Crystallization behavior of polylactide matrix under the influence of nano-magnetite

Xinghou Gong, Cheng Cheng, Chak Yin Tang, Wing Cheung Law (Corresponding Author), Xueting Lin, Yehuang Chen, Ling Chen, Gary Chi Pong Tsui, Nanxi Rao

Research output: Journal article publicationJournal articleAcademic researchpeer-review

4 Citations (Scopus)


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.

Original languageEnglish
Pages (from-to)608-615
Number of pages8
JournalPolymer Engineering and Science
Issue number3
Publication statusPublished - Mar 2019

ASJC Scopus subject areas

  • Chemistry(all)
  • Polymers and Plastics
  • Materials Chemistry

Cite this