An efficient procedure to produce polyethene-graft-polystyrene (E-C3-graft-PS) copolymers by simple thermal treatment at 200 °C of polyethene (PE)-contg. cyclopropane ring units (E-C3) in the presence of a high excess of styrene is reported. The high treatment temp. likely induces the breaking of the constrained cyclopropane rings, leading to the formation of radicals on the PE chains. The presence of styrene during the thermal treatment allows the formation of side polymer chains on the starting materials and, consequently, of graft copolymers. The graft copolymers that were obtained are efficient compatibilizers for polymer blends as was detd. from scanning electron micrographs, which were used to examine the bulk morphologies of two blends: one composed of 50/50 PE and polystyrene (PS), and the other of 49/49/2 PE, PS and E-C3-graft-PS.

Synthesis of polyethene-graft-polystyrene copolymers from linear polyethene-containing cyclopropane rings

PRAGLIOLA, Stefania;LONGO, Pasquale
2011-01-01

Abstract

An efficient procedure to produce polyethene-graft-polystyrene (E-C3-graft-PS) copolymers by simple thermal treatment at 200 °C of polyethene (PE)-contg. cyclopropane ring units (E-C3) in the presence of a high excess of styrene is reported. The high treatment temp. likely induces the breaking of the constrained cyclopropane rings, leading to the formation of radicals on the PE chains. The presence of styrene during the thermal treatment allows the formation of side polymer chains on the starting materials and, consequently, of graft copolymers. The graft copolymers that were obtained are efficient compatibilizers for polymer blends as was detd. from scanning electron micrographs, which were used to examine the bulk morphologies of two blends: one composed of 50/50 PE and polystyrene (PS), and the other of 49/49/2 PE, PS and E-C3-graft-PS.
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11386/3880453
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 6
  • ???jsp.display-item.citation.isi??? 6
social impact