کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
12373 791 2005 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Spatially resolved photopolymerization kinetics and oxygen inhibition in dental adhesives
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی بیو مهندسی (مهندسی زیستی)
پیش نمایش صفحه اول مقاله
Spatially resolved photopolymerization kinetics and oxygen inhibition in dental adhesives
چکیده انگلیسی

A comparative study of three commercial dental adhesives was performed by 1H nuclear magnetic resonance spectroscopy and Stray-Field magnetic resonance imaging. Spectroscopic evidence was found for the presence of solvent and unreacted methacrylate groups in photopolymerized adhesives. Spatially resolved photopolymerization kinetics and volumetric contraction (solvent evaporation and polymerization shrinkage) were obtained without solvent removal and in the presence of oxygen from the atmosphere. The oxygen and solvent inhibitor effects in the photopolymerization were found to be higher for water/ethanol based adhesives. However, was one of these adhesives that exhibited less spatially dependent irradiation time to start vitrification, higher concentration and a more uniform spatial distribution of rigid domains at the end of the photopolymerization.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Biomaterials - Volume 26, Issue 14, May 2005, Pages 1809–1817
نویسندگان
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