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首页> 外文会议>International symposium on polymer physics >FURTHER INVESTIGATION IN BANDED SPHERULITES OF POLY(ETHYLENE ADIPATE) AND POLY(BUTYLENE SUCCINATE) IN POLY(BUTYLENE SUCCINATE) / POLY(ETHYLENE ADIPATE) BLENDS
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FURTHER INVESTIGATION IN BANDED SPHERULITES OF POLY(ETHYLENE ADIPATE) AND POLY(BUTYLENE SUCCINATE) IN POLY(BUTYLENE SUCCINATE) / POLY(ETHYLENE ADIPATE) BLENDS

机译：聚（乙烯己二酸乙酯）和聚（丁二酸丁二酸丁酯）/聚（乙烯己二酸酯）共混物的聚（乙烯酸丁酸酯）和聚（丁烯琥珀酸）的进一步研究

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@@Banded structure in spherulites examined in a polarizing microscope has been extensively studied during the half past century and several views on this point have been made 1-3 though some of them may not be widely accepted. In addition, it's of great scientific and technical interest that linear aliphatic polyesters which usually exhibit alternate bright and dark bands on appropriate conditions due to their biodegradability and can be used as environmental-friendly materials. In this work, we select poly(ethylene adipate) (PEA) and poly(butylenes succinate) (PBS) as model polymers to study the forming mechanism and the height distribution on the spherulites surface of the concentric rings with brightness alter periodically under polarizing optical microscope (POM) when crystallized from melt by real-space techniques means POM and AFM. For neat PEA, we found the PEA banded spherulite is made up of the alternate array of flaton lamellar and edge-on lamellar along radiating direction of spherulite which indicate the forming mechanism is lamellar twisting. To the best of our knowledge, this is the first time we observe the twisting lamellar in PEA banded spherulite by AFM and when compared the AFM images with POM results, it has been clear that bright ringed ribbons of banded spherulites under polarized light are composed of flat-on lamellar while the dark ribbons are comeposed of edge-on lamellar. Fig. 1 shows the height image which got from the cross region of PEA banded spherulite and it can be seen that edge-on lamellar constitute the ridge part and flat-on lamellar constitute the valley part of the banded spherulite. This is quite different from the common cases of banded spherulites of which the forming mechanism is lamellar twisting and the ridge is usually composed of edge-on lamellar. 4-6 We suggest this is probably due to the flat-on lamellar tilting depart from the substrate and aggregation (Fig. 2).
机译：在偏振显微镜中检查的球晶中的带状结构在半个世纪半的时间里被广泛研究，并且在这一点上的几个看法已经1-3，尽管其中一些可能不会被广泛接受。此外，它具有巨大的科学和技术兴趣，线性脂族聚酯由于其生物降解性而在适当的条件下在适当的条件下表现出交替的明亮和暗带，并且可以用作环保材料。在这项工作中，我们选择聚（乙烯己二酸酯）（豌豆）和聚（丁烯琥珀酸盐）（PBS）作为模型聚合物，以研究形成机构和在偏光光学下周期性地改变同心环的球晶表面上的高度分布通过现实空间技术从熔体结晶时显微镜（POM）意味着POM和AFM。对于漂亮的豌豆，我们发现豌豆带状球晶系在沿着球晶的辐射方向，由散热方向构成扁平的扁平板状玻璃状玻璃状层，表示成形机构是板状扭转。据我们所知，这是我们第一次通过AFM观察豌豆带状球杆菌中的扭转层状，并且当用POM结果比较了AFM图像时，已经清楚地偏振光下的带状球菌的亮振丝带组成平面上的板状，而黑色丝带是由边缘层状的。图。图1示出了从豌豆带状球岩的横向区域得到的高度图像，可以看出，边缘层叠板构成脊部和平坦的薄片构成带状球晶的谷部分。这与一个带状球素的常见情况有很大差异，其中形成机构是层状捻线，并且脊通常由边缘层叠板组成。 4-6我们建议这可能是由于围绕底板倾斜偏离基板和聚集（图2）。

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