Pentablock star shaped polymers in less than 90 minutes via aqueous SET-LRP

被引：70

作者：

Aksakal, R. ^{[1
]}

Resmini, M. ^{[2
]}

Becer, C. R. ^{[1
]}

机构：

[1] Queen Mary Univ London, Sch Biol & Chem Sci, London E1 4NS, England

[2] Queen Mary Univ London, Sch Engn & Mat Sci, London E1 4NS, England

来源：

POLYMER CHEMISTRY | 2016年 / 7卷 / 01期

关键词：

LIVING RADICAL POLYMERIZATION; MULTIBLOCK COPOLYMERS; COMBINATION; GLYCOPOLYMERS; EFFICIENT; MONOMER; CLICK; CORE;

D O I：

10.1039/c5py01623a

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The synthesis of multi-block star-shaped copolymers via SET-LRP in aqueous solution has been reported for the first time. This aqueous polymerization technique allows rapid and direct access to acrylamide based star-shaped polymers. It is possible to synthesize an A-B-A-B-C penta-block copolymer in <90 minutes in total. To achieve this, we have investigated a water-soluble 3-arm initiator based on a glycerol structure for the first time. Using N-isopropylacrylamide 3-arm star-shaped polymers were prepared with DP = 60 to 240 with full conversions in <30 minutes with polydispersities <1.11. The scope of the reaction was demonstrated by synthesizing diblock copolymers using a combination of NIPAM, DMA and HEAm in different ratios. In addition a sequence controlled 3-arm pentablock copolymer has been obtained with excellent control over molecular weight distribution (PDI < 1.14) as evidenced by GPC, H-1 NMR, and MALDI-TOF MS.

引用

页码：171 / 175

页数：5

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