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Pressure-induced crystallization of low density polyethylene on carbon nanotubes and carbon nanofibers

机译：低密度聚乙烯对碳纳米管和碳纳米纤维的压力诱导结晶

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摘要

In this study, low-density polyethylene (LDPE) crystalline structures produced via a solution-crystallization method on carbon nano-fillers were characterized. The nano-fillers used in this study are carbon nanotubes (CNTs) and carbon nanofibers (CNFs). CNTs and CNFs were used to act as a nucleating surface for polymer crystallization. In the case of CNTs, we obtained nanohybrid shish-kebab architecture by epitaxial crystallization. This is a unique way to bond polymer with nanofillers, in which the CNTs act as shish, while polymer act as kebabs. A pressure-induced crystallization approach was employed to investigate the effects of crystallization time and pressure on the CNFs/LDPE nanohybrid structure and percent crystallinity. The morphology of the nanohybrids was characterized by scanning electron microscopy (SEM), while differential scanning calorimetry (DSC) was used to quantify the amount of crystalline polymer. The LDPE crystals grown on CNTs had significant morphological differences from those grown on CNFs. The polymer crystals were found to periodically decorate the CNTs with a nanohybrid shish-kebab (NHSK) architecture, in which CNTs acts as a shish, while LDPE crystals were arranged as circular disks on the CNTs. POLYM. COMPOS., 39:192-200, 2018. (c) 2016 Society of Plastics Engineers
机译：在该研究中，表征了通过碳纳米填料上的溶液结晶法产生的低密度聚乙烯（LDPE）晶体结构。本研究中使用的纳米填料是碳纳米管（CNT）和碳纳米纤维（CNF）。 CNT和CNFS用于用作聚合物结晶的成核表面。在CNT的情况下，我们通过外延结晶获得了纳米羊氏烤肉架构。这是一种独特的方法来纳入聚合物与纳米填充物，其中CNT充当烤肉，而聚合物则作为烤肉串。使用压力诱导的结晶方法来研究结晶时间和压力对CNFS / LDPE纳米组合结构的影响和结晶度百分比。通过扫描电子显微镜（SEM）的表征纳米冬小麦的形态，而差示扫描量热法（DSC）用于量化晶体聚合物的量。在CNT上生长的LDPE晶体与CNF上生长的那些具有显着的形态学差异。发现聚合物晶体与纳米嗜含膜 - keab（NHSK）架构定期装饰CNT，其中CNT用作含锭，而LDPE晶体被布置为CNT上的圆盘。聚合物。 Compos。，39：192-200,2018。（c）2016年塑料工程师协会

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  • 来源
    《Polymer Composites》 |2018年第1期|共9页
  • 作者

    Depan Dilip; Hebert Brittany; Conlin Andrew; Chirdon William; Khattab Ahmed;

  • 作者单位

    Univ Louisiana Lafayette Inst Mat Res &

    Innovat Dept Chem Engn Lafayette LA 70504 USA;

    Univ Louisiana Lafayette Dept Mech Engn Lafayette LA 70504 USA;

    Univ Louisiana Lafayette Dept Mech Engn Lafayette LA 70504 USA;

    Univ Louisiana Lafayette Dept Chem Engn Lafayette LA 70504 USA;

    Univ Louisiana Lafayette Coll Engn Dept Ind Technol Lafayette LA 70504 USA;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 增强塑料、填充塑料;
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