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首页> 外文期刊>RSC Advances >A comparative study on the physico-chemical properties of sol-gel electrospun cobalt oxide nanofibres from two different polymeric binders
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A comparative study on the physico-chemical properties of sol-gel electrospun cobalt oxide nanofibres from two different polymeric binders

机译：两种不同聚合物粘合剂的溶胶-凝胶电纺氧化钴纳米纤维理化性质的比较研究

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In this study, two different sacrificial polymeric binders, namely poly(2-ethyl-2-oxazoline) (PEtOx) and poly(styrene-co-acrylonitrile) (SAN) along with cobalt acetate tetrahydrate (CATH), as the metal oxide precursor, were used for the fabrication of Co3O4 nanofibres through sol-gel electrospinning. It was observed that the degradation behaviour and physical properties of SAN and PEtOx influenced the structure, morphology and spectral properties of Co3O4 nanofibres, as the properties of the nanofibres obtained from the aforementioned systems were compared with each other. The grain size, shape and the activation energies for grain growth of Co3O4 nanofibres obtained from these two polymeric systems were different. This difference in grain size and shape caused a difference in the optical band gap energies and the magnetic properties of the Co3O4 nanofibres. This study reveals that one can tailor the characteristics of cobalt oxide nanofibres by an appropriate selection of polymeric binders for sol-gel electrospinning.
机译：在这项研究中，两种不同的牺牲性聚合物粘合剂，即聚（2-乙基-2-恶唑啉）（PEtOx）和聚（苯乙烯-丙烯腈）（SAN）以及四水合乙酸钴（CATH），作为金属氧化物前体用于溶胶-凝胶电纺丝法制备Co3O4纳米纤维。观察到SAN和PEtOx的降解行为和物理性质影响了Co 3 O 4纳米纤维的结构，形态和光谱性质，因为将从上述系统获得的纳米纤维的性质相互比较。从这两种聚合物系统获得的Co3O4纳米纤维的晶粒尺寸，形状和晶粒生长的活化能不同。晶粒尺寸和形状的这种差异导致了光学带隙能和Co3O4纳米纤维的磁性能的差异。这项研究表明，可以通过适当选择用于溶胶-凝胶电纺丝的聚合物粘合剂来定制氧化钴纳米纤维的特性。

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