Matrix polymn. can be viewed as an intriguing procedure for the prepn. of homogeneous blends that are otherwise difficult or practically impossible to prep. Poly(p-phenyleneterephthalamide) has been synthesized by direct polycondensation in the presence of poly(N-vinylpyrrolidone) or poly(4-vinylpyridine) as polymer matrixes. The mol. wt. effect of the latter polymers on the intrinsic viscosity of the aramid has been investigated. Poly(p-phenyleneterephthalamide), characterized by intrinsic viscosity as high as 14.2 dL/g, is obtained when high mol. wt. poly(N-vinylpyrrolidone) is used. The intimate composites formed in situ have been characterized by solid-state NMR. The parent and daughter polymers in the composite present the same proton T1 relaxation times in the rotating frame, and this value differs from that of the neat polymers; this result demonstrates the intimacy of the blend at the level of a few nanometers.

Simonutti, R., Mariani, A., Sozzani, P., Bracco, S., Piacentini, M., & Russo, S. (2002). Poly(p-phenyleneterephthalamide)-Based Nanocomposites Obtained by Matrix Polycondensation. Synthesis and Solid-State NMR Characterization. MACROMOLECULES, 35(9), 3563-3568 [10.1021/ma010007g].

Poly(p-phenyleneterephthalamide)-Based Nanocomposites Obtained by Matrix Polycondensation. Synthesis and Solid-State NMR Characterization

SIMONUTTI, ROBERTO;SOZZANI, PIERO ERNESTO;BRACCO, SILVIA;
2002

Abstract

Matrix polymn. can be viewed as an intriguing procedure for the prepn. of homogeneous blends that are otherwise difficult or practically impossible to prep. Poly(p-phenyleneterephthalamide) has been synthesized by direct polycondensation in the presence of poly(N-vinylpyrrolidone) or poly(4-vinylpyridine) as polymer matrixes. The mol. wt. effect of the latter polymers on the intrinsic viscosity of the aramid has been investigated. Poly(p-phenyleneterephthalamide), characterized by intrinsic viscosity as high as 14.2 dL/g, is obtained when high mol. wt. poly(N-vinylpyrrolidone) is used. The intimate composites formed in situ have been characterized by solid-state NMR. The parent and daughter polymers in the composite present the same proton T1 relaxation times in the rotating frame, and this value differs from that of the neat polymers; this result demonstrates the intimacy of the blend at the level of a few nanometers.
No
Articolo in rivista - Articolo scientifico
Scientifica
nanocomposites, poly(p-phenyleneterephthalamide), polycondensation, poly(N-vinylpyrrolidone), poly(4-vinylpyridine) MAS NMR spectroscopy
English
3563
3568
6
Simonutti, R., Mariani, A., Sozzani, P., Bracco, S., Piacentini, M., & Russo, S. (2002). Poly(p-phenyleneterephthalamide)-Based Nanocomposites Obtained by Matrix Polycondensation. Synthesis and Solid-State NMR Characterization. MACROMOLECULES, 35(9), 3563-3568 [10.1021/ma010007g].
Simonutti, R; Mariani, A; Sozzani, P; Bracco, S; Piacentini, M; Russo, S
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/10281/4034
Citazioni
  • Scopus 8
  • ???jsp.display-item.citation.isi??? 8
Social impact