Unknown

Dataset Information

0

Mechanoluminescent Imaging of Osmotic Stress-Induced Damage in a Glassy Polymer Network.


ABSTRACT: A chemiluminescent mechanophore, bis(adamantyl-1,2-dioxetane), is used to investigate the covalent bond scission resulting from the sorption of chloroform by glassy poly(methyl methacrylate) (PMMA) networks. Bis(adamantyl)-1,2-dioxetane units incorporated as cross-linkers underwent mechanoluminescent scission, demonstrating that solvent ingress caused covalent bond scission. At higher cross-linking densities, the light emission took the form of hundreds of discrete bursts, widely varying in intensity, with each burst composed of 107-109 photons. Camera imaging indicated a relatively slow propagation of bursts through the material and permitted analysis of the spatial correlation between the discrete bond-breaking events. The implications of these observations for the mechanism of sorption and fracture are discussed.

SUBMITTER: Clough JM 

PROVIDER: S-EPMC5352978 | biostudies-literature |

REPOSITORIES: biostudies-literature

Similar Datasets

| S-EPMC5740496 | biostudies-literature
| S-EPMC8946833 | biostudies-literature
| S-EPMC6859162 | biostudies-literature
| S-EPMC6519945 | biostudies-literature
| S-EPMC4152384 | biostudies-literature
| S-EPMC5349566 | biostudies-literature
| S-EPMC6922385 | biostudies-literature
| S-EPMC10959672 | biostudies-literature
| S-EPMC5210094 | biostudies-literature
| S-EPMC5748276 | biostudies-literature