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. 2014 Apr 16;9(4):e94937. doi: 10.1371/journal.pone.0094937

Figure 1. Characteristics of synthesized RFP/PDLLA/nHA composite.

Figure 1

A:At the macroscopic level, RFP/PDLLA/nHA composite resembled a soft, porous orange sponge. [Scale bar, 10 mm]. B: ESEM micrograph showing even distribution of pores. The majority of pore walls and bottoms were smooth, while the remainder were irregularly cracked. [Scale bar, 100 µm]. C: XRD spectra; the diffraction peaks of inorganic constituents in the composite blocks conformed to the characteristic peaks of standard card No. 09-432 of JCPDS at 25.8°, 31.7° and 32.2°, indicating the presence of nHA. D: FTIR spectrum showing both RFP and PDLLA in the absence of newly produced contaminants derived from cross-linking or coupling reactions during the synthesis process.