, 6FDA, 2,2-bis(4-[4-amino phenoxy] phenyl) hexafluoropropane (HFBAPP), 4,4'-(hexafluoroisopropylidene)dianiline (6FpDA), 1,3,5-triformylbenzene, 1,4-diaminobenzene and 1,4-dioxane were procured from Sigma Aldrich and used as-received.
Chairman and Deyar Al-Muharraq managing director Aref Hijris thanked the Deputy Premier, on behalf of the board members, for his efforts to develop the property sector.
cellule du DOM du BPDA
. (Michel Debre et l'ile de la Reunion, 24).
The monomer BPDA
was purchased from Beijing Sinmaya Chemicals Co., Ltd., and purified by sublimation before use.
The initial idea for starting the BPDA
was to develop city property that is part of the 220-acre waterfront redevelopment project, but the scope has since grown to include five sites: Cornwall Beach on the waterfront, a parking lot at Cornwall and Maple streets, the Federal Building downtown, the Army Street parcel, and a parcel at 600 W.
NOMENCLATURE BE Binding energy BPDA
Biphenyltetracarboxylic dianhydride CNT Carbon nanotube CTE Coefficient of thermal expansion DFT Density functional theory DMTA Dynamic mechanical thermal analysis EG Expanded graphite FGS Functionalized graphene sheets GO Graphene oxide MWCNT Multi-walled carbon nanotube NMP N-methyl-2-pyrrolidinone PAA Poly(amic acid) PDA Phenylene diamine P1 Polyimide PMMA Poly(methylmethacrylate) POSS Polyhedral oligomeric silsesquioxanes SSNMR Solid state nuclear magnetic resonance TMA Thermornechanical analysis TMS Tetramethylsilane XPS X-ray photoelectron spectroscopy XRD X-ray diffraction REFERENCES
board of directors was formally appointed during a City Council meeting on July 21 and Pike said he was pleased to see they had a good rapport with one another.
Lid 4,4'-Biphenyl BPDA
AR Nippon Kasei Chemical Co..
The slurry of BPDA
(35.10 g, 119.38 mmol) in NMP (74 mL) was added with stirring.