| 초록 |
The inedible castor oil (CO) is one of the vegetable oils which is most important renewable resources. In this study, the effect of the modulation of CO as a soft segment, on the properties of poly (ether ester) elastomers was investigated. A series of poly (ether ester) based thermoplastic elastomers (TPEs) were synthesized by using CO and poly (tetramethylene ether glycol) (PTMEG) with a molecular weight of 1000 as soft segments (SS), dimethyl-2,6-naphthalenedicarboxylate as hard segment, and 1,4-butanediol as chain extender. The relative SS composition of PTMEG/CO was changed from molar ratio from 90/10 to 50/50. The resultant TPEs were systematically characterized by using mechanical, thermal and various spectroscopic analyses. When composition of 10 % CO in SS, the mechanical property of TPEs was appeared the highest value, while the tensile strength and elongation of TPEs were gradually decreased by increasing the composition of CO. |
