Field‐induced dipole reorientation and piezoelectricity in heavily plasticized nylon 11 films
Field‐induced dipole reorientation and piezoelectricity in heavily plasticized nylon 11 films
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重塑化尼龙 11 薄膜中的场致偶极子重新取向和压电性
DOI：
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发表时间：
1986
期刊：
影响因子：
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通讯作者：
B. Newman
中科院分区：
文献类型：
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作者：
J. Scheinbeim;S. Mathur;B. Newman
摘要：通过将尼龙 11 在 150℃ 下溶解在 2-乙基 1,3 己油中，制备了初始结晶度非常低的尼龙 11 薄膜。从溶液中流延薄膜，并在真空烘箱中除去过量的增塑剂。然后对薄膜进行熔压和淬火，得到含有 30% 重量增塑剂的高度增塑尼龙 11 薄膜。这些薄膜在真空下极化，使增塑剂在电场存在下蒸发。当样品含有大量增塑剂时，在最大电场作用下的薄膜观察到高压响应。观察到结晶度的显着发展，但没有明显的微晶取向指示。这些研究表明，观察到的压电响应主要源自尼龙 11 非晶区域中的定向氢键。
Abstract : Nylon 11 films with very low initial crystallinity were made by dissolving the nylon 11 in 2-Ethyl 1,3 Hexanedoil at 150 C. Films were cast from the solution and excessive plasticizer was removed in a vacuum oven. Films were then melt-pressed and quenched to yield heavily plasticized nylon 11 films containing 30% by weight of the plasticizer. These films were poled under vacuum to allow the plasticizer to evaporate in the presence of an electric field. A high piezoelectric response was observed for the films subjected to the maximum electric field while the sample contained a large fraction of plasticizer. Significant development of crystallinity was observed without apparent indication of orientation of the crystallites. These studies suggest that the observed piezoelectric response originates primarily from oriented hydrogen bonds in the amorphous regions of Nylon 11.