木质素对碳酸钙结晶行为的影响  

Effects of Lignin on Crystallization of Calcium Carbonate

作　　者：竹文坤[1,2,3] 罗学刚[2] 贺攀[2] 鹿岩[2] 

机构地区：[1]西南科技大学国防科技学院,四川绵阳621010 [2]生物质材料教育部工程研究中心,四川绵阳621010 [3]西南科技大学生命科学与工程学院,四川绵阳621010

出　　处：《林产化学与工业》2010年第6期7-12,共6页Chemistry and Industry of Forest Products

基　　金："十一五"国家科技支撑计划资助(2007BAB18B08)

摘　　要：依据生物矿化基本原理,以木质素作为有机基质,探讨了木质素浓度和生长体系的温度对CaCO3晶体生长情况的影响,通过FT-IR、扫描电镜(SEM)、X射线衍射(XRD)和热重分析(TG)对其形貌、结构、热分解等进行表征。结果表明:木质素溶液中形成的CaCO3晶体形貌不同于纯水中形成的晶体,为方解石型,具有哑铃形、球形、椭圆形和橄榄球形等形态,且木质素浓度和生长体系的温度对CaCO3晶体形貌影响显著。在CaCO3结晶过程中,CaCO3与木质素之间存在相互作用,并讨论了这种作用的可能机理。Based on the basic principles of biomineralization,the effects of lignin concentration and system temperature on the growth of CaCO3 crystals were studied.Moreover,the structure,appearance and thermal decomposition properties of CaCO3 were characterized by FT-IR,SEM,XRD and TG.The results demonstrated that CaCO3 formed in lignin solution was calcite,displaying dumbbell-shaped,spherical,oval or football-shaped appearance,which was different from that formed in pure water.Lignin concentration and system temperature had significant impact on the crystal morphology.During the course of crystallization,CaCO3 and lignin had mutual interaction,and the possible mechanism had been discussed.

关 键 词：木质素 碳酸钙 结晶 

分 类 号：TQ351[化学工程]