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Rheo-Optical Properties of Ion Irradiated Polystyrene Films

Published online by Cambridge University Press:  22 February 2011

L. Calcagno ,
G. Compagnini ,
G. Foti ,
A. Mezzasalma  and
G. Mondio
L. Calcagno
Affiliation:
Dipartimento di Fisica - Corso Italia 57, 95129 Catania (Italy)
G. Compagnini
Affiliation:
Dipartimento di Fisica - Corso Italia 57, 95129 Catania (Italy)
G. Foti
Affiliation:
Dipartimento di Fisica - Corso Italia 57, 95129 Catania (Italy)
A. Mezzasalma
Affiliation:
Istituto di Struttura della Materia- Salita Sperone, 31 Messina (Italy)
G. Mondio
Affiliation:
Istituto di Struttura della Materia- Salita Sperone, 31 Messina (Italy)
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Abstract

Rheological and optical properties of polystyrene are modified by 200 keV He irradiation because of new molecular bonds induced by ion energy deposition. Total amount of bonds, as calculated by optical measurements, increases linearly with ion fluence without any dependence on the initial molecular weight. Density of interchain bonds or crosslinks, as calculated by rheological measurements, increases linearly at low fluence (∼1013 ions/cm2), while for high values shows a saturation behaviour.

Correlation between optical and rheological measurements allows us to calculate the fractions of interchain and intrachain bonds of ion irradiated 9000, 35000 and 100000 initial molecular weight samples.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 214: Symposium R1 – Optical and Electrical Properties of Polymers , 1990 , 163
Copyright
Copyright © Materials Research Society 1991

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References

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