CAJ | 학술논문

通过熔融共混法制备了聚乳酸（PLLA）／可反应性纳米二氧化硅（RNS）复合材料，用透射电子显微镜观察RNS在PLLA基体中的分散情况，用差示扫描量热仪（DSC）和X射线衍射仪（XRD）对复合材料的非等温结晶行为进行了研究，并利用Jeziomy法和Mo法对复合材料的非等温结晶动力学进行分析。结果表明，RNS在PLLA中分散均匀，RNS的加入虽不会改变PLLA的晶型，但RNS与PLLA之间的相互作用及其异相成核能力会对聚乳酸基体的结晶速率和结晶度产生影响，导致材料结晶过程发生变化。
통과용융공혼법제비료취유산（PLLA）／가반응성납미이양화규（RNS）복합재료，용투사전자현미경관찰RNS재PLLA기체중적분산정황，용차시소묘량열의（DSC）화X사선연사의（XRD）대복합재료적비등온결정행위진행료연구，병이용Jeziomy법화Mo법대복합재료적비등온결정동역학진행분석。결과표명，RNS재PLLA중분산균균，RNS적가입수불회개변PLLA적정형，단RNS여PLLA지간적상호작용급기이상성핵능력회대취유산기체적결정속솔화결정도산생영향，도치재료결정과정발생변화。
PLLA/reactable nano-SiO2 （RNS） nanocomposites are prepared by melting blending, the mi- crophotographs of PLLA/RNS nanocomposites are investigated with transmission electron microscopy （TEM） , and the crystallization behavior of PLLA and its nanocomposites are characterized by differential scanning calorimetry （ DSC ） and X - ray diffraction （XRD） measurements, and Jeziorny model and Mo model are also selected to discussed the nonisothermal crystallization behavior of the PLLA and its nano-composites. The result shows that RNS nanoparticles are homogeneously dispersed in the PLLA matrix, and that the addition of RNS does not change the crystalline form of PLLA but can influence the crystalli-zation rate and crystallinity of PLLA matrix due to the heterogeneous nucleation effect of RNS and the in- teraction between RNS and the PLLA chains.