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Effect of ambient-temperature and high-temperature electron-beam radiation on the structural, thermal, mechanical, and dynamic mechanical properties of injection-molded polyamide-6,6

Sengupta, Rajatendu ; Sabharwal, S. ; Tikku, V. K. ; Somani, Alok K. ; Chaki, Tapan K. ; Bhowmick, Anil K.

Journal of applied polymer science, 2006-02, Vol.99 (4), p.1633-1644 [Periódico revisado por pares]

Hoboken: Wiley Subscription Services, Inc., A Wiley Company

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  • Título:
    Effect of ambient-temperature and high-temperature electron-beam radiation on the structural, thermal, mechanical, and dynamic mechanical properties of injection-molded polyamide-6,6
  • Autor: Sengupta, Rajatendu ; Sabharwal, S. ; Tikku, V. K. ; Somani, Alok K. ; Chaki, Tapan K. ; Bhowmick, Anil K.
  • Assuntos: Applied sciences ; electron beam irradiation ; Exact sciences and technology ; injection molding ; mechanical properties ; nylon ; Physical properties ; Polymer industry, paints, wood ; Properties and testing ; Radiation influence ; Technology of polymers ; WAXS
  • É parte de: Journal of applied polymer science, 2006-02, Vol.99 (4), p.1633-1644
  • Notas: istex:914C96A6706FA485D44FF91485AC151B977C5806
    ArticleID:APP22689
    Department of Atomic Energy, Board of Research in Nuclear Sciences - No. Mumbai vide sanction no. 2002/35/7/BRNS/172
    ark:/67375/WNG-CP5LKV7P-2
    ObjectType-Article-2
    SourceType-Scholarly Journals-1
    ObjectType-Feature-1
    content type line 23
  • Descrição: Electron‐beam irradiation of injection‐molded specimens of polyiminohexamethyleneiminoadipoyl (better known as polyamide‐6,6) was carried out in air at ambient temperature (303 K) and a high temperature (393 K). Most of the irradiated specimens were tensile dumbbells, although a few were cylinders for compressive stress relaxation testing. A few representative samples were dipped in triallyl cyanurate (TAC) solution before ambient‐temperature irradiation. The gel content of the specimens increased with radiation dose and the temperature of irradiation. Moreover, the TAC‐treated specimens showed an increase in gel content over the neat specimens irradiated at the same dose levels. Wide‐angle X‐ray scattering and differential scanning calorimetry studies revealed that the crystallinity decreased with increasing radiation dose. Irradiation at the high temperature and treatment with TAC further decreased the crystallinity compared to irradiation at ambient temperature. As determined from compressive stress relaxation and mechanical and dynamic mechanical properties, the optimized radiation dose for ambient‐temperature radiation was 200 kGy. The gels had a stiffening effect, and the rate of relaxation decreased significantly. The water‐uptake characteristics of the tensile specimens were investigated; this revealed a decrease in the water absorption tendency with increasing gel content. © 2005 Wiley Periodicals, Inc. J Appl Polym Sci 99: 1633–1644, 2006
  • Editor: Hoboken: Wiley Subscription Services, Inc., A Wiley Company
  • Idioma: Inglês
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