Starch-filled biodegradable Plastics 1

[ttpolymer]

Dear All,

I've got a plastic film which is transparent and a liitle bit rough because of the white visible granules inside the film. I suspect it to be starch and would like to know whether there are any methods to identify the granules.
Would anyone help me? Thanks.

 

[ZiggyK]

Fourier transform infrared analysis (FTIR) will verify if the "particles" are starch or a mineral like talc or TiO2.
Many labs can perform the analysis for about $150-$200 dollars.