| Autor: |
Zoia V Voitenko, Michele Edge, Alexander A Pokcholenko, S. V. Ryabov, Sergiy N Kobylinskyy, Norman S. Allen |
| Rok vydání: |
2002 |
| Předmět: |
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| Zdroj: |
Polymer Degradation and Stability. 75:229-236 |
| ISSN: |
0141-3910 |
| Popis: |
Novel effective oligomeric amine co-synergists and donor–acceptor systems have been developed coupled with an investigation into the effect of their chemical structure and molar ratio with the following proton acceptors—IBBA (isobutyl ester of benzophenone–p-carboxylic acid) and 4-phenylbenzo-phenone (4-PhBP). For this purpose a range of oligomeric amines (OA) with molecular weights from 500 to 4250—polyoxypropylenetetraethyldiamine and polyoxypropylene-N-tetraethylmalediamide,polyoxypropyleneN-tetraethylphthalediamide having end-terminated tertiary amines groups and a different chemical structure on their backbone have been synthesised on the base of Huntsman commercial products—Jeffamine 1 D Series of diamines (D400 and D2000) and have been characterized by IR-spectra, mass-spectrometry analysis and NMR-methodologies. The kinetics of photoinitiated polymerisation of the triacrylate monomer with the above oligomers were monitored by two methods: real time infra red (RTIR) spectroscopy and microwawe photodielectrometry equipment. The results obtained by these two methods (Rp—rate of polymerisation, conversion level, induction time) are in good agreement. Thus, application of the oligomeric amines elaborated were found to be effective for accelerating the photopolymerisation and enabling the polymer properties to be regulated in a number of ways by varying their chemical structure. It has been shown that chemical configuration of amines, molecular weight and molar ratio influenced the rate of UV-light induced polymerisation. # 2002 Elsevier Science Ltd. All rights reserved. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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