiao-gang1, LI Lin-song1, ZHANG Yan1, BAI Yu-bai1, LI Tie-jin2
摘要:
Thermal stability and thermal behavior of nanoparticulate α-Fe2O3-stearate alternating Langmuir-Blodgett multilayer have been studied through temperature dependent FTIR spectroscopy. The results show that this multilayer has an excellent thermal stability. From 60℃ to 150℃,the alkyl chains in the multilayer can keep "all trans" configuration and the Fe2O3 nanopar-ticle multilayer film structure still remains an order structure. From 200℃ to 220℃, the film undergoes a phase transition from solid to liquid. Tins high melting point is due to the high molecular weight (at least 105 atomic weight units for one nanoparticle) and the stearate ions are chemically bonded to it.
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