Free-radical dispersion polymerization of methyl methacrylate in supercritical carbon dioxide: a parametric analysis with reaction calorimetry
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Reaction calorimetry is an efficient tool used to obtain kinetic, thermodn., and safety data. A new tool, composed of a high-pressure reactor (HP350) coupled with a Mettler-Toledo RC1e reaction calorimeter, is developed for the investigation of chem. react ...
The influence of the surface morphology of semi-crystalline poly(ethylene terephthalate) (PET) and polyamide 12 (PA12) films on the adhesion and cohesion of thin oxide coatings is analysed, with attention paid to the role of spherulites and processing addi ...
Efficient stirring is needed to realize heat flow anal. with a thermally homogeneous medium. Because dispersion polymn. with supercrit. fluids can be destabilized under stirring, a preliminary target has been to find a compromise between synthesis and basi ...
Two novel tetra- and hexahydroxy functionalized perylene chromophores have been used as initiators for the Sn(oct)2 catalyzed ring-opening polymerization of different lactones. The arms of the resulting star polymers were comprised of either crystallizable ...
Calorimetry (adiabatic, isothermal, differential, oscillating or acoustic) is generally based on heat-flow measurements of the studied system. Most of its applications are dedicated to kinetic-parameter detn., safety studies and process optimization, phase ...
L'émergence de procédés de gravure profonde performants (vitesse, anisotropie, uniformité…) de matériaux tels que le silicium (Si), la silice (SiO2) et certains polymères repose sur: • Le développement d'équipement de gravure permettant le contrôle indépen ...
A new rod-like coordination polymer consisting of {Ru(terpy)2} (terpy = 2,2':6',6''-terpyridine) motifs bridged by bithiophene units was prepd. by electrochem. polymn. in acidic org. medium. ...
This paper describes the synthesis of two novel tetra 2-bromoisobutyric acid-substituted perylene fluorophores and their use as initiators for the atom transfer radical polymerization of styrene. Different star-shaped polystyrenes covering a wide range of ...
A linear water-soluble quaternary ammonium polymer having a homopolymeric chain of repeating unit of general formula (I):where each of R1 and R2 independently represents a member selected from the group consisting of linear or branched alkyl, hydroxyalkyl, ...
Inline conversion measurements in chem. reactions are in general and esp. in polymn. reactions necessary for process monitoring and control. For polymn. monitoring, the sound propagation (UPV) can be related to the texture of the bulk with a high accuracy. ...
