【摘 要】
：
Polypropylene(PP)/MgAl layered double hydroxide(MgAl LDH) nanocomposites were synthesized by refluxing PP and dodecyl sulfate-intercalated MgAl LDH[MgAI(DS)]in
【机 构】
：
State Key Laboratory of Fire Science
论文部分内容阅读
Polypropylene(PP)/MgAl layered double hydroxide(MgAl LDH) nanocomposites were synthesized by refluxing PP and dodecyl sulfate-intercalated MgAl LDH[MgAI(DS)]in non-polar xylene.Their structure,thermal and crystallization properties were studied via X-ray diffraction(XRD),transmission electron microscopy(TEM),thermogravimetric analysis(TGA),differential scanning calorimetry(DSC),and polarized light microscopy(PLM).The nanoscaled dispersion of MgAl(DS) nanolayeres in the PP matrix was verified by the disappearance of the 在_(003) XRD diffraction peak of MgAl(DS) and observation of TEM image.The DSC data show that the SDS/LDH inorganic components negatively affect the crystallization properties of PP and decrease the size of PP spherulites because the inorganic components act as additional nuclei.The PP/MgAl LDH nanocomposites have a faster charring progress in a temperature range of 250-430℃ and a better thermal stability above 320℃ than pure PP.
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