Easy Access to Amphiphilic Heterografted Poly(2-oxazoline) Comb Copolymers

被引：43
作者：
Weber, Christine [1 ,2 ]
Wagner, Michael [1 ,2 ]
Baykal, Duygu [3 ]
Hoeppener, Stephanie [1 ,2 ]
Paulus, Renzo M. [1 ,2 ]
Festag, Grit [1 ,2 ]
Altuntas, Esra [1 ,2 ]
Schacher, Felix H. [1 ,2 ]
Schubert, Ulrich S. [1 ,2 ,4 ]
机构：
[1] Univ Jena, Lab Organ & Macromol Chem IOMC, D-07743 Jena, Germany
[2] Univ Jena, JCSM, D-07743 Jena, Germany
[3] Bogazici Univ, Dept Chem, TR-34342 Bebek, Turkey
[4] Dutch Polymer Inst, NL-5612 AB Eindhoven, Netherlands
来源：
MACROMOLECULES | 2013年 / 46卷 / 13期
关键词：
GRAFT-COPOLYMERS; X-RAY; BEHAVIOR; BLOCK; POLYSTYRENE; BRUSHES; WATER; CRYSTALLIZATION; POLYMERIZATION; TEMPERATURE;
D O I：
10.1021/ma400947r
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 heterografted polymers with a polymethacrylate backbone and varying composition of oligomeric 2,oxazoline side chain was synthesized by copolymerization of oligo(2-ethyl-2-oxazoline)-methacrylate and oligo(2-n-nonyl-2-oxazoline)methacrylate (ONonOx) macromonomers using the reversible addition fragmentation chain transfer (RAFT) technique. Kinetic studies revealed pseudofirst order kinetics, PDI values below 1.3, and a slight enrichment of ONonOx side chains toward the end of the reaction. The heterografted comb polymers were characterized by means of H-1 NMR spectroscopy (0 to 100 mol 96 ONonOx) and size exclusion chromatography. Differential scanning calorimetry and wide-angle X-ray scattering revealed partial crystallinity of the lateral n-nonyl chain's within the ONonOx, domains. Depending on the composition of the amphiphilic copolymer, the comb polymers either formed unimers or aggregated. (super)structures in water, methanol, and ethanol, as investigated by dynamic light scattering and cryo-transmission electron-microscopy.
引用
收藏
页码：5107 / 5116
页数：10
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