通过偏光显微镜(POM)、动态力学分析(DMA)、差示扫描量热(DSC)和扫描电镜(SEM)对等规聚丙烯/聚乙丁烯(iPP/EBR)合金的结晶和相形态进行了研究.结果表明,iPP和EBR在合金中是分别结晶的,组分EBR嵌入了iPP球晶;当EBR含量小于50%(质量分数,下同)时,合金中本体相iPP和分散相EBR处于相分离状态;而当EBR含量达到50%后,合金中还有EBR/iPP共存相.文中还提出了舍金的相结构模型.
The investigation of the crystallization of isotactic polypropylene/poly(ethylene-butene) (iPP/EBR) binary blends with polarized optical microscopy (POM) and differential scanning calorimetry (DSC) showed that iPP and EBR crystallize separately in the blends and iPP crystalline spherulites are embedded by component EBR in the blends. The investigation of the phase morphology with dynamic mechanical analysis (DMA) and scanning electron microscope (SEM) demonstrated that when EBR content is less than 50%, there are only two separate phases in iPP/EBR blends: iPP matrix and EBR dispersed phase; when EBR content was higher than 50%, iPP and EBR exhibit some extent of miscibility, and an additional phase (iPP/EBR coexist phase) exists in the blends. Based on the results above, the phase structure model of iPP/EBR blends was proposed.
参考文献
| [1] | Yuechun Ma;J.P.S.Farinha;Mitschell A.Winnik;Phillip V.Yaneff;Rose A.Ryntz .Compatibility of Chlorinated Polyolefin with the Components of Thermoplastic Polyolefin:A Study by Laser Scanning Confocal Fluorescence Microscopy[J].Macromolecules,2004(17):6544-6552. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%