Self-assembled right handed helical ribbons of the bone mineral hydroxyapatite.
A self-assembled right handed helical ribbon of bone mineral, hydroxyapatite (HAp) was crystallized in sodium meta silicate gel matrix at 27 degrees C and the physiological pH (7.4). At temperatures 37 and 47 degrees C, helical structures were followed by many Liesegang rings. The samples were characterized by FT-IR, XRD, SEM, ICP-OES and TG-DTA techniques. The helical ribbon consisted of platy Ca-deficient apatite crystals of size 2.8 microm. Liesegang ring had a continuous network of fibers with interconnected pores. The samples exhibited bioactivity when soaked in SBF.
Crystal Growth Centre, Anna University, Chennai 600 025, India.
R V
RV
Suganthi
E K
EK
Girija
S
S
Narayana Kalkura
H K
HK
Varma
A
A
Rajaram
D001826:Body Fluids / Q000502:physiology; D018786:Bone Substitutes / Q000138:chemical synthesis / Q000737:chemistry*; D011232:Chemical Precipitation; D003460:Crystallization; D017886:Durapatite / Q000138:chemical synthesis / Q000737:chemistry*; D008968:Molecular Conformation; D016062:Porosity; D017550:Spectroscopy, Fourier Transform Infrared; D013696:Temperature; D054457:Tissue Scaffolds / Q000737:chemistry; D014961:X-Ray Diffraction
D018786:Bone Substitutes; D017886:Durapatite