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535311

Sigma-Aldrich

Poly(N-isopropylacrylamide)

Mn ~40,000

Synonym(s):

NIPAM polymer, PNIPAM, Polyacrylamide, polyNIPAM

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About This Item

Linear Formula:
CH3(C6H11NO)nCH3
CAS Number:
MDL number:
UNSPSC Code:
12162002
PubChem Substance ID:
NACRES:
NA.23

mol wt

Mn 20,000-60,000
Mn ~40,000

Quality Level

mp

96 °C

SMILES string

CC(C)NC(=O)C=C

InChI

1S/C6H11NO/c1-3-5-7-6(8)4-2/h4H,2-3,5H2,1H3,(H,7,8)

InChI key

WDFKEEALECCKTJ-UHFFFAOYSA-N

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Application

Thermosensitive polymer, can be used to form a hydrogel. Aqueous polymer solution undergoes a phase transition from a soluble to an insoluble state when the temperature is raised to ca. 32 °C.

Physical form

Thermosensitive polymer, hydrogel

Storage Class

11 - Combustible Solids

wgk_germany

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)


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Matteo D'Este et al.
Carbohydrate polymers, 90(3), 1378-1385 (2012-09-04)
An efficient and scale-up ready single-step synthesis for the conjugation of thermoresponsive polymers to hyaluronic acid (HA) was established. Jeffamines(®) (JFM) and poly(N-isopropylacrylamide) (PNIPAM) were grafted to HA via direct amidation mediated by 1,1'-carbonyldiimidazole activation. The temperature-induced gelation of the
Hydrophobic interaction-mediated capture and release of cancer cells on thermoresponsive nanostructured surfaces.
Hongliang Liu et al.
Advanced materials (Deerfield Beach, Fla.), 25(6), 922-927 (2012-11-20)
Tatiya Trongsatitkul et al.
Colloids and surfaces. B, Biointerfaces, 103, 244-252 (2012-12-04)
The effect of PEGylation on the thermal response and protein adsorption resistance of crosslinked PNIPAm microgels was investigated. It was found that the presence of PEG, its molecular weight (M(n) 300 and 1100 g/mol) and its concentration (10, 20, and
Maria E Nash et al.
Stem cell reviews, 9(2), 148-157 (2013-01-29)
The facile regeneration of undifferentiated human mesenchymal stem cells (hMSCs) from thermoresponsive surfaces facilitates the collection of stem cells avoiding the use of animal derived cell detachment agents commonly used in cell culture. This communication proposes a procedure to fabricate
Avraham Halperin et al.
Langmuir : the ACS journal of surfaces and colloids, 28(48), 16623-16637 (2012-11-06)
Thermoresponsive tissue culture substrates based on PNIPAM brushes are used to harvest confluent cell sheets for tissue engineering. The prospect of clinical use imposes the utilization of culture medium free of bovine serum, thus suggesting conjugation with adhesion peptides containing

Articles

The present publication focuses on synthesis and characterization of nanothick, chemically grafted polymer films (polymer brushes) on various inorganic and polymeric substrates.

Poly(N-isopropylacrylamide), or PNIPAM, is a stimuli-responsive polymer that responds to changes in pH and temperature and has a LCST around 32 C.

Tissue engineering has become a key therapeutic tool in the treatment of damaged or diseased organs and tissues, such as blood vessels and urinary bladders.

By altering the physicochemical properties, smart or intelligent drug delivery systems can be designed to deliver therapeutic molecules on-demand. Learn more about the application of stimuli-responsive materials in drug delivery.

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