期刊
POLYMER CHEMISTRY
卷 10, 期 4, 页码 539-545出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8py01520a
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资金
- National Research Foundation of Korea [NRF-2017M1A2A2049168, 2012M3A7B4049677]
- National Research Foundation of Korea [2012M3A7B4049677] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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.
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