The melting behavior of nanoporous-crystalline (NC) poly(2,6-dimethyl-1,4-phenylene)oxide (PPO) films is obtained by guest removal from co-crystalline (CC) films, as crystallized by sorption at different temperatures of liquid guests exhibiting largely different molecular volumes, is discussed. For all the considered guest-induced crystallizations, the NC α form is obtained with melting temperatures (Tm) being essentially independent of the chemical nature of the guest. Tm of α NC films, as obtained by solution casting, instead widely varies with guest molecular volume (Tm in the range 236–264°C). This difference in the melting behavior of α NC PPO films is obtained by solution casting and guest-induced crystallization using the same guest is attributed to the kinetics of the crystallization.
Melting Behavior of Nanoporous-Crystalline Poly(2,6-Dimethyl-1,4-Phenylene) Oxide Films
Salman S.;Daniel C.;Rizzo P.
2024-01-01
Abstract
The melting behavior of nanoporous-crystalline (NC) poly(2,6-dimethyl-1,4-phenylene)oxide (PPO) films is obtained by guest removal from co-crystalline (CC) films, as crystallized by sorption at different temperatures of liquid guests exhibiting largely different molecular volumes, is discussed. For all the considered guest-induced crystallizations, the NC α form is obtained with melting temperatures (Tm) being essentially independent of the chemical nature of the guest. Tm of α NC films, as obtained by solution casting, instead widely varies with guest molecular volume (Tm in the range 236–264°C). This difference in the melting behavior of α NC PPO films is obtained by solution casting and guest-induced crystallization using the same guest is attributed to the kinetics of the crystallization.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.