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. 2001 Mar 27;98(8):4323–4327. doi: 10.1073/pnas.071615398

Figure 1.

Figure 1

Variations in the molar fraction f of PEG present in copolymers of DTE and PEG make it possible to modulate the adhesivity of the polymer surface to cells by changing the amount and conformation of serum proteins adsorbed onto the polymer surface. Molecular weight of PEG: 1,000 g/mole; molecular weight of the copolymers varied from about 70,000 to 100,000 g/mole. With increasing f, the copolymer surface becomes more hydrophilic, as indicated by a decrease in the air-water contact angle (2).