Chemistry, like all the natural sciences, begins with the direct observation of nature¡ª in this case, of matter.82830-49-7, Name is 2-Fluoro-1,4-dimethoxybenzene, SMILES is COC1=CC=C(OC)C(F)=C1, belongs to ethers-buliding-blocks compound. In a document, author is Meng, Xiaoyu, introduce the new discover, Category: ethers-buliding-blocks.
The effect of amino-modified mesoporous silica nanospheres on properties of SPEEK/HPW@Mesoporous Silica Nanoparticles proton exchange membrane
Incorporating acid proton carriers into a polymer matrix is an effective way to improve proton conductivity, but the immobilization of acids is a problem. In this work, mesoporous silica nanoparticles (MSNs) incorporating phosphotungstic acid (HPW) into sulfonated poly(ether ether ketone) (SPEEK) improved the conductivity of the proton exchange membrane. Meanwhile, the surface of the MSNs was aminated, and the ion interaction with SPEEK was established to increase the dispersion of MSNs. Composite membranes doped with surface-modified silica (K-MSNs) have excellent proton conductivity and conductivity stability. When the K-MSNs content was 1 wt%, the proton conductivity of the composite membrane reached 243 mS/cm at 60 degrees C. After 240 hr of immersion at 60 degrees C, proton conductivity was retained at 210 mS/cm. Compared with MSNs, K-MSNs has a large number of amino groups on its surface, which can effectively reduce the loss of HPW.
The proportionality constant is the rate constant for the particular unimolecular reaction. the reaction rate is directly proportional to the concentration of the reactant. I hope my blog about 82830-49-7 is helpful to your research. Category: ethers-buliding-blocks.