CAJ | 학술논문

由聚N,N-二乙基胺基甲基丙烯酸乙酯( PDEAEMA)与铁纳米颗粒复合制得的纳米铁基复合材料。纳米铁微球表面钝化形成 Fe3 O4后,将多巴胺基引发剂修饰在 Fe3 O4的表面,通过表面引发原子转移自由基聚合( SI-ATRP)将 DEAEMA单体聚合在修饰了多巴胺基引发剂的表面获得Fe-g-PDEAEMA 复合微球。显微结果表明修饰 PDEAEMA后,复合微球的分散性得到了一定的提高；XRD数据表明在纳米铁表面生成了一层Fe3 O4壳。利用透光率测定研究了复合微球的pH敏感性,表明在酸性条件下悬浮性良好,在碱性条件下发生了沉降,复合微球具有pH敏感性。通过还原降解酸性大红染料,表明Fe-g-PDEAEM复合微球与纳米铁相比,其还原性有所提高,合成的Fe-g-PDEAEMA复合微球可用于氯代烃等氯化物污染的水体保护。
유취N,N-이을기알기갑기병희산을지( PDEAEMA)여철납미과립복합제득적납미철기복합재료。납미철미구표면둔화형성 Fe3 O4후,장다파알기인발제수식재 Fe3 O4적표면,통과표면인발원자전이자유기취합( SI-ATRP)장 DEAEMA단체취합재수식료다파알기인발제적표면획득Fe-g-PDEAEMA 복합미구。현미결과표명수식 PDEAEMA후,복합미구적분산성득도료일정적제고；XRD수거표명재납미철표면생성료일층Fe3 O4각。이용투광솔측정연구료복합미구적pH민감성,표명재산성조건하현부성량호,재감성조건하발생료침강,복합미구구유pH민감성。통과환원강해산성대홍염료,표명Fe-g-PDEAEM복합미구여납미철상비,기환원성유소제고,합성적Fe-g-PDEAEMA복합미구가용우록대경등록화물오염적수체보호。
A new kind of nano Fe composite nanoparticles containing poly(N,N-diethylamino ethyl methacrylate)(PDEAEMA) were obtainted. After forming Fe3 O4 on the surface of nano Fe via treatment of passivation,dopamine-based initiator was modified on the surface of the Fe3O4. Fe-g-PDEAEMA nanospheres were obtained via surface initiated atom transfer radical polymerization(SI-ATRP) ,both DEAEMA monomers and dopamine modified on the nano Fe. The transmittance measurements and subsidence dynam-ics data of the Fe-g-PDEAEMA in aqueous solutions indicated that the PDEAEMA was grafted on the surface of nano-Fe contained Fe3 O4 ,the dispersion of Fe-g-PDEAEMA nanospheres was better than that of the nano-Fe in aqueous solution,and the Fe-g-PDE-AEMA has pH sensitivities. At the same time,we found that reduction of Fe-g-PDEAEMA nanospheres was better than that of the nano Fe. Fe-g-PDEAEMA composite microspheres can be used for water protection which contained chlorinated hydrocarbons such as chloride contamination.