01429nam a2200265Ia 4500 MX-MdCICY 20260521091041.0 CICY B-7443 Barrier films made with various lamellar block copolymers Journal of Membrane Science, 270(1-2), p.13-21, 2006 The permeabilities of helium, nitrogen, and oxygen across lamellar block copolymers can be accurately estimated from the properties of the glassy and rubbery blocks. The copolymers tested include poly(styrene-b-isoprene-b-styrene), poly(styrene-b-butadience-b-styrene), and poly(lactide-b-isoprene-b-lactide). The results show improvements in barrier properties that tend to be larger than those expected from the resistances of lamellae in series. These increases are not as large as those achieved with impermeable fillers like mica and clay. The changes in film elastic modulus caused by glassy lamellae are also discussed. BARRIERS BLOCK COPOLYMERS DIFFUSION LAMELLAE Wang, J. Derocher, J.P. Wu, L. Bates, F.S. Cussler, E.L. https://drive.google.com/file/d/1e3EodEkT4fRu9w8DKUq9mLKQXjguArrb/view?usp=drivesdk Para ver el documento ingresa a Google con tu cuenta: @cicy.edu.mx Loc REF1 250602s9999 xx |||||s2 |||| ||und|d 17712 17712 0 0 Loc 0 0 F1 CICY CICY RE 2025-06-25 0 B-7443 2025-06-25 12:47:01 2025-06-25 REF1