New catalysts for poly(ethylene terephthalate)‐bisphenol a polycarbonate reactive blending | Zendy

Fiorini Maurizio | Zendy; Berti Corrado | Zendy; Ignatov Vladimir | Zendy; Toselli Maurizio | Zendy; Pilati Francesco | Zendy

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New catalysts for poly(ethylene terephthalate)‐bisphenol a polycarbonate reactive blending

Author(s) -

Fiorini Maurizio,

Berti Corrado,

Ignatov Vladimir,

Toselli Maurizio,

Pilati Francesco

Publication year - 1995

Publication title -

journal of applied polymer science

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.575

H-Index - 166

eISSN - 1097-4628

pISSN - 0021-8995

DOI - 10.1002/app.1995.070550802

Subject(s) - catalysis , bisphenol a , polycarbonate , ethylene , polymer chemistry , nuclear chemistry , solubility , materials science , chemistry , ether , organic chemistry , epoxy

The effects of various catalysts on the reactive blending of poly(ethylene terephthalate) (PET) and bisphenol A polycarbonate (PC) was investigated. The various catalysts employed for PET syntheses, Ti(OBu)4, SmL 3 , EuL 3 , Ca + Sb, CeAc 3 , Er(NO 3 ) 3 ·B 12 C 4 and Tb (acac) 3 ·diPy (where L is o ‐formylphenolate; B 12 C 4 is a crown ether, benzo‐12‐crown‐4; acac is acetylacetonate; and diPy is 2,2′‐dipyridyl) have shown a different catalytic activity toward exchange reactions. Solubility tests, in solvents able to separate unreacted PET and PC, and selective degradation of the PC segments, combined with 1 H NMR spectroscopy and size exclusion chromatography, made it possible to order the catalysts according to their catalytic activity: Ti(OBu)4 ≫ SmL 3 > EuL 3 > Ca + Sb > CeAc 3 ∼Er(NO 3 )·B 12 C 4 > Tb (Acac) 3 ·diPy ≈ 0. © 1995 John Wiley & Sons, Inc.

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