Organic–inorganic hybrid materials have attracted much interest because of their novel and specific characteristics. One method to obtain these materials is in situ polymerization through free-radical polymerization. In this study, styrene monomers were covalently linked to silica (SiO2) using the suspension polymerization technique. In the reaction process, benzoyl peroxide was used as an init...

As a peculiar and powerful energy source, microwave has been widely applied to optimize and accelerate the chemical reaction. As an alternative to conventional heating techniques, microwave irradiation provides an effective, selective and fast synthetic method by heating the molecules directly through the interaction between the microwave energy and molecular dipole moments of the monomers. Thi...

Polymer brushes with single-walled carbon nanotubes (SWNT) as backbones were synthesized by grafting n-butyl methacrylate (nBMA) from the ends and sidewalls of SWNT via atom transfer radical polymerization (ATRP). Carboxylic acid groups on SWNT were formed by nitric acid oxidation. The ATRP initiators were covalently attached to the SWNT by esterification of 2-hydroxyethyl 2'-bromopropionate wi...

A native potato starch was modififi ed with vinyl acetate by graft polymerization in alkaline medium pH 10 the mode of temperature change from 70 to 80°C for 4 hours. The initiator process ammonium persulfate (NH ) 2 S O 8 . conversion 91,5%. chemical structure copolymer (Starch:Vinyl acetate) confifi rmed IR-spectroscopy. Composite materials and triethyl citrate tensile strength 24 MPa were ob...

Supramolecular polymers are a class of materials characterized by a repetition of monomer units held together by non-covalent forces such as metal coordination, π–π interactions and hydrogen bonding1–4. Compared with their covalent counterparts the unique properties of these polymers have attracted considerable attention, for instance, the self-healing ability that arises from the thermodynamic...

INTRODUCTION Polymer/clay nanocomposites, in which nanosized silicate plates of clay are uniformly dispersed in the polymer matrix, provide enhanced mechanical and thermal properties compared to conventional composites. Not all polymer and clay combinations will form nanocomposites: the compatibility and interfacial properties between polymer matrix and clay layers significantly influence the e...

We prepared polysilane–methacrylate copolymers using polysilane as the photoradical initiator. As polymerization is a radical reaction, chemical structures of arrangement block and methacrylate have not yet been clarified various analytical methods. In this study, polysilane–(1-pyrene)methyl were to examine their structure by photoluminescence measurements because pyrene units exhibit fluoresce...

Aqueous emulsion acrylic adhesive was prepared by batch polymerization With 2-ethylhexyl acrylate (2-EHA) and butyl (BA) as soft monomers, methyl methacrylate (MMA) hard monomer, acid (AA), amide (AM) hydroxyethyl (HEA) hydrophilic functional dodecanethiol (NDM) molecular weight regulator, Sodium dodecyl benzene sulfonate (SDBS) octyl phenol polyoxyethylene ether (op-10) mixed emulsifiers, ammo...

In this work, we report an unusually concise immobilization of Cinchona organocatalysts using thiol-ene chemistry, in which catalyst immobilization and bead polymerization is combined in a single step. A solution of azo initiator, polyfunctional thiol, polyfunctional alkene and an unmodified Cinchona-derived organocatalyst in a solvent is suspended in water and copolymerized on heating by thiol...

The copolymers of iV-vinylcarbazole/vinyl acetate (V/A) of different compositions were prepared by solution polymerization using AIBN as an initiator. The copolymer composition was determined from quantitative "Cf'H} NMR spectroscopy. Reactivity ratios for the comonomers were calculated using the Kelen-Tudos (KT) and non-linear error in variable (EVM) methods. Two-dimensional heteronuclear sing...