Shin, Isaac published the artcileViscosifying a Noncovalently Joined Polymer Nanoparticle Solution upon Heating, Formula: C16H30O2, the main research area is hydrogen bond polymethacrylate nanoparticle solution heating aggregation.
We report the synthesis of a series of statistical terpolymer poly[(Me methacrylate)-co-lauryl methacrylate-co-2-((3,5-bis(4-carbamoyl-3-(trifluoromethyl)phenoxy)benzyloxy)carbonylamino)ethyl methacrylate] (P(MMA-co-LMA-co-BMA)) by reversible addition-fragmentation chain transfer polymerization and their aggregation behaviors in solution In toluene, the solution behavior of terpolymer was controlled by the molar fractions of lauryl methacrylate (LMA) and benzamide-containing methacrylate (BMA) in the polymer, which increased solubility and promoted hydrogen bonding between the primary aromatic amides, resp. Temperature-dependent 1H NMR spectroscopy also indicated gradual dissociation of the hydrogen bonds with increasing temperature For the polymer containing 2.7 mol % of LMA and 2.7 mol % of BMA repeating units, we demonstrated that dissolving the polymer in THF as a good solvent and switching the solvent with toluene produced polymer nanoparticles with diameters of several tens of nanometers, as observed by dynamic light scattering. Intramol. hydrogen bonding was dominant and induced the noncovalent chain collapse. When the temperature of the particle dispersion in toluene at a concentration > 30 mg/mL was increased from RT to 50°C, a significant increase in viscosity was observed This behavior was not observed in a toluene solution of poly(Me methacrylate), which showed decreased viscosity at a higher temperature The viscosity increase was accompanied by a decrease in the particle size, and both were attributed to the dissociation of some intramol. hydrogen bonds within the particles, which can increase the number of individual chains in toluene and result in more intermol. interactions.
Macromolecules (Washington, DC, United States) published new progress about Aggregation. 142-90-5 belongs to class esters-buliding-blocks, name is Dodecyl 2-methylacrylate, and the molecular formula is C16H30O2, Formula: C16H30O2.
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