Synthesis of citrate-stabilized hydrocolloids of hydroxyapatite through a novel two-stage method: A possible aggregates-breakdown mechanism of colloid formation

► Citrate-stabilized hydroxyapatite (HA) hydrocolloids were synthesized through a novel two-stage method. ► The HA hydrocolloid remains stable for over 2 years. ► The conformational changes in citrate ions on HA at different temperatures explain the colloid formation process.