Co-crystalline and nanoporous-crystalline poly(2,6-dimethyl-1,4-phenylene) oxide (PPO) phases can be achieved for randomly functionalized PPO. In fact, WAXD, DSC, and FTIR studies show the presence of remarkable crystallinity in PPO films with chloroacetyl (−COCH2Cl) side groups up to 17 mol %. More surprisingly, polymer melting temperature remains constant in the range 244−246 °C up to a degree of functionalization of 12 mol %. This behavior is unprecedented in polymer science and can be rationalized by side-group inclusion in PPO intrahelical crystalline channels.
Crystallinity and Melting of Functionalized Poly(2,6-dimethyl-1,4-phenylene) oxide (PPO) / Syed, S.; Nagendra, B.; Acocella, M. R.; Daniel, C.; Rizzo, P.; Tarallo, O.; Guerra, G.. - In: ACS APPLIED POLYMER MATERIALS. - ISSN 2637-6105. - 6:13(2024), pp. 7840-7847. [10.1021/acsapm.4c01314]
Crystallinity and Melting of Functionalized Poly(2,6-dimethyl-1,4-phenylene) oxide (PPO)
Tarallo O.;
2024
Abstract
Co-crystalline and nanoporous-crystalline poly(2,6-dimethyl-1,4-phenylene) oxide (PPO) phases can be achieved for randomly functionalized PPO. In fact, WAXD, DSC, and FTIR studies show the presence of remarkable crystallinity in PPO films with chloroacetyl (−COCH2Cl) side groups up to 17 mol %. More surprisingly, polymer melting temperature remains constant in the range 244−246 °C up to a degree of functionalization of 12 mol %. This behavior is unprecedented in polymer science and can be rationalized by side-group inclusion in PPO intrahelical crystalline channels.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
