Multiwall carbon nanotubes/thermoplastic polyester elastomers nanocomposites

POLY 108

Ja-Young Choi, jayoung@chungbuk.ac.kr1, Eun-Kyoung Choi, ekchoi@chungbuk.ac.kr1, Dong-Hwan Cho, doe1965@samyang.com2, Do Kim, doe1965@samyang.com2, Loon-Seng Tan, Loon-Seng.Tan@afrl.af.mil3, and Jong-Beom Baek, jbbaek@chungbuk.ac.kr1. (1) School of Chemical Engineering, Chungbuk National University, Cheongju, Chungbuk, 361-763, South Korea, (2) SamYang Corporation, Daejeon, South Korea, (3) Polymer Branch, AFRL/MLBP, U. S. Air Force Research Laboratory, 2941 P. Street, Suite 1, Wright-Patterson AFB, OH 45433-7750
By using a mild but less destructive chemical modification method, ethoxybenzoyl moiety was covalently introduced onto the surface of MWNTs. The uniformity of chemical bonding to the surface of MWNT was visually and quantitatively confirmed by SEM and TGA observation, respectively. The functionalized MWNT was dispersed in thermoplastic elastomer (TPE) and cast films. Although the percolated network of well-dispersed pristine MWNT in TPE matrix can also be obtained in thin films with aid of sonication, functionalized MWNT displayed the best compatibility with homogeneous dispersion in TPE matrix.