Du ZW(杜竹玮); Hao JL(郝娟玲); Li HR(李浩然)
Source Publicationactachimicasinica
AbstractFabrication of biomimetic larminated composite by mimicking the cyclical matrix control process to form the highly structured Mollusca nacre was presented in this paper. (PDAC/PSS)(n) self-assembled multilayers were built-up through alternative adsorption of polycation and polyanion to a substrate as matrices and their chemical structure was characterized by UV-vis absorption spectra. And then the deposition of CaCO3 took place on the multilayers by dipping them into a supersaturated CaCO3 solution. The crystals regulated by (PDAC/PSS)(15)PDAC exhibited hexahedral shape and had a size of about 30 similar to 40 mu m after 10 h deposition. Hexagonal CaCO3 platelet crystals could be observed on (PDAC/PSS)15 with a relative small size of 10 similar to 20 mu m, which is very similar to the crystals existing in natural nacre. Therefore, CaCO3 crystals with remarkable morphology similarity to natural biornineralization products were obtained in the presence of artificial polyanion. However, X-ray diffraction results indicated that crystal lattice of both the samples was different from any kind of natural nacre. Consequently, it might be supposed that electrostatic effect is one of the key factors in morphology control while the crystal lattice was determined by other factors. Furthermore, end surface SEM image of (PDAC/PSS)(15)-CaCO3 composite elucidated that alternation of multilayer growth and deposition of inorganic crystals coupled with morphology regulation could form laminated material.
Document Type期刊论文
First Author Affilication中国科学院过程工程研究所
Recommended Citation
GB/T 7714
Du ZW,Hao JL,Li HR. controlofcaco3crystalgrowthonpdacpssselfassembledmultilayers[J]. actachimicasinica,2005,63(7):587.
APA 杜竹玮,郝娟玲,&李浩然.(2005).controlofcaco3crystalgrowthonpdacpssselfassembledmultilayers.actachimicasinica,63(7),587.
MLA 杜竹玮,et al."controlofcaco3crystalgrowthonpdacpssselfassembledmultilayers".actachimicasinica 63.7(2005):587.
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