Rheo-optical Near-infrared (NIR) Analysis of Binary Amorphous Polymer Blend Consisting of Polyvinyl Chloride (PVC) and Polymethyl Methacrylate (PMMA)
Rheo-optical Near-infrared (NIR) Analysis of Binary Amorphous Polymer Blend Consisting of Polyvinyl Chloride (PVC) and Polymethyl Methacrylate (PMMA)
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DOI：
10.2116/analsci.21p004
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发表时间：
2021-09-01
影响因子：
1.6
通讯作者：
Shinzawa, Hideyuki
中科院分区：
文献类型：
--
作者：
Koga, Maito;Watanabe, Ryota;Shinzawa, Hideyuki
采用基于近红外光谱仪和拉伸试验机相结合的流变光学表征技术，研究了聚氯乙烯（PVC）和聚甲基丙烯酸甲酯（PMMA）二元非晶态聚合物共混物。在流变光学近红外光谱中，拉伸变形被施加到聚合物上以诱导分子链的位移，同时被近红外光探测。该技术的应用扩展到部分混溶的无定形聚合物共混物组成的PVC和PMMA，以证明它可以被用来检测微妙的，但重要的变形行为。在近红外光谱特征的变化表明，共混物的初始变形诱导的PVC链的重新取向。在PVC变形期间，标记了与PVC连接的PMMA部分。样品的进一步变形最终导致颈缩扩展到周围区域。
A binary amorphous polymer blend consisting of polyvinyl chloride (PVC) and polymethyl methacrylate (PMMA) was studied with a rheo-optical characterization technique based on the combination of a near-infrared (NIR) spectrometer and a tensile testing machine. In rheo-optical NIR spectroscopy, tensile deformations were applied to polymers to induce the displacement of molecular chains while being probed by NIR light. The application of this technique was extended to a partially miscible amorphous polymer blend consisting of PVC and PMMA to demonstrate how it can be utilized to detect subtle but important deformation behavior. A change in the NIR spectral feature revealed that the initial deformation of the blend induces the reorientation of the PVC chains. A part of the PMMA connected to the PVC was tagged during the PVC deformation. Further deformation of the sample eventually resulted in necking propagation to the surrounding area.