摘要
Polycaprolactone/multi-walled carbon nanotubes nano composite （PCL/MWCNT） was synthesized by a one-pot process with microwave-assistance. The fractured structures, crystalline behaviors and thermal properties of the nanocomposites were investigated with an electronic microscope, an X-ray diffraction device, an infrared spectroscopy, and a differential scanning calorimeter, respectively. A universal testing machine was used to study the mechanical properties of the composites. The results showed that when the content of MWCNT was 0.3 % （m/m）, the tensile strength and elongation at break reached the maximum values, and increased from 7.5 MPa and 125 % of neat PCL to 14.8 MPa and 387 %, respectively. With an increase of the MWCNT content, the Young’s modulus continuously increased from 121.5 MPa of PCL to 285.6 MPa. When the MWCNT content was 0.5 % （m/m）, the Young’s modulus was ca. 1.4 fold over that of neat PCL, indicating that the addition of MWCNT resulted in simultaneous enhancement of strength, toughness and modulus remarkably.
Polycaprolactone/multi-walled carbon nanotubes nano composite （PCL/MWCNT） was synthesized by a one-pot process with microwave-assistance. The fractured structures, crystalline behaviors and thermal properties of the nanocomposites were investigated with an electronic microscope, an X-ray diffraction device, an infrared spectroscopy, and a differential scanning calorimeter, respectively. A universal testing machine was used to study the mechanical properties of the composites. The results showed that when the content of MWCNT was 0.3 % （m/m）, the tensile strength and elongation at break reached the maximum values, and increased from 7.5 MPa and 125 % of neat PCL to 14.8 MPa and 387 %, respectively. With an increase of the MWCNT content, the Young’s modulus continuously increased from 121.5 MPa of PCL to 285.6 MPa. When the MWCNT content was 0.5 % （m/m）, the Young’s modulus was ca. 1.4 fold over that of neat PCL, indicating that the addition of MWCNT resulted in simultaneous enhancement of strength, toughness and modulus remarkably.
基金
Supported by International Corporation Project of Shanghai Municipality Commission(10410710000)
the Fundamental Research Funds for the Central Universities (Self-Determined and Innovative Research Funds of WUT)
