Static swelling experiments

In a similar approach Riihe et al. [279] reported the preparation ofpoly(2-oxazoline) brushes by the grafting onto as well as grafting from method. For LCSIP of 2-ethyl-2-oxazolines silane functionalized undecane tosylate was first prepared and then immobilized on the substrate surface. SIP resulted in PEOx layers with thickness close to 30 nm. PEOx brushes were prepared by chemisorption of PEOx disulfides onto gold substrates. Preliminary static and dynamic swelling experiments are reported for these brushes. However, later observations [243] contradicted these findings. 

Figure 6.31. Specific volume of polycarbonate (GoodfeUow, UK) swelling due to the sorption of methane (CH4, 5.5) at T = 308 K for pressures up to 4 MPa and static dielectric permittivity (8,) of the (methane loaded) polymer [52, 6.3]. The volume has been determined by combined osciUometiic-gravimetric measurements, cp. Chap. 5. Figures 6.30, 6.31 refer to the same set of combined oscillometric-gravimetric-dielectric experiments [6.3, 6.41].

---