선택한 단어 수는 입니다.
최소 단어 이상 선택하여야 합니다.
최소 단어 이상 선택하여야 합니다.
선택한 단어 수는 30입니다.
최대 10 단어까지만 선택 가능합니다.
최대 10 단어까지만 선택 가능합니다.
제안 방법
- The control solution was prepared by dissolving 20 mg of eraser sample (PVC with DOP) in 1 mL tetrahydrofuran-d8. All NMR experiments were performed at 298 K on a Bruker Avance 600 spectrometer equipped with a Bruker 5mm micro-imaging PFG probe and a strong gradient amplifier, which provides a z-direction gradient strength of up to 200 G/cm. The temperature was maintained constant within ±0.
- 5). The DOSY processing program as implemented in the xwinnmr was used to calculate the diffusion coefficients and to create two-dimensional spectra with NMR chemical shifts along one dimension and the calculated diffusion coefficients along the other.
대상 데이터
- This polymer has hardness equivalent to ~50 part per hundred resins (phr) plasticizer can be obtained, and was synthesized by grafting vinyl chloride onto EVA copolymer. For a mixture sample, a commercial PVC (LG Chem, Korea, Mw = 83000, Mw/Mn = 2.1) polymer and EVA copolymer (Sumitomo, Japan, Mw = 49000, M시Mn = 3.4) were used. A soft PVC eraser with ~40 phr dioctylphthalate (DOP) as a plasticizer was used for a control experiment to separate the additive signals from the PVC peaks.
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