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| The preparation of hydroxyapatite by precipitation. Polyvinyl alcohol (PVA) and will hydroxyapatite (HA) according to certain mixing ratio, prepared by frozen - melt out of PVA/HA compound gel. Research hydroxyapatite content, frozen -- to melt circulating frequency composite hydrogel moisture content, brasion resistance effects. Results show that with the content of hydroxyapatite from 0.000 %, 1.011 %, 3.006 %, 5.008 %, 7.010 10.01 15.01 percent, %, increase gradually, the water % lower than in content, and gradually increase gradually 11.76 % than gradually reduce swelling, As the cycle melt frozen - increases, moisture content and gradually reduce swelling ratio increased gradually.Ĭ°§Ò»Ï ף¸£ÓñÊ÷£¡£¡ |

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