期刊
JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY
卷 57, 期 12, 页码 865-875出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/10601325.2020.1800412
关键词
MMT clay; bionanocomposites; poly(epsilon-caprolactone; ); titanium (IV) butoxide; in-situ polymerization
资金
- Hassan II Academy of Science and Technology of Morocco/CSIC-Spain [AH11STC-nano 2011 -2012, 2010MA003]
- MESRSFC of Morocco (PPR program)
- CNRST of Morocco (PPR program)
- bilateral scientific committee programs of collaboration between Morocco and Tunisia [17/TM/20]
- Spanish Ministry of Science and Innovation (MICINN) [MAT2016-81138-R]
The first example of the usefulness of titanium (IV) butoxide, as initiators for open airin-situintercalative polymerization of epsilon-caprolactone (epsilon-CL) in the presence of organoclay is herein reported. The bionanocomposites based on poly(epsilon-caprolactone) (PCL) were prepared byin-situRing Opening Polymerization (ROP) of epsilon-caprolactone in the presence of different organomodified montmorillonite clay (ODA-MMT) loading (1, 3 and wt%). Structural, thermal and mechanical characterizations of the resulting bionanocomposites were investigated. The presence of the nanoclay increased PCL crystallinity, melting temperature and thermal stability, whereas some decrease inT(g)was observed. TEM analyses confirmed the good dispersion of ODA-MMT with 1 and 3 wt% content into the PCL polymer as already asserted by XRD diffraction. Finally, the Young's modulus of the PCL nanocomposites was higher compared to the neat PCL, while a decrease of stress and strain at break for materials with different filler content was observed.
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