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. 2016 Jul 1;25(2):258–265. doi: 10.1016/j.jsps.2016.06.009

Figure 1.

Figure 1

A representative 1H NMR spectrum of PEO114-b-PCL120. The degree of polymerization of ɛ-caprolactone was estimated by comparing the peak intensity of PEO (–O–CH2–CH2; δ = 3.65 ppm) to that of PCL (–O–CH2; δ = 4.075 ppm).