Measurement of the interaction force profiles between block copolymers of poly(2-vinylpyridine)/poly(t-butylstyrene) in a good solvent

Theory of the structure of adsorbed block copolymers: Detailed comparison with experiment

“…͑1.4͒ and similar to the Ansarifar and Luckham result. 8 Similarly, although Murat and Grest [20][21][22] pointed out that their MD simulations were in reasonable agreement with a scaling of Z 1/3 , we have found that the best fits to their published data 21 give weaker molecular weight dependences, especially if we use only those points falling within the range of coverage obtained in the majority of experiments. For the good solvent case at one temperature ͑Tϭ4 in their units͒, fitting to the six points in the range 3.5Շ*Շ20 gives ͗h͘ϰZ 0.90 0.36 for the average brush thickness.…”

ACTIBIND, an actin‐binding fungal T2‐RNase with antiangiogenic and anticarcinogenic characteristics

“…Experimentally, end anchored polymers can be realized by “grafting to” or “grafting from” methods with each method presenting its own advantages and disadvantages 2, 51, 52. Force distance profiles, height of the layer and segment density profiles have been studied via the surface force apparatus,53–57 small angle neutron scattering58, 59 and neutron reflectivity,60–63 whereas evanescent wave dynamic light scattering was utilized to study their dynamics 64. Most of these experiments were limited to the range σ* ≤ 15 under good solvent conditions.…”

Interaction forces between polyethylene oxide–polypropylene oxide ABA copolymers adsorbed to hydrophobic surfaces

“…The interactions between polymer bearing surfaces have been studied extensively over the last twenty years [1][2][3][4][5][6][7][8][9][10][11][12]. Initially, homopolymers were investigated [1][2][3][4] and then block or graft copolymers [5][6][7][8].…”

“…Initially, homopolymers were investigated [1][2][3][4] and then block or graft copolymers [5][6][7][8]. Until the mid 1990s, the mica surface force apparatus, SFA, was used for these studies but more recently a modified form of atomic microscopy, AFM, has been the preferred method [9][10][11][12].The reason for the dominance of the AFM method in recent years is two fold; firstly the technique, although not easy, is considerably simpler than the SFA, and secondly one is not limited to mica as a substrate (mica is transparent to visible light and can be cleaved to produce surfaces which are molecularly smooth over large areas), so by using AFM a whole variety of surfaces becomes available such that it is simpler to relate the results obtained to experiments performed on polymers attached to particles in a colloidal dispersion.…”