Ball milling-assisted exfoliation and deposition to prepare few-layer graphene/PVC nanocomposites with enhanced thermal stability

IF 3.8 4区工程技术 Q2 CHEMISTRY, APPLIED

Journal of Vinyl & Additive Technology Pub Date : 2023-12-10 DOI:10.1002/vnl.22080

Jinyun Li, Jingwei Xu, Wenhua Chen, Chen Ma, Guohua Chen

{"title":"Ball milling-assisted exfoliation and deposition to prepare few-layer graphene/PVC nanocomposites with enhanced thermal stability","authors":"Jinyun Li, Jingwei Xu, Wenhua Chen, Chen Ma, Guohua Chen","doi":"10.1002/vnl.22080","DOIUrl":null,"url":null,"abstract":"<div>\n \n \n <section>\n \n <p>It is still a great challenge to prepare high-performance graphene/polymer nanocomposites by fully utilizing the large surface area, high tensile strength, and high thermal stability. Herein, a simple but efficient approach based on ball milling was developed to in situ exfoliate graphite into single-layer graphene and simultaneously deposit them onto polyvinyl chloride (PVC) surface. Graphene/PVC nanocomposites were prepared via the plasticized molding and followed by hot pressing. Resulting from incorporation of highly exfoliated and evenly distributed graphene nanosheets, the obtained graphene/PVC nanocomposites displayed a significantly enhanced thermal stability. In contrast with neat PVC, the temperature of maximum weight loss (<i>T</i><sub>max</sub>), glass transition temperature (<i>T</i><sub>g</sub>), and residual content of composite with 2.0 wt% graphene were increased by 10, 13°C, and 4.4%, respectively. Based on the deep analysis on heat releasing behavior and structure of residue, we proposed the related enhancing mechanism. Large-area and highly exfoliated graphene sheets effectively inhibited the heat/mass transfer in composite system and prevented the degradation of PVC, as well as promoted the compact residue formation from polymer itself at high temperatures. In short, this work provided an environmentally friendly strategy to prepare high-performance graphene/polymer nanocomposites with using low additive amount of single-layer graphene.</p>\n </section>\n \n <section>\n \n <h3> Highlights</h3>\n \n <div>\n <ul>\n \n <li>A simple graphite exfoliation method based on ball milling was proposed.</li>\n \n <li>Strong shearing and compact force induce graphene exfoliation and deposition.</li>\n \n <li>Graphene/PVC nanocomposites with enhanced thermal stability was prepared.</li>\n </ul>\n </div>\n </section>\n </div>","PeriodicalId":17662,"journal":{"name":"Journal of Vinyl & Additive Technology","volume":"30 3","pages":"715-726"},"PeriodicalIF":3.8000,"publicationDate":"2023-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Vinyl & Additive Technology","FirstCategoryId":"88","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/vnl.22080","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, APPLIED","Score":null,"Total":0}

引用次数: 0

Abstract

It is still a great challenge to prepare high-performance graphene/polymer nanocomposites by fully utilizing the large surface area, high tensile strength, and high thermal stability. Herein, a simple but efficient approach based on ball milling was developed to in situ exfoliate graphite into single-layer graphene and simultaneously deposit them onto polyvinyl chloride (PVC) surface. Graphene/PVC nanocomposites were prepared via the plasticized molding and followed by hot pressing. Resulting from incorporation of highly exfoliated and evenly distributed graphene nanosheets, the obtained graphene/PVC nanocomposites displayed a significantly enhanced thermal stability. In contrast with neat PVC, the temperature of maximum weight loss (T_max), glass transition temperature (T_g), and residual content of composite with 2.0 wt% graphene were increased by 10, 13°C, and 4.4%, respectively. Based on the deep analysis on heat releasing behavior and structure of residue, we proposed the related enhancing mechanism. Large-area and highly exfoliated graphene sheets effectively inhibited the heat/mass transfer in composite system and prevented the degradation of PVC, as well as promoted the compact residue formation from polymer itself at high temperatures. In short, this work provided an environmentally friendly strategy to prepare high-performance graphene/polymer nanocomposites with using low additive amount of single-layer graphene.

Highlights

A simple graphite exfoliation method based on ball milling was proposed.
Strong shearing and compact force induce graphene exfoliation and deposition.
Graphene/PVC nanocomposites with enhanced thermal stability was prepared.

Abstract Image

查看原文本刊更多论文

球磨辅助剥离和沉积制备热稳定性更强的几层石墨烯/PVC 纳米复合材料

充分利用大表面积、高抗拉强度和高热稳定性制备高性能石墨烯/聚合物纳米复合材料仍然是一个巨大的挑战。本文开发了一种基于球磨的简单而有效的方法，将石墨原位剥离成单层石墨烯，并同时将其沉积在聚氯乙烯(PVC)表面。采用塑化成型和热压法制备了石墨烯/聚氯乙烯纳米复合材料。由于加入了高度剥落和均匀分布的石墨烯纳米片，得到的石墨烯/PVC纳米复合材料显示出显著增强的热稳定性。与纯PVC相比，2.0 wt%石墨烯复合材料的最大失重温度(Tmax)、玻璃化转变温度(Tg)和残余含量分别提高了10℃、13℃和4.4%。在深入分析废渣放热行为和结构的基础上，提出了相应的强化机理。大面积和高度剥落的石墨烯片有效地抑制了复合体系中的传热传质，防止了PVC的降解，并促进了聚合物本身在高温下致密残留物的形成。简而言之，这项工作提供了一种环境友好的策略，可以使用低添加量的单层石墨烯制备高性能石墨烯/聚合物纳米复合材料。提出了一种基于球磨的石墨剥离方法。强烈的剪切力和紧致力导致石墨烯的剥落和沉积。制备了热稳定性增强的石墨烯/聚氯乙烯纳米复合材料。

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 Vinyl & Additive Technology 工程技术-材料科学：纺织

CiteScore

5.40

自引率

14.80%

发文量

审稿时长

>12 weeks

期刊介绍： Journal of Vinyl and Additive Technology is a peer-reviewed technical publication for new work in the fields of polymer modifiers and additives, vinyl polymers and selected review papers. Over half of all papers in JVAT are based on technology of additives and modifiers for all classes of polymers: thermoset polymers and both condensation and addition thermoplastics. Papers on vinyl technology include PVC additives.