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Carbon-13 high resolution solid state NMR study of natural fibres obtained from sugar cane without treatment and their composites with EVA

1998; Elsevier BV; Volume: 17; Issue: 3 Linguagem: Inglês

10.1016/s0142-9418(97)00024-x

1873-2348

Giovanni Chaves Stael, José Roberto Moraes d’Almeida, Sônia Maria Cabral de Menezes, Maria Inês Bruno Tavares,

Advanced MRI Techniques and Applications

Natural fibres from three distinct type of sugar cane without any specific treatment to remove the sugar, lignin and impurities and their composites with EVA, have been analysed by carbon-13 high-resolution solid state nuclear magnetic resonance (NMR). The NMR techniques used were cross-polarization magic angle spinning (CP/MAS); variable contact-time and proton spin-lattice relaxation time in the rotating frame (T1Hρ). From those measurements it was observed that the molecular mobility of chains along the fibres has a particular behaviour.