✦ LIBER ✦

The structure of highly crosslinked poly(2-hydroxyethyl methacrylate) hydrogels

✍ Scribed by Peppas, Nikolaos A. ;Moynihan, Humphrey J. ;Lucht, Lucy M.

Publisher: John Wiley and Sons
Year: 1985
Tongue: English
Weight: 793 KB
Volume: 19
Category: Article
ISSN: 0021-9304
DOI: 10.1002/jbm.820190405

No coin nor oath required. For personal study only.

✦ Synopsis

Films were prepared by reaction of HEMA monomer with the crosslinking agent ethyleneglycol dimethacrylate (EGDMA) at crosslinking ratios, X, of 0.005, 0.01, 0.0128, 0.025, and 0.050 mol EGDMA/mol HEMA in the presence of 40 wt. % water at 60°C for 12 h. These membranes were subsequently swollen in water at 37°C and their structure analyzed using a modified Gaussian distribution equation of equil&rium swelling. The calculated values of M, varied between 800 and 3700 daltons, which corresponded to a correlation length of the mesh size tof 16.2 to 35.6 A. The structural analysis and diffusive studies of PHEMA membranes indicate that the recent determinations of M , for PHEMA by Migliaresi et ul.

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