Researchers at Periyar University, Salem, have patented technologies to produce hydroxyapatite from eggshells. This mineral can be used for bone grafts, coatings for dental and orthopaedic implants, ...
“To make the powder, we used a sol-gel method with a polymer template to prepare a composite of calcium silicate and hydroxyapatite with submicron-sized pores.” On sintering, the powder turns ...
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