مشروع البحث: SYNTHESIS AND CHARACTERIZATION OF POLYMER COMPOSITES REINFORCED WITH STRONTIUM TITANATE-BASED NANOPARTICLES FOR DENTISTRY APPLICATIONS
تحميل...
المساهمين
الممولين
رقم التعريف
1321
الباحث
هدى الطاهر الهمالي ابراهيم
الوصف
this broad context, perovskite-structured strontium titanate (SrTiO3) has emerged as a ceramic material with a potential for biomedical applications [6,7]. It combines high Young’s modulus, hardness and thermal stability, with promising bioactivity and antibacterial behaviour in other implant-related systems. Along with SrTiO3, manganese oxide (MnO2) and yttrium oxide (Y2O3) are known for their chemical stability, potential antibacterial effects and established biocompatibility, especially Y2O3, in the context of yttria-stabilized zirconia [8,9]. These oxides have largely been used either in bulk ceramics or as coatings, rather than as fillers in dental polymers and only a few reports have examined their direct incorporation into PMMA. In some of those earlier attempts, for instance, with neat Y2O3, mechanical performance deteriorated because large, stiff particles created severe inhomogeneity and stress concentratiions spots, showing that filler chemistry alone is not enough; particle size, agglomeration behaviour and interfacial properties are equally important. Recently, composite engineering turned from single fillers towards hybrid systems that combine two or more phases to exploit synergistic effects
الكلمات الدالة
CHARACTERIZATION OF POLYMER COMPOSITES REINFORCED