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Issue 4, 2019
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Mechanochemical synthesis of poly(lactic acid) block copolymers: overcoming the miscibility of the macroinitiator, monomer and catalyst under solvent-free conditions

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Abstract

Solvent-free green chemical synthesis of poly(lactic acid) (PLA) block copolymers was achieved via a mechanochemical method from macroinitiators. High-speed ball-milling of the lactide, macroinitiator, and organocatalyst (1,8-diazabicyclo[5.4.0]undec-7-ene, DBU) eliminated the need for a chemical solvent and produced a series of di- and tri-block copolymers containing PLA blocks with an excellent efficiency. High impact collisions between balls and a vessel provided sufficient mixing such that reactive chain-ends buried in polymeric domains were able to react with DBU and lactides, thus eliminating the need for chemical solvents.

Graphical abstract: Mechanochemical synthesis of poly(lactic acid) block copolymers: overcoming the miscibility of the macroinitiator, monomer and catalyst under solvent-free conditions

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Publication details

The article was received on 24 Oct 2018, accepted on 15 Dec 2018 and first published on 17 Dec 2018


Article type: Paper
DOI: 10.1039/C8PY01520A
Polym. Chem., 2019,10, 539-545

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    Mechanochemical synthesis of poly(lactic acid) block copolymers: overcoming the miscibility of the macroinitiator, monomer and catalyst under solvent-free conditions

    G. S. Lee, B. R. Moon, H. Jeong, J. Shin and J. G. Kim, Polym. Chem., 2019, 10, 539
    DOI: 10.1039/C8PY01520A

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