Dynamic mechanical behavior of atactic and high-impact polystyrene

Results of the dynamic mechanical behavior of atactic polystyrene (PS) and high-impact polystyrene (HIPS) for temperatures between 300 and 425 K at a frequency of the order of 50 kHz are presented. The storage Young's modulus, (E′), of the HIPS is lower than the PS value, being the relationship...

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Autor principal: Goyanes, Silvia Nair
Formato: Acta de conferencia Capítulo de libro
Lenguaje:Inglés
Publicado: John Wiley & Sons Inc 2000
Acceso en línea:Registro en Scopus
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100 1 |a Goyanes, Silvia Nair 
245 1 0 |a Dynamic mechanical behavior of atactic and high-impact polystyrene 
260 |b John Wiley & Sons Inc  |c 2000 
270 1 0 |m Goyanes, S.N.; Universidad de Buenos Aires, Buenos Aires, Argentina 
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506 |2 openaire  |e Política editorial 
520 3 |a Results of the dynamic mechanical behavior of atactic polystyrene (PS) and high-impact polystyrene (HIPS) for temperatures between 300 and 425 K at a frequency of the order of 50 kHz are presented. The storage Young's modulus, (E′), of the HIPS is lower than the PS value, being the relationship between them a function of the rubber phase volume fraction, independent of the measurement frequency. The glass transition temperature (Tg) of HIPS is shifted to lower temperature in respect to the PS. The γ relaxation appears at 308 K in PS at 50 kHz, while it seems to move toward lower temperatures in the HIPS. Both shifts are attributed to the presence of mineral oils in the HIPS. The values of E′, Tg, and the temperature of the γ relaxation at 50 kHz are discussed within the scope of the theory of viscoelasticity. Finally, the effect of thermal treatments, using different annealing times, on the behavior of both materials is shown.  |l eng 
593 |a Lab. Propiedades Mecanicas Poli. M., Dpto. de Física, Ciudad Universitaria, 1428 Buenos Aires, Argentina 
690 1 0 |a ANNEALING 
690 1 0 |a ELASTIC MODULI 
690 1 0 |a GLASS TRANSITION 
690 1 0 |a MINERAL OILS 
690 1 0 |a RELAXATION PROCESSES 
690 1 0 |a THERMAL EFFECTS 
690 1 0 |a VISCOELASTICITY 
690 1 0 |a VOLUME FRACTION 
690 1 0 |a ATACTIC POLYSTYRENE 
690 1 0 |a HIGH IMPACT POLYSTYRENE 
690 1 0 |a POLYSTYRENES 
711 2 |c New York 
773 0 |d John Wiley & Sons Inc, 2000  |g v. 75  |h pp. 865-873  |k n. 7  |p J. Appl. Polym. Sci.  |x 00218995  |w (AR-BaUEN)CENRE-330  |t Journal of Applied Polymer Science 
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