Interactions and Collective Behavior of Attractive Colloidal Rods and Microspheres Grafted with Filamentous Bacteriophage A dissertation presented to the Faculty of the Graduate School of Arts and Sciences of Brandeis University, Waltham, Massachusetts by Fei Huang Interactions and collective behavior are investigated for two systems of attractive colloidal rods and colloidal stars. Attractive ...

Synopsis Gelatin-g-poly(ethy1 acrylate) copolymers were prepared in an aqueous medium, using KzS20~ initiator. The composition of the graft copolymers was dependent upon temperature and duration of the reaction. The number of grafting sites was small and molecular weight of the grafted poly(ethy1 acrylate) branches was high. Three copolymer samples with grafting efficiencies of 33.3% 61.0%, and...

Herein, we give a detailed experimental analysis for scaling law behavior in the "moderately dense" and "high-density" brush regimes for poly(methyl methacrylate) brushes swollen in a range of solvent conditions. This expansive experimental analysis aims to validate decades of mean field theory predictions on power law scaling behavior of grafted polymer chains. Brushes with grafting densities ...

Polymer nanocomposites of core–shell structure were prepared by grafting poly(methyl methacrylate) (PMMA) from TiO2 nanoparticle via the surface-initiated polymerization (SIP) strategy. A bifunctional polymerization initiator inspired by L-3,4-dihydroxyphenylalanine (DOPA), a key constituent of mussel adhesive proteins (MAPs), was designed and synthesized for use in SIP from oxide surfaces. The...

To develop low-cost and environmentally friendly polymeric materials for enrichment, separation, and remediation of metal ions from water, graft copolymers based on cellulose extracted from pine needles were synthesized by grafting of 2-hydroxy methacrylate (HEMA) alone and with comonomers acrylic acid, acrylamide, and acrylonitrile by benzoyl peroxide initiation. The effects of change in conce...

The mechanical properties of polymer nanocomposites are significantly affected by spatial ordering of nanoparticles (NPs) which can be modified under shear flow fields. Polymer-grafted iron oxide NPs form strings, well-dispersed, and percolated anisotropic nanostructures depending on grafting density, and herein their mechanical properties under large oscillatory shear flows are reported. We sh...

Consecutive grafting of crosslinked L-phenylalanine anilide, D-phenylalanine anilide and non-imprinted polymer layers on the surface of wide pore silica resulted in porous composite beads displaying enantiomeric discrimination reflecting the last grafted layer. This no longer holds for beads freed from silica, which instead display enantioselectivity reflecting the first grafted layer.

Mechanical properties of polymer nanocomposites are significantly affected by spatial ordering of nanoparticles (NPs) which can be modified under shear flow fields. Polymer-grafted iron oxide NPs form strings, well-dispersed, and percolated anisotropic nanostructures depending on grafting density, and herein their mechanical properties under large oscillatory shear flows are reported. We show t...

Article info: Received: 23 January 2013 Accepted: 5 February 2013 ABSTRACT One of the major challenges in modern synthetic polymer chemistry is to synthesize end defined polymers of different end functionality with predetermined uniform molecular weight. End functionalized polymers/copolymers basically in block and grafting form are having several potential applications in biomedical areas in t...

Capillary force lithography was applied to generate large area polymer patterns. A "grafting to" approach was used on the patterns to induce linear assembly of Pd nanocubes through electrostatic interaction. Pd nanoarrays with high density were subjected to a hydrogen gas sensing test. We demonstrated a feasible method to build up a miniature hydrogen sensor using self-assembly with micrometre ...