Hua Luo
Abstract
To obtain poly D,L lactide with higher molecular weight,D,L lactide, which had been made under a lower degree of reduced pressure and recrystallized at its melting point of 125~126 ℃,was polymerized at 150~190 ℃ for 3~7 h.A polylactide with a viscosity average molecular weight up to 1.43×10 5 was obtained.It meets the need of processing.
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To obtain poly D,L lactide with higher molecular weight,D,L lactide, which had been made under a lower degree of reduced pressure and recrystallized at its melting point of 125~126 ℃,was polymerized at 150~190 ℃ for 3~7 h.A polylactide with a viscosity average molecular weight up to 1.43×10 5 was obtained.It meets the need of processing.
Key concepts: Lactide, Polymerization, Melting point, Polymer chemistry, Materials science, Molar mass distribution, Chemistry, Polymer