Preparation and characterization of poly(ε‐caprolactone)/Fe3O4 nanocomposites. Issue 4 (3rd June 2021)

• Record Type: Journal Article
• Authors: Liu, Fan; Mao, Chen; Wu, Shou'ang; Wang, Bocheng; Wu, Chonggang; Hu, Tao; Gong, Xinghou
• Is Part Of: Polymer crystallization. Volume 4:Issue 4(2021)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2021-06-03
• Subjects: crystallization -- nano‐Fe3O4 -- PCL -- PCL/Fe3O4 blends -- thermal stability; Crystalline polymers -- Periodicals; Crystallization -- Periodicals; Polymers -- Periodicals; 668.9
• DOI: 10.1002/pcr2.10196
• Languages: English
• ISSNs: 2573-7619

Abstract

Abstract: Poly (ε‐caprolactone) (PCL)/Fe3 O4 nanocomposites were prepared via solvent casting method. Microstructure, composition, and crystal structure of the nanocomposite were characterized by transmission electron microscopy, Fourier transform infrared spectroscopy, and X‐ray diffraction, respectively. The effects of the content of nano‐Fe3 O4 on PCL matrix non‐isothermal and isothermal crystallization behavior were analyzed by differential scanning calorimeter and polarizing microscopy, respectively, and, the thermal stability of nanocomposites was tested by using thermogravimetric analyzer. The results revealed that Fe3 O4 nanoparticles could be dispersed uniformly in PCL matrix. Crystal structure of the polymer matrix was not changed and a handful of nanoparticles has obvious nucleation effect, while excessive particles hindered the crystallization of PCL matrix. However, the thermal decomposition stability of nanocomposites decreased by the addition of Fe3 O4 particles. Abstract : As the filling content of nano‐Fe3 O4 particles is increased steadily, the thermal stability of nano‐Fe3 O4 nanocomposites shows a downtrend presumably due to the degradation of oleic acid molecule and the catalysis of the nano‐Fe3 O4, while their crystallization rate demonstrates a rising trend for the heterogeneous nucleating effect of the nano‐Fe3 O4 firstly, and then show a downtrend as a result of excessive PCL chains restricted on the surface of the nano‐Fe3 O4 .