Park, Hong-Jo Kim, Jihun Seo, Yongsok Shim, Junho Sung, Moon-Yong Kwak, Soonjong 2024-01-20T11:33:18Z 2024-01-20T11:33:18Z 2021-09-05 2013-09 1598-5032 https://pubs.kist.re.kr/handle/201004/127697 A carbon nanotube (CNT)/ultra high molecular weight polyethylene (UHMWPE) composite has been prepared through in situ polymerization of ethylene using Ti-based Ziegler-Natta catalysts fixed on the surface of CNT. The in situ polymerization of ethylene produced CNTs regularly encapsulated with UHMWPE, which showed very uniform dispersion of CNTs in the UHMWPE matrix after direct molding. In tensile and ring-on-block wear tests, the in situ polymerized composites showed mechanical and wear properties superior to mechanically blended composites. In particular, the polymerized composite displayed a remarkable suppression of abrasive wear, which was the wear mechanism observed in unfilled UHMWPE and mechanically blended composites; the in situ polymerized composite containing about 10 wt% of CNT had an approximately 2.5 times lower wear rate than unfilled UHMWPE. Moreover, the polymerized composite showed higher thermal conductivity with CNT content when compared to the blended composites, which suggests an easier transfer of heat generated during a severe wear operation. English SPRINGER ZIEGLER-NATTA POLYMERIZATION SURFACE CHARACTERIZATIONS THERMAL-CONDUCTIVITY RAMAN-SPECTROSCOPY CHEMISTRY Wear behavior of in situ polymerized carbon nanotube/ultra high molecular weight polyethylene composites Article 10.1007/s13233-013-1130-6 1 MACROMOLECULAR RESEARCH, v.21, no.9, pp.965 - 970 MACROMOLECULAR RESEARCH 21 9 965 970 scie scopus kci ART001802860 000319772100004 2-s2.0-84878897500 Polymer Science Polymer Science Article ZIEGLER-NATTA POLYMERIZATION SURFACE CHARACTERIZATIONS THERMAL-CONDUCTIVITY RAMAN-SPECTROSCOPY CHEMISTRY carbon nanotube ultra high molecular polyethylene (UHMWPE) in situ composite wear thermal conductivity dispersion.