Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/15193
Title: Precision synthesis of acrylate multiblock copolymers from consecutive microreactor RAFT polymerizations
Authors: Vandenbergh, Joke 
Ogawa, Thales de moraes
Junkers, Thomas 
Issue Date: 2013
Publisher: WILEY-BLACKWELL
Source: JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY, 51 (11), p. 2366-2374
Abstract: Well-defined acrylate RAFT polymers and multiblock-copolymers have been synthesized via the use of a continuous-flow microreactor, in which polymerizations could be executed in 520 min reaction time. First, Poly(n-butyl acrylate) (PnBuA) was synthesized in the micro-flowreactor by using two different trithiocarbonate RAFT agents. Reaction time and reaction temperature were optimized and collected samples were directly studied with NMR, SEC and ESI-MS to determine conversion, molar mass and end group fidelity. Using the continuous flow technique, highly reproducible and fast polymerizations yielded quantitatively functionalized PnBuA in a very facile and efficient manner. One batch of RAFT acrylate polymer with a molar mass of 1100 g mol1 and excellent end group fidelity was employed as a macro-RAFT agent for the subsequent copolymerization with different acrylate monomers (2-ethylhexyl acrylate, t-butyl acrylate, n-butyl acrylate). Using this procedure, a sequential multiblock-copolymer (Mn = 31,200 g mol1, PDI = 1.46) consisting of five consecutive acrylate blocks was synthesized. This study clearly demonstrates the potential of using a continuous-flow microreactor for subsequent RAFT polymerizations towards well-defined multiblock-copolymers. (c) 2013 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem, 2013, 51, 2366-2374
Notes: Univ Hasselt, Polymer React Design Grp, Inst Mat Res IMO, B-3590 Diepenbeek, Belgium. Univ Sao Paulo, Escola Polytecn, Assoc Engn Quim, BR-05508010 Butanta Sao Paulo, Brazil.
Keywords: Polymer Science;acrylates; block-copolymers; continuous flow chemistry; microreactor technology; reversible addition fragmentation chain transfer (RAFT); radical polymerization
Document URI: http://hdl.handle.net/1942/15193
ISSN: 0887-624X
e-ISSN: 1099-0518
DOI: 10.1002/pola.26593
ISI #: 000318244300003
Category: A1
Type: Journal Contribution
Validations: ecoom 2014
Appears in Collections:Research publications

Show full item record

SCOPUSTM   
Citations

69
checked on Sep 3, 2020

WEB OF SCIENCETM
Citations

72
checked on May 13, 2022

Page view(s)

44
checked on May 16, 2022

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.