Highly Deformable, Ultrathin Large-Area Poly(methyl methacrylate) Films.

ABSTRACT: Poly(methyl methacrylate) (PMMA) is a glassy engineering polymer that finds extensive use in a number of applications. Over the past decade, thin films of PMMA were combined with graphene or other two-dimensional materials for applications in the area of nanotechnology. However, the effect of size upon the mechanical behavior of this thermoplastic polymer has not been fully examined. In this work, we adopted a homemade nanomechanical device to assess the yielding and fracture characteristics of freestanding, ultrathin (180-280 nm) PMMA films of a loaded area as large as 0.3 mm². The measured values of Young's modulus and yield strength were found to be broadly similar to those measured in the bulk, but in contrast, all specimens exhibited a quite surprisingly high strain at fail

SUBMITTER: Pantano MF 

PROVIDER: S-EPMC8015101 | biostudies-literature | 2021 Mar

REPOSITORIES: biostudies-literature