Fabrication and Solidification Kinetics of Thin Polyethylene Films via Thermally-Induced Phase Separation (TIPS) with Well-Controlled Thickness

IF 3.9 3区化学 Q2 POLYMER SCIENCE

Journal of Inorganic and Organometallic Polymers and Materials Pub Date : 2024-08-06 DOI:10.1007/s10904-024-03290-2

Ting Zhang, Yaoyang Chen, Bin Yang, Xiaohong Wang, Zhengzhi Zheng, Jinpu Wu, Tianyu Lu, Jiaojiao Sang, Shijun Kang, Weiqiang Hu, Weiguo Zhang, Yuchao Ke

{"title":"Fabrication and Solidification Kinetics of Thin Polyethylene Films via Thermally-Induced Phase Separation (TIPS) with Well-Controlled Thickness","authors":"Ting Zhang, Yaoyang Chen, Bin Yang, Xiaohong Wang, Zhengzhi Zheng, Jinpu Wu, Tianyu Lu, Jiaojiao Sang, Shijun Kang, Weiqiang Hu, Weiguo Zhang, Yuchao Ke","doi":"10.1007/s10904-024-03290-2","DOIUrl":null,"url":null,"abstract":"<div>In the realm of battery separator membranes, polyethylene microporous membranes hold significant promise due to their high density, robust mechanical properties, and eco-friendliness. Thermally-induced phase separation (TIPS) stands out as a crucial technique for fabricating polyolefin microporous membranes. Existing research has predominantly focused on leveraging TIPS technology to enhance the electrochemical performance of such membranes, overlooking a comprehensive grasp of the film formation process within TIPS. This study delves into the detailed TIPS film formation process of a high-density polyethylene (HDPE)/dioctyl phthalate (DOP) film-forming system. Based on experimental findings, there existed a discernible relationship among the blade coating thickness (δs), HDPE mass fraction (ωH), and final film thickness (δf). When δs is determined, δf exhibits an initial increase followed by a subsequent decrease as ωH increases. Infrared thermal imaging (ITI) technology was employed to in-situ track the location of phase interface in the HDPE/DOP system, revealing that heightened film scraping thickness and increased HDPE content jointly led to a gradual deceleration in the system’s cooling rate. The utilization of a four-parameter model (FPM) to fit the cooling curves of the HDPE/DOP melt blend under 20 °C quenching in air conditions displayed an exceptional degree of conformity (with all regression coefficients exceeding 0.99). Parameter D in FPM was influenced not only by the polymer property but also by ωH and δf, and our findings revealed that with ωH set at 30% and δs at 200 μm, parameter D approached a value of 4. The present work advances the current comprehension of the formation process of HDPE TIPS films and furnishes pivotal insights for optimizing the thermodynamics and process variables essential for solidification of HDPE TIPS films in practical applications.</div>","PeriodicalId":639,"journal":{"name":"Journal of Inorganic and Organometallic Polymers and Materials","volume":"35 1","pages":"518 - 526"},"PeriodicalIF":3.9000,"publicationDate":"2024-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Inorganic and Organometallic Polymers and Materials","FirstCategoryId":"92","ListUrlMain":"https://link.springer.com/article/10.1007/s10904-024-03290-2","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"POLYMER SCIENCE","Score":null,"Total":0}

引用次数: 0

Abstract

In the realm of battery separator membranes, polyethylene microporous membranes hold significant promise due to their high density, robust mechanical properties, and eco-friendliness. Thermally-induced phase separation (TIPS) stands out as a crucial technique for fabricating polyolefin microporous membranes. Existing research has predominantly focused on leveraging TIPS technology to enhance the electrochemical performance of such membranes, overlooking a comprehensive grasp of the film formation process within TIPS. This study delves into the detailed TIPS film formation process of a high-density polyethylene (HDPE)/dioctyl phthalate (DOP) film-forming system. Based on experimental findings, there existed a discernible relationship among the blade coating thickness (δ_s), HDPE mass fraction (ω_H), and final film thickness (δ_f). When δ_s is determined, δ_f exhibits an initial increase followed by a subsequent decrease as ω_H increases. Infrared thermal imaging (ITI) technology was employed to in-situ track the location of phase interface in the HDPE/DOP system, revealing that heightened film scraping thickness and increased HDPE content jointly led to a gradual deceleration in the system’s cooling rate. The utilization of a four-parameter model (FPM) to fit the cooling curves of the HDPE/DOP melt blend under 20 °C quenching in air conditions displayed an exceptional degree of conformity (with all regression coefficients exceeding 0.99). Parameter D in FPM was influenced not only by the polymer property but also by ω_H and δ_f, and our findings revealed that with ω_H set at 30% and δ_s at 200 μm, parameter D approached a value of 4. The present work advances the current comprehension of the formation process of HDPE TIPS films and furnishes pivotal insights for optimizing the thermodynamics and process variables essential for solidification of HDPE TIPS films in practical applications.

Abstract Image

查看原文本刊更多论文

通过热诱导相分离 (TIPS) 制作厚度可控的聚乙烯薄膜及其凝固动力学

在电池隔膜领域，聚乙烯微孔膜因其高密度、坚固的机械性能和环保性而大有可为。热诱导相分离（TIPS）是制造聚烯烃微孔膜的关键技术。现有的研究主要集中在利用 TIPS 技术提高此类膜的电化学性能，而忽略了对 TIPS 内膜形成过程的全面掌握。本研究详细探讨了高密度聚乙烯（HDPE）/邻苯二甲酸二辛酯（DOP）成膜体系的 TIPS 成膜过程。根据实验结果，叶片涂层厚度（δs）、高密度聚乙烯质量分数（ωH）和最终薄膜厚度（δf）之间存在着明显的关系。当 δs 确定后，δf 会随着 ωH 的增大而先增大后减小。利用红外热成像（ITI）技术对 HDPE/DOP 系统中的相界面位置进行了现场跟踪，结果表明，刮膜厚度的增加和 HDPE 含量的增加共同导致了系统冷却速度的逐渐减慢。在 20 °C 空气淬火条件下，利用四参数模型（FPM）拟合 HDPE/DOP 熔体混合物的冷却曲线，显示出极好的一致性（所有回归系数均超过 0.99）。FPM 中的参数 D 不仅受聚合物特性的影响，还受到 ωH 和 δf 的影响，我们的研究结果表明，当 ωH 设为 30% 和 δs 设为 200 μm 时，参数 D 值接近 4。本研究工作推进了目前对 HDPE TIPS 薄膜形成过程的理解，并为优化实际应用中 HDPE TIPS 薄膜凝固所必需的热力学和过程变量提供了重要见解。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Journal of Inorganic and Organometallic Polymers and Materials 化学-高分子科学

CiteScore

8.30

自引率

7.50%

发文量

335

审稿时长

1.8 months

期刊介绍： Journal of Inorganic and Organometallic Polymers and Materials [JIOP or JIOPM] is a comprehensive resource for reports on the latest theoretical and experimental research. This bimonthly journal encompasses a broad range of synthetic and natural substances which contain main group, transition, and inner transition elements. The publication includes fully peer-reviewed original papers and shorter communications, as well as topical review papers that address the synthesis, characterization, evaluation, and phenomena of inorganic and organometallic polymers, materials, and supramolecular systems.