Synthesis of Alternating Copolymers of N-Substituted Maleimides with Styrene via Atom Transfer Radical Polymerization

Li, Fu‐Mian; Chen, Guang-Qiang; Zhu, Ming‐Qiang; Zhou, Peng; Du, Fu-Sheng; Li, Zi‐Chen

doi:10.1021/bk-2000-0768.ch027

Cited by 5 publications

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“…Alternating copolymerizations of maleimides with styrene ,− and MMA have been carried out using copper-based ATRP. A linear increase of M n with conversion was observed up to M n ≈ 13 000, with M w / M n around 1.16−1.36.…”

Section: Miscellaneous Monomersmentioning

confidence: 99%

Atom Transfer Radical Polymerization

2001

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Section: Miscellaneous Monomersmentioning

confidence: 99%

Atom Transfer Radical Polymerization

2001

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“…CRP allows precise control over macromolecular structures. ,− However, only a few examples of well-defined alternating copolymers synthesized by CRP have been reported in the literature. The first example was the atom transfer radical copolymerization of acrylates with a large excess of less reactive electron-rich monomers, such as vinyl ethers and isobutene (Table ). , Since then, most of the studies have reported copolymers from a combination of comonomers that have a spontaneous tendency for alternation (Table ): such as a strong electron-accepting monomer (maleic anhydride, , butyl maleimide, or phenyl maleimide − ) and an electron-donating monomer (styrene). We recently reported, for the first time, the synthesis of a well-defined alternating copolymer, obtained through the combination of CRP and Lewis acids complexation techniques .…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Well-Defined Alternating Copolymers by Controlled/Living Radical Polymerization in the Presence of Lewis Acids

2003

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Several controlled/living radical polymerization (CRP) techniques (atom transfer radical polymerization (ATRP), nitroxide-mediated polymerization (NMP), iodide degenerative transfer polymerization (IDTP), and reversible addition-fragmentation transfer polymerization (RAFT)) were studied for the alternating copolymerization of a donor monomer (styrene) and an acceptor monomer (methyl methacrylate or methyl acrylate) complexed with Lewis acid. RAFT polymerization was found to be the most versatile system. The combination of RAFT and Lewis acids complexation techniques allows synthesis of well-defined alternating copolymers poly(styrene-alt-methyl methacrylate) with controlled molecular weight (up to M n ) 70 000 g mol -1 ), low polydispersities (Mw/Mn < 1.3), and controlled comonomer sequences (∼90% of alternating triads). These results were obtained in the presence of diethylaluminum chloride and ethylaluminum sesquichloride. Moreover, the alternating copolymers obtained in such copolymerizations retain chain end functionality and were used as macroinitiators for the synthesis of well-defined diblock copolymers poly(methyl methacrylate-alt-styrene)-b-polystyrene.

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Copolymerization

Barner‐Kowollik¹,

Coote²,

Davis³

et al. 2004

Encyclopedia of Polymer Science and Technology

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This article is primarily concerned with chain copolymerization. Chain copolymerization is important as it allows a wide array of functional molecules to be designed and incorporated into polymeric materials. The article starts with a general description of free‐radical copolymerization and the models that have been applied to facilitate mechanistic understanding. In recent years it has become evident that the reaction mechanism involved in free‐radical copolymerization propagation is appreciably more complicated than originally postulated in the terminal model developed back in the 1940s. For the simple prediction of composition the terminal model, although fairly crude, provides an adequate method in many instances. However, problems arise when it is used to study absolute rate coefficients (cross‐propagation rate coefficients) or when it is used to predict other quantities such as average propagation rates or sequence distribution. After consideration of copolymerization models, the article progresses to discuss the newly emerging field of controlled/living radical copolymerization, and the novel materials that can be made using these highly versatile synthetic methods. There is brief coverage of ionic chain copolymerization and cross‐linking copolymerization.

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Synthesis of Alternating Copolymers of N-Substituted Maleimides with Styrene via Atom Transfer Radical Polymerization

Cited by 5 publications

References 0 publications

Atom Transfer Radical Polymerization

Atom Transfer Radical Polymerization

Synthesis of Well-Defined Alternating Copolymers by Controlled/Living Radical Polymerization in the Presence of Lewis Acids

Copolymerization

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