carbon/carbon composites. The FTIR

carbon/carbon composites. The FTIR spectrum shows the charac-teristic absorption peaks of the functional groups in hydroxyapatite(Fig. 7a). The intense peaks in the range of 560–605 cm−1and1030.6 cm−1are attributed to the major absorption modes of thePO43−, the O P O bending mode and P O stretching vibrationmode, respectively [33]. The peaks at 3748.8 cm−1and 3444.8 cm−1are attributed to OH−vibration mode [34]. The peak at 1645.3 cm−1is assigned to adsorption water. In addition, there is a peak at1404.2 cm−1relating to the CO32−vibration mode being observed[35], which is typical peak of the B-type CO32−substituted hydroxy-apatite (CO32−substitutes PO43−in hydroxyapatite) [12,36]. It iswell known that the CO32−could substitute the PO43−or OH−inhydroxyapatite, forming carbonated hydroxyapatite. According tothe mode of CO32−substitution in hydroxyapatite, the carbonatedhydroxyapatite could be classified into A-type carbonated hydroxy-apatite (CO32−substitutes OH−), B-type carbonated hydroxyapatite(CO32−substitutes PO43−) or AB-type carbonated hydroxyapa-tite (CO32−substitutes both OH−and PO43−) [37,11,38]. The FTIRresults show that the CO32−has resided in PO43−sites in thehydroxyapatite prepared in this work, forming the B-type car-bonated hydroxyapatite. Fig. 7b shows four characteristic Ramanpeaks of carbonated hydroxyapatite, two strong peaks located at963 cm−1and 1054 cm−1are attributed to the P-O stretching vibra-tion of 1and 3PO43−mode, respectively. The other two smallpeaks at 432 cm−1and 589 cm−1are attributed to the P O stretch-ing vibration of 2PO43−mode and O P O vibration of 4PO43−mode, respectively.

ผลลัพธ์ (อังกฤษ) 3:

Carbon / carbon composites. The FTIR spectrum shows the charac-teristic absorption peaks of the functional groups in hydroxyapatite (Fig.? 7a). The intense peaks in the range of 560 - 605 cm − 1and1030.6 cm − 1are attributed to the major absorption modes of, thePO43 signed. The O P O bending mode and P O, stretching vibrationmode respectively [33]. The peaks at 3748.8 cm − 1and 3444.8 cm − 1are attributed to OH − vibration mode [34]. The peak at 1645.3 cm − 1is assigned to adsorption water. In addition there,, Is a peak at1404.2 cm − 1relating to the CO32 − vibration mode being observed [35], which is typical peak of the B-type CO32 − substituted. Hydroxy-apatite (CO32 − substitutes PO43 − in hydroxyapatite) 12 36 [,].It iswell known that the CO32 − could substitute the PO43 − or OH − inhydroxyapatite forming carbonated, hydroxyapatite. According. Tothe mode of CO32 − substitution in hydroxyapatite the carbonatedhydroxyapatite, could be classified into A-type carbonated. Hydroxy-apatite (CO32 − substitutes OH −),B-type carbonated hydroxyapatite (CO32 − substitutes PO43 −) or AB-type carbonated hydroxyapa-tite (CO32 − substitutes both OH − and. PO43 −) [37 11 38,,]. The FTIRresults show that the CO32 − has resided in PO43 − sites in thehydroxyapatite prepared in, this work. Forming the B-type car-bonated hydroxyapatite. Fig. 7b shows four characteristic Ramanpeaks of, carbonated hydroxyapatiteTwo strong peaks located at963 cm − 1and 1054 cm − 1are attributed to the P-O stretching vibra-tion of  1and  3PO43 − mode respectively,,. The other two smallpeaks at 432 cm − 1and 589 cm − 1are attributed to the P O stretch-ing vibration of  2PO43 − mode and O P O. Vibration of  4PO43 −, mode respectively.