【摘 要】
:
A novel sulfonated diamine monomer, 1,2-dihydro-2-(3-sulfonic-4-aminophenyl)-4-[4-(4-aminophenoxy)-phenyl]phthalazin1-one (S-DHPZDA), was successfully synthesiz
【机 构】
:
Department of Polymer Science and Materials
论文部分内容阅读
A novel sulfonated diamine monomer, 1,2-dihydro-2-(3-sulfonic-4-aminophenyl)-4-[4-(4-aminophenoxy)-phenyl]phthalazin1-one (S-DHPZDA), was successfully synthesized by direct sulfonation of diamine 1,2-dihydro-2-(4-aminophenyl)-4-[4-(4-aminophenoxy)-phenyl]-phthalazin- 1-one (DHPZDA). A series of sulfonated polyimides (SPIs), which can be used as the material of the proton exchange membrane (PEM) for the proton exchange membrane fuel cell (PEMFC), were prepared from 1,4,5,8-naphthalenetetracarboxylic dianhydride (NTDA), S-DHPZDA, and nonsulfonated diamines DHPZDA. The structure of the monomer and polymers were characterized by FT-IR and 1H NMR. The solubility of the S-DHPZDA-based SPIs has been improved due to the induction of the phthalazione moiety. The SPIs membranes have high thermo-stability, predominant swelling resistance with high ion exchange capacity.
其他文献
A novel metal-organic coordination polymer [Mn3(2,2-dipha)3(phen)6]n·3nH2O (2,2-dipha = 2,2-diphenic acid, phen = 1,10-phenanthroline) 1 has been hydrothermall
Fe(0.2 mol%):Cu(0.04 mol%):LiNbO3 crystals with different doping concentration of In3+ (0, 1.0, 2.0, 3.0mol%) were grown by Czochralski method, and then oxidize
Isovaleraldehyde possesses malty, fruity, cocoa-like odor and is widely used in fruit, chocolate, coffee flavors. The preparation of natural isovaleraldehyde by
The mechanisms about the waters and methanols effects on the alcoholysis of N-benzyl-3-oxo-β-sultam together with their differences have been studied by using
Based on the fact that some metal ions can catalyze the chemiluminescence (CL) reaction of luminol with K3Fe(CN)6, a novel capillary electrophoresis CL method w
感官类标准样品是标准样品的一大类,是农产品分等定级和定性判定的基础性物质.但目前感官标准样品特别是农产品感官标准样品与理化标准样品的研制存在较大差别,难以采用现有
Nonlinear optical CsB3O5 single crystals have been grown successfully using NaF as a flux. The primary CsB3O5-NaF quasi-binary system has been investigated by X
Wastewater stabilization ponds generate low cost by-products that are useful for agriculture.The utilization of these by-products for soil amendment and as a so
Based on the assumption that the Pomeron is a sum of Regge multipoles, each of which corresponds to a finite gluon ladder, we suggest a way to search the Oddero
A novel ternary borate, sodium strontium pentaborate, NaSrB5O9, has been prepared by solid-state reaction below 800 ℃. The single-crystal X-ray structural anal