Carbon-13 NMR high-resolution study at solid of polyamide 6/PPO blends containing compatibilizer-block copolymer and polycarbonate

✍ Scribed by Dilma Alves Costa; Edemilson P. Silva; Clara Marize F. Oliveira; Maria Inês B. Tavares

• Publisher: John Wiley and Sons
• Year: 1997
• Tongue: English
• Weight: 146 KB
• Volume: 64
• Category: Article
• ISSN: 0021-8995
• DOI: 10.1002/(sici)1097-4628(19970523)64:8<1635::aid-app20>3.0.co;2-v

✦ Synopsis

Two types of blends containing polyamide 6 and poly(propylene oxide) (PPO) were prepared. One of them was mixed with polycarbonate (PC) in a Brabender mixer. The other one was prepared in solution with the block copolymer as the interfacial agent. The blends were analyzed by 13 C nuclear magnetic resonance techniques at solid state, such as: magic angle spinning (MAS); cross-polarization MAS, and variable contact time experiment. It was observed that the addition of PC in the nylon 6/PPO system causes a hardening of it, which can be attributed to strong links, like a hydrogen bond. The ideal quantity of block copolymer added to a blend to improve the compatibility is between 5 and 10%. An increase of the quantity of this agent probably makes it act as a third component. Therefore, both PC and block copolymer can be used as an interfacial agent for nylon 6/PPO blends in an ideal composition.