Unprecedented Ultrahigh Expansion Injection-Molded Polypropylene Foams with Hydrophobic-Modified Cellulose Nanofibers

摘要

1. CNF can provide some benefits to polymer (PP) foaming. 1.1 Modification of Rheological behavior of PP, which is useful to reduce the cell size. 1.2 Enhancement of Crystallization behavior and reduction of crystal size, which are useful to Increase the number of bubble nucleation site. These benefits come from the heterogeneity of CNF (hydrophilicity). 2. To obtain a uniform cellular structure in foam, good dispersiveness of CNF is inevitable. 3. The optimal chemical modification exists. i.e., The performance of foaming is tunable by DS (chemical modification)