| iPS－b－iPP共聚物对iPS／iPP共混物的性能和形态影响的研究 |
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| 引用本文： | 许光学,林尚安.iPS－b－iPP共聚物对iPS／iPP共混物的性能和形态影响的研究[J].高等学校化学学报,1994(12). |
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| 作者姓名： | 许光学 林尚安 |
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| 作者单位： | 中山大学高分子研究所 |
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| 摘 要： | 报道了苯乙烯－丙烯等规嵌段共聚物（ｉＰＳ－ｂ－ｉＰＰ）增溶作用及ｉＰＳ－ｂ－ｉＰＰ／ｉＰＳ／ｉＰＰ三组分共混体系微观形态和力学性能的研究结果。ｉＰＳ－ｂ－ｉＰＰ的加入明显地改善了ｉＰＳ／ｉＰＰ二组分共混物的力学性能;共聚物含量超过１５％时,三组分共混物的抗冲击强度超过ＮＩＰＳ的抗冲击强度,并具有较高的耐热性。ＳＥＭ结果表明,ｉＰＳ－ｂ－ｉＰＰ在ｉＰＳ／ｉＰＰ共混中起到了相分散和相间“偶联”作用,并降低了共混体系的微相尺寸和增加相间相互作用或粘附性。ｉＰＳ－ｂ－ｉＰＰ／ｉＰＳ／ｉＰＰ共混合金具有高的软化温度和刚性。
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| 关 键 词： | iPS／iPP共混 共混 增溶剂 苯乙烯－丙烯共聚物 |
Effect of iPS-b-iPP Copolymer on Properties and Morphology of iPS/iPP Blends |
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| XU Guang-Xue, LIN Shang-An.Effect of iPS-b-iPP Copolymer on Properties and Morphology of iPS/iPP Blends[J].Chemical Research In Chinese Universities,1994(12). |
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| Authors: | XU Guang-Xue LIN Shang-An |
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| Abstract: | The diblock copolymer of isotactic polystyrene and isotactic polypropylene (iPS-b-iPP)was very effective emulsifier for iPS/iPP blend. It was shown that the mechanical properties of iPS-b-iPP/iPS/iPP blend(i.e. lzod impact strength, ultimate elongation and tensile strength at break) dramatically enhanced with the increase of diblock copolymer content. As investigated by DMA and SEM, the characteristic temperature-modulus performance and observed morphology of iPS/iPP blend pair unambiguously supported the interfacial activity of iPS-b-iPP copolymer as both a dispersant and a "coupling agent". The phase size was significantly reduced, the interfacial adhesion was dramatically increased. |
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| Keywords: | iPS/iPP blend Blend Emulsifier Styrene-propylene copolymer |
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