Solid-state NMR studies on phase behavior and motional mobility in binary blends of polystyrene and poly(cyclohexyl methacrylate)

Ru Rong Wu; Hsien Ming Kao; J. C. Chiang; E. M. Woo

doi:10.1016/S0032-3861(01)00570-5

Solid-state NMR studies on phase behavior and motional mobility in binary blends of polystyrene and poly(cyclohexyl methacrylate)

Ru Rong Wu, Hsien Ming Kao, J. C. Chiang, E. M. Woo

Department of Chemical Engineering

Research output: Contribution to journal › Article › peer-review

28 Citations (Scopus)

Abstract

The phase behavior and motional mobility in binary blends of polystyrene (PS) and poly(cyclohexyl methacrylate) (PCHMA) have been investigated by solid state ¹³C NMR techniques. The blend miscibility has been studied by examining the ¹H spin-relaxation times in the laboratory frame (T₁ ^H) and in the rotating frame (T_1ρ ^H) for the PCHMA/PS blends with various compositions and pure components. The T_1ρ ^H results show that PCHMA and PS are intimately mixed at the molecular level within the blends at all compositions. In addition, according to the results of carbon T_1ρ 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.

Original language	English
Pages (from-to)	171-176
Number of pages	6
Journal	polymer
Volume	43
Issue number	1
DOIs	https://doi.org/10.1016/S0032-3861(01)00570-5
Publication status	Published - 2001 Oct 12

All Science Journal Classification (ASJC) codes

Organic Chemistry
Polymers and Plastics
Materials Chemistry

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10.1016/S0032-3861(01)00570-5

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title = "Solid-state NMR studies on phase behavior and motional mobility in binary blends of polystyrene and poly(cyclohexyl methacrylate)",

abstract = "The phase behavior and motional mobility in binary blends of polystyrene (PS) and poly(cyclohexyl methacrylate) (PCHMA) have been investigated by solid state 13C NMR techniques. The blend miscibility has been studied by examining the 1H spin-relaxation times in the laboratory frame (T1 H) and in the rotating frame (T1ρ H) for the PCHMA/PS blends with various compositions and pure components. The T1ρ H results show that PCHMA and PS are intimately mixed at the molecular level within the blends at all compositions. In addition, according to the results of carbon T1ρ 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.",

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T1 - Solid-state NMR studies on phase behavior and motional mobility in binary blends of polystyrene and poly(cyclohexyl methacrylate)

AU - Wu, Ru Rong

AU - Kao, Hsien Ming

AU - Chiang, J. C.

AU - Woo, E. M.

PY - 2001/10/12

Y1 - 2001/10/12

N2 - The phase behavior and motional mobility in binary blends of polystyrene (PS) and poly(cyclohexyl methacrylate) (PCHMA) have been investigated by solid state 13C NMR techniques. The blend miscibility has been studied by examining the 1H spin-relaxation times in the laboratory frame (T1 H) and in the rotating frame (T1ρ H) for the PCHMA/PS blends with various compositions and pure components. The T1ρ H results show that PCHMA and PS are intimately mixed at the molecular level within the blends at all compositions. In addition, according to the results of carbon T1ρ 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.

AB - The phase behavior and motional mobility in binary blends of polystyrene (PS) and poly(cyclohexyl methacrylate) (PCHMA) have been investigated by solid state 13C NMR techniques. The blend miscibility has been studied by examining the 1H spin-relaxation times in the laboratory frame (T1 H) and in the rotating frame (T1ρ H) for the PCHMA/PS blends with various compositions and pure components. The T1ρ H results show that PCHMA and PS are intimately mixed at the molecular level within the blends at all compositions. In addition, according to the results of carbon T1ρ 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.

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Solid-state NMR studies on phase behavior and motional mobility in binary blends of polystyrene and poly(cyclohexyl methacrylate)

Abstract

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