Basheer A. Alshammari

11 Questions 42 Answers 0 Followers

Questions related from Basheer A. Alshammari

What do dispersion and distribution of the filler into polymer matrix mean?

Or why are good dispersion and bad distribution of filler good for electrical conductivity? Thanks in advance

21 November 2014 6,120 8 View

Can I use TGA to measure thermal stability of polymer composites under N2 and air?

I observed that In Air much improvement compared with polymer than that in N2 . For example : polymer thermal decomposition is 320 composites in Air is 350 but in N2 is 310 ? Any idea , thanks

21 November 2014 1,655 4 View

Why is storage modulus important?

Where can use composites that have a higher storage modulus than the matrix. Please help.

06 November 2014 8,601 6 View

Why doesn't residual time in extruder effect the electrical conductivity of polymer composites?

I tested the conductivity of the composites after changing the screw speed and time. I found screw speed more effective and change the values by 2 order but when I change time from 5 to 10 min ,...

06 November 2014 323 2 View

What is the difference between compatibilizer and coupling agents for polymer composites?

Any help will be appreciated thanks

31 October 2014 9,666 14 View

How can I know the effective modulus of fillers inside the polymer from tensile or DMTA data?

Effective modulus. Please help.

10 September 2014 1,815 3 View

What is the optimum temperature for Acid treatment of MWCNTs?

I am doing acid cutting for CNTs and not sure what is the best temperature. Could you plese advise me. thanks in advance

09 July 2014 4,361 3 View

Why does the tensile strength decrease despite a good dispersion of acid treated CNTs in polymer?

Tensile properties.

05 July 2014 4,104 0 View

Why does tensile strength decrease upon addition of a nanofiller while ease tensile modulus increases?

Anyone help please.

16 June 2014 5,182 17 View

Why does Tg decreases for polymer Nanocomposite containing acid treated MWCNT despite a good interaction between the polymer and filler?

Acid treatment advice needed.

03 June 2014 2,254 14 View

Length and diameter of a fiber

Why does usually length of fiber increase the tensile of strength of a composites but this strength decrease with increase the diameter of fiber ? Any idea . Why tensile strength of carbon fiber...

01 January 1970 8,400 7 View