Bulletin of the Korean Chemical Society

  • 제21권1호
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  • Pages.69-74
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  • 2000
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  • 0253-2964(pISSN)
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  • 1229-5949(eISSN)
대한화학회 (Korean Chemical Society)
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Capability of Thermal Field-Flow Fractionation for Analysis of Processed Natural Rubber

  • 발행 : 20000100
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초록

Applicability of Thermal field flow fractionation (ThFFF) was investigated for the analysis of masticated natural rubber (NR) adhesives produced bya hot melt mastication process. An optimum ThFFF condition for NR analysis was found by using tetrahydrofuran (THF) as a solvent/carrier and a field-programming. Low flowrate (0.3 mL/min) was used to avoid stopping the flow for the sample relaxation. Measured molecular weight distribution was used to monitor degradation of rubber during the mastication process. Rubber samples collected at three different stages of the mastication process and were analyzed by ThFFF. It was found that in an anaerobic process rubber degradation occurs at the resin-mixing (compounding) zone as well as in the initial break-down zone, while in an aerobic process most of degradation occurs at the initial breakdown zone. It was also found that E-beam radiation on NR causes a slight increase in the NR molecular weight due to the formation of a branched structure.

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참고문헌

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피인용 문헌

  1. Repeatability and reproducibility of thermal field-flow fractionation in molecular weight determination of processed natural rubber vol.131, pp.3, 2000, https://doi.org/10.1039/b513773j
  2. An overview on field-flow fractionation techniques and their applications in the separation and characterization of polymers vol.34, pp.4, 2000, https://doi.org/10.1016/j.progpolymsci.2008.11.001
  3. Thermal field-flow fractionation and multiangle light scattering of polyvinyl acetate with broad polydispersity and ultrahigh molecular weight microgel components vol.1217, pp.10, 2000, https://doi.org/10.1016/j.chroma.2010.01.035
  4. Advanced fractionation methods for the microstructure analysis of complex polymers vol.26, pp.7, 2000, https://doi.org/10.1002/pat.3479