Question

Thermoplastic polyimides are derived from what reaction

Answer 1

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Answer:

A thermoplastic, or thermosoftening plastic, is a plastic polymer material that becomes pliable or moldable at a certain elevated temperature and solidifies upon cooling.

A thermoplastic, or thermosoftening plastic, is a plastic polymer material that becomes pliable or moldable at a certain elevated temperature and solidifies upon cooling.Most thermoplastics have a high molecular weight. The polymer chains associate by intermolecular forces, which weaken rapidly with increased temperature, yielding a viscous liquid. In this state, thermoplastics may be reshaped and are typically used to produce parts by various polymer processing techniques such as injection molding, compression molding, calendering, and extrusion. Thermoplastics differ from thermosetting polymers which form irreversible chemical bonds during the curing process. Thermosets do not melt when heated, but typically decompose and do not reform upon cooling.

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Answer 2

Explanation:

Thermoplastic polyimides are derived from _Imidization_ reaction between diamines and _dianhydrides_. Explanation: Polyimides obtained by reaction of pyromellitic acid diimide with aliphatic dihalides19 or bis halo methyl disiloxanes20 were insoluble and had low molecular weights.