Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Effect of Block Thickness on Solvent Response of Block Copolymer Brushes: A Combinatorial Study With Block Copolymer Brush Gradients

Published

Author(s)

Chang Xu, Tao Wu, Charles M. Drain, J Batteas, Michael J. Fasolka, Kathryn L. Beers

Abstract

Block copolymer (BC) brush gradient libraries were explored as high-throughput platforms to study the effect of relative block thickness on the BC response to solvent. BC brushes of n-butyl methacrylate (BMA) and 2-(N,N-dimethylamino)ethyl methacrylate (DMAEMA) were synthesized via surface-initiated atom transfer radical polymerization (ATRP). The gradient libraries synthesized have uniform bottom BMA blocks and molecular mass gradient top blocks. The rearrangement of the BC brushes upon exposure to water and hexane was assessed by water contact angle (WCA) measurements. It is found that the solvent response behavior of the BC brushes is greatly influenced by their individual block thickness. While surface response properties can be suppressed by the extension of top block thickness, they are also enhanced by the increased bottom block thickness. In addition, our work suggests that BC brushes could be fabricated to provide tuneable surfaces with gradient responsive properties.
Citation
Macromolecules
Volume
39 No 9

Keywords

&, (3-octylthiophene), (NEXAFS), (PSA), (SANS), (SiOC), (US), (multivariant), (stars, ultra-thin, viscosity, ., 11, 12, 157, 2-D, 2-hydroxyethyl, 2888, 3-point, 4-roll, ?-hydroxymethylacrylate, AC, AFM, AFM, ANOVA, ATRP, Absorption, Absorption, Acid, Adhesion, Adhesive, Adhesive, Adhesives, Adhesives, Advanced, Amorphous, Amplified, Analysis, Angle, Anisotropy, Apatite, Apoptosis, Apparatus, Applications, Approach, Au, BARC, BaTiO3, BaTiO3, Backscattering, Barium, Beta-Relaxation, Bio-Preservation, Biological, Biomaterials, Biomaterials, Biopolymers, Biopolymers, Bis-GMA, Blend, Blends, Blends, Boltzmann, Bond, Bonding, Break-down, Breakup, Brillouin, Brownian, Buckling, Buckling, Building-Blocks, C, C.C., CTE, CVD, Calculus, Capacitance, Capsid, Capsids, Carbon, Cascade, CdS, Cement, Cements, Chemical, Chemically, Chemistry, Clay, Cluster, Clustering, Coating, Coaxial, Coefficient, Colloidosome, Combinatorial, Combinatorial, Comparison, Complex, Composites, Composites, Concentration, Condensed, Conductivity, Confocal, Constrained, Contact, Continuous, Convergent-Growth, Cooperative, Copolymers, Couette, Coupling, Critical, Crystalline, Crystallization, Crystallization, Cytokines, DC, DET, DETA, DMTA, DSC, DSC, Damage, Dean, Debye-Waller, Decomposition, Deformation, Delamination, Delamination, Demineralization, Demixing, Dendrimer, Dendrimers, Dendrimers, Dental, Dentin, Determination, Diagram, Dielectric, Dielectric, Dielectric-Relaxation, Dielectrics, Diffusion, Diffusion, Dilute, Dilute-Solution, Dipolar, Dipole, Directed, Dispersion, Distribution, Domain, Droplet, Durability, Durability, Dynamic, Dynamics, Dynamics, ESI, Edge, Effect, Effects, Electron, Electronic, Electronics, Emulsion, Engineering, Epoxy, Epoxy-Resins, Equations, Equilibrium, Equivalence, Exfoliated, Experimentation, Expression, Extension, FIlms, FIlms, FT-IR, FTIR, Fatigue, Fiber, Fibers, Field, Filled, Filler, Film, Films, Films, First, Floc, Floculation, Flory-Huggins, Flow, Flow, Fluids, Fluorescence, Fomulations, Forces, Formation, Formulations, Fractional, Fracture, Fragility, Ftir, Functional, Functionality, G., Gelation, Ge

Citation

Xu, C. , Wu, T. , Drain, C. , Batteas, J. , Fasolka, M. and Beers, K. (2006), Effect of Block Thickness on Solvent Response of Block Copolymer Brushes: A Combinatorial Study With Block Copolymer Brush Gradients, Macromolecules, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=852503 (Accessed April 21, 2024)
Created March 1, 2006, Updated February 19, 2017