Imidazole-substituted ROMP polymers: Post-modification of poly(norbornenediester) derivatives with aminolysis reactions


ÖZTÜRK B. Ö. , Yakut E., Ak E., Sehitoglu S. K.

REACTIVE & FUNCTIONAL POLYMERS, cilt.111, ss.22-29, 2017 (SCI İndekslerine Giren Dergi) identifier identifier

Özet

In this study, ring-opening metathesis polymerization (ROMP) polymers bearing imidazole and morpholine functionalities were synthesized using an efficient and inexpensive post-modification procedure. First, dimethyl-5-norbornene-2,3-dicarboxylate was polymerized (Mn: 130 kDa,13: 123) in the presence of Grubbs third-generation catalysts through ROMP reactions. Second, these ROMP polymers were modified using octylamine, 1-(3-aminopropyl)imidazole, and 1-(3-aminopropyl)morpholine in the presence of catalytic amounts of tin(II)hexanoate; Sn(Oct)(2), titanium(IV)isopropoxide; Ti(O-i-Pr)(4); and 1,5,7-triazabicyclo[4.4.0]dec-5-ene. Modified polymers were characterized by H-1, C-13 NMR, FT-IR, differential scanning calorimetry, thermogravimetric analysis, and gel permeation chromatography. Quantitative conversions were achieved using 1-(3-aminopropyl)imidazole as a modification agent in the presence of 10% Sn(Oct)(2). (C) 2016 Elsevier B.V. All rights reserved.