以甲基丙烯酸丁酯、苯乙烯、八甲基环四硅氧烷(D4)为分散相,偶氮二异丁腈(azobisisobutyronitrile,AIBN)为引发剂,通过超浓乳液聚合制各具有一定核一壳结构的复合高分子材料.采用透射电镜(transmission electron microscopy,TEM)观测了...以甲基丙烯酸丁酯、苯乙烯、八甲基环四硅氧烷(D4)为分散相,偶氮二异丁腈(azobisisobutyronitrile,AIBN)为引发剂,通过超浓乳液聚合制各具有一定核一壳结构的复合高分子材料.采用透射电镜(transmission electron microscopy,TEM)观测了材料的形态特征,并表征了共聚物的吸水率和接触角.结果表明,所制备的超浓乳液体系具有良好的稳定性,聚合材料耐水性较好.展开更多
PAM-ZnS hybrid microspheres with diameters of 640-660 nm were fabricated in two simple steps: the formation of polyacrylamide（PAM） microspheres via the polymerization of acrylamide in the water phase of a water-in-t...PAM-ZnS hybrid microspheres with diameters of 640-660 nm were fabricated in two simple steps: the formation of polyacrylamide（PAM） microspheres via the polymerization of acrylamide in the water phase of a water-in-toluene emulsion,and the sedimentation of ZnS at the inside or on the surface of the PAM microspheres in the emulsion via the reaction of Zn（AC）2 and Na2S or H2S.ZnS@PAM and PAM@ZnS hybrid microspheres were obtained by the use of Na2S and H2S as the precipitating agent respectively.The hybrid microspheres were characterized with TEM and FTIR spectrum.The XRD results show that ZnS in the hybrid microspheres is in a crystalline state with a face-centered structure.The hybrid microspheres are photoluminescence-active due to the presence of ZnS.展开更多
文摘以甲基丙烯酸丁酯、苯乙烯、八甲基环四硅氧烷(D4)为分散相,偶氮二异丁腈(azobisisobutyronitrile,AIBN)为引发剂,通过超浓乳液聚合制各具有一定核一壳结构的复合高分子材料.采用透射电镜(transmission electron microscopy,TEM)观测了材料的形态特征,并表征了共聚物的吸水率和接触角.结果表明,所制备的超浓乳液体系具有良好的稳定性,聚合材料耐水性较好.
文摘PAM-ZnS hybrid microspheres with diameters of 640-660 nm were fabricated in two simple steps: the formation of polyacrylamide（PAM） microspheres via the polymerization of acrylamide in the water phase of a water-in-toluene emulsion,and the sedimentation of ZnS at the inside or on the surface of the PAM microspheres in the emulsion via the reaction of Zn（AC）2 and Na2S or H2S.ZnS@PAM and PAM@ZnS hybrid microspheres were obtained by the use of Na2S and H2S as the precipitating agent respectively.The hybrid microspheres were characterized with TEM and FTIR spectrum.The XRD results show that ZnS in the hybrid microspheres is in a crystalline state with a face-centered structure.The hybrid microspheres are photoluminescence-active due to the presence of ZnS.
