Raus, Vladimir published the artcileATRP of POSS Monomers Revisited: Toward High-Molecular Weight Methacrylate-POSS (Co)Polymers, Related Products of alcohols-buliding-blocks, the publication is Macromolecules (Washington, DC, United States) (2014), 47(21), 7311-7320, database is CAplus.
For the first time, ATRP was successfully employed for homopolymerization of a com. methacrylate-functionalized polyhedral oligomeric silsesquioxane (POSS) monomer, iBuPOSSMA, to high mol. weights It was found that iBuPOSSMA has a low ceiling temperature (Tc); therefore, low temperatures and/or high initial monomer concentrations need to be used in order to avoid low ds.p. that had been observed previously. The values of Tc, as well as of the polymerization enthalpy ΔHp and entropy ΔSp were determined to be 130° (at [M]0 = 1 M), -41 kJ mol-1, and -101 J mol-1 K-1, resp. Under optimized conditions, poly(iBuPOSSMA) homopolymers having low dispersity and high Mn, ranging from 23 000 to 460 000, were obtained in a well-controlled ATRP process. Moreover, various block copolymers having high-Mn poly(iBuPOSSMA) blocks were prepared by copolymerization of iBuPOSSMA with Me methacrylate and styrene.
Macromolecules (Washington, DC, United States) published new progress about 1139-46-4. 1139-46-4 belongs to alcohols-buliding-blocks, auxiliary class Benzene,Phenol, name is 4-(2,4,4-Trimethylpentan-2-yl)benzene-1,2-diol, and the molecular formula is C14H22O2, Related Products of alcohols-buliding-blocks.
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