Synthesis and properties of trimethylene carbonate/L-lactide copolymers obtained with the use of zinc-based initiators

被引：8

作者：

Pastusiak, Malgorzata ^{[1
]}

Dobrzynski, Piotr ^{[1
,2
]}

Janeczek, Henryk ^{[1
]}

Kaczmarczyk, Bozena ^{[1
]}

Kasperczyk, Janusz ^{[1
,3
]}

机构：

[1] Polish Acad Sci, Ctr Polymer & Carbon Mat, M Curie Sklodowskiej 34, PL-41800 Zabrze, Poland

[2] Jan Dlugosz Univ, Fac Math & Nat Sci, Armii Krajowej 13-15, PL-42218 Czestochowa, Poland

[3] Med Univ Silesia, Sch Pharm, Dept Biopharm, Jednosci 8, PL-41200 Sosnowiec, Poland

来源：

MATERIALS TODAY COMMUNICATIONS | 2016年 / 7卷

关键词：

Copolymerization; Cyclic carbonates; Trimethylene carbonate; L-Lactide; Acetylacetonates; Zinc complexes; RING-OPENING POLYMERIZATION; TAPERED DIBLOCK COPOLYMERS; EPSILON-CAPROLACTONE; 1,3-TRIMETHYLENE CARBONATE; CYCLIC MONOMERS; 2,2-DIMETHYLTRIMETHYLENE CARBONATE; ZIRCONIUM(IV) ACETYLACETONATE; BIODEGRADABLE POLYMERS; BLOCK-COPOLYMERS; DRUG-DELIVERY;

D O I：

10.1016/j.mtcomm.2016.04.011

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A series of trimethylene carbonate/L-lactide copolymers with varied comonomers composition were synthesized in bulk, using zinc (II) acetylacetonate and ethyl zinc (II) ethoxide as initiators. The values of the reactivity ratios were determined and they were respectively: r(LA) = 5.06 and r(TMC) = 0.89 in case of zinc (II) acetylacetonate and r(LA) =13.3 and r(TMC) = 0.33 in case of ethyl zinc (II) ethoxide. Observed significant differences in reactivity of the comonomers and weak ratio of transesterification processes, resulted in formation of their specific, tapered chains microstructure. This phenomenon caused differences in physico-chemical properties compared to the previously presented TMC/(L)-lactide copolymers obtained with other initiators. The presence of long lactidyl blocks caused much higher crystallinity of the copolymers. Investigation indicates on the spherolytic crystal morphology. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：140 / 148

页数：9

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