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Layla Abdulkareem Al Juhaiman

Professor

عضو هيئة تدريس

كلية العلوم
11495,Box 22452
المنشورات
مقال فى مجلة
2016

PREPARATION AND CHARACTERIZATION OF POLYSTYRENE/ORGANOCLAY NANOCOMPOSITES FROM RAW CLAY

, L. A. AL JUHAIMAN*, D. A. AL-ENEZI†, W. K. MEKHAMER . 2016

Polystyrene/clay nanocomposite (PCN) was successfully prepared. Five characterization methods were applied: Particle size distribution analysis (PSD), Fourier Transfer Infrared spectra (FTIR), X-ray diffraction (XRD), Transmission Electronic Microscopy (TEM) and Differential Scanning Calorimetry (DSC). PCN was prepared by modification of Raw Kholais clay first with NaCl then with Cetylpyridinium chloride (CPC) surfactant to obtain the organoclay (OC). After ion exchange with CPC, FTIR confirmed the existence of these intercalated agents in the organic clay samples. PSD showed that the size of the monodispersed particles of Na-clay was about 1335 nm while the OC shows one peak with a narrow size distribution in the histogram of 738nm which indicate that a homogenous polymer/clay nanocomposites will be obtained. The preparation of polystyrene/OC nanocomposites was accomplished by solution blending method at different ratios of OC. They were labelled 1%, 3%, 5% and 10% NC. PCN films were characterized using XRD and TEM. Exfoliated structure was obtained for the low clay loading (1-5 % NC) while intercalated structure was probably the predominated form in the case of 10% NC. DSC showed that Tg at low clay content (1-5 wt %) decreased compared to pure polystyrene which reflected the plasticization effect of the organic modifier.  
 

نوع عمل المنشور
A paper from a master degree study
رقم المجلد
1
رقم الانشاء
11
مجلة/صحيفة
Digest Journal of Nanomaterials and Biostructures
الصفحات
105-114
مزيد من المنشورات
publications

Abstract: This work aimed to compare the coating protection efficiency of C-steel using two kinds
of clay: a local Khulays clay (RCKh) from Saudi Arabia and a commercial clay (CCIn) from…

بواسطة Nashwa A. Howyan, Layla A. Al Juhaiman, Waffa K. Mekhamer and Hissah H. Altilasi
2023
تم النشر فى:
Metals -MDPI journal
publications

Polymer–Clay Nanocomposite (PCN) coatings were prepared using the solution intercalation
method. The raw Khulays clay was treated with NaCl to produce sodium clay (NaC). Thereafter,

بواسطة Aljawharah M. Alangari , Layla A. Al Juhaiman ,* and Waffa K. Mekhamer
2023
تم النشر فى:
-MDPI-Polymers
publications

Polystyrene/clay nanocomposite (PCN) was successfully prepared. Five characterization methods were applied: Particle size distribution analysis (PSD), Fourier Transfer Infrared spectra (FTIR), X-…

بواسطة L. A. AL JUHAIMAN*, D. A. AL-ENEZI†, W. K. MEKHAMER
2016
تم النشر فى:
Digest Journal of Nanomaterials and Biostructures