title: Amphiphilic networks. X. Diffusion of glucose and insulin (and nondiffusion of albumin) through amphiphilic membranes.
abstract: Select semipermeable amphiphilic membranes have been prepared and their diffusional characteristics for glucose, insulin, and albumin investigated. The membranes were prepared by cast copolymerization of a hydrophilic monomer (i.e., N,N-dimethyl acrylamide, or N,N-dimethylaminoethyl methacrylate) with the hydrophobic crosslinker methacrylate-ditelechelic polyisobutylene. The products have sufficient mechanical properties for the fabrication of swollen membranes, sheets, tubes, etc. Membranes have been identified which allowed the rapid simultaneous countercurrent diffusion of glucose (Mn = 180 Da) and insulin (Mn = 5733 Da) but did not allow albumin (Mn approximately 60,000 Da) to pass. Evidently, the effective molecular weight cutoff point of these membranes is in the 6-60-KDa range.
authors.affiliation: Maurice Morton Institute of Polymer Science, The University of Akron, Ohio 44325-3909, USA.
authors.forename: S
authors.initials: S
authors.lastname: Shamlou
authors.forename: J P
authors.initials: JP
authors.lastname: Kennedy
authors.forename: R P
authors.initials: RP
authors.lastname: Levy
mesh_terms: D000418:Albumins / Q000737:chemistry*; D003377:Countercurrent Distribution; D003432:Cross-Linking Reagents; D004058:Diffusion; D005947:Glucose / Q000737:chemistry*; D007328:Insulin / Q000737:chemistry*; D007700:Kinetics; D008567:Membranes, Artificial; D008689:Methacrylates / Q000737:chemistry; D008970:Molecular Weight; D010539:Permeability; D011090:Polyenes / Q000737:chemistry
chemical_list: D000418:Albumins; D003432:Cross-Linking Reagents; D007328:Insulin; D008567:Membranes, Artificial; D008689:Methacrylates; D011090:Polyenes; D005947:Glucose