Citation | Athene Donald is distinguished for her work relating mechanical properties to the structure of polymers. She showed that polymer crazing could not be understood without reference to the entanglement network, and showed that two processes are involved, chain scission and chain disentanglement, depending differently on temperature and molecular weight. This work underpins the understanding of brittleness and ductility in solid polymers. She pioneered studies of thermotropic liquid crystalline polymers via transmission electron microscopy, revealing the ubiquity of banded textures after shear flow in these materials. More recently, she has developed X-ray methods for characterising starch, thereby opening up the field to novel physical methods which enhance those of the plant biologists and food scientists. |