Elmira Tavasoli

10 Questions 9 Answers 0 Followers

Questions related from Elmira Tavasoli

Does anybody know anything about the second peak (hump) of amorphous polymers at 2θ around 45 degree in the XRD diagram?

For amorphous polymers such as polyethersulfone (PES), a relatively sharp peak can be observed at 2θ=18 degree in the XRD pattern (bellow figure) which is known as amorphous halo and represents...

02 February 2016 1,923 4 View

What are the differences between these terms?

1. short fiber 2. particles 3. powder For example I have milled carbon fiber.....i don't know how to consider the type of such reinforcements. Is milled carbon fiber classified into short...

01 January 2016 3,283 4 View

What is the relation between tensile strength and flexural strength in isotropic material?

hello all, i want to know what the relations between these following parameters are in an isotropic material: 1. relation between tensile strength and flexural strength in isotropic material 2....

10 October 2015 1,570 21 View

How to separate data in excel file?

look at this attachment....the data are get together...i want to have each data in specific column...because i want to draw diagrams..... please help me i want for example time in one column and...

10 October 2015 2,738 2 View

Are flexural or tensile properties affected more affected by these defects?

hello all,i have another question:if there are some voids and stress concentrations sites in my nanocomposites....which one is affected more by these defects, flexural properties or tensile...

10 October 2015 6,263 3 View

How should I make a solution consisting of two different parts?

i want to produce A 10 mmol l-1 aqueous solution containing equalproportions of iron nitrate (Fe(NO3)3·9H2O, ACS reagent,98+%) and aluminium nitrate (Al(NO3)3·9H2O, ACS reagent,98+%) iron nitrate...

07 July 2015 1,381 1 View

Which acid is better for doping Polyaniline (emeraldine base), HCl or H2SO4?

I know there are different acids for doping PANI but my question is as following: HCl is stronger than H2SO4 but some articles say that H2SO4 is better doping acid for PANI (EB), what is its...

03 March 2015 4,872 9 View

Can anyone help with the doping Polyaniline with HCL?

I have two cases: number one: I doped 20 gr poly aniline film in 20 cc 1 molar HCL for 4 hours. number two: I doped 40 gr poly aniline film in 20 cc 1 molar HC for 4 hours at the same condition as...

03 March 2015 7,939 5 View

What is the best doping agent for polyaniline emeraldine base / NMP solution?

Hello every body, issue number one I cast polyaniline emeraldine base/ NMP in petri dish then I would like to doping I know there are many different acids used for doping, please give me priority...

03 March 2015 6,897 8 View

How can I make a solution to consist of two different parts?

The article says as followings: First: 2 different solutions are produced as below: 3% Poly A solution in DMF2% Poly B solution in DMF Second: Poly B solution was added to...

03 March 2015 5,595 9 View