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Sigma-Aldrich

Poly(2-hydroxyethyl methacrylate)

average Mv 300,000, crystalline

Synonym(s):

Poly(2-HEMA), Poly-HEMA

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About This Item

Linear Formula:
(C6H10O3)n
CAS Number:
25249-16-5
MDL number:
MFCD00084374
UNSPSC Code:
12162002
PubChem Substance ID:
24851526
NACRES:
NA.23

form

crystalline

mol wt

average Mv 300,000

density

1.15 g/mL at 25 °C (lit.)

SMILES string

CC(=C)C(=O)OCCO

InChI

1S/C6H10O3/c1-5(2)6(8)9-4-3-7/h7H,1,3-4H2,2H3

InChI key

WOBHKFSMXKNTIM-UHFFFAOYSA-N

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General description

Solid Poly(2-hydroxyethyl methacrylate) (pHEMA) is brittle, while pHEMA hydrogel is a soft material. Glass transition temperature for pHEMA hydrogels is reduced by increasing a content of water in the matrix. Macromolecular properties in pHEMA are characterized by non-covalent interactions of hydrogen-bonds among the polymer chains as well as the hydrated water molecules. The presence of polar groups of hydroxyl and carboxyl on each repeat unit makes this polymer compatible with water. The hydrophobic a-methyl groups of the backbone convey hydrolytic stability to the polymer and enhance mechanical strength of the polymer matrix.

Application

pHEMA scaffolds are used in tissue engineering. It can be used in hydrogels for biomedical applications, as sorbents for metal ions.pHEMA has been used in applications such as soft contact lenses, in drug delivery systems, and in kidney dialysis membranes.Nanoparticles of pHEMA may be employed as a carrier for controlled delivery of anticancer and antitumor drugs.

Physical form

Water-swellable polymer. Hydrogel.

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Fiber templating of poly (2-hydroxyethyl methacrylate) for neural tissue engineering
Flynn L,et al
Biomaterials, 24(23), 4265-4272 null
W E Roorda et al.
Pharmaceutical research, 5(11), 722-725 (1988-11-01)
The freezing and melting behavior of water in poly hydroxy ethyl methacrylate (pHEMA) hydrogels of different cross-linker and water contents was investigated in relation to the glass transition temperature (Tg) of the gels. After prolonged cooling at -15 degrees C
M Rafiqul Islam et al.
Journal of nanoscience and nanotechnology, 13(1), 603-606 (2013-05-08)
Biocompatible magnetic nanocomposites of Fe-AuNPs and poly(2-hydroxylethyl methacrylate) (PHEMA) were employed as a strategic protein immobilization platform. The hybrid magnetic nanocomposites were prepared by applying a 'grafting to' ATRP protocol. Fe-AuNPs having Fe core and Au shell were initially prepared
Narrowly dispersed hydrophilic molecularly imprinted polymer nanoparticles for efficient molecular recognition in real aqueous samples including river water, milk, and bovine serum.
Yue Ma et al.
Angewandte Chemie (International ed. in English), 52(5), 1511-1514 (2012-12-21)
Kazım Köse et al.
Artificial cells, nanomedicine, and biotechnology, 41(1), 13-20 (2012-11-01)
The purpose of this article is to synthesize poly(hydroxyethyl methacrylate-N-methacryloyl-(L)-tryptophan) [mPHEMATrp] magnetic nanoparticles for lysozyme purification from chicken egg white. mPHEMATrp nanoparticles (38 nm in diameter) were synthesized by surfactant-free emulsion polymerization. Specific surface area of the mPHEMATrp nanoparticles was
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