Evaluation of the efficiency of sludge lignin plasma disposal process

This article shows the review and analysis of literature on methods of sludge lignin utilization. It is the product obtained after processing of cellulose. As a result of the calculations the optimal compositions of water, organic materials with mechanical impurities with adiabatic combustion temperature of about 1200 K were determined. With the help of obtained results experimental studies were carried out in a plasma catalytic reactor and the reactor operation was optimized. The results can be used to build industrial plants on the basis of plasma catalytic reactors for utilization of sludge lignin

Synthesis and Ring-Opening Metathesis Polymerization of Second-Generation Dendronized Poly(ether) Monomers Initiated by Ruthenium Carbenes

The Ring-Opening Metathesis Polymerization (ROMP) of second-generation dendronized monomers is described. Using the highly active and fast-initiating third-generation ruthenium complex [(H_2IMes)(pyr)_2Cl_2RuCHPh], moderate to high molecular weight polymers (430-2230 kDa) are efficiently synthesized with low dispersities (Ð = 1.01-1.17). This study highlights the power of the metathesis approach toward polymer synthesis in a context where monomer structure can significantly impede polymerization

Synthesis and Ring-Opening Metathesis Polymerization of Second-Generation Dendronized Poly(ether) Monomers Initiated by Ruthenium Carbenes

The Ring-Opening Metathesis Polymerization (ROMP) of second-generation dendronized monomers is described. Using the highly active and fast-initiating third-generation ruthenium complex [(H_2IMes)(pyr)_2Cl_2RuCHPh], moderate to high molecular weight polymers (430-2230 kDa) are efficiently synthesized with low dispersities (Ð = 1.01-1.17). This study highlights the power of the metathesis approach toward polymer synthesis in a context where monomer structure can significantly impede polymerization

Thermomechanical Behavior and Local Dynamics of Dendronized Block Copolymers and Constituent Homopolymers

We employ Brillouin light scattering (BLS) and dielectic spectroscopy (DS) to study the phononic behavior, thermomechanical properties, and segmental dynamics of symmetric block copolymers (BCP) constructed from discrete wedge-type repeat units and the corresponding dendronized constituent homopolymers over a broad temperature range. In spite of the sufficiently large elastic contrast between the bulk homopolymers, for the BCPs an absence of a bandgap in the phonon dispersion relation along the periodicity direction implies different modified sound velocities in the photonic BCP lamellar films. The anticipated rich segmental dynamics reveal interfacial mixing as well as confinement effects of the two blocks. This class of amorphous dendronized homopolymers and BCPs reveal strong effects of the wedge-like side groups manifested in the vastly different glass transition temperatures (T_g), free-volume domination of the temperature dependence of the elastic modulus, and heterogeneous segmental dynamics represented by four relaxation processes