Functionalization of multiwalled carbon nanotubes for reinforcing of poly(l-lactide-co--caprolactone) biodegradable copolymers |
| |
Authors: | Ali Nabipour Chakoli Jing Wan Jiang Tao Feng Maryam Amirian Jie He Sui Wei Cai |
| |
Affiliation: | aDepartment of Materials Physics and Chemistry, School of Materials Science and Engineering, Harbin Institute of Technology, P.O. Box 405, Harbin, 150001, China;bLibrary of Harbin Institute of Technology, Harbin, 150001, China |
| |
Abstract: | Up to now, synthetic polymers and biomacromolecules have been grafted or assembled onto the convex surface of carbon nanotubes (CNTs) via covalent bonds or chemisorptions. In this research, poly(l-lactide-co--caprolactone)-functionalized multiwalled carbon nanotubes (MWCNT-OH-g-PCLA)s are synthesized by in situ ring-opening copolymerization of l-lactide (LA) and -caprolactone (CL) using stannous octanoate and hydroxylated MWCNTs (MWCNT-OHs) as the initiating system. The pristine MWCNTs are modified to possess carboxyl groups and then hydroxyl groups. MWCNT-OHs are used as coinitiators to polymerize LA and CL by the surface-initiated ring-opening polymerization. The FT-IR spectra, SEM and TEM micrographs revealed that the PCLA grafted form the sidewall of MWCNTs strongly. The TGA analysis indicates that about 75 wt% of functionalized MWCNTs with PCLA belongs to grafted PCLA and the remaining 25 wt% to the initial MWCNT-OH. |
| |
Keywords: | Multiwalled carbon nanotubes Poly( smCaps" >l-lactide) Poly( http://www.sciencedirect.com/scidirimg/entities/25b.gif" alt=" var epsilon" title=" var epsilon" border=" 0" >-caprolactone) Grafting Ring-opening copolymerization |
本文献已被 ScienceDirect 等数据库收录! |