8136
Chemical and thermal properties of the PA12 parts were also evaluated using attenuated total reflection infrared spectroscopy ( ATR FT-IR ) , x-ray photoelectron spectroscopy ( XPS ) and differential scanning calorimetry ( DSC ) .
 concept or principle: thermal properties; material: PA12; process characterization: reflection; concept or principle: infrared; process characterization: FT-IR; process characterization: x-ray photoelectron spectroscopy; process characterization: XPS; concept or principle: scanning; process characterization: DSC
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: manufacturing standard, machanical property, manufacturing process, material, engineering feature, process parameter, machine or equipment, application, process characterization, enabling technology, biomedical, concept or principle 
Text: {0} 
 Entities: thermal properties, PA12, reflection, infrared, FT-IR, x-ray photoelectron spectroscopy, XPS, scanning, DSC 
Answer:
 concept or principle: thermal properties; material: PA12; process characterization: reflection; concept or principle: infrared; process characterization: FT-IR; process characterization: x-ray photoelectron spectroscopy; process characterization: XPS; concept or principle: scanning; process characterization: DSC