Amphiphilic Block Copolymer from Hydroxyl-Terminated Polymers Functionalized with TEMPO. A New Synthetic Method Using Oxoammonium Salt

被引：10

作者：

Bonilla-Cruz, Jose ^{[1
]}

Lara-Ceniceros, Tania E. ^{[1
]}

Ramirez-Wong, D. G. ^{[2
]}

Saldivar-Guerra, Enrique ^{[2
]}

Perez-Rodriguez, F. ^{[1
]}

Marquez-Lamas, Uriel ^{[1
]}

机构：

[1] Ctr Invest Mat Avanzados CIMAV, Unidad Monterrey, Nuevo Leon Mexico 66600, Mexico

[2] Ctr Invest Quim Aplicada CIQA, Coahuila Mexico, Mexico

来源：

MACROMOLECULAR CHEMISTRY AND PHYSICS | 2011年 / 212卷 / 15期

关键词：

functionalization of polymers; nitroxides; oxoammonium salts; polysiloxanes; poly(propylene glycol); NITROXIDE-MEDIATED POLYMERIZATION; SUPERCRITICAL CARBON-DIOXIDE; RADICAL POLYMERIZATION; POLY(ETHYLENE OXIDE); DISPERSION POLYMERIZATION; STYRENE; MACROAZOINITIATOR; POLYSTYRENE; ALKOXYAMINE; MECHANISM;

D O I：

10.1002/macp.201100070

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 simple approach for the end-functionalization of hydroxyl-terminated polymers with nitroxide moieties using oxoammonium salts (OS) is presented. The functionalization is carried out using only one synthetic pathway in which high levels of functionalization (90%) are found. A mechanism for the functionalization with TEMPO moieties using OS is proposed in which the formation of peroxide groups is suggested. The structures of the functionalized polymers are characterized in detail by (1)H NMR, (13)C NMR, DOF-COSY, and HETCOR. Bifunctional macroalkoxyamines are used to demonstrate how to extend the polymer chain for the synthesis of amphiphilic triblock copolymers by polymerizing St in a second block mediated by a nitroxide radical which provides the block length control.

引用

页码：1654 / 1662

页数：9

共 8 条

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