8704
Varying carbon fiber volume fractions from 0 to 4 vol % was melt blended with a masterbatch of TPU + 10 wt % MWCNT followed by extrusion .
 carbon fiber, melt, extrusion
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:
 carbon fiber, melt, extrusion