Fabio Invernizzi

4 Questions 11 Answers 0 Followers

Questions related from Fabio Invernizzi

Hard segment calculation in polyurethane elastomer?

I want to synthesize a polyurethane elastomer based on pTHF (1000g/mol), MDI and BDO via two-step method. The molar ratio are 0.3 / 1 / 0.7 respectively. There is someone that can calculate the...

07 July 2016 6,828 2 View

Polyurethane electrical resistivity discrepancy?

I have synthesized a polyurethane elastomer inspired to the composition of Estane 58888TM (pTHF 1000g/mol, MDI, BDO - 46% HS). I synthesized my PU via two-step method with 51% HS content, and...

07 July 2016 8,305 4 View

What are the possible causes of the no signal DSC graph of a polymer sample?

I have a polyether-based polyurethane sample (4,4'-MDI as diisocyanate) that I want to investigate with DSC. I carried out the experiments with a temperature range between -80°C / +250°C and a...

02 February 2015 2,573 7 View

Which is the best procedure to synthesize polyurethane in solution?

I have to use the two-step method but the chain extender is solid. If the final PU is soluble, how can I get it to precipitate, to obtain the polymer solid?

01 January 2015 5,245 14 View