Anionic polymerization of methacrylates. Novel functional polymers and copolymers

Anderson, B. C.; Andrews, Gerald D.; Arthur, P.; Jacobson, H. W.; Melby, L. R.; Playtis, A. J.; Sharkey, W. H.

doi:10.1021/ma50006a093

Cited by 158 publications

(66 citation statements)

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“…PHEMA macromonomers were first prepared by living anionic polymerization of the trimethylsilyl-protected monomer (TMSEMA) (a), followed by end-capping with VBB or with EO and MAC. VBB was used instead of VBC because the former was reported to react satisfactorily with the living (meth)acrylate anions (12)(13)(14). Figure 3 shows typical 'H NMR spectra.…”

Section: Resultsmentioning

confidence: 99%

Syntheses and interfacial characterization of graft copolymers from styrene and 2-hydroxyethyl methacrylate that comprise either trunks or branches

Yoshida¹,

Itsuno²,

Ito³

1995

Can. J. Chem.

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Polystyrene (PS) and poly(2-hydroxyethyl methacrylate) (PHEMA) macromonomers with either p-vinylbenzyl or methacrylate end groups were prepared by living anionic polymerizations of styrene and 2-(trimethylsilyloxy)ethyl methacrylate, respectively, followed by appropriate end-capping. They were radically copolymerized with 2-hydroxyethyl methacrylate and styrene, respectively, to afford PS-g-PHEMA and PHEMA-g-PS, having PS trunks with PHEMA branches or the reverse architecture. 1H NMR spectra of the graft copolymers in deuterated methanol showed their micelle formation with PS and PHEMA chains as the core and the shell, respectively. In chloroform the reverse micelles were observed. Contact angle measurements of water on the graft copolymer films revealed that PS chains were generally dominant on the free surface. The films either cast from methanol or after immersion into water, however, were apparently wettable, indicating dominant PHEMA chains on the surface. Keywords: styrene, 2-hydroxyethyl methacrylate, graft copolymer, micelle formation, wettability.

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Section: Resultsmentioning

confidence: 99%

Syntheses and interfacial characterization of graft copolymers from styrene and 2-hydroxyethyl methacrylate that comprise either trunks or branches

Yoshida¹,

Itsuno²,

Ito³

1995

Can. J. Chem.

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“…1, curve 1 for single wavelength detection, or Fig. 2 for full spectra) which means that UV detection does not provide a linear response to the mole fraction of PMMA for degree of polymerization P, 5 6. It should be noted that in addition to the nonlinearity of response to UV detection that we note here, the indices of refraction of solvents used for macromolecule can also have an effect on their absorption spectra.…”

Section: Discussionmentioning

confidence: 99%

A caveat when determining molecular weight distributions of methacrylate oligomers

Gridnev¹,

Ittel²,

Fryd³

1995

J. Polym. Sci. A Polym. Chem.

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“…That said it is assumed that in most cases the monoadduct is formed, homopolymerization does not occur and DPE has therefore been used to initiate and end-cap polymers prepared by anionic polymerization. [29][30][31][32][33] DPE is particularly useful for the initiation of acrylate and methacrylate monomers where the steric bulk prevents side reactions including attack by the carbanion upon 6 the carbonyl group of the monomer. DPE has also been used to moderate the reactivity of propagating species such as polystyryl lithium before the addition of methyl methacrylate to prepare a polystyrene-block-poly(methyl methacrylate) copolymer.…”

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confidence: 99%

Monomer Sequence Control via Living Anionic Copolymerization: Synthesis of Alternating, Statistical, and Telechelic Copolymers and Sequence Analysis by MALDI ToF Mass Spectrometry

et al. 2015

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(2015) 'Monomer sequence control via living anionic copolymerization : synthesis of alternating, statistical, and telechelic copolymers and sequence analysis by MALDI ToF mass spectrometry. ', Macromolecules., 48 (3). pp. 610-628.Further information on publisher's website:Publisher's copyright statement:This document is the Accepted Manuscript version of a Published Work that appeared in nal form in Macromolecules, copyright c 2015 American Chemical Society after peer review and technical editing by the publisher. To access the nal edited and published work see http://dx.doi.org/10.1021/ma5016038. Additional information:Use policyThe full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-prot purposes provided that:• a full bibliographic reference is made to the original source • a link is made to the metadata record in DRO • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders.Please consult the full DRO policy for further details. 3LE. United Kingdom ABSTRACT: Diphenylethylene (DPE) is a monomer which has attracted significant interest from both academia and industry. DPE can undergo (co)polymerization by living anionic polymerization but is incapable of forming a homopolymer due to steric hindrance. Herein the copolymerization of DPE and 1,1-bis(4-tert-butyldimethylsiloxyphenyl)ethylene (DPE-OSi)with styrene or butadiene is described in order to produce (functional) copolymers with controlled co-monomer sequences -either alternating or telechelic. The copolymer sequences are inherently controlled by relative reactivity ratios, which in turn can be tuned by both monomer structure and by the polarity of the polymerization solvent. The composition of the copolymers prepared in this study were analyzed by 1 H NMR spectroscopy and MALDI ToF 2 mass spectrometry, the latter offering a unique opportunity to demonstrate perfect alternating sequences and insight into other sequences such as telechelic polymers.

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Anionic polymerization of methacrylates. Novel functional polymers and copolymers

Cited by 158 publications

References 0 publications

Syntheses and interfacial characterization of graft copolymers from styrene and 2-hydroxyethyl methacrylate that comprise either trunks or branches

Syntheses and interfacial characterization of graft copolymers from styrene and 2-hydroxyethyl methacrylate that comprise either trunks or branches

A caveat when determining molecular weight distributions of methacrylate oligomers

Monomer Sequence Control via Living Anionic Copolymerization: Synthesis of Alternating, Statistical, and Telechelic Copolymers and Sequence Analysis by MALDI ToF Mass Spectrometry

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