用普通熔融共混与低剪切应力场下聚合物/纳米粒子的分散共混方法制备出聚丙烯/无机纳米粒子复合材料,采用示差扫描量热法(DSC)与偏光显微镜(PFM)对试样的结晶行为进行研究发现:在填充粒子含量相同情况下,均匀分散的纳米粒子可以较大提高聚丙烯的结晶温度,结晶速率,使晶体尺寸减小,而普通熔融共混制备的试样中,纳米粒子虽然也一定程度增加了聚合物的结晶温度,却并不改变晶体的尺寸.结果表明,当制备聚合物/纳米粒子复合材料时,纳米粒子在基体中的分散程度极大地影响聚合物基体的结晶行为.
参考文献
| [1] | Zhang Q X;Yua Z Z;Xie X L et al.[J].Polymer,2004,45:5985. |
| [2] | Lin ZD;Qiu YX;Mai KC .Crystallization and melt behavior of Mg(OH)(2)/PP composites modified by functionalized polypropylene[J].Journal of Applied Polymer Science,2004(6):3610-3621. |
| [3] | Lin Z D;Huang Z Z;Zhang Y et al.[J].Journal of Applied Polymer Science,2004,91:2443. |
| [4] | Papageorgiou GZ;Achilias DS;Bikiaris DN;Karayannidis GP .Crystallization kinetics and nucleation activity of filler in polypropylene/surface-treated SiO2 nanocomposites[J].Thermochimica Acta: An International Journal Concerned with the Broader Aspects of Thermochemistry and Its Applications to Chemical Problems,2005(1/2):117-128. |
| [5] | 于润泽;刘正英;杨鸣波.[J].高分子学报 |
| [6] | Gupta A K;Purwar S N .[J].Journal of Applied Polymer Science,1984,29:1595. |
| [7] | Ebengou R H .[J].Journal of Polymer Science Part B:Polymer Physics,1997,35:1333. |
| [8] | 杨伟,史炜,谢邦互,李忠明,冯建民,杨鸣波.玻璃微珠改性聚丙烯的熔融、结晶与形态[J].高分子材料科学与工程,2005(02):249-252. |
| [9] | Yin B;Yang W;Yu Q S et al.[J].Polymer Engineering and Science,2004,44:1656. |
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