{"title":"线性低密度聚乙烯的应变致密度波动。","authors":"Mizuki Kishimoto, Kazuki Mita, Hiroki Ogawa, Kazuki Shibasaki, Masato Arakawa, Mikihito Takenaka","doi":"10.1107/S1600576725002183","DOIUrl":null,"url":null,"abstract":"<p><p>In our previous study [Kishimoto <i>et al.</i> (2020). <i>Macromolecules</i>, <b>53</b>, 9097-9107], density fluctuations were induced on the submicrometre scale in polyethyl-ene (PE) during strain and led to the generation of voids. The strength of the induction was found to increase with the amplitude of the spatial inhomogeneity of the stress field. In this work, we investigated how comonomer species and content affect the behaviors of the strain-induced density fluctuations in linear low-density PE. We found that the strength of the induction decreased with an increase in the spatial homogeneity before stretching and the mechanical melting during strain and that the degree of spatial homogeneity and mechanical melting depend on the species and content of the comonomer.</p>","PeriodicalId":14950,"journal":{"name":"Journal of Applied Crystallography","volume":"58 Pt 3","pages":"879-885"},"PeriodicalIF":2.8000,"publicationDate":"2025-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12135982/pdf/","citationCount":"0","resultStr":"{\"title\":\"Strain-induced density fluctuations in linear low-density polyethyl-ene.\",\"authors\":\"Mizuki Kishimoto, Kazuki Mita, Hiroki Ogawa, Kazuki Shibasaki, Masato Arakawa, Mikihito Takenaka\",\"doi\":\"10.1107/S1600576725002183\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><p>In our previous study [Kishimoto <i>et al.</i> (2020). <i>Macromolecules</i>, <b>53</b>, 9097-9107], density fluctuations were induced on the submicrometre scale in polyethyl-ene (PE) during strain and led to the generation of voids. The strength of the induction was found to increase with the amplitude of the spatial inhomogeneity of the stress field. In this work, we investigated how comonomer species and content affect the behaviors of the strain-induced density fluctuations in linear low-density PE. We found that the strength of the induction decreased with an increase in the spatial homogeneity before stretching and the mechanical melting during strain and that the degree of spatial homogeneity and mechanical melting depend on the species and content of the comonomer.</p>\",\"PeriodicalId\":14950,\"journal\":{\"name\":\"Journal of Applied Crystallography\",\"volume\":\"58 Pt 3\",\"pages\":\"879-885\"},\"PeriodicalIF\":2.8000,\"publicationDate\":\"2025-04-04\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12135982/pdf/\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Applied Crystallography\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://doi.org/10.1107/S1600576725002183\",\"RegionNum\":3,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"2025/6/1 0:00:00\",\"PubModel\":\"eCollection\",\"JCR\":\"Q1\",\"JCRName\":\"Biochemistry, Genetics and Molecular Biology\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Applied Crystallography","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1107/S1600576725002183","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2025/6/1 0:00:00","PubModel":"eCollection","JCR":"Q1","JCRName":"Biochemistry, Genetics and Molecular Biology","Score":null,"Total":0}
引用次数: 0
摘要
在我们之前的研究中[Kishimoto et al.(2020)]。高分子，53,9097 -9107]，在应变过程中在亚微米尺度上诱导聚乙烯（PE）的密度波动并导致空洞的产生。感应强度随应力场空间不均匀性的幅度增大而增大。在这项工作中，我们研究了常见的种类和含量如何影响线性低密度聚乙烯的应变诱导密度波动行为。结果表明：拉伸前的空间均匀性和应变过程中的机械熔化程度随拉伸前的空间均匀性和应变过程中的机械熔化程度的增加而降低，且空间均匀性和机械熔化程度与共聚单体的种类和含量有关。
Strain-induced density fluctuations in linear low-density polyethyl-ene.
In our previous study [Kishimoto et al. (2020). Macromolecules, 53, 9097-9107], density fluctuations were induced on the submicrometre scale in polyethyl-ene (PE) during strain and led to the generation of voids. The strength of the induction was found to increase with the amplitude of the spatial inhomogeneity of the stress field. In this work, we investigated how comonomer species and content affect the behaviors of the strain-induced density fluctuations in linear low-density PE. We found that the strength of the induction decreased with an increase in the spatial homogeneity before stretching and the mechanical melting during strain and that the degree of spatial homogeneity and mechanical melting depend on the species and content of the comonomer.
期刊介绍：
Many research topics in condensed matter research, materials science and the life sciences make use of crystallographic methods to study crystalline and non-crystalline matter with neutrons, X-rays and electrons. Articles published in the Journal of Applied Crystallography focus on these methods and their use in identifying structural and diffusion-controlled phase transformations, structure-property relationships, structural changes of defects, interfaces and surfaces, etc. Developments of instrumentation and crystallographic apparatus, theory and interpretation, numerical analysis and other related subjects are also covered. The journal is the primary place where crystallographic computer program information is published.
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