Practicing the concept of “structuring” processing in the manufacture of polymer films

Polymer processing is a technology used to transfer raw materials into products with different shapes and functionalities key step for polymer application. After years of development, the task has changed from traditional processing, which mainly addresses specific articles focuses on effect structures properties polymers, modern directly transforms “designed structure” commercial via processing. It so-called “structuring” Owing unique long-chain nature slow topological relaxation, polymers are always driven frozen nonequilibrium conformations, providing an effective way design given material desired structure tunable performances Among endless number techniques, film casting prototypical pathway involving high supercooling or/and strong flow field, based diverse thin films have been successfully developed. In this review, taking isotactic polypropylene (iPP) as example, we highlight strategy in transform various crystalline iPP products.