The effect of water activity on the sorption and diffusion of water in thermosets based on polyester, vinyl ester, and novolac resins.(Report): An article from: Polymer Engineering and Science
Book Details
PublisherSociety of Plastics Engineers, Inc.
ISBN / ASINB007Z3401U
ISBN-13978B007Z34017
AvailabilityAvailable for download now
Sales Rank99,999,999
MarketplaceUnited States 🇺🇸
Description
This digital document is an article from Polymer Engineering and Science, published by Society of Plastics Engineers, Inc. on April 1, 2012. The length of the article is 4416 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available immediately after purchase. You can view it with any web browser.
From the author: In this work, the transport properties of water in various thermoset resins typically used for fiber-reinforced plastic process equipment (vinyl ester, novolac, bisphenol-A-epoxy-based polyester, and urethane-modified vinyl ester) were systematically studied with a focus on the effects of water activity. Sorption and desorption studies were carried out in aqueous solutions (water activity = 0.78-1) with different salts (NaCI, Mg[Cl.sub.2], [Na.sub.2][SO.sub.4], and KCI) and one nonionic substance (sucrose) within the temperature interval 65-95 C. It was found that the water concentration in thermoset resins with different chemical structures could be predicted from the water activity, regardless of the actual solute (salt or sucrose) in the aqueous solution. The water quasi-equilibrium concentration decreased with decreasing water activity, whereas the average diffusion coefficient was considered to be independent of water activity in the studied water activity range. A relationship, based on a power law fit, was established describing the water concentration as a function of the water activity and the concentration of pure water. The relationship was independent of resin chemistry and temperature. POLYM. ENG. SCI., 52:718-724, 2012. [c]2012 Society of Plastics Engineers
Citation Details
Title: The effect of water activity on the sorption and diffusion of water in thermosets based on polyester, vinyl ester, and novolac resins.(Report)
Author: S. Romhild
Publication:Polymer Engineering and Science (Magazine/Journal)
Date: April 1, 2012
Publisher: Society of Plastics Engineers, Inc.
Volume: 52 Issue: 4 Page: 718(7)
Article Type: Report
Distributed by Gale, a part of Cengage Learning
From the author: In this work, the transport properties of water in various thermoset resins typically used for fiber-reinforced plastic process equipment (vinyl ester, novolac, bisphenol-A-epoxy-based polyester, and urethane-modified vinyl ester) were systematically studied with a focus on the effects of water activity. Sorption and desorption studies were carried out in aqueous solutions (water activity = 0.78-1) with different salts (NaCI, Mg[Cl.sub.2], [Na.sub.2][SO.sub.4], and KCI) and one nonionic substance (sucrose) within the temperature interval 65-95 C. It was found that the water concentration in thermoset resins with different chemical structures could be predicted from the water activity, regardless of the actual solute (salt or sucrose) in the aqueous solution. The water quasi-equilibrium concentration decreased with decreasing water activity, whereas the average diffusion coefficient was considered to be independent of water activity in the studied water activity range. A relationship, based on a power law fit, was established describing the water concentration as a function of the water activity and the concentration of pure water. The relationship was independent of resin chemistry and temperature. POLYM. ENG. SCI., 52:718-724, 2012. [c]2012 Society of Plastics Engineers
Citation Details
Title: The effect of water activity on the sorption and diffusion of water in thermosets based on polyester, vinyl ester, and novolac resins.(Report)
Author: S. Romhild
Publication:Polymer Engineering and Science (Magazine/Journal)
Date: April 1, 2012
Publisher: Society of Plastics Engineers, Inc.
Volume: 52 Issue: 4 Page: 718(7)
Article Type: Report
Distributed by Gale, a part of Cengage Learning
