Year-end Sale % OFF 
Abstract
Well-defined homo glycopolymer/montmorillonite (MMT) nanocomposite (gly1) was prepared successfully by the “grafting from” technique from the modified surface of MMT via surface initiated atom transfer radical polymerization (SI-ATRP) of 3-O-methacryloyl-1,2:5,6-di-O-isopropylidene-α-D-glucofuranose (gly) in the presence of Cu(I)Br/ bi- pyridyl at 90?C in xylene. Well-defined diblock copolymers (gly2, gly3, gly4 and gly5) were also synthesized via the same technique by using comonomers of methylmethacrylate (MMA) or styrene (St) with glycomonomer (gly) using the same catalytic system. The formed nanocomposites showed both intercalated and exfoliated structures, as judged by XRD and TEM measurements. Further analyses were performed on such nanocomposites to confirm their formation such as TGA and DSC. The structures of the attached polymers to MMT were characterized by 1H NMR.
Highlights
In the recent decades, polymer/clay nanocomposites have attracted much attention as advanced polymeric materials on scientific level as well as in industry
The macroinitiator consisted of reactive bromoisobutyrate groups capable of synthesizing homo and block glycopolymers/montmorillonite clay (MMT) nanocomposites by “graft from” technique using surface initiated atom transfer radical polymerization (SI-ATRP) (Scheme 1)
The organic modification of clay was accomplished by cationic exchanging of bis-hydroxypropyl ammonium chloride (BHPAC) with the Na+ ion on the clay surface
Summary
Polymer/clay nanocomposites have attracted much attention as advanced polymeric materials on scientific level as well as in industry. The most easy and successful one in producing well defined polymer with controlled polydispersities and predetermined molecular weight is the surface-initiated atom transfer radical polymerization technique (SI-ATRP) [7]. This approach allows the synthesis of uniform polymer layers of high grafting density, with tunable thicknesses via molecular weight control on surface. Surface-initiated atom transfer radical polymerization (SI-ATRP) has been demonstrated as a useful tool for modification of different substrates such as silica, montmorillonite clay (MMT), gold surface, polymer films, silicon wafers, metal/metal oxide, paper or glass, latexes and carbon nanotubes (CNTs) affording various polymer brushes with desired structures, properties, morphologies and functions with high applicable values [7,8].
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
