901422
Poly(N-isopropylacrylamide)
average Mn 85,000
Sinonimo/i:
NIPAM polymer, PNIPAM, PolyNIPAM, Polyacrylamide, polyNIPAM
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About This Item
Formula condensata:
CH3(C6H11NO)nCH3
Numero CAS:
Numero MDL:
Codice UNSPSC:
12162002
NACRES:
NA.23
Prodotti consigliati
Forma fisica
crystals
PM
Mn 60,000-110,000 Da by MALLS (GPC)
average Mn 85,000
Colore
white to off-white
Punto di fusione
96 °C
Temperatura di conservazione
2-8°C
Stringa SMILE
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)
WDFKEEALECCKTJ-UHFFFAOYSA-N
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Descrizione generale
Poly(N-isopropylacrylamide) (PNIPAM) is a temperature-responsive polymer used in biomedical research applications. PNIPAM undergoes a reversible, lower critical solution temperature (LCST) phase transition when heated above 32 °C, transitioning from a soluble to an insoluble material. PNIPAM is also frequently crosslinked to yield hydrogels with reversible, thermal shrinking and swelling. Poly(N-isopropylacrylamide) is also readily functionalized and has been used as the hydrophilic block in the synthesis of thermoresponsive, amphiphilic block copolymers. Due to the similarity in temperature between the LCST of PNIPAM and the temperature of the human body, PNIPAM materials have been frequently utilized in tissue engineering and controlled drug delivery research applications.
Poly(N-isopropylacrylamide) (PNIPAM) is a thermo-sensitive polymer with a low critical solution temperature (LCST). It exhibits both hydrophobic and hydrophilic characteristics below and above the LCST. It forms microgels, typically by free-radical precipitation polymerization.
Applicazioni
PNIPAM can be used in the formation of a smart hydrogel, which finds potential usage in sensors, fuel cells, supercapacitors, and lithium-ion batteries. It can also be used in the fabrication of molecular nanothermometer. PNIPAM is coated with gold nanoparticles (AuNPs) to form microgels that facilitate highly reproducible signals for surface-enhanced Raman scattering (SERS).
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.
Codice della classe di stoccaggio
11 - Combustible Solids
Classe di pericolosità dell'acqua (WGK)
WGK 1
Punto d’infiammabilità (°F)
Not applicable
Punto d’infiammabilità (°C)
Not applicable
Certificati d'analisi (COA)
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I clienti hanno visto anche
Au@ pNIPAM colloids as molecular traps for surface-enhanced, spectroscopic, ultra-sensitive analysis
Alvarez-Puebla RA, et al.
Angewandte Chemie (International ed. in English), 48(1), 138-143 (2009)
S Panja et al.
ACS applied materials & interfaces, 8(19), 12063-12074 (2016-04-30)
The design of nanomedicines from the tuned architecture polymer is a leading object of immense research in recent years. Here, smart thermoresponsive micelles were prepared from novel architecture four-arm star block copolymers, namely, pentaerythritol polycaprolactone-b-poly(N-isopropylacrylamide) and pentaerythritol polycaprolactone-b-poly(N-vinylcaprolactam). The polymers
Synthesis of hyperbranched polyglycidol-b-poly(N-isopropylacrylamide) using nitroxide-mediated polymerization for thermo-sensitive drug delivery system.
Min Seon Heo et al.
Journal of controlled release : official journal of the Controlled Release Society, 213, e80-e80 (2016-03-24)
Muhammad Abdul Haq et al.
Materials science & engineering. C, Materials for biological applications, 70(Pt 1), 842-855 (2016-10-25)
Materials which adjust their properties in response to environmental factors such as temperature, pH and ionic strength are rapidly evolving and known as smart materials. Hydrogels formed by smart polymers have various applications. Among the smart polymers, thermoresponsive polymer poly(N-isopropylacrylamide)(PNIPAM)
Nanorod-coated PNIPAM microgels: thermoresponsive optical properties
Karg M, et al.
Small, 3(7), 1222-1229 (2007)
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