Alejandra Tapia Sierra

5 Questions 11 Answers 0 Followers

Questions related from Alejandra Tapia Sierra

How could I determinate the suggested application rates of a new organic fertilizer ?

I am developing a new natural fertilizer, I have compared with other commercial fertilizers and the compositions of most of these are pretty similar to mine, however, I would like to know how can...

02 February 2018 7,614 4 View

Can a polymer increase at first and then decrease his weight when it is inmersed on water?

How can this be possible? which conditions or modifications can change the polymer behavior on water?

02 February 2016 5,316 11 View

What solvent can I use to solubilize the SEBS block copolymer (different to dichloroethane) ?

I need to make the casting of the copolymer of styrene-ethylene-butylene-styrene ( SEBS ) and I wonder what I could use as solvent (different to dicloroethane)

03 March 2015 3,233 8 View

How can I calculate the acetyl sulfate ( sulfonating agent ) necessary for the sulfonation of block copolymer SEPS (with 21 % styrene) ?

I need to know how much sulfonating agent i need to the sulfonating of 5 grams SEPS

03 March 2015 7,248 7 View

Where in structure of block copolymer (like SEPS or SEBS) is grafted the maleic anhydride by reactive extrusion?

I need to draw the structure of SEPS with maleic anhydride graft.

01 January 2015 3,160 3 View