Artículo
Abstract:
Some results of the influence of γ radiation on the mechanical properties of Polymethylmethacrylate are presented. Doses of 0, 50, 100, 150 and 200 kGy were employed. The internal friction (loss tangent) and storage shear modulus were measured at temperatures between 173 K and 300 K using a damped torsion pendulum. Compressive tests were made at room temperature with strain rates between 1.4×10-3 s-1 and 3.5×10-2 s-1. The materials studied were previously characterized by means of their molecular weight with the GPC technique. Loss tangent versus frequency curves are given, showing the α, α′ and β relaxations. A linear relationship between the glass transition temperature, calculated at a fixed frequency, and the irradiation dose is obtained. An anomalous behaviour of the shear storage modulus of the material when it was irradiated at doses lower than 100 kGy was noticed. A similar response was observed in measurements of the yield point in the same material.
Registro:
| Documento: | Artículo |
| Título: | Internal friction in irradiated polymethylmethacrylate |
| Autor: | Goyanes, S.N.; Benites, G.M.; Rubiolo, G.H.; Marzocca, A.J. |
| Filiación: | Lab. Propiedades Mecanicas Poli. M., Dto. de Física, Ciudad Universitaria, (1428) Cap. Fed., Argentina Dto. de Materials, Comn. Nac. de Ener. Atómica, Av. del Libertador 8250, (1424) Buenos Aires, Argentina |
| Palabras clave: | Anelastic relaxation; Compression testing; Gamma rays; Gel permeation chromatography; Glass transition; Internal friction; Mechanical properties; Molecular weight; Strain rate; Temperature; Storage shear modulus; Polymethyl methacrylates |
| Año: | 1996 |
| Volumen: | 6 |
| Número: | 8 |
| Página de inicio: | C8 |
| Página de fin: | 587-C8-590 |
| Título revista: | Journal De Physique. IV : JP |
| Título revista abreviado: | J Phy IV JP |
| ISSN: | 11554339 |
| CODEN: | JPICE |
| Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_11554339_v6_n8_pC8_Goyanes |
Referencias:
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- Ferry, J.D., (1980) Viscoelastic Properties of Polymers, pp. 294-306. , John Wiley & Sons, New York
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Citas:
---------- APA ----------
Goyanes, S.N., Benites, G.M., Rubiolo, G.H. & Marzocca, A.J. (1996) . Internal friction in irradiated polymethylmethacrylate. Journal De Physique. IV : JP, 6(8), C8-587-C8-590.Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_11554339_v6_n8_pC8_Goyanes [ ]
---------- CHICAGO ----------
Goyanes, S.N., Benites, G.M., Rubiolo, G.H., Marzocca, A.J. "Internal friction in irradiated polymethylmethacrylate" . Journal De Physique. IV : JP 6, no. 8 (1996) : C8-587-C8-590.Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_11554339_v6_n8_pC8_Goyanes [ ]
---------- MLA ----------
Goyanes, S.N., Benites, G.M., Rubiolo, G.H., Marzocca, A.J. "Internal friction in irradiated polymethylmethacrylate" . Journal De Physique. IV : JP, vol. 6, no. 8, 1996, pp. C8-587-C8-590.Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_11554339_v6_n8_pC8_Goyanes [ ]
---------- VANCOUVER ----------
Goyanes, S.N., Benites, G.M., Rubiolo, G.H., Marzocca, A.J. Internal friction in irradiated polymethylmethacrylate. J Phy IV JP. 1996;6(8):C8-587-C8-590.Available from: https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_11554339_v6_n8_pC8_Goyanes [ ]
