Critical adsorption of an end-grafted diblock copolymer on a flat surface

Amphiphilic Diblock Copolymer Surface

10 11 Both visible and infrared (IR) spectroscopic ellipsometry have been employed to study the 12 structure of thin layers of bovine submaxillary mucin (BSM) adsorbed on poly(acrylic acid13 block-methyl methacrylate) (PAA-b-PMMA) copolymer and poly(methyl methacrylate) 14 surfaces at three pH values (3, 7 and 10). The adsorbed mucin layer on the copolymer surface 15 had the greatest thickness ...

Evolution in off-critical diblock copolymer melts

We study the evolution of diblock copolymer melts in which one component has small volume fraction. In this case one observes phase morphologies which consist of small spheres of the minority component embedded in the other component. Based on the Ohta-Kawasaki free energy one can set up an evolution equation which has the interpretation of a gradient flow. We restrict this gradient flow to mor...

Configuration of a polymer grafted on a solid surface with specific adsorption of the free end

Adsorption of Multi-block and Random Copolymer on a Solid Surface: Critical Behavior and Phase Diagram

The adsorption of a single multi-block AB-copolymer on a solid planar substrate is investigated by means of computer simulations and scaling analysis. It is shown that the problem can be mapped onto an effective homopolymer adsorption problem. In particular we discuss how the critical adsorption energy and the fraction of adsorbed monomers depend on the block length M of sticking monomers A, an...

Collapse and Swelling of Poly(N-isopropylacrylamide- co-sodium acrylate) Copolymer Brushes Grafted on a Flat SiO2 Surface

Poly(N-isopropylacrylamide-co-sodium acrylate) copolymer brushes grafted on SiO2-coated quartz crystal surface were prepared with a surface-immobilized initiator. The collapse and swelling of the thermally sensitive copolymer brushes in water were studied with quartz crystal microbalance in situ. The frequency and dissipation changes with the temperature increasing in the range 20–38 8C indicat...