Isospecific polymerizations of alkyl methacrylates with a bis(alkyl)Yb complex and formation of stereocomplexes with syndiotactic poly(alkyl methacrylate)s

Tetrahedron ◽  
2003 ◽  
Vol 59 (52) ◽  
pp. 10409-10418 ◽  
Author(s):  
Guizhong Qi ◽  
Yuu Nitto ◽  
Akira Saiki ◽  
Taketoshi Tomohiro ◽  
Yuushou Nakayama ◽  
...  
Keyword(s):  
Alkyl Methacrylate ◽  
Alkyl Methacrylates

scholarly journals Pyrolysis of Copolymers Based on Alkyl Methacrylates with C1-C8 Alkyl Chain

2013 ◽  
Vol 6 ◽  
pp. 63-69
Author(s):  
Zbigniew Czech ◽  
Agnieszka Kowalczyk ◽  
Dominika Sowa
Keyword(s):  
Thermal Degradation ◽  
Alkyl Chain ◽  
Degradation Products ◽  
Side Chain ◽  
Pyrolysis Gas ◽  
Alkyl Methacrylate ◽  
Methacrylate Copolymers ◽  
Thermal Degradation Products ◽  
By Products ◽  
Alkyl Methacrylates

The manuscript describes pyrolysis of copolymers based on selected alkyl methacrylates containing C1-C8 alkyl side chain at temperatures between 250 °C and 400 °C which was studied using pyrolysis-gas chromatography. The kind and composition of thermal degradation products gave practical information about the mechanism of pyrolysis of copolymers synthesized by using of typical commercially available alkyl methacrylates. It was observed that the main thermal degradation products from alkyl methacrylate copolymers are monomers, in this case alkyl methacrylates using by synthesis. Other pyrolysis by-products formed during thermal degradation were carbon dioxide, carbon monoxide, methane, ethane, methanol, ethanol and propanol-1.

A versatile strategy for mechanically durable nanocomposite cryogels based on cationic (alkyl)methacrylates and hydrophilic bentonite via freezing (cryo)polymerization

Soft Matter ◽  
2019 ◽  
Vol 15 (15) ◽  
pp. 3208-3226 ◽  
Author(s):  
Beril Tanc ◽  
Nermin Orakdogen
Keyword(s):  
Alkyl Methacrylate ◽  
Nanocomposite Gels ◽  
Simple Strategy ◽  
Alkyl Methacrylates

A simple strategy for the preparation of organic–inorganic (alkyl)methacrylate-based nanocomposite gels was established via freezing (cryo)polymerization.

Association of Graft Copolymers of Alkyl Methacrylates with α-Methyl-ω-hydroxy-poly(oxyethylene) ethacrylates

1995 ◽  
Vol 60 (11) ◽  
pp. 1971-1985 ◽  
Author(s):  
Čestmír Koňák ◽  
Zdeněk Tuzar ◽  
Pavla Kopečková ◽  
Joseph D. Andrade ◽  
Jindřich Kopeček
Keyword(s):  
Light Scattering ◽  
Graft Copolymers ◽  
Water Solution ◽  
Pure Water ◽  
Solution Properties ◽  
Monomer Composition ◽  
Special Procedure ◽  
Methyl Cellosolve ◽  
Hexyl Methacrylate ◽  
Alkyl Methacrylates

Solution properties of the statistical copolymers of alkyl methacrylates (AMA) with α-methyl-ω-hydroxy-poly(oxyethylene) methacrylates (MPOEMA) (nonionic polysoaps) were studied using static and dynamic ligh scattering as a function of monomer composition and concentration in aqueous and methyl cellosolve solutions. The solubility of the copolymers in water was found to be dependent on molar contant of AMA. While copolymers with low content of hexyl methacrylate (HMA) (0 and 20 mole %) were directly soluble in water, forming true solutions with a low content of large swollen aggregates, copolymers with a higher content of HMA or lauryl methacrylate (LMA) were not directly dispersable in water. A special procedure, the stepwise dialysis from methyl cellosolve solutions against water, had to be used to prepare them in the pseudomicellar form. The copolymers were directly soluble in methyl cellosolve and its water solution containing up to 60 vol.% of water. Nevertheless, the light scattering experiments were dominated by light scattering of swollen particles of aggregated copolymer molecules. The copolymers were not soluble in the mixtures containing 70-100 vol.% of water. Paramaters of aggregates in the mixture with 60 vol.% of water and in pure water were found to be very similar.

Poly( n ‐alkyl methacrylate)s as Metallocene Catalyst Supports in Nonpolar Media

2019 ◽  
Vol 220 (19) ◽  
pp. 1900259 ◽  
Author(s):  
Alba Nidia Estrada‐Ramirez ◽  
Carolina Ventura‐Hunter ◽  
Jürgen Vitz ◽  
Enrique Díaz‐Barriga Castro ◽  
René D. Peralta‐Rodriguez ◽  
...  
Keyword(s):  
Metallocene Catalyst ◽  
Catalyst Supports ◽  
Alkyl Methacrylate
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