Star-shaped poly(lactic acid) with carboxylic acid terminal groups via poly-condensation

被引：14

作者：

Abiko, Atsushi ^{[1
]}

Yano, Shin-ya ^{[1
]}

Iguchi, Makoto ^{[1
]}

机构：

[1] Kyoto Inst Technol, Grad Sch Sci & Technol, Sakyo Ku, Kyoto 6068585, Japan

来源：

POLYMER | 2012年 / 53卷 / 18期

关键词：

Star-shaped; poly(lactic acid); Poly-condensation; CRYSTALLIZATION KINETICS; STANNOUS OCTOATE; POLY(L-LACTIDE)S; CORE; POLYLACTIDE; ARMS; PENTAERYTHRITOL; POLYMERIZATION; DEGRADATION; NUMBERS;

D O I：

10.1016/j.polymer.2012.07.009

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

A series of star-shaped poly(lactic acid)s with carboxylic acid terminal groups have been synthesized by direct poly-condensation of lactic acid in the presence of a poly-carboxylic acid core molecule with triphenylphosphonium trifluoromethanesulfonate (TPP-T) catalyst. These star-polymers had thermal properties not very much different from those of star-shaped poly(lactic acid) with hydroxyl terminal groups and linear poly(lactic acid), irrespective of the structure of the core molecule and number of polymer arms. Solubility and degradability of these star-polymers were, however, greatly enhanced compared to those of star-polymers with hydroxyl terminal groups and increased depending on the number of polymer arms. From the star-shaped polymers, a variety of ammonium salts and the corresponding carboxyamides were successfully prepared. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：3842 / 3848

页数：7

共 20 条

[1] Multiarm star nanocarriers containing a poly(ethylene imine) core and polylactide arms [J].

Adeli, M. ;

Haag, R. .

JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY, 2006, 44 (19) :5740-5749

[2]

[Anonymous], NEW METHOD DIR UNPUB

[3] An overview of polylactides as packaging materials [J].

Auras, R ;

Harte, B ;

Selke, S .

MACROMOLECULAR BIOSCIENCE, 2004, 4 (09) :835-864

[4] Star-shaped poly(L-lactide)s with variable numbers of hydroxyl groups at polyester arms chain-ends and directly attached to the star-shaped core - Controlled synthesis and characterization [J].

Biela, T ;

Duda, A ;

Pasch, H ;

Rode, K .

JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY, 2005, 43 (23) :6116-6133

[5] Characterization of star-shaped poly(L-lactide)s by liquid chromatography at critical conditions [J].

Biela, T ;

Duda, A ;

Rode, K ;

Pasch, H .

POLYMER, 2003, 44 (06) :1851-1860

[6] Synthesis and properties of star-shaped polylactide attached to poly(amidoamine) dendrimer [J].

Cai, Q ;

Zhao, YL ;

Bei, JZ ;

Xi, F ;

Wang, SG .

BIOMACROMOLECULES, 2003, 4 (03) :828-834

[7]

Cason J., 1955, Org. Synth. Coll, V3, P169

[8] Multi-arm star poly(L-lactide) with hyperbranched polyglycerol core [J].

Gottschalk, Carsten ;

Wolf, Florian ;

Frey, Holger .

MACROMOLECULAR CHEMISTRY AND PHYSICS, 2007, 208 (15) :1657-1665

[9] Preparation and crystallization kinetics of new structurally well-defined star-shaped biodegradable poly(L-lactide)s initiated with diverse natural sugar alcohols [J].

Hao, QH ;

Li, FX ;

Li, QB ;

Li, Y ;

Jia, L ;

Yang, J ;

Fang, Q ;

Cao, AM .

BIOMACROMOLECULES, 2005, 6 (04) :2236-2247

[10] An onium salt-catalyzed direct polycondensation of lactic acid [J].

Iwahashi, Hisako ;

Oka, Tatsuya ;

Abiko, Atsushi .

CHEMISTRY LETTERS, 2008, 37 (07) :708-709

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