The effect of configuration of an asymmetric bulky initiator 2,2′-[1,1′-binaphtyl-2,2′-diyl- bis-(nitrylomethilidyne)]diphenoxy aluminum isopropoxide (
Ini) on structure of copolymer of asymmetric monomer
l,
l-lactide (
Lac) with symmetric comonomer trimethylene carbonate (
Tmc) was studied using polarimetry, dilatometry,
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The effect of configuration of an asymmetric bulky initiator 2,2′-[1,1′-binaphtyl-2,2′-diyl- bis-(nitrylomethilidyne)]diphenoxy aluminum isopropoxide (
Ini) on structure of copolymer of asymmetric monomer
l,
l-lactide (
Lac) with symmetric comonomer trimethylene carbonate (
Tmc) was studied using polarimetry, dilatometry, Size Exclusion Chromatography (SEC), and Carbon Nuclear Magnetic Resonance (
13C NMR). When the
S-enantiomer of
Ini was used the distribution in copolymer chains at the beginning of polymerization is statistical, with alternacy tendency, changing next through a gradient region to homoblocks of
Tmc. However, when
R-
Ini was used, the product formed was a gradient oligoblock one, with
Tmc blocks prevailing at the beginning, changing to
Lac blocks dominating at the end part of chains. Initiation of copolymerization with the mixture of both initiator enantiomers (
S:
R = 6:94) gave a multiblock copolymer of similar features but shorter blocks. Analysis of copolymerization progress required complex analysis of dilatometric data, assuming different molar volume contraction coefficients for units located in different triads. Comonomer reactivity ratios of studied copolymerizations were determined.
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