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724459

Sigma-Aldrich

Poly(N-isopropylacrylamide), carboxylic acid terminated

average Mn 10,000

Synonym(s):

NIPAM polymer, PNIPAM-COOH, Polyacrylamide, functionalized polyNIPAM, functionalized polyacrylamide, polyNIPAM

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About This Item

Linear Formula:
(C6H11NO)nSCH2CH2CO2H
UNSPSC Code:
12162002
NACRES:
NA.23

form

powder

Quality Level

mol wt

average Mn 10,000 by GPC (THF w/ 5%TEA, PS, RI)
average Mn 10,000

mp

>300 °C

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Application

Novel polymer for development of thermosensitive coated micro/nano materials including thermoresponsive polymeric drug delivery systems. The carboxylic acid functional group can be used to conjugate a variety of biomolecules to the polymer chain.

Storage Class Code

11 - Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


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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
Shahrzad Rayatpisheh et al.
Macromolecular bioscience, 12(7), 937-945 (2012-04-27)
A new method for ultrathin grafting of pNIPAm on PDMS surfaces is introduced that employs plasma activation of the surface followed by thermal polymerization. This method is optimized for human primary SMC attachment and subsequent intact cell sheet detachment by
A C C Rotzetter et al.
Advanced materials (Deerfield Beach, Fla.), 24(39), 5352-5356 (2012-08-31)
Buildings can be effectively cooled by a bioinspired sweating-like action based on thermoresponsive hydrogels (PNIPAM), which press out their stored water when exceeding the lower critical solution temperature. The surface temperature is reduced by 15 °C compared to that of
Umut Atakan Gurkan et al.
Advanced healthcare materials, 1(5), 661-668 (2012-11-28)
Stimuli responsive, smart interface materials are integrated with microfluidic technologies creating new functions for a broad range of biological and clinical applications by controlling the material and cell interactions. Local capture and on-demand local release of cells are demonstrated with
G Chen et al.
Nature, 373(6509), 49-52 (1995-01-05)
There are many potential applications of 'intelligent' aqueous polymer systems in medicine, biotechnology, industry and in environmental problems. Many of these polymer systems undergo reversible phase transitions--for example, abrupt changes in volume--in response to external stimuli such as temperature, pH

Articles

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.

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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