Polyimides derived from mellophanic dianhydride
Fang, XZ; Yang, ZH; Zhang, SB; Gao, LX; Ding, MX
Source PublicationMACROMOLECULES
AbstractThe synthesis of mellophanic dianhydride (MPDA), an isomer of pyromellitic dianhydride (PMDA), was studied. A trend of forming cyclic oligomers in the reactions of MPDA with 4,4'-oxydianiline (ODA) or 4,4'-methylenedianiline (MDA) in DMAC was found. The cyclic dimer from MPDA/MDA was isolated and fully characterized, including an X-ray crystallographic analysis. The reactions of MPDA with aromatic diamines were found much more complicated than those of PMDA. A model study was performed to clarify the reactions. Several byproducts were isolated and characterized, so that, in an usual two-step process to prepare polyimides, imide, amide linkage, and carboxylic group may be involved in the polymer structure. The water, either existing in solvent or being generated during the imidization, is the main reason for the side reactions. The properties of some polyimides derived from MPDA and diamines were tested and compared with those of the isomeric polyimides derived from PMDA.
Indexed BySCI
WOS IDWOS:000178954100013
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Document Type期刊论文
Corresponding AuthorDing, MX
Affiliation1.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China
2.Chinese Acad Sci, Polymer Chem Lab, Petrochem Corp, Changchun 130022, Peoples R China
Recommended Citation
GB/T 7714
Fang, XZ,Yang, ZH,Zhang, SB,et al. Polyimides derived from mellophanic dianhydride[J]. MACROMOLECULES,2002,35(23):8708-8717.
APA Fang, XZ,Yang, ZH,Zhang, SB,Gao, LX,&Ding, MX.(2002).Polyimides derived from mellophanic dianhydride.MACROMOLECULES,35(23),8708-8717.
MLA Fang, XZ,et al."Polyimides derived from mellophanic dianhydride".MACROMOLECULES 35.23(2002):8708-8717.
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