8452
The liquid preceramic polymer ( polysilazane type ) quickly infiltrates the 3D scaffolds , under vacuum conditions , entirely covering the GO network creating a replica of the original scaffold .
 polymer, 3D, GO, scaffold
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:
 polymer, 3D, GO, scaffold