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Combinatorial investigation of the structure-properties characterization of photopolymerized dimethacrylate networks

Paper ID Volume ID Publish Year Pages File Format Full-Text
10759 702 2006 7 PDF Available
Title
Combinatorial investigation of the structure-properties characterization of photopolymerized dimethacrylate networks
Abstract

The effects of co-monomer composition and irradiation time in a model two-component dimethacrylate dental resin blend were evaluated using combinatorial methods to determine the degree of methacrylate conversion and resulting mechanical properties. 2-Dimensional gradient samples varying in monomer composition and light exposure time were fabricated. The conversion was measured using near infrared spectroscopy (NIR) and the mechanical properties (i.e., hardness and elastic modulus) were determined using nanoindentation via the continuous stiffness method. An excellent correlation was observed between the reaction conversion and mechanical properties for the cross-linked networks. The methacrylate conversion ranged from 40% to 85% and the mechanical properties increased over two orders of magnitude over this conversion range. The ultimate reaction conversion and mechanical properties depended on both the co-monomer composition and cure time.

Keywords
Cross-linking; Dental restorative materials; Dynamic mechanical analysis (DMA); Infrared spectrum; Mechanical properties; Nanoindentation
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Combinatorial investigation of the structure-properties characterization of photopolymerized dimethacrylate networks
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Publisher
Database: Elsevier - ScienceDirect
Journal: Biomaterials - Volume 27, Issue 9, March 2006, Pages 1711–1717
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
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