International Journal of Polymer Science / 2013 / Article / Fig 3

Research Article

Preparation of Higher Molecular Weight Poly (L-lactic Acid) by Chain Extension

Figure 3

1H-NMR spectrum of PLA prepolymer (a) and the PLA chain extended with HDI (Run3) (b).
315917.fig.003a
(a) prepolymer
315917.fig.003b
(b) Run3

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