Degradation study on the thermally stable nickel phthalocyanine sheet polymer

• Published in: Polymer degradation and stability Vol. 80; no. 3; pp. 427 - 433
• Main Authors: Achar, B.N., Fohlen, G.M., Lokesh, K.S.
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier Ltd 2003; Elsevier Science
• Subjects: Applied sciences; Degradation; Exact sciences and technology; Inorganic and organomineral polymers; MS and GC–MS; Physicochemistry of polymers; Poly (nickel phthalocyanine); Preparation; Thermal stability; Degradation; MS and GC–MS; Poly (nickel phthalocyanine); Thermal stability; Metallophthalocyanin polymer; Polychelate; Organometallic polymer; Thermooxidative degradation; Experimental study; Fragmentation; Thermal properties; MS and GC-MS; Gas chromatography; Preparation; Reaction mechanism; Nickel complex; Measurement method; Degradation product; Mass spectrometry; Thermal degradation
• ISSN: 0141-3910; 1873-2321
• DOI: 10.1016/S0141-3910(03)00024-7

Poly (nickel phthalocyanine) which has exceptional thermal stability is synthesized. Knowledge of modes of degradation of this polymer is found to be necessary for its high temperature applications. This polymer showed very high thermal stability with maximum polymer decomposition temperatures (PDT max) of 500 °C in air and 890 °C in N 2, with char yield 93% at 800 °C. Because of its excellent thermal stability, degradation study with MS as well as GC–MS techniques were found to be very difficult. The present publication deals with MS and GC–MS studies of nickel phthalocyanine sheet polymer at high temperatures ranging from 700 to 1000 °C. Tentative mechanisms are proposed for its modes of fragmentations and based on GC–MS studies, the most probable degradation products are identified.