Light magnesium carbonate fiber was synthesized by coprecipitation method with MgSO4·7H2O and K2CO3 as raw materials and PEG as structure director.The waste liquid was K2SO4/K2Mg(SO4)2 solution.The samples were characterized by XRD,SEM and TG-DTA,and the effecting factors on morphology and microstructure of magnesium carbonate,hydrate fibres were investigated.The results showed that,at room temperature,the stirring rate was 300 rad·min-1,the concentration of MgSO4 was 1.0 mol·L-1,the molar ratio of MgSO4 to K2CO3 was 1∶1.1 and the amount of PEG was 30%of the mass of MgSO4·7H2O,light magnesium carbonate fibers with good dispersion,average whisker length of 15.89 μm,diameter of 0.97 μm and length to diameter ratio of 16.38 were prepared.
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维普
