Jason Ju

13 Questions 13 Answers 0 Followers

Questions related from Jason Ju

1-decanol and sodium hydride mixture can be a gel?

Hi, I'm trying to make a basic nonpolar solvent for my experiment. I just mixed 1-decanol and sodium hydride to make an aliphatic base but it became a gel which I didn't expect. For example,...

16 March 2019 8,329 0 View

How can I etch ester in non-polar solvent?

Hi all, I'm struggling with selectively removing polystyrene out of a complex of polystyrene and polyvinylpyridine where those are connected with ester crosslinkers. There is a requirement for...

13 March 2019 4,782 1 View

How can target molecular weight of RAFT reaction depend on CTA instead of Initiator?

I've studied and read the principle of RAFT and its mechanism. By being fragmented and added, the rate of polymerization gets slow under the equilibrium between active and dormant species. But,...

05 October 2018 6,495 0 View

Is Imine group stable at high Temp.?

Hi, I'm curious about imine stability to high temperature like 90 degree celciu. The thing I know about imine stability is pH stability, which says that imine can be hydrolyzed in acidic...

02 October 2018 9,950 5 View

How can I compare and predict the stability to hydrolysis between ester and imine in a specific condition?

I face the problem with the stability to hydrolysis between ester and imine. As far as I know, imine is prone to hydrolysis in acid whereas ester is in both acid and base. My product has both...

27 September 2018 2,539 6 View

Can you let me know the relationship b/w crystallinity and shift in XRD, Raman, FT-IR and others?

First, really thank you for reading my question. Like I said, I really wonder what kind of relationships b/w shift and crystallinity of some substances in those intruments. Please, answer me if...

12 October 2016 2,842 3 View

Can you let me know how to calculate wave impedence?

I added the equation about it here.I'm stopped since I failed to calculate wave impedence.Especially, relative permittivity and relative permeability are big obstacles for me to solve.What I'd...

10 September 2016 6,311 2 View

Why isn't it working to increase voltage above 1 V in galvano setting of EC lab?

Hello, I'm a student studying supercapacitor and using EC lab for measuring electrochemical reactions. I have a queation 'why isn't voltage window above 1 V in galvano setting of EC lab ?' A...

21 July 2016 5,149 4 View

Is there any TEM grid without carbon?

Thank you for reading my question. I'm looking at a TEM-grid without C-component since I'd like to get a microscopic image showing C-layers over metal oxide. When I try to differentiate C layer...

23 June 2016 3,655 6 View

Can I know the exact mechanism by which metal precursor is coated on reduced graphene oxide reduced from graphene oxide??

as far as I'm concerned, graphene oxide(GO) is usually utilized for metal coating. if we suppose that iron precursor such as iron chloride is coated on reduced graphene oxide during which GO is...

06 April 2016 7,513 3 View

Can you explain averge thickness of graphite and graphene nanoplatelet(GNP) or the range of their thicknesses??

Firstly, thank you for reading my question. I'm very confused when I differentiate thicknesses of graphite and GNP and I'd like to know the standard of their thicknesses to classify...

14 March 2016 5,629 3 View

Is iron oxide (Fe3O4) a conducting material or insulating material?

I thought that is conductive when I saw that is a lot more conductive (x10^6) than r-Fe2O3 is in Wikipedia, but some of related papers say it is an insulating material. Which one do u think is...

24 August 2015 6,358 7 View

How does the type of gas atmosphere in TGA affect thermal residue (detailed and specific questions included)?

Good day! I need ur help seriously plz share ur idea with me. my question is, as far as I know there are several gases used in TGA; argon, nitrogen, oxygen and air. I understand the reason argon...

05 August 2015 1,211 19 View