INQUISUR   21779
INSTITUTO DE QUIMICA DEL SUR
Unidad Ejecutora - UE
artículos
Título:
The role of unsaturations in the Gamma irradiation of crosslinkable polymers
Autor/es:
SATTI, ANGEL; CIOLINO, ANDRES; ANDREUCETTI, NOEMI; VALLES, ENRIQUE
Revista:
RADIATION PHYSICS AND CHEMISTRY (OXFORD)
Editorial:
PERGAMON-ELSEVIER SCIENCE LTD
Referencias:
Lugar: Amsterdam; Año: 2015 vol. 115 p. 119 - 126
ISSN:
0969-806X
Resumen:
Nowadays,the understanding of the interaction of ionizing radiations with polymeric materials is becoming increasingly important.It is well known that many parameters regarding the synthesis of the polymers noticeably affect their radiation process.In this work,ananalysis of the effect of the type andthe position of unsaturations in the molecular structure of crosslinkable polymers is performed.For such purpose, two solid semycristalline metallocenic ethylene1-olefin copolymers(mEOC)which contain a low concentration of unsaturations from the synthesis,and their hydrogenated samples,were irradiated along withliquidpoly(dimethylsiloxane)(PDMS) homo and copolymers containing different location and concentration of vinyl groups,which were structurally tailored through anionic synthesis.The source of irradiation was 60Co, under vacuum at room temperature,in all the cases.The results indicated that terminal vinyls drastically accelerate the crosslinking to lower doses,even at much lower concentrations than other type and location of unsaturations for both,mEOC and PDMS,type of polymers