Bibek Thapa

5 Questions 11 Answers 0 Followers

Questions related from Bibek Thapa

Do nanoparticles of 15 nm sized (MW 441 Da) can flow out of dialysis membrane of 5 kDa if it is not conjugated with 5 kDa PEG?

We PEGylated nanoparticles in DMSO with (5KDa PEG). Then we performed dialysis using a membrane of 3.5-5 kDa MWCO against DI water. Our nanoparticles has mol. wt. of 441 g/mol (441 Da) and size...

14 December 2021 5,756 12 View

How to conjugate APTES with COOH-PEG-Folate?

I want to conjugate APTES with COOH-PEG-Folate. The purpose is to make amide bonding between -NH2 of APTES with COOH of COOH-PEG-Folate. Is this possible by EDC/NHS crosslinking? Which medium is...

04 November 2021 3,811 14 View

Should we strip off oleic acid from iron oxide nanoparticles for the measurements of XRD, VSM etc for oleic acid coated iron oxide nanoparticles?

I would be grateful to you if somebody suggests me to solve my problem. I synthesized oleic acid coated iron oxide nanoparticles by thermal decomposition method. Now for XRD and VSM measurements,...

13 July 2016 1,830 2 View

How much PEG(M.W. 3350)/magnetite (Fe3O4) powder should be added to water to obtain aq. solution with iron concentration of [Fe]=1 mM?

I have magnetite (Fe3O4) powder coated with PEG (M.W 3350). I am unable to calculate how much powder should be added to water to obtain aq. solution of powder with iron concentration of [Fe]=1 mM....

20 November 2015 3,108 3 View

Why does the peak position shift in powder XRD?

If the sample is not in the right height, the XRD spectra will shift due to the fact that: incoming beam has certain divergence, and the detector has certain angle of acceptance.

14 November 2014 4,927 1 View