Document Details

Document Type : Article In Journal 
Document Title :
Polymethy lmethacry late- montmorillonite composites: preparation, characterization and properties
Polymethy lmethacry late- montmorillonite composites: preparation, characterization and properties
 
Document Language : English 
Abstract : The objective of this work was directed to solve a problem of polymerization shrinkage in acrylic resin polymethylmethacrylate (PMMA) material. Organophilic montmorillonite (clay tone) was added up to 1% by weight to one commercial type of PMMA powder to form PMMA-MMTcomposite. Acrylic specimens were processed by the conventional heat curing method following manufacturer's instructions. Thermogravimetric analysis data indicates that polymer-clay composites exhibit significant increase in thermal stability with very small amount of inorganic content. The morphology of the composites was verified using scanning electron microscopy revealing the absence of large mineral aggregates. Interlamellar spacing was measured from wide angle X-ray diffraction. The d(OOI) spacing of clay was expanded to 18 A in clay tone and the intensity of the peaks is progressively reduced with increasing the concentration of polymer in the comp~sites samples. Warpage and linear dimensional change measurements were achieved using 'traveling microscope' and one way analysis of variance was employed to compare results. The results indicated that there was a significant decrease of warpage and linear dimensional changes between PMMA specimens and that of PMMA-MMT composite materials. © 2001 Elsevier Science Ltd. All rights reserved. 
ISSN : 0 
Journal Name : Polymer 
Volume : 42 
Issue Number : 1 
Publishing Year : 2001 AH
2001 AD 
Article Type : Article 
Added Date : Friday, January 4, 2008 

Researchers

Researcher Name (Arabic)Researcher Name (English)Researcher TypeDr GradeEmail
محمد شحاتهShehata, Mohamed ResearcherDoctoratemmmuhammad@kau.edu.sa

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