6165
Example printed specimens were produced with thermoplastic polyurethane ( TPU ) elastomer blended with rigid polylactic acid ( PLA ) and Nylon blended with PLA .
 thermoplastic polyurethane, elastomer, polylactic acid, PLA, Nylon, PLA
Please list all entity words in the text that fit the category. Output format is "word1, 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} 
Answer:
 thermoplastic polyurethane, elastomer, polylactic acid, PLA, Nylon, PLA