Thermal properties and side chain crystallinity of styrene and n-alkyl methacrylate terpolymers.(Report): An article from: Polymer Engineering and Science
Book Details
PublisherSociety of Plastics Engineers, Inc.
ISBN / ASINB00GSHEGRC
ISBN-13978B00GSHEGR2
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Sales Rank99,999,999
MarketplaceUnited States 🇺🇸
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This digital document is an article from Polymer Engineering and Science, published by Society of Plastics Engineers, Inc. on November 1, 2013. The length of the article is 4026 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: Differential scanning calorimetry method was used for the study of thermal properties of terpolymers of styrene (ST) or methyl methacrylate (MMA) with dodecyl methacrylate and octadecyl methacrylate. Particularly, the interdependencies of the crystallinity content and composition of terpolymers were examined. The increase of the MMA or ST content in terpolymers resulted in the increased glass transition temperatures and decrease of the ratio of crystalline relative to amorphous phase (from 10% for [x.sub.MMA] = 10 mol% to 5.7% for [x.sub.MMA] = 30 mol%, and from 8.5% for [x.sub.ST] = 16 mol% to 4% for [x.sub.ST] = 40 mol%). These kinds of copolymers are commonly used as flow improvers at low temperatures for lubricating mineral oils; therefore a direct correlation between flow behavior of polymer solutions in mineral oil (pour point) and side-chain crystallinity of copolymers was examined. Thus, by increasing the proportion of crystalline phases, i.e. the long-chain alkyl methacrylates in copolymer, the pour point of oil solutions lowers. Thus, the solution of terpolymer with crystalline phase content of 4 mol% displays the pour point of -9[degrees]C while in those with crystalline phase content higher than 7 mol% pour point lowers below--30[degrees]C. POLYM. ENG. SCI., 53:2299-2307, 2013. [c] 2013 Society of Plastics Engineers
Citation Details
Title: Thermal properties and side chain crystallinity of styrene and n-alkyl methacrylate terpolymers.(Report)
Author: Tomislav Karazija
Publication:Polymer Engineering and Science (Magazine/Journal)
Date: November 1, 2013
Publisher: Society of Plastics Engineers, Inc.
Volume: 53 Issue: 11 Page: 2299(9)
Article Type: Report
Distributed by Gale, a part of Cengage Learning
From the author: Differential scanning calorimetry method was used for the study of thermal properties of terpolymers of styrene (ST) or methyl methacrylate (MMA) with dodecyl methacrylate and octadecyl methacrylate. Particularly, the interdependencies of the crystallinity content and composition of terpolymers were examined. The increase of the MMA or ST content in terpolymers resulted in the increased glass transition temperatures and decrease of the ratio of crystalline relative to amorphous phase (from 10% for [x.sub.MMA] = 10 mol% to 5.7% for [x.sub.MMA] = 30 mol%, and from 8.5% for [x.sub.ST] = 16 mol% to 4% for [x.sub.ST] = 40 mol%). These kinds of copolymers are commonly used as flow improvers at low temperatures for lubricating mineral oils; therefore a direct correlation between flow behavior of polymer solutions in mineral oil (pour point) and side-chain crystallinity of copolymers was examined. Thus, by increasing the proportion of crystalline phases, i.e. the long-chain alkyl methacrylates in copolymer, the pour point of oil solutions lowers. Thus, the solution of terpolymer with crystalline phase content of 4 mol% displays the pour point of -9[degrees]C while in those with crystalline phase content higher than 7 mol% pour point lowers below--30[degrees]C. POLYM. ENG. SCI., 53:2299-2307, 2013. [c] 2013 Society of Plastics Engineers
Citation Details
Title: Thermal properties and side chain crystallinity of styrene and n-alkyl methacrylate terpolymers.(Report)
Author: Tomislav Karazija
Publication:Polymer Engineering and Science (Magazine/Journal)
Date: November 1, 2013
Publisher: Society of Plastics Engineers, Inc.
Volume: 53 Issue: 11 Page: 2299(9)
Article Type: Report
Distributed by Gale, a part of Cengage Learning
