Jhwp filters

Amino benzyl functionalized carbon nanotubes (200 mg) with a loading of amino groups of 250 µmol g⁻¹ were suspended in 200 mL of 1MNaOH (pH 8), and 20 mg of succinic anhydride were added. The suspension was stirred at room temperature for 16 h; it was then filtered on Millipore JHWP filters (0.45 µm) and washed several times with water to neutrality and then with methanol and diethyl ether. The dried powder weighed 205 mg. The powder was characterized by TGA, Kaier test, and TEM.

N-Isopropylacrylamide (NIPAAm), anhydrous N,N-dimethylformamide (DMF), 4,4′-azobis(4-cyanovaleric acid) (CVA), urea, N-BOC-serinol, hexamethylene diisocyanate (HDI), diethyl ether, trifluoroacetic acid (TFA), dichloromethane (DCM), N-(3-(dimethylamino) propyl)-N′-ethylcarbodiimide hydrochloride (EDC-HCl), and l-lysine monohydrochloride were purchased from Sigma-Aldrich, (St. Louis, MO, USA). N-Hydroxysuccinimide (NHS) was purchased from Alfa Aesar (Ward Hill, MA, USA). MWCNTs were purchased from Nanostructured & Amorphous Materials, Inc. (Texas, USA), and all reagents used for the MWCNT functionalization were purchased from Sigma-Aldrich. The filters for MWCNT purification were purchased from Millipore JHWP filters (0.45 µm).