1P185 Characterization of two flagella systems of Azospirillum brasilense

Kanbe, Michio; Ebisawa, Tatsuaki; Aizawa, Shin‐Ichi

doi:10.2142/biophys.45.s78_1

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“…The diamine monomers 3a and 3b were obtained by the catalytic hydrogenation of the dinitro compounds ( 2a and 2b ) with 10% Pd/C in a Parr hydrogenation apparatus. Of the two diamine monomers, CDA is reported in the patent literature, but there are no physical data available for this diamine,22 whereas the other diamine, SDA, is a new compound. The structures of the diamine monomers ( 3a and 3b ) and dinitro compounds ( 2a and 2b ) were ascertained by IR, 1 H‐NMR, 13 C‐NMR, and mass spectroscopy.…”

Section: Resultsmentioning

confidence: 99%

Aromatic polyimides from m‐phenylene diamines containing pendant groups: Synthesis and characterization

Pal

Patil

Dere

et al. 2005

J of Applied Polymer Sci

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ABSTRACT:Two diamine monomers, 4-[4-(1-methyl-1-phenylethyl)phenoxy]-1,3-diamino benzene and 4-{4-[(4-methylphenyl)sulfonyl]phenoxy}-1,3-diamino benzene, were synthesized, and both diamines were polycondensed with three commercial dianhydrides to obtain aromatic polyimides containing pendant groups. The polyimides were characterized by solubility tests, viscosity measurements, IR, 1 H-NMR, and 13 C-NMR spectroscopy, X-ray diffraction studies, and thermogravimetric analysis. The polyimides had inherent viscosities of 0.33-0.58 dL/g in m-cresol at 30 Ϯ 0.1°C. All the polyimides were amorphous and were soluble in solvents such as N, Ndimethylacetamide, N,. Thermogravimetric analysis of the polyimides indicated no weight loss below 410°C under a nitrogen atmosphere.

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Section: Resultsmentioning

confidence: 99%