: As paper matures, it undergoes chemical and physical changes—such as the breakdown of cellulose chains—that make it brittle.
The phrase "bend over older mature" in the context of paper likely refers to the , a field of study focused on the brittleness and structural integrity of historical documents. Key Concepts in Paper Aging and Bending bend over older mature
: Researchers use nondestructive tests, like the cantilever test , to measure how much a strip of "mature" or aged paper can bend before it reaches its elastic limit. : As paper matures, it undergoes chemical and
The Bending Mechanics of Aged Paper - ASME Digital Collection : As paper matures