Preparation of HTPB-based polyurethane elastomer using polyfunctional HTPB synthesized by in-situ nitroxide mediated polymerization of 1,3-butadiene: 2) Dynamic- mechanical properties study

Rezaei Haghighat, Hassan; Barikani, Mehdi; Morshedian, Jalil

Volume 10, Issue 1 (3-2015) مواد پرانرژی 2015, 10(1): 13-22 | Back to browse issues page

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Rezaei Haghighat H, Barikani M, Morshedian J. Preparation of HTPB-based polyurethane elastomer using polyfunctional HTPB synthesized by in-situ nitroxide mediated polymerization of 1,3-butadiene: 2) Dynamic- mechanical properties study. مواد پرانرژی 2015; 10 (1) :13-22
URL: http://isaem.ir/article-1-375-en.html

Preparation of HTPB-based polyurethane elastomer using polyfunctional HTPB synthesized by in-situ nitroxide mediated polymerization of 1,3-butadiene: 2) Dynamic- mechanical properties study

Hassan Rezaei Haghighat ^*

, Mehdi Barikani

, Jalil Morshedian

Engineering Research Institute , hrezaei@eri.ac.ir

Abstract: (6271 Views)

In order to increasing of hydroxy functionality of HTPB, an in-situ nitroxide mediated polymerization (NMP) of 1,3-butadiene was carried out in presence of TEPA as a polyfunctional nitroxide precursor. The effects of this new hydroxyl-terminated polybutadiene on thermal and dynamic-mechanical properties of its corresponding polyurethane elastomer were studied by DSC and DMTA tests. A significant enhancement in crosslink density of the elastomeric product with small increase in glass transition temperature was achieved using PFHTPB. Also the absence of any endothermic peak in DSC thermogram was an indication of no crystalline domain existing in these samples.

Keywords: nitroxide-mediated polymerization, hydroxy terminated polybutadiene, functionality, polyurethane elastomer, dynamic-mechanical properties

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Type of Study: Research | Subject: خواص فیزیکی - مکانیکی پلیمرها
Published: 2015/08/27