Fausta Loffredo, Loredana Tammaro, Tiziana Di Luccio, Carmela Borriello, Fulvia Villani, Saverio De Vito, Karthik Ramachandran, Julia A. Kornfield
{"title":"Effect of tungsten disulfide nanotubes on crystallization of polylactide under uniaxial deformation and annealing","authors":"Fausta Loffredo, Loredana Tammaro, Tiziana Di Luccio, Carmela Borriello, Fulvia Villani, Saverio De Vito, Karthik Ramachandran, Julia A. Kornfield","doi":"10.1186/s42252-021-00016-2","DOIUrl":null,"url":null,"abstract":"<p>Tungsten disulfide (WS<sub>2</sub>) nanotubes (NTs) are examined here as a filler for polylactide (PLA) for their ability to accelerate PLA crystallization and for their promising biocompatibility in relevant to biomedical applications of PLA-WS<sub>2</sub> nanocomposites. In this work, we have studied the structural and thermal properties of PLA-WS<sub>2</sub> nanocomposite films varying the concentration of WS<sub>2</sub> NTs from 0 (neat PLA) to 0.6?wt%. The films were uniaxially drawn at 90?°C and annealed at the same temperature for 3 and 10?min. Using wide angle x-ray scattering, Raman spectroscopy and differential scanning calorimetry, we probed the effects of WS<sub>2</sub> NT addition on the structure of the PLA films at various stages of processing (unstretched, stretching, annealing). We found that 0.6?wt% of WS<sub>2</sub> induces the same level of crystallinity in as stretched PLA-WS<sub>2</sub> as annealing in neat PLA for 10?min. These data provide useful insights into the role of WS<sub>2</sub> NTs on the structural evolution of PLA-WS<sub>2</sub> composites under uniaxial deformation, and extend their applicability to situations where fine tuning of PLA crystallinity is desirable.</p>","PeriodicalId":576,"journal":{"name":"Functional Composite Materials","volume":"2 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2021-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1186/s42252-021-00016-2","citationCount":"7","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Functional Composite Materials","FirstCategoryId":"1","ListUrlMain":"https://link.springer.com/article/10.1186/s42252-021-00016-2","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 7
Abstract
Tungsten disulfide (WS2) nanotubes (NTs) are examined here as a filler for polylactide (PLA) for their ability to accelerate PLA crystallization and for their promising biocompatibility in relevant to biomedical applications of PLA-WS2 nanocomposites. In this work, we have studied the structural and thermal properties of PLA-WS2 nanocomposite films varying the concentration of WS2 NTs from 0 (neat PLA) to 0.6?wt%. The films were uniaxially drawn at 90?°C and annealed at the same temperature for 3 and 10?min. Using wide angle x-ray scattering, Raman spectroscopy and differential scanning calorimetry, we probed the effects of WS2 NT addition on the structure of the PLA films at various stages of processing (unstretched, stretching, annealing). We found that 0.6?wt% of WS2 induces the same level of crystallinity in as stretched PLA-WS2 as annealing in neat PLA for 10?min. These data provide useful insights into the role of WS2 NTs on the structural evolution of PLA-WS2 composites under uniaxial deformation, and extend their applicability to situations where fine tuning of PLA crystallinity is desirable.
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