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Titolo:
Solid-state NMR studies on phase behavior and motional mobility in binary blends of polystyrene and poly(cyclohexyl methacrylate)
Autore:
Wu, RR; Kao, HM; Chiang, JC; Woo, EM;
Indirizzi:
Natl Cent Univ, Dept Chem, Chungli 32054, Taiwan Natl Cent Univ Chungli Taiwan 32054 iv, Dept Chem, Chungli 32054, Taiwan Natl Sci Council, Tainan Reg Instrument Ctr, Tainan 70101, Taiwan Natl SciCouncil Tainan Taiwan 70101 nstrument Ctr, Tainan 70101, Taiwan Natl Cheng Kung Univ, Dept Chem Engn, Tainan 70101, Taiwan Natl Cheng KungUniv Tainan Taiwan 70101 Chem Engn, Tainan 70101, Taiwan
Titolo Testata:
POLYMER
fascicolo: 1, volume: 43, anno: 2002,
pagine: 171 - 176
SICI:
0032-3861(200201)43:1<171:SNSOPB>2.0.ZU;2-B
Fonte:
ISI
Lingua:
ENG
Soggetto:
NUCLEAR-MAGNETIC-RESONANCE; HIGH-RESOLUTION NMR; POLY(METHYL METHACRYLATE); CHLORIDE) BLEND; POLYMER BLENDS; OXIDE) BLENDS; MISCIBILITY; COMPATIBILITY; SEPARATION; MIXTURES;
Keywords:
polystyrene; poly(cyclohexyl methacrylate); polymer blends;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
27
Recensione:
Indirizzi per estratti:
Indirizzo: Kao, HM Natl Cent Univ, Dept Chem, Chungli 32054, Taiwan Natl Cent Univ Chungli Taiwan 32054 Chem, Chungli 32054, Taiwan
Citazione:
R.R. Wu et al., "Solid-state NMR studies on phase behavior and motional mobility in binary blends of polystyrene and poly(cyclohexyl methacrylate)", POLYMER, 43(1), 2002, pp. 171-176

Abstract

The phase behavior and motional mobility in binary blends of polystyrene (PS) and poly(cyclohexyl methacrylate) (PCHMA) have been investigated by solid state C-13 NMR techniques. The blend miscibility has been studied by examining the H-1 spin-relaxation times in the laboratory frame (T-H(1)) and in the rotating frame (T-1 rho(H)) for the PCHMA/PS blends with various compositions and pure components. The T-1 rho(H) results show that PCHMA and PSare intimately mixed at the molecular level within the blends at all compositions. In addition, according to the results of carbon T-1 rho. relaxation time measurements, we conclude that mixing is intimate enough to cause a reduction in local chain mobility for PS, but an increase in side chain mobility for PCHMA. (C) 2001 Elsevier Science Ltd. All rights reserved.

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Documento generato il 04/04/20 alle ore 08:50:24