排序方式: 共有24条查询结果,搜索用时 0 毫秒
21.
Dina M. Fouad Aref A. M. Aly Mervat I. A. Mohammed 《Journal of Polymers and the Environment》2017,25(1):25-34
Transition-metal coordination polymers [M(ndc)(bpy)·(H2O)m]·xH2O (where M = Co(II), Ni(II), Cu(II) and Zn(II), ndc = 1,4-naphthalenedicarboxylate, bpy = 4,4′-bipyridine; m = 0 or 1; x = 1 or 2) were prepared by reacting the ligands and metal ions at room temperature with the aid of microwave irradiation and sonication methods. The structure of the coordination polymers was assigned based on elemental analysis, FT-IR and electronic spectral studies, thermal analysis, scanning electron microscope and X-ray powder diffraction. Thermogravimetric analysis was also used to follow up the possible thermal decomposition steps and to calculate the thermodynamic parameters of the nano-sized metal complexes. The kinetic parameters were calculated making use of the Coats–Redfern and Horowitz–Metzger equations. All obtained results of the different technics used in our study stated the ability to synthesis the metal coordination polymers of our interest using both microwave irradiation and sonication methods. 相似文献
22.
El Miloud Maafi Fouad Malek Lan Tighzert Philippe Dony 《Journal of Polymers and the Environment》2010,18(4):638-646
Polyurethane (PU) based on polycaprolactone (PCL) and 4,4′ diphenyl methylene diisocyanate (MDI) was synthesized using a two-step
method. The PU obtained was then blended with various amounts of cellulose extracted from alfa stems to prepare composite
materials. The influence of cellulose on the thermal and mechanical properties of different composites was demonstrated by
means of several characterization techniques such as Fourier transform infrared spectroscopy (FTIR), differential scanning
calorimetry (DSC), scanning electron microscopy (SEM)… 相似文献
23.
Attia Youssef A. Bovera Fulvia Hassan Reda A. Hassan Ebtehal A. Attia Khalil M. Assar Mohamed H. Tawfeek Fouad 《Environmental science and pollution research international》2022,29(17):25111-25111
Environmental Science and Pollution Research - 相似文献
24.
Samir Marwa Geioushy Ramadan A. El-Sherbiny Samya Fouad Osama A. 《Environmental science and pollution research international》2022,29(48):72515-72527
Environmental Science and Pollution Research - In this work, the effect of using Ag-doped TiO2 nanopigments on optical, mechanical and antimicrobial properties of coated paper was explored.... 相似文献