Ultradrawing properties of ultrahigh- molecular-weight polyethylene/carbon nanotube fibers prepared at various formation temperatures | |
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學年 | 99 |
學期 | 1 |
出版(發表)日期 | 2011-01-01 |
作品名稱 | Ultradrawing properties of ultrahigh- molecular-weight polyethylene/carbon nanotube fibers prepared at various formation temperatures |
作品名稱(其他語言) | |
著者 | Yeh, Jen-taut; Lai, Yu-ching; Hai, Liu ; Shu, Yao-chi ; Huang Chi-yuan; Huang Kuo-shien ; Chen Kan-nan |
單位 | 淡江大學化學學系 |
出版者 | Chichester: John Wiley & Sons Ltd. |
著錄名稱、卷期、頁數 | Polymer international 60(1), pp.59-68 |
摘要 | The influence of formation temperature on the ultradrawing properties of ultrahigh-molecular-weight polyethylene/carbon nanotube (UHMWPE/CNT) fiber specimens is investigated. Gel solutions of UHMWPE/CNT with various CNT contents were gel-spun at the optimum concentration and temperature but were cooled at varying formation temperatures in order to improve the ultradrawing and tensile properties of the UHMWPE/CNT composite fibers. The achievable draw ratio (Dra) values of UHMWPE/CNT as-prepared fibers reach a maximum when they are prepared with the optimum CNT content and formation temperature. The Dra value of UHMWPE/CNT as-prepared fibers produced using the optimum CNT content and formation temperature is about 33% higher than that of UHMWPE as-prepared fibers produced using the optimum concentration and formation temperature. The percentage crystallinity (Wc) and melting temperature (Tm) of UHMWPE/CNT as-prepared fiber specimens increase significantly as the formation temperature increases. In contrast, Wc increases but Tm decreases significantly as the CNT content increases. Dynamic mechanical analysis of UHMWPE and UHMWPE/CNT fiber specimens exhibits particularly high α-transition and low β-transition, wherein the peak temperatures of α-transition and β-transition increase dramatically as the formation temperature increases and/or CNT content decreases. In order to understand these interesting drawing, thermal and dynamic mechanical properties of the UHMWPE and UHMWPE/CNT as-prepared fiber specimens, birefringence, morphological and tensile studies of as-prepared and drawn fibers were carried out. Possible mechanisms accounting for these interesting properties are proposed. |
關鍵字 | ultrahigh-molecular-weight polyethylene;carbon nanotubes;formation temperatures |
語言 | en |
ISSN | 0959-8103 |
期刊性質 | 國外 |
收錄於 | SCI |
產學合作 | |
通訊作者 | Yeh, Jen-taut |
審稿制度 | |
國別 | GBR |
公開徵稿 | |
出版型式 | 紙本 |
相關連結 |
機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/77236 ) |