| abstract |
The object of the invention be to provide a kind of have can replace the performance of the polyimides synthetic from petroleum or polyamide, by the synthetic macromolecule raw material of the raw material that is derived from natural molecule. Solution is that macromolecular material is that macromolecule raw material is polymerized, and this macromolecule raw material is made up of the dimer of the 4-amino-cinnamic acid as natural molecule or the dimer of 4-amino-cinnamic acid derivative, and carboxyl is protected with alkane chain. Fig. 5 has provided according to the TGA curve of polyamic acid of the present invention (PAA-1) and polyimides (PI-1). |