scholarly journals Controlling Dispersity in Aqueous Atom Transfer Radical Polymerization: Rapid and Quantitative Synthesis of One-Pot Block Copolymers

2021 ◽  
Author(s):  
Hyun Suk Wang ◽  
Kostas Parkatzidis ◽  
Simon Harrisson ◽  
Nghia Truong Phuoc ◽  
Athina Anastasaki
Keyword(s):  
Block Copolymers ◽  
Atom Transfer Radical Polymerization ◽  
Radical Polymerization ◽  
Strong Influence ◽  
Material Design ◽  
Atom Transfer ◽  
One Pot ◽  
Polymer Properties ◽  
Quantitative Synthesis ◽  
Key Parameter

The dispersity (Ɖ) of a polymer is a key parameter in material design, and variations in Ɖ can have a strong influence on fundamental polymer properties. Despite its importance, current...

scholarly journals Synthesis of Poly(methyl methacrylate)-b-poly(N-isopropylacrylamide) Block Copolymer by Redox Polymerization and Atom Transfer Radical Polymerization

2018 ◽  
Vol 18 (3) ◽  
pp. 537 ◽  
Author(s):  
Melahat Göktaş ◽  
Guodong Deng
Keyword(s):  
Block Copolymers ◽  
Methyl Methacrylate ◽  
Atom Transfer Radical Polymerization ◽  
Radical Polymerization ◽  
Gel Permeation Chromatography ◽  
High Yield ◽  
Resonance Spectroscopy ◽  
Atom Transfer ◽  
Poly Methyl Methacrylate ◽  
Redox Polymerization

Poly(methyl methacrylate)-b-poly(N-isopropylacrylamide) [PMMA-b-PNIPAM] block copolymers were obtained by a combination of redox polymerization and atom transfer radical polymerization (ATRP) methods in two steps. For this purpose, PMMA macroinitator (ATRP-macroinitiator) was synthesized by redox polymerization of methyl methacrylate and 3-bromo-1-propanol using Ce(NH4)2(NO3)6 as a catalyst. The synthesis of PMMA-b-PNIPAM block copolymers was carried out by means of ATRP of ATRP-macroinitiator and NIPAM at 60 °C. The block copolymers were obtained in high yield and high molecular weight. The characterization of products was accomplished by using multi instruments and methods such as nuclear magnetic resonance spectroscopy, Fourier transform infrared spectroscopy, gel permeation chromatography, and thermogravimetric analysis.

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