CAJ | 학술논문

采用水热法制得直径为100 nm左右的纳米银颗粒，然后制备出壳层厚度为15 nm左右的Ag@SiO2，并通过三步反应将铕配合物Eu(TTA)3Phen(简称为EuTP)包覆在Ag@SiO2的表面，最后通过熔融共混法将Ag@SiO2@EuTP与聚丙烯(PP)共混得到荧光增强薄膜。分别采用透射电镜(TEM)、紫外–可见光光谱(UV–Vis)、荧光光谱等对样品进行表征。TEM，UV–Vis表明，Ag在甲醇溶剂中实现了包覆。荧光光谱表明，当硅层厚度为15 nm左右时，铕配合物的荧光强度明显增强；相同密度的PP／Ag@SiO2@EuTP共混材料的荧光强度增加了近8倍；加入Ag@SiO2@EuTP后，PP的力学性能也有所提高，当其加入量为1%时，PP／Ag@SiO2@EuTP的力学性能最好，拉伸弹性模量达到3.22 MPa，屈服应力为44.59 MPa。
채용수열법제득직경위100 nm좌우적납미은과립，연후제비출각층후도위15 nm좌우적Ag@SiO2，병통과삼보반응장유배합물Eu(TTA)3Phen(간칭위EuTP)포복재Ag@SiO2적표면，최후통과용융공혼법장Ag@SiO2@EuTP여취병희(PP)공혼득도형광증강박막。분별채용투사전경(TEM)、자외–가견광광보(UV–Vis)、형광광보등대양품진행표정。TEM，UV–Vis표명，Ag재갑순용제중실현료포복。형광광보표명，당규층후도위15 nm좌우시，유배합물적형광강도명현증강；상동밀도적PP／Ag@SiO2@EuTP공혼재료적형광강도증가료근8배；가입Ag@SiO2@EuTP후，PP적역학성능야유소제고，당기가입량위1%시，PP／Ag@SiO2@EuTP적역학성능최호，랍신탄성모량체도3.22 MPa，굴복응력위44.59 MPa。
The silver nano particles with diameters at 100 nm were prepared through chemical reduction method. Then Ag@SiO2 composites whose thickness of silica shell were about 15 nm were prepared. The europium complex with 2-thenoyltrifluoroacetone (TTA) and 1,10-phenanthroline(phen) was synthesized and coated on the surface of Ag@SiO2 by three steps. Finally,the Ag@SiO2@EuTP was blended with polypropylene(PP) to get the fluorescence enhancement film by melt blending method.The structure and compositions of the samples were characterized by transmission electron microscope(TEM) and UV - visible spectra(UV–Vis). TEM and UV–Vis indicate that the Ag can be coated successfully in methanol. By comparing the fluorescence emmission spectrum of Ag@SiO2@EuTP with EuTP with the same conzentration,the prepared structure exhibite a good effect on the fluorescence enhancement when the thickness of silicon is 15 nm. The fluorescence intensity of the blend films with the same weight proportion increase nearly 8 times. After blending Ag@SiO2@EuTP with PP,the mechanical properties of PP are improved. When the content of Ag@SiO2@EuTP is 1%,the mechanical properties of PP/Ag@SiO2@EuTP is the best,the tensile modulus reach 3.22 MPa,the yield stress is 44.59 MPa.