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Polyhydroxyethylmethacrylate
Chemical compound / From Wikipedia, the free encyclopedia
"PHEMA" redirects here. For the Greek goddess, see Pheme.
Poly(2-hydroxyethyl methacrylate) (pHEMA) is a polymer that forms a hydrogel in water. Poly (hydroxyethyl methacrylate) (PHEMA) hydrogel for intraocular lens (IOL) materials was synthesized by solution polymerization using 2-hydroxyethyl methacrylate (HEMA) as raw material, ammonium persulfate and sodium pyrosulfite (APS/SMBS) as catalyst, and triethyleneglycol dimethacrylate (TEGDMA) as cross-linking additive. It was invented by Drahoslav Lim and Otto Wichterle for biological use.[1] Together they succeeded in preparing a cross-linking gel which absorbed up to 40% of water, exhibited suitable mechanical properties and was transparent. They patented this material in 1953.
Quick Facts Names, Identifiers ...
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Names | |
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IUPAC name
Poly(2-hydroxyethyl methacrylate) | |
Other names
PHEMA, poly-HEMA, Hydron | |
Identifiers | |
ChemSpider |
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PubChem CID |
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CompTox Dashboard (EPA) |
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Properties | |
(C6H10O3)n | |
Molar mass | Variable |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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