Assertion: polymer | /r/HasProperty | rigid
Facets:
value: without a plasticizer
type: OTHER
value: very
type: DEGREE
Source sentences:
text: In general, polymers with glass transition temperatures above room temperature (approximately 20° C or 70° F) are strong and rigid, while those below are typically elastomers.
text: Polymers having a dense network, such as PF resin, are very rigid
text: Without a plasticizer, most polymers would just be too brittle and rigid to be useful.