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Poly(2-hydroxyethyl methacrylate)

Catalog Number
ACM25249165-3
CAS Number
25249-16-5
Product Name
Poly(2-hydroxyethyl methacrylate)
Structure
Category
Hydrophilic Polymers; Self Assembly and Lithography; Polymers
Synonyms
Poly(2-HEMA),Poly-HEMA
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.
IUPAC Name
2-hydroxyethyl 2-methylprop-2-enoate
Molecular Weight
130.14g/mol
Molecular Formula
(C6H10O3)n
Canonical SMILES
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
Boiling Point
67 °C @ 3.5 mm Hg;250 °C (calculated)
Melting Point
FP: -12 °C
Flash Point
97 °C (closed cup);97 °C c.c.
Density
1.034 @ 25 °C/4 °C;1.07 g/cm3
Solubility
0.77 M;Miscible with water and soluble in common org solvents;Solubility in water: miscible
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.
Storage
room temp
Color/Form
Clear mobile liquid
Complexity
118
Covalently-Bonded Unit Count
1
EC Number
212-782-2;927-388-2
Exact Mass
130.062994g/mol
Form
crystals
Formal Charge
0
Heavy Atom Count
9
ICSC Number
1724
Log P
0.47 (LogP);log Kow= 0.47;0.42
MDL Number
MFCD00084374
MeSH Entry Terms
2-hydroxyethyl methacrylate;glycol methacrylate;HEMA;Historesin;hydroxyethyl methacrylate
Monoisotopic Mass
130.062994g/mol
NSC Number
24180
Other Experimental
Heat of polymerization: 49.8 kJ/mole
Packaging
1, 10 g in glass bottle
Refractive Index
Index of refraction: 1.4515 @ 20 °C/D
Rotatable Bond Count
4
RTECS Number
OZ4725000
Stability
AN INHIBITOR IS USUALLY ADDED TO SOLUTIONS TO PROLONG SHELF LIFE.
Transition Temperature
Tg 84.8 °C
UNII
6E1I4IV47V
Vapor Density
Relative vapor density (air = 1): 4.5
Vapor Pressure
0.13 mmHg;0.126 mm Hg @ 25 °C;Vapor pressure, Pa at 25 °C: 17
Viscosity
8.4 mm2/s at 20 °C
XLogP3
0.5
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