Main Page
About
Faculty
Dean
Organizational Structure
Academic Accreditations
"Strategic Plan "Ebtesama-Smile
Administration
Vice Deanships
Academic Affairs
Female Section
Graduate Studies and Research
University Dental Hospital
Development
Departments
Diagnostic Oral Sciences
Periodontology
Oral Biology
Oral & Maxillofacial Prosthodontics
Oral & Maxillofacial Surgery
Endodontics
Restorative Dentistry
Orthodontics
Pediatric Dentistry
Dental Public Health
Goals and Objectives
Education
Bachelor
Interns Program
Postgraduate Studies
Research
University Dental Hospital
Community Services
House of Expertise
Files
Contact Us
Directory of Faculty Staff
عربي
English
About
Admission
Academic
Research and Innovations
University Life
E-Services
Search
Faculty of Dentistry
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 Type
Dr Grade
Email
محمد شحاته
Shehata, Mohamed
Researcher
Doctorate
mmmuhammad@kau.edu.sa
Files
File Name
Type
Description
Polymethy lmethacry late- montmorillonite composites.pdf
pdf
Back To Researches Page