期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 132, 期 6, 页码 1750-+出版社
AMER CHEMICAL SOC
DOI: 10.1021/ja9089395
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资金
- Grant-in-Aid for Scientific Research [21550116]
- Grants-in-Aid for Scientific Research [21550116] Funding Source: KAKEN
The bulky substituents of homosalen complexes decelerate the ring-opening polymerization of racemic lactide (LA). The substituent effects provide the first catalysis for the random copolymerization of epsilon-caprolactone (CL) with LA (CL/LA = 1:1). The copolymerization of CL with LA (CL/LA = 1:1) by the iPr(3)Si-substituted homosalen-Al complex 2 affords the practically random copolymer in a controlled manner. The reactivity ratios, average sequence lengths of CL and LA during the copolymerization, abundance ratios of the triad caproyl sequences, and T-g value of the obtained copolymer indicate that the copolymer was random with a somewhat alternative tendency (r(Cl/LA) = 0.80).
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