Effect of Hexagonal Boron Nitride Nanoplatelet on Crystal Nucleation, Mechanical Behavior, and Thermal Stability of High‐Density Polyethylene‐Based Nanocomposites,Macromolecular Materials and Engineering

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Effect of Hexagonal Boron Nitride Nanoplatelet on Crystal Nucleation, Mechanical Behavior, and Thermal Stability of High‐Density Polyethylene‐Based Nanocomposites
Macromolecular Materials and Engineering ( IF 4.2 ) Pub Date : 2020-06-21 , DOI: 10.1002/mame.202000248
Ankur Chaurasia ₁ , Avinash Parashar ₁ , Rahul S. Mulik ₁

Affiliation

Hexagonal boron nitride nanoplatelets (BNNP) significantly enhance the mechanical and thermal properties of high‐density polyethylene. In order to ensure superior dispersibility of BNNP, two different techniques, colloidal solution, and solvent blending, are used for fabricating nanocomposites. Compared to solvent blending, the colloidal solution‐based fabrication technique has superior dispersion capabilities for nanofillers in the PE matrix, which helps in improving the thermal stability and crystallinity in synthesized nanocomposites. A significant increase in the rate of crystallization of polyethylene (PE) is reported at 1% weight fraction of BNNP, which further increases with the increase in weight percentage of BNNP. BNNP acts as a new source of nucleating sites for crystallization in PE that also reduces the size of secondary structures spherulites. Enhanced tensile strength and Young’s modulus of BNNP/PE nanocomposites are reported with the increase in weight contribution of BNNP in the range of 1% to 5%.

中文翻译：

六方氮化硼纳米片对高密度聚乙烯基纳米复合材料的晶体成核，力学行为和热稳定性的影响

六方氮化硼纳米片（BNNP）显着增强了高密度聚乙烯的机械和热性能。为了确保BNNP的优异分散性，胶体溶液和溶剂共混这两种不同的技术被用于制造纳米复合材料。与溶剂共混相比，基于胶体溶液的制造技术对PE基质中的纳米填料具有出色的分散能力，这有助于改善合成纳米复合材料的热稳定性和结晶度。据报道，在BNNP的重量百分比为1％的情况下，聚乙烯（PE）的结晶速率显着增加，并且随着BNNP重量百分比的增加而进一步增加。BNNP充当了PE中结晶晶核位点的新来源，也减少了二级结构球晶的尺寸。据报道，随着BNNP的重量贡献增加1％至5％，BNNP / PE纳米复合材料的拉伸强度和杨氏模量提高。

更新日期：2020-07-16

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