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Frontal polymerization of diurethane diacrylates

Mariani, Alberto and Fiori, Stefano and Bidali, Simone and Alzari, Valeria and Malucelli, Giulio (2008) Frontal polymerization of diurethane diacrylates. Journal of Polymer Science. Part A: Polymer Chemistry, Vol. 46 (10), p. 3344-3352. eISSN 1099-0518. Article.

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DOI: 10.1002/pola.22675

Abstract

This work deals with the preparation of poly(urethane acrylates) by using two different polymerization techniques. Namely, the classical batch procedure has been compared with frontal polymerization (FP). A thorough study on the effect of initiator type, concentration, and on the velocity of the front and its maximum temperature has been carried out. Moreover, two different synthetic ways have been studied: the one step poly(urethane acrylate) preparation starting directly from 1,6 diisocyanato hexane and 2-hydroxyethyl acrylate, and the two step procedure consisting of the synthesis of the corresponding diurethane diacrylate and of its subsequent polymerization. The first method has the advantage of being faster but some caution is necessary due to the excessive heat that is generated if the reaction conditions are not properly chosen. The second approach requires a further step but has the advantage of being more controlled. DSC analysis did not show any significant difference by comparing the thermal properties of the materials obtained by the two techniques (batch and FP). However, since FP runs are very easy and fast to be performed, FP should be seriously taken into proper account when these materials have to be prepared.

Item Type:Article
ID Code:1825
Status:Published
Refereed:Yes
Uncontrolled Keywords:Addition polymerization, differential scanning calorimetry (DSC), diurethane diacrylates, frontal polymerization, initiators, poly(urethane acrylates), radical polymerization
Subjects:Area 03 - Scienze chimiche > CHIM/04 Chimica industriale
Divisions:001 Università di Sassari > 01 Dipartimenti > Chimica
Publisher:Wiley Periodicals
eISSN:1099-0518
Deposited On:18 Aug 2009 10:06

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