One-pot synthesis of star-shaped aliphatic polyesters with hyperbranched cores and their characterization with size exclusion chromatography

被引：31

作者：

Biela, Tadeusz ^{[1
]}

Polanczyk, Ilona ^{[1
]}

机构：

[1] Polish Acad Sci, Ctr Mol & Macromol Studies, Dept Polymer Chem, PL-90363 Lodz, Poland

来源：

JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY | 2006年 / 44卷 / 13期

关键词：

biodegradable; bislactones; epsilon-caprolactone; hyperbranched polyesters; L; L-lactide; MALDI; ring-opening polymerization; size exclusion chromatography; star polyesters;

D O I：

10.1002/pola.21514

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Synthesis and characterization of star-shaped aliphatic polyesters with hyperbranched cores were presented. Bis-CL was prepared in a two-step synthesis from dis-cyclohexyl-4,4′-diol. The reaction mixtures were prepared with a standard high-vacuum technique, and the polymerizations were carried out in sealed glass ampules. The polymerization mixture was analyzed using H NMR spectroscopy. It was found that the SEC traces in the range of elution volumes of the precursor is related to star-shaped structures with a lower number of arms. The hydrodynamic volume of the star-shaped polymers is lower than that of their linear counterparts with the same molar masses. A MALDI-TOF analysis of the model reaction has given strong evidence for multibranched star formation.

引用

页码：4214 / 4221

页数：8

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