Post-irradiation crosslinking of partially cured unsaturated polyester resin |
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| Affiliation: | 1. College of Textiles, Donghua University, Shanghai 201620, China;2. Key Laboratory of Textile Science & Technology, Ministry of Education, China;1. School of Environmental and Chemical Engineering, Shanghai University, No. 99, Shanghai Road, Shanghai 200444, China;2. Chemical and Ionizing Radiation Metrology Institute, Shanghai Institute of Measurement and Testing Technology, No. 1500 Zhangheng Road, Shanghai 201203, China;1. ENEA FSN, Casaccia R.C., Via Anguillarese 301, S. Maria di Galeria, 00123 Rome, Rome, Italy;2. University of L’Aquila, Department of Physical and Chemical Sciences, Via Vetoio (Coppito 1), Loc. Coppito, I-67100 L’Aquila, AQ, Italy;3. University of Teramo, Department of Bioscience and Technology for Food Agriculture and Environment, Via Carlo Lerici 1, I-64023 Mosciano Sant’Angelo, Teramo (TE), Italy;1. Laboratory of Theoretical and Applied Mechanics (LMTA), Graduate Program in Mechanical Engineering (PGMEC), Universidade Federal Fluminense – UFF, Rua Passo da Pátria, 156, Bloco E, Sala 216, Niterói, RJ CEP 24210-240, Brazil;2. Facultad de Química, Universidad Autónoma del Estado de México, Paseo Colón esq. Paseo Tollocan S/N, Toluca, México, Mexico;3. Centro Conjunto de Investigación en Química Sustentable UAEM-UNAM, Universidad Autónoma del Estado de México Campus El Rosedal, Autopista Ixtlahuaca-Atlacomulco, km 14.5, C.P. 50200 Estado de México, Mexico |
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| Abstract: | The post-irradiation crosslinking of unsaturated polyester (UP) resin samples irradiated to different doses was monitored during the 15-days period. The post-reaction sensitivity of three experimental techniques was evaluated. Significant changes were detected by extraction analysis that also included determination of the free styrene content. The most substantial changes were detected by differential scanning calorimetry, even up to 5 days after the irradiation. The sensitivity and reproducibility of FTIR was the lowest. The first two techniques detected the influence of particular reaction periods, at which the radiation crosslinking was terminated, on the post-reaction. |
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