Combination of ATRA and ATRC for the Synthesis of Periodic Vinyl Copolymers. Issue 4 (4th December 2013)

• Record Type: Journal Article
• Authors: Wang, Chun‐Hao; Song, Zi‐Yuan; Deng, Xin‐Xing; Zhang, Li‐Jing; Du, Fu‐Sheng; Li, Zi‐Chen; Lutz, J.‐F.; Sumerlin, B.; Matyjaszewski, K.
• Is Part Of: Macromolecular rapid communications. Volume 35:Issue 4(2014:Feb.)
• Page Start: 474
• Page End: 478
• Publication Date: 2013-12-04
• Subjects: Macromolecules -- Periodicals; Polymers -- Periodicals; Chemistry -- Periodicals; 547.705
• DOI: 10.1002/marc.201300721
• Languages: English
• ISSNs: 1022-1336

Abstract

<abstract abstract-type="main" xml:lang="en"> <title> <x xml:space="preserve">Abstract</x> </title> <p>A new approach to periodic vinyl copolymers via combination of atom transfer radical addition (ATRA) and atom transfer radical coupling (ATRC) is reported. The two examples are methyl methacrylate (MMA) and styrene (St) periodic copolymer (<bold>P(SMMS)</bold>) and acrylonitrile (AN) and St periodic copolymer (<bold>P(SAAS)</bold>). First, two monomer sequence units (MSU) with built‐in sequence, <bold>SMMS</bold> and <bold>SAAS</bold>, are synthesized through the controlled ATRA of two ATRP initiators with St. Then, the ATRC of <bold>SMMS</bold> and <bold>SAAS</bold> are conducted at high radical conditions to generate two types of high‐molecular‐weight copolymers, <bold>P(SMMS)</bold> and <bold>P(SAAS)</bold>. Though side reactions can not be totally avoided, characterizations of the polymer structure with a variety of means confirm that the main chain structures of <bold>P(SMMS)</bold> and <bold>(PSAAS)</bold> are predominantly with the periodic sequences from the MSUs. Attempts to suppress the side reactions are successful via the MNP‐mediated ATRC of <bold>SMMS</bold> and <bold>SAAS</bold>. <boxed-text content-type="graphic" position="anchor" orientation="portrait"><graphic position="anchor" mimetype="image" xlink:href="ark:/27927/pgg4svm6q6k" orientation="portrait" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink" /></boxed-text></p> </abstract>