Rapid synthesis of macroporous graphene oxide/poly(acrylic acid-co-acrylamide) nanocomposite hydrogels with pH-sensitive behavior by frontal polymerization
作者： Shengfang Li , Shilin Yan
DOI: 10.1039/C6RA03214A
关键词:
摘要: Macroporous pH-sensitive graphene oxide (GO)/poly(acrylic acid-co-acrylamide) (PAA) nanocomposite hydrogels were prepared by frontal polymerization (FP) using a solvent mixture composed of DMF and small quantity GO water solution as heat conductive medium. A flat can be obtained. The high temperature on the propagating front evaporated to produce many vapor bubbles, which trapped into hydrogel matrix consequently formed macroporous structure (i.e. diameter ca. 120 μm). increase in concentration led an velocity (Vf) highest (Tmax). Fourier transform infrared spectroscopy (FTIR) X-ray diffraction (XRD) indicated that nanosheets crosslinked PAA hydrogel. Scanning electron microscope (SEM) analysis illustrated size pores GO/PAA highly depended solution. had significant influence swelling behaviors hydrogels. compressive strength reach 44.9 MPa.
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