Synthesis of CO2-responsive cellulose nanocrystals by surface-initiated Cu(0)-mediated polymerisation

被引：39

作者：

Arredondo, Joaquin

Jessop, Philip G. ^{[2
]}

Champagne, Pascale ^{[1
,3
]}

Bouchard, Jean ^{[4
]}

Cunningham, Michael F. ^{[1
]}

机构：

[1] Queens Univ, Dept Chem Engn, Kingston, ON K7L 3N6, Canada

[2] Queens Univ, Dept Chem, Kingston, ON K7L 3N6, Canada

[3] Queens Univ, Dept Civil Engn, Kingston, ON K7M 9H7, Canada

[4] FPInnovat, 570 St Jean Blvd, Pointe Claire, PQ H9R 3J9, Canada

来源：

GREEN CHEMISTRY | 2017年 / 19卷 / 17期

基金：

加拿大自然科学与工程研究理事会;

关键词：

LIVING RADICAL POLYMERIZATION; EMULSION POLYMERIZATION; SWITCHABLE SURFACTANTS; SET-LRP; POLY(2-(DIMETHYLAMINO)ETHYL METHACRYLATE); 2-(DIMETHYLAMINO)ETHYL METHACRYLATE; AMBIENT-TEMPERATURE; GRAFT MODIFICATION; ATRP; COPOLYMERS;

D O I：

10.1039/c7gc01798g

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Cellulose nanocrystals (CNC) were converted into a CO2-responsive composite nanomaterial by grafting poly(dimethylaminoethy methacrylate) (PDMAEMA) and poly(diethylaminoethyl methacrylate) (PDEAEMA) on its surface using a grafting-from approach via surface-initiated copper(0)-mediated polymerisation (SI-Cu(0)-ATRP). The Cu(0)-ATRP homopolymerisation kinetics of these monomers were first studied to determine suitable conditions to perform the grafting step. Reasonable molecular weight control and livingness were observed during the polymerisations. Following functionalization of the CNC with ATRP initiating groups, a grafting-from approach was employed to graft PDMAEMA and PDEAEMA onto the CNC surface. The surface charge of the graft-modified CNC could be reversibly switched by protonation/ deprotonation of the tertiary amine groups simply by sparging with CO2 and N-2, respectively.

引用

页码：4141 / 4152

页数：12

共 76 条

[1] Ambient temperature rapid SARA ATRP of acrylates and methacrylates in alcohol-water solutions mediated by a mixed sulfite/Cu(II)Br2 catalytic system [J].