Biomimetic Nucleation and Morphology Control of CaCO3 in PAAm Hydrogels Synthesized from Lyotropic Liquid Crystalline Templates
Biomimetic Nucleation and Morphology Control of CaCO3 in PAAm Hydrogels Synthesized from Lyotropic Liquid Crystalline Templates
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溶致液晶模板合成 PAAm 水凝胶中 CaCO3 的仿生成核和形态控制
DOI：
10.1002/cjoc.200990375
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发表时间：
2009-11
期刊：
影响因子：
--
通讯作者：
卢翠香
中科院分区：
文献类型：
--
作者：
杜竹玮;李浩然;李顶杰;卢翠香
水凝胶被认为是一种具有吸引力的生物替代材料。由溶致液晶（LLC）模板合成的水凝胶比传统的水凝胶具有更小的孔径和更均匀的孔径。LLC聚丙烯酰胺（PAAm）水凝胶被用作CaCO 3的生长介质。经与丙烯酸、2-丙烯酰胺基-2-甲基丙磺酸（AMPS）共聚制得。分别用COOH和SO 3 H对LLC水凝胶进行了改性，研究了改性后的水凝胶表面官能团对碳酸钙仿生矿化的影响。传统水凝胶中的晶体大多数为菱面体，不能形成聚集体，只有少数晶体可以聚集成亚晶取向不规则的特殊形态。在LLC水室中生长的晶体更受控制，并且可以形成具有特定形态和规则取向的聚集体，即，菱面体亚晶体的面（104）平行于大晶体的表面。COOH和SO 3 H基团的修饰使CaCO 3亚晶排列更加紧密，COOH对晶体取向的影响较小，对聚集体形貌的改变较小。SO_3 H基团能有效地改变聚集体的晶体取向和形貌，聚集体为假球形，且（104）面与聚集体表面平行
Hydrogels have been thought to be the material which call provide appealing replacements of biological organisms Pores of hydrogels synthesized from lyotrophic liquid crystalline (LLC) templates were smaller in size and more uniform than those of traditional hydrogels. LLC poly-acrylamide (PAAm) hydrogels were used as the growth media of CaCO3. After copolymerized with acrylic acid and 2-acrylamido-2-methylpropanesulfonic acid (AMPS). LLC hydrogels were modified with COOH and SO3H, respectively The effect of functional groups on the biomimetic metic mineralization of CaCO3 wa studied. Most of crystals from traditional hydrogels are rhombohedral and could not form aggregates Only a few could aggregate and have a particular morphology with irregular Orientation of subcrystal Compared with crystals separated from traditional hydrogels. crystals growing in the LLC hydroocls were much more regulated and could form aggregates with particular morphology and regular orientation that is, face (104) of rhombohedral subcrystals parallel to the surface of the macrocrystals. Modification of COOh and SO3H groups made CaCO3 subscrystal align more tightly COOH had minor influences on the crystal orientation and small modification to the aggregate morphology. SO3H groups could change the crystal orientation and morphology effectively The aggregates are pseudo-spherical and the face perpedicularity to the face (104) parallels to the surface of the aggregates
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影响因子：
3
作者：
E. Sone;S. Weiner;L. Addadi
通讯作者：
E. Sone;S. Weiner;L. Addadi
影响因子：
5.4
作者：
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影响因子：
1.8
作者：
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影响因子：
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作者：
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通讯作者：
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影响因子：
3.9
作者：
Eiden-Assmann, S;Viertelhaus, M;Felsche, J
通讯作者：
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