Control of poly(N-isopropylacrylamide) microgel network structure by precipitation polymerization near the lower critical solution temperature

Poly(N-isopropylacrylamide) (pNIPAm) microgels were synthesized by precipitation polymerization at temperatures ranging from 37 to 45 °C using redox initiator system ammonium persulfate (APS)/N,N,N',N'-tetramethylethylenediamine (TEMED) or photoinitiator 2,2'-azobis(amidinopropane) di...

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Veröffentlicht in:Langmuir : the ACS journal of surfaces and colloids. - 1992. - 27(2011), 7 vom: 05. Apr., Seite 4142-8
1. Verfasser: Hu, Xiaobo (VerfasserIn)
Weitere Verfasser: Tong, Zhen, Lyon, L Andrew
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2011
Zugriff auf das übergeordnete Werk:Langmuir : the ACS journal of surfaces and colloids
Schlagworte:Journal Article Research Support, N.I.H., Extramural Research Support, Non-U.S. Gov't Acrylamides Acrylic Resins Ethylenediamines Polymers N,N,N',N'-tetramethylethylenediamine 110-18-9 poly-N-isopropylacrylamide mehr... 25189-55-3 N,N'-(1,2-dihydroxyethylene)bisacrylamide 868-63-3
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500 |a Date Revised 20.10.2021 
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520 |a Poly(N-isopropylacrylamide) (pNIPAm) microgels were synthesized by precipitation polymerization at temperatures ranging from 37 to 45 °C using redox initiator system ammonium persulfate (APS)/N,N,N',N'-tetramethylethylenediamine (TEMED) or photoinitiator 2,2'-azobis(amidinopropane) dihydrochloride (V50). Photon correlation spectroscopy (PCS) and atomic force microscopy (AFM) studies revealed that spherical microgels with narrow size dispersities can be obtained with these methods and that the resultant microgels have volume phase transition behaviors expected from their compositions. Additionally, the low-temperature redox initiator strategy produces microgels devoid of self-cross-linking, thereby permitting the synthesis of completely degradable microgels when using N,N'-(1,2-dihydroxyethylene)bisacrylamide (DHEA) as a cleavable cross-linker. We also demonstrate the potential utility of the approach in bioconjugate syntheses; in this case, avidin immobilization is demonstrated by one-pot copolymerization at low temperature 
650 4 |a Journal Article 
650 4 |a Research Support, N.I.H., Extramural 
650 4 |a Research Support, Non-U.S. Gov't 
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650 7 |a Acrylic Resins  |2 NLM 
650 7 |a Ethylenediamines  |2 NLM 
650 7 |a Polymers  |2 NLM 
650 7 |a N,N,N',N'-tetramethylethylenediamine  |2 NLM 
650 7 |a 110-18-9  |2 NLM 
650 7 |a poly-N-isopropylacrylamide  |2 NLM 
650 7 |a 25189-55-3  |2 NLM 
650 7 |a N,N'-(1,2-dihydroxyethylene)bisacrylamide  |2 NLM 
650 7 |a 868-63-3  |2 NLM 
700 1 |a Tong, Zhen  |e verfasserin  |4 aut 
700 1 |a Lyon, L Andrew  |e verfasserin  |4 aut 
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