Physically Controlled Radical Polymerization of Vaporized Vinyl Monomers on Surfaces. Synthesis of Block Copolymers of Methyl Methacrylate and Styrene with a Conventional Free Radical Initiator

2003 ◽  
Vol 36 (16) ◽  
pp. 5974-5981 ◽  
Author(s):  
Mikio Yasutake ◽  
Shigehiro Hiki ◽  
Yoshito Andou ◽  
Haruo Nishida ◽  
Takeshi Endo
Keyword(s):  
Free Radical ◽  
Block Copolymers ◽  
Methyl Methacrylate ◽  
Radical Polymerization ◽  
Controlled Radical Polymerization ◽  
Vinyl Monomers ◽  
Radical Initiator ◽  
Free Radical Initiator

Viscosity effects in the free-radical polymerization of methyl methacrylate

1977 ◽  
Vol 357 (1689) ◽  
pp. 183-192 ◽  
Keyword(s):  
Free Radical ◽  
Methyl Methacrylate ◽  
Radical Polymerization ◽  
Kinetic Scheme ◽  
Translational Diffusion ◽  
Chain Termination ◽  
Polymerization Rate ◽  
Solution Viscosity ◽  
Viscosity Effects ◽  
Free Radical Initiator

Methyl methacrylate has been polymerized in the presence of poly(methyl methacrylate) by using a free-radical initiator. The efficiency of the initiator is shown to be independent of the viscosity. At high viscosities, chain termination was influenced by the rate of translational diffusion of the polymer radicals. The dependence of the polymerization rate on viscosity is less than that predicted by a simple kinetic scheme. It appears that only those radicals which are above a certain size have their chain termination reactions controlled by the solution viscosity. This limiting size decreases as the viscosity increases.

Synthesis and thermal properties of triblock copolymers of methyl methacrylate using combination of anionic and controlled radical polymerization: Poly(methyl methacrylate) center block bearing different microstructures

e-Polymers ◽  
2012 ◽  
Vol 12 (1) ◽  
Author(s):  
Zhengji Song ◽  
Carole Pelletier ◽  
Yinghua Qi ◽  
Jasim Ahmed ◽  
Sunil K. Varshney ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Thermal Properties ◽  
Block Copolymers ◽  
Methyl Methacrylate ◽  
Radical Polymerization ◽  
Triblock Copolymers ◽  
Controlled Radical Polymerization ◽  
Alkyl Methacrylate ◽  
Poly Methyl Methacrylate ◽  
H Nmr

AbstractABA and/or ABC type triblock copolymers were synthesized by living anionic and controlled radical polymerization in which poly(methyl methacrylate) was used as central block. The structural composition of these block copolymers were determined by 1H NMR. The block length/molecular weight and microstructure of these polymers were measured by SEC. The microstructure of resultant central alkyl methacrylate block can be tailored from highly syndiotactic to highly isotactic structure by varying the solvent and/or initiator. The thermal and rheological properties of center poly(methyl methacrylate) block and poly(styreneb- methyl methacrylate-b- styrene) tri block copolymers were studied in detail.

scholarly journals Methylenelactide: vinyl polymerization and spatial reactivity effects

2016 ◽  
Vol 12 ◽  
pp. 2378-2389 ◽  
Author(s):  
Judita Britner ◽  
Helmut Ritter
Keyword(s):  
Free Radical ◽  
Methyl Methacrylate ◽  
Radical Polymerization ◽  
Chain Transfer ◽  
Free Radical Polymerization ◽  
Controlled Radical Polymerization ◽  
Experimental Results ◽  
Cyclic Monomer ◽  
Vinyl Polymerization ◽  
Reversible Addition

The first detailed study on free-radical polymerization, copolymerization and controlled radical polymerization of the cyclic push–pull-type monomer methylenelactide in comparison to the non-cyclic monomer α-acetoxyacrylate is described. The experimental results revealed that methylenelactide undergoes a self-initiated polymerization. The copolymerization parameters of methylenelactide and styrene as well as methyl methacrylate were determined. To predict the copolymerization behavior with other classes of monomers, Q and e values were calculated. Further, reversible addition fragmentation chain transfer (RAFT)-controlled homopolymerization of methylenelactide and copolymerization with N,N-dimethylacrylamide was performed at 70 °C in 1,4-dioxane using AIBN as initiator and 2-(((ethylthio)carbonothioyl)thio)-2-methylpropanoic acid as a transfer agent.

scholarly journals Block copolymer synthesis using free-radical polymerization and thiol–maleimide ‘click’ conjugation

RSC Advances ◽  
2021 ◽  
Vol 11 (55) ◽  
pp. 34631-34635
Author(s):  
Talena Rambarran ◽  
Heather D. Sheardown
Keyword(s):  
Free Radical ◽  
Block Copolymer ◽  
Block Copolymers ◽  
Radical Polymerization ◽  
Free Radical Polymerization ◽  
Radical Initiator ◽  
Acrylic Monomers

A versatile method of making block copolymers using conventional radical polymerization of acrylic monomers from a functional radical initiator followed by ‘click’ ligation is described.

Evaluation of ruthenium-based complexes for the controlled radical polymerization of vinyl monomers

2001 ◽  
Vol 79 (5-6) ◽  
pp. 529-535 ◽  
Author(s):  
François Simal ◽  
Dominique Jan ◽  
Lionel Delaude ◽  
Albert Demonceau ◽  
Marie-Rose Spirlet ◽  
...  
Keyword(s):  
Methyl Methacrylate ◽  
Atom Transfer Radical Polymerization ◽  
Key Words ◽  
Radical Polymerization ◽  
Homogeneous Catalysis ◽  
Kinetic Data ◽  
Controlled Radical Polymerization ◽  
Vinyl Monomers ◽  
Atom Transfer ◽  
X Ray

New complexes of the type RuCl2(p-cymene)L where the ligand L is either a phosphine or a stable triazolinylidene carbene have been tested and compared to the Grubbs' benzylidene complex RuCl2(=CHPh)(PCy3)2 as catalyst precursors for the controlled atom transfer radical polymerization (ATRP) of methyl methacrylate and of various para-substituted styrenes. Kinetic data and Hammett ρ constants are reported, as well as the X-ray structure of the ortho-metallated triazolinylidene-ruthenium(II) complex RuCl(p-cymene)[1,2-phenylene[3,4-diphenyl-1H-1,2,4-triazol-1-yl-5(4H)-ylidene]].Key words: ruthenium, carbene, chelate complex, homogeneous catalysis, atom transfer radical polymerization.

Graphene Oxide as a Radical Initiator: Free Radical and Controlled Radical Polymerization of Sodium 4-Vinylbenzenesulfonate with Graphene Oxide

2016 ◽  
Vol 5 (2) ◽  
pp. 199-202 ◽  
Author(s):  
Dmitry Voylov ◽  
Tomonori Saito ◽  
Bradley Lokitz ◽  
David Uhrig ◽  
Yangyang Wang ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Free Radical ◽  
Radical Polymerization ◽  
Controlled Radical Polymerization ◽  
Radical Initiator
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