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Synthesis of hydroxy-functionalized star-branched PMMA by anionic polymerization

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Abstract

Living anionic polymerization has been exploited to synthesize hydroxy end-functionalized PMMA star-branched polymers. Protected hydroxy-functionalized alkyl lithium initiators have been used to initiate anionic polymerization of MMA. Subsequently the living chains with protected hydroxyl function have been used to cross-link ethylene glycol dimethacrylate (EGDMA) in order to form star-branched polymers with cross-linked EGDMA core via ‘arm-first’ method. The linear arms and the star molecules have been characterized by 1HNMR, GPC, and light scattering. Variation in the number of arms with arm molecular weight and cross-linker loading has been studied. Star-branched PMMA-OH with as many as ~10 arms could be successfully made. Increased molecular weight of PMMA-OH led to decrease in the number of arms incorporated due to increased steric hindrance on the core. Increase in EGDMA concentration slightly increased the arm incorporation.

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Author notes

  1. Durairaj Baskaran

    Present address: Department of Chemistry, University of Tennessee, Knoxville, TN, 37996, USA

Authors and Affiliations

  1. Division of Polymer Science and Engineering, National Chemical Laboratory, Pune, 411008, India

    Mahua Ganguly Dhara, Swaminathan Sivaram & Durairaj Baskaran

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  1. Mahua Ganguly Dhara
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  2. Swaminathan Sivaram
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  3. Durairaj Baskaran
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Correspondence to Mahua Ganguly Dhara or Swaminathan Sivaram.

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Dhara, M.G., Sivaram, S. & Baskaran, D. Synthesis of hydroxy-functionalized star-branched PMMA by anionic polymerization. Polym. Bull. 63, 185–196 (2009). https://doi.org/10.1007/s00289-009-0082-7

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  • DOI: https://doi.org/10.1007/s00289-009-0082-7

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