ChemInform Abstract: Lactide Synthesis and Chirality Control for Polylactic Acid Production

Wouwe, Pieter Van; Dusselier, Michiel; Vanleeuw, Evelien; Sels, Bert F.

doi:10.1002/chin.201627260

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2018

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“…To produce high molar mass PLA from lactic acid (LA), the commercial process uses a reaction route utilizing ring-opening polymerization (ROP) through a lactide intermediate . By rigorously controlling the ROP with a lactide, relatively high-quality PLA can be obtained …”

Section: Introductionmentioning

confidence: 99%

Design of a Novel Process for Continuous Lactide Synthesis from Lactic Acid

Park

Cho

Hwang

et al. 2018

Ind. Eng. Chem. Res.

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Lactide synthesis is an energy-intensive process used to produce polylactic acid (PLA). In this study, we propose a continuous lactide synthesis process developed on the basis of a recently developed one-step reaction using a SnO 2 −SiO 2 nanocomposite catalyst. This process enables a rapid reaction time of 40 ms for the catalyst, which achieves 94% lactide yield.To design an efficient chemical process, reaction kinetics were developed and a heterogeneous reactor model was applied to the reactor. The proposed process has advantages over commercial processes, having both a rapid reaction rate and high yield. Moreover, its rapid reaction rate significantly increases the productivity. In addition, this process operates under atmospheric pressure, which makes it more energy efficient than commercial processes that operate under a high vacuum pressure of 20 mmHg. Therefore, the overall process is an effective alternative for lactide production.

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Section: Introductionmentioning

confidence: 99%