Dodecyl methacrylate

Smith et al.511 have recently suggested a composite model based on similar considerations to predict k over the entire chain length range. Experimental data for k A for dodecyl methacrylate polymerization consistent with such a model have been provided by Buback et rd. J... 

Solubilization of a graft copolymer comprising a hydrophobic poly(dodecyl-methacrylate) backbone and hydrophilic poly(ethylene glycol) monomethyl ether side chains in water/AOT/cyclohexane w/o microemulsions was rationalized in terms of the backbone dissolved in the continuous apolar phase and the side chains entrapped within the aqueous micellar cores [189],... 

Another way for covalent immobilisation is to synthesise indicator chemistry with polymerizable entities such as methacrylate groups (Figure 4). These groups can then be copolymerized with monomers such as hydrophobic methyl methacrylate or hydrophilic acryl amide to give sensor copolymers. In order to obtain self-plasticized materials, methacrylate monomers with long alkyl chains (hexyl or dodecyl methacrylate) can be used. Thus, sensor copolymers are obtained which have a Tg below room temperature. Similarly, ionophores and ionic additives (quaternary ammonium ions and borates) can be derivatised to give methacrylate derivatives. 

Figure 5.30 The low shear viscosity versus chain overlap for polyacrylamide (PAM) and acrylamide dodecyl methacrylate copolymers (DMA-AM). The figures refer to the mole percentage of hydrophobic chains...

Which would be more apt to exhibit side chain crystallization (a) poly(methyl methacrylate) or (b) poly(dodecyl methacrylate) ... 

In addition to MMA, a variety of methacrylic esters were polymerized rapidly to the corresponding polymers with narrow MWDs in the presence of methylaluminum bis(2-ferf-butyl-4-methoxyphenolate) (3c). The successful examples include ethyl methacrylate (EMA), isopropyl methacrylate ( °PMA), n-butyl methacrylate ("BMA), isobutyl methacrylate ( °BMA), benzyl methacrylate (BnMA), and dodecyl methacrylate (Cj2MA), where the Mn values were all close to the predicted values (Mn j ) with the Mw/Mn ratios below 1.1 (Table 3, runs 1-4,6,7). The polymerization of ferf-butyl methacrylate ( BMA) is the only exception, where the monomer conversion hardly increased even after 24 h. 

Figure 6. Weight gain as a function of radiation dose for an Esparto based paper with ethyl acrylate methy1 methacrylate (Q) f ethyl acrylate butyl methacrylate ( ) and ethyl acrylate dodecyl methacrylate ( ). ... 

Little has been done to date to tailor the surface chemistry of the stationary phase in CEC. Novotny prepared a series of monolithic columns incorporating a variety of monomers that differ in the length of their pendant alkyl chains [35]. Unfortunately, the performance of these monoliths containing butyl, hexyl, and dodecyl methacrylate... 

Uranyl ions 2,3-Epithiopropyl methacrylate-dodecyl methacrylate-methacrylamide propyl trimethyl ammonium terpolymer Anion-exchange membranes R Nonaka and Kawamoto (1995)... 

By means of the spatially intermittent reactor, Ito and O Driscoll determined, for example, the absolute rate constant of termination, fct, for methyl methacrylate copolymerization with butyl or dodecyl methacrylate. The value of /ct is a function of the monomer mixture composition [89]. 

Preparation of Poly(Methacrylate-b-(Dodecyl Methacrylate-co -Methacrylate))... 

Acrylic acid Acrylonitrile n-Butyl acrylate n-Butyl methacrylate 4-Chlorostyrenc Divinyl benzene Dodecyl methacrylate Ethyl acrylate Ethylene dimethacrylate... 

Poly(butyl methacrylate) T 2G°C g Poly (octyl methacrylate) T —20 °C s Poly(dodecyl methacrylate) T —65 °C... 

It is well known that emulsion polymerizations of highly water-insoluble monomers such as octadecyl methacrylate (OM), dodecyl methacrylate (DM), and stearyl acrylate (SA) are generally not feasible using traditional surfactant... 

Dispersion polymerization has also been applied to the ring opening polymerization of e-caprolactone and lactide in heptane-dioxane (4/1 v/v) with poly(dodecyl methacrylate)-g-poly(e-caprolactone) as stabilizer [97]. Diethyl-aluminium ethoxide and tin(II) 2-ethylhexanoate were used as initiators in these two systems, respectively, to obtain functional microspheres with a narrow particle size distribution and a narrow molecular weight distribution [98]. Table 2 provides an overview of microspheres obtained by living dispersion polymerization. 

Dodecyl methacrylate (DMA) and stearyl methacrylate (SMA) are efficiently reactive coemulsifiers in the St mini-emulsion polymerization using SDS as the emulsifier [ 13]. The high coemulsifier (hydrophobe) activity of these unsaturated compounds results from the fact that the Rp data are almost the same in the mini-emulsion polymerizations stabilized by SDS/CA, SDS/DM A, SDS/SMA and SDS/HD. The average particle size (D) of the reaction mixture comprising both the monomer droplets and latex particles in the SDS/CA or SDS/DMA stabilized polymerization decreases rapidly from ca. 300-350 nm to a minimum (ca. 115— 125 nm), followed by a gradual increase to a plateau (ca. 125-150 nm). The initial abrupt decrease in D is attributed to the generation of particle nuclei by ho-... 

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