6665
Its physicochemical properties were characterised by gel permeation chromatography ( GPC ) , gas chromatography - mass spectrometry ( GC - MS ) , thermal gravimetric analysis ( TGA ) , Fourier transform infrared spectrometry ( FTIR ) , UV - visible spectrophotometry , dynamic light scattering ( DLS ) and viscometry analysis .
 None
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 None