𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Physical characterization of microporous poly(2-hydroxyethyl methacrylate) gels

✍ Scribed by Migliaresi, C. ;Nicodemo, L. ;Nicolais, L. ;Passerini, P.


Publisher
John Wiley and Sons
Year
1981
Tongue
English
Weight
479 KB
Volume
15
Category
Article
ISSN
0021-9304

No coin nor oath required. For personal study only.

✦ Synopsis


Abstract

Poly(2‐hydroxyethyl methacrylate)‐(PHEMA) has been prepared by polymerizing in presence of different types of water‐soluble additives, at various amounts, which were removed by swelling in water. Mechanical properties of swollen samples have been measured and analyzed by using the classical theory of rubber elasticity. Water permeability measurements were also performed to detect the presence of micropores and to determine the type of water transport. It has been shown that it's possible, using different types and amounts of additives, to obtain a wide range of physical properties of swollen PHEMA as required for various biomedical applications.


πŸ“œ SIMILAR VOLUMES


Ultrasonic characterization of water sor
✍ A. Maffezzoli; A.M. Luprano; G. Montagna; L. Nicolais πŸ“‚ Article πŸ“… 1998 πŸ› John Wiley and Sons 🌐 English βš– 182 KB πŸ‘ 2 views

A complex mechanism characterizes the water uptake kinetics in hydrogels, as a consequence of the strong structural changes occurring in the material during the sorption process. The water sorption involves the transformation of a glassy, moderately crosslinked polymer in a rubbery material. In this

Characterization and analysis of osteopo
✍ Martin, Stephanie M. ;Ganapathy, Ramesh ;Kim, Tae K. ;Leach-Scampavia, Deborah ; πŸ“‚ Article πŸ“… 2003 πŸ› John Wiley and Sons 🌐 English βš– 257 KB

## Abstract A wide array of technologies exist for the characterization and quantification of molecules present at surfaces. We have used several of these experimental and instrumental techniques for the analysis of a novel biomaterial surface. Osteopontin, an extracellular matrix molecule involved

Intraocular biocompatibility of hydroxye
✍ Smetana, K. ;Ε ulc, J. ;KrčovΓ‘, Z. ;PitrovΓ‘, Ε . πŸ“‚ Article πŸ“… 1987 πŸ› John Wiley and Sons 🌐 English βš– 455 KB

A strip of partially hydrolyzed poly (2-hydroxyethyl methacrylate) containing 65%-75% H 2 0 was implanted intv the antenor eye chamber of 11 Chinchilla rabbits. No pathological changes were found in the iris or in the ciliary body. The pathological findings in the cornea accompanying implantation of

Wettability of hydrogels I. Poly(2-hydro
✍ Holly, Frank J. ;Refojo, Miguel F. πŸ“‚ Article πŸ“… 1975 πŸ› John Wiley and Sons 🌐 English βš– 483 KB

## Abstract The wettability characteristics of the contact lens material, PHEMA, with respect to water have been determined by using the sessile drop, and the captive air bubble techniques of contact angle goniometry. It is concluded that on PHEMA gels water does not spread spontaneously. Large hys

Synthesis, physical characterization, an
✍ Lou, Xia ;Vijayasekaran, Sarojini ;Chirila, Traian V. ;Maley, Moira A. L. ;Hicks πŸ“‚ Article πŸ“… 1999 πŸ› John Wiley and Sons 🌐 English βš– 429 KB πŸ‘ 2 views

A limitation in the use of hydrophilic poly(2hydroxyethyl methacrylate) (PHEMA) sponges as implantable devices is their inherently poor mechanical strength. This precludes proper surgical manipulation, especially in the eye where the size of the implant is usually small. In this study a new method w