Cazotti, Jaime C.; Fritz, Alexander T.; Garcia-Valdez, Omar; Smeets, Niels M. B.; Dube, Marc A.; Cunningham, Michael F. published the artcile< Graft modification of starch nanoparticles with pH-responsive polymers via nitroxide-mediated polymerization>, Name: 1-(Chloromethyl)-4-vinylbenzene, the main research area is starch nanoparticle graft modification nitroxide polymerization.
These macroalkoxyamines were then grafted to vinyl benzyl-functionalized SNP (SNP-VBC) to obtain pH-responsive materials. The grafting to approach and nitroxide-mediated polymerization (NMP) were used to graft modify starch nanoparticles (SNP) with pH-responsive polymers. SG1-capped poly(2-(dimethylamino)ethyl methacrylate-co-styrene), P(DMAEMA-co-S), and poly(2-(diethylamino)ethyl methacrylate-co-styrene), P(DEAEMA-co-S), with relatively low dispersity and high degree of livingness was synthesized in bulk via NMP using a com. available alkoxyamine. The grafted SNP were characterized by proton NMR spectroscopy, Fourier transform IR spectroscopy, thermogravimetric anal., and elemental anal. confirming the successful synthesis of these new materials. Low grafting efficiencies (∼6%) were observed for both SNP-grafted materials with pH-responsive polymers, as expected when using the grafting to approach. The pH-responsiveness of SNP-g-P(DMAEMA-co-S) and SNP-g-P(DEAEMA-co-S) was confirmed by measuring the ζ-potential at different pH values. At acidic conditions (pH 3-6) the grafted materials were protonated and exhibited pos. ζ-potential, whereas at basic conditions (pH 10-13) the same grafted materials were deprotonated and exhibited neg. ζ-potential.
Journal of Polymer Science (Hoboken, NJ, United States) published new progress about Emulsions. 1592-20-7 belongs to class chlorides-buliding-blocks, and the molecular formula is C9H9Cl, Name: 1-(Chloromethyl)-4-vinylbenzene.
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