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首页> 外文期刊>Journal of Applied Polymer Science >STUDIES ON MISCIBILITY OF POLY(VINYL CHLORIDE) WITH NATURAL RUBBER-GRAFT-POLYACRYLONITRILE AND NATURAL RUBBER-GRAFT-POLY(METHYL METHACRYLATE)
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STUDIES ON MISCIBILITY OF POLY(VINYL CHLORIDE) WITH NATURAL RUBBER-GRAFT-POLYACRYLONITRILE AND NATURAL RUBBER-GRAFT-POLY(METHYL METHACRYLATE)

机译：天然橡胶接枝聚丙烯和甲基丙烯酸甲酯对聚氯乙烯的混溶性研究

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摘要

The miscibility of poly(vinyl chloride)atural rubber-graft-polyacrylonitrile (PVC/NRPACN) and PVC/NR-graft-poly(methyl methacrylate) (PMMA) were studied by differential scanning calorimetry (DSC) and viscometry. DSC curves of PVC/NR graft copolymer blends showed a major endotherm at about 265 degrees C that was assigned to the thermal decomposition of PVC. PVC/NRPMMA blends showed a minor endothermic peak at about 124 degrees C and the PVC/NRPACN blends showed a broad peak (which develops into two peaks) at about 160 degrees-180 degrees C, respectively. Absolute viscosity versus weight percent PVC plots of the two sets of blends were nonlinear. X-ray diffraction patterns of the PVC/NRPACN blends showed overlapping spacings due to the constituent polymers. Phase-contrast micrographs of the PVC/NRPACN blends showed gross phase discontinuity. The heats of mixing solutions of PVC blended with NRPMMA were found to be well above the upper limit of miscibility. (C) 1996 John Wiley & Sons, Inc. [References: 13]
机译：通过差示扫描量热法（DSC）和粘度法研究了聚氯乙烯/天然橡胶接枝聚丙烯腈（PVC / NRPACN）和PVC / NR-接枝聚甲基丙烯酸甲酯（PMMA）的混溶性。 PVC / NR接枝共聚物共混物的DSC曲线显示，在约265摄氏度时有一个主要的吸热峰，这归因于PVC的热分解。 PVC / NRPMMA共混物在约124摄氏度时显示出一个较小的吸热峰，而PVC / NRPACN共混物在约160度至180摄氏度时显示出一个宽峰（发展为两个峰）。两组共混物的绝对粘度对重量百分数的PVC图是非线性的。由于构成聚合物，PVC / NRPACN共混物的X射线衍射图显示出重叠的间距。 PVC / NRPACN共混物的相差显微照片显示总相不连续。发现PVC与NRPMMA共混的混合溶液的热远高于混溶性上限。 （C）1996 John Wiley＆Sons，Inc. [参考：13]

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