Abstract
1H spin-spin relaxation time (T2) and 1H spin-diffusion of poly(4-vinyl phenol)/poly(methyl acrylate) (PVPh/PMA) blend are measured indirectly by observing well-resolved 13C CP/MAS resonance. The results indicate that at 310 K the molecular motion of the whole chain of PMA in the blends is hindered by mixing with PVPh. At 361 K, the blending hinders only the main-chain motion of PMA; the CH3 group in the side-chain still undergoes more or less free rotation. The spin-diffusion from the CH3 protons of PMA to the protons of PVPh occurs in the blend. It is concluded that PVPh and PMA are intimately mixed in the blend.
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Zhang, X., Takegoshi, K. & Hikichi, K. 1H Spin-Spin Relaxation and Spin-Diffusion of Poly(vinyl phenol)/Poly(methyl acrylate) Blends. Polym J 24, 1403–1407 (1992). https://doi.org/10.1295/polymj.24.1403
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DOI: https://doi.org/10.1295/polymj.24.1403