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. 2020 Sep 2;5(3):42. doi: 10.3390/biomimetics5030042

Figure 3.

Figure 3

(a) Raman spectra of PLA/Ag/PEG and PLA/Ag/PVP 3D printed samples, and (b) the molecular structures of PLA, PEG, and PVP compounds of which the Raman characteristic features have been assigned.