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Crystallization behavior of polylactide matrix under the influence of nano‐magnetite
Author(s) -
Gong Xinghou,
Cheng Cheng,
Tang Chak Yin,
Law WingCheung,
Lin Xueting,
Chen Yehuang,
Chen Ling,
Tsui Gary Chi Pong,
Rao Nanxi
Publication year - 2019
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.24976
Subject(s) - materials science , crystallization , thermogravimetric analysis , nucleation , nanocomposite , thermal stability , differential scanning calorimetry , magnetite , chemical engineering , composite number , superparamagnetism , fourier transform infrared spectroscopy , composite material , magnetization , metallurgy , organic chemistry , magnetic field , chemistry , thermodynamics , physics , quantum mechanics , engineering
Iron oxide nanoparticle (Fe 3 O 4 ) has gained remarkable research interest for various applications, from environmental to biological, because of its superparamagnetic properties and good biocompatibility. In this work, the nucleation effect of Fe 3 O 4 in a polylactide (PLA) matrix under an influence of an alternating magnetic field was studied. The nanocomposite films that is, containing different concentrations of Fe 3 O 4 (~8 nm) which were uniformly dispersed in the PLA matrix, were prepared via a solution casting method. The amplitude and frequency of the magnetic field impose great effects on the morphology and nucleation rate of PLA crystallization. Thermogravimetric analysis was used to study the thermal stability of Fe 3 O 4 /PLA and it showed that the thermal stability of Fe 3 O 4 /PLA was affected by the Fe 3 O 4 content. Fourier transform infrared spectroscopy and X‐ray diffractometry indicated that Fe 3 O 4 shows impeding effect to the crystallization of PLA. Based on the differential scanning calorimetry results, composite with 1% of Fe 3 O 4 content could promote the crystallization of PLA but it would become an obstacle when 3% of Fe 3 O 4 was added. The result of polarized optical microscopy also showed a good agreement that the incorporation of Fe 3 O 4 could act as an effective nucleation regent to the composite film. POLYM. ENG. SCI., 59:608–615, 2019. © 2018 Society of Plastics Engineers