{"title":"Melt memory effect of isotactic polypropylene/graphene composite","authors":"Jingru Liu, Xun Huang","doi":"10.1007/s10965-025-04496-9","DOIUrl":null,"url":null,"abstract":"<div><p>In this work, the influence of liquid-phase exfoliated graphene (G) on the melt memory effect of isotactic polypropylene (iPP) was investigated. The nucleation ability of both the melt ordered structure and graphene for iPP crystallization was examined for comparison. The results indicated that liquid-phase exfoliated graphene has excellent heterogeneous nucleation ability. With the addition of only 0.5 wt.% graphene, the crystallization peak temperature of iPP is increased by 11.3 °C. However, in contrast to graphene, melt ordered structure demonstrates more significant nucleation ability. The introduction of graphene brings about weakened melt memory effect of iPP, as evidenced by the diminished temperature width of Domain II for the composite. These findings are consistent with the results obtained from the nonisothermal crystallization kinetics. Dynamic rheology and in-situ Fourier transform infrared spectroscopy measurements revealed that depressed thermal stability of ordered structure caused by the presence of graphene is responsible for weakened melt memory effect of iPP.</p></div>","PeriodicalId":658,"journal":{"name":"Journal of Polymer Research","volume":"32 8","pages":""},"PeriodicalIF":2.8000,"publicationDate":"2025-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Polymer Research","FirstCategoryId":"92","ListUrlMain":"https://link.springer.com/article/10.1007/s10965-025-04496-9","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"POLYMER SCIENCE","Score":null,"Total":0}
引用次数: 0
Abstract
In this work, the influence of liquid-phase exfoliated graphene (G) on the melt memory effect of isotactic polypropylene (iPP) was investigated. The nucleation ability of both the melt ordered structure and graphene for iPP crystallization was examined for comparison. The results indicated that liquid-phase exfoliated graphene has excellent heterogeneous nucleation ability. With the addition of only 0.5 wt.% graphene, the crystallization peak temperature of iPP is increased by 11.3 °C. However, in contrast to graphene, melt ordered structure demonstrates more significant nucleation ability. The introduction of graphene brings about weakened melt memory effect of iPP, as evidenced by the diminished temperature width of Domain II for the composite. These findings are consistent with the results obtained from the nonisothermal crystallization kinetics. Dynamic rheology and in-situ Fourier transform infrared spectroscopy measurements revealed that depressed thermal stability of ordered structure caused by the presence of graphene is responsible for weakened melt memory effect of iPP.
期刊介绍：
Journal of Polymer Research provides a forum for the prompt publication of articles concerning the fundamental and applied research of polymers. Its great feature lies in the diversity of content which it encompasses, drawing together results from all aspects of polymer science and technology.
As polymer research is rapidly growing around the globe, the aim of this journal is to establish itself as a significant information tool not only for the international polymer researchers in academia but also for those working in industry. The scope of the journal covers a wide range of the highly interdisciplinary field of polymer science and technology, including:
polymer synthesis;
polymer reactions;
polymerization kinetics;
polymer physics;
morphology;
structure-property relationships;
polymer analysis and characterization;
physical and mechanical properties;
electrical and optical properties;
polymer processing and rheology;
application of polymers;
supramolecular science of polymers;
polymer composites.
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