## Abstract A siloxane‐grafted new diamino monomer DBPDMS has been prepared and used as a co‐monomer in combination with the fluorinated diamine monomer TFBB to prepare siloxane‐grafted polyimides. The polymers have been characterized by means of GPC, IR, and NMR. Their thermal, mechanical, and sur
Synthesis, characterization, and properties of new siloxane grafted copolyimides
✍ Scribed by Anindita Ghosh; Susanta Banerjee; De-Yi Wang; Hartmut Komber; Brigitte Voit
- Publisher
- John Wiley and Sons
- Year
- 2011
- Tongue
- English
- Weight
- 884 KB
- Volume
- 123
- Category
- Article
- ISSN
- 0021-8995
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Random copolyimides with different proportions of a diamine component were prepared by polymerizing different compositions of diamines with various dianhydrides and imidized thermally to 260°C. The imidization percent of poly(amic acid) was characterized at various temperatures by infrared spectrosc
Anhydride terminated polyamic acid prepolymer was prepared from pyromellitic dianhydride and a diamine (para-phenylene diamine/benzidine) in dimethyl formamide. The prepolymer was reacted with the other diamine to obtain (A,B),.,, block copolymic acid. The polyamic acid was converted to the polyimid
## Abstract A new series of polyimides was synthesized by addition polymerization of 4,4′‐(bismaleimido)‐diphenylmethane, 1,4‐piperazine and an amino‐terminated polydimethylsiloxane. The synthesis was carried out in __m__‐cresol solution following a two‐step procedure. Copolymers containing 15 and