纳米硅/聚丙烯酰胺水凝胶的制备及性能研究

Preparation and properties of F-SiNPs/PAM hydrogel

通过光催化方法制备了纳米硅(F-SiNPs),再以丙烯酰胺(AM)为单体、过硫酸铵为引发剂、N,N-亚甲基双丙烯酰胺为交联剂,采用原位聚合法在纳米硅水溶液中制备了F-SiNPs/聚丙烯酰胺(F-SiNPs/PAM)复合水凝胶,并采用激光粒度分析仪(DLS)、场发射透射电子显微镜(FE-TEM)、红外光谱(FT-IR)、X射线光电子能谱(XPS)、场发射扫描电子显微镜(SEM)、紫外荧光光谱(UV-PL)等手段对复合水凝胶的结构与性能进行表征。结果表明,成功地制备了F-SiNPs/PAM复合水凝胶,且F-SiNPs/PAM复合水凝胶同时具有荧光特性与pH敏感性。

Amino-fluorescent nanosilicon was synthesized via photocatalytic method.Then,nano-silicon/polyacrylamide(F-SiNPs/PAM)composite hydrogels were prepared in aqueous solution of nano-silica through in-situ polymerization with acrylamide as monomer,ammonium persulfate as initiator and N,N-methylenebisacrylamide as crosslinking agent.The structure and properties of F-SiNPs/PAM composite hydrogels were characterized by means of laser particle size analyzer(DLS),field emission transmission electron microscopy(FE-TEM),infrared spectroscopy(FT-IR),X-ray photoelectron spectroscopy(XPS),field emission scanning electron microscopy(SEM),ultraviolet fluorescence spectrum(UV-PL).The results showed that the nano-silica particles and F-SiNPs/PAM composite hydrogels have been successfully prepared,and the F-SiNPs/PAM composite hydrogels have both fluorescence and pH sensitivity.