資料載入中.....
|
請使用永久網址來引用或連結此文件:
https://irlib.pccu.edu.tw/handle/987654321/26970
|
| 題名: | The Properties of Melt-Blended Compatibilized Metallocene Polyethylene/Clay Nanocomposites |
| 作者: | Chen, WC (Chen, Wen-Chih)
Lai, SM (Lai, Sun-Mou)
Wang, ZW (Wang, Zi Way)
Qiu, RY (Qiu, Rong Yu) |
| 貢獻者: | Dept Chem Engn |
| 關鍵詞: | Metallocene polyethylene
Montmorillonite
Nanocomposite
Compatibilizer
Mechanical properties |
| 日期: | 2013 |
| 上傳時間: | 2014-03-03 15:48:25 (UTC+8) |
| 摘要: | Although it is well known to employ compatibilizer to assist clay dispersion in thermoplastic/clay systems, the properties of compatibilizers have often been neglected. Metallocene polyethylene (mPE)/clay nanocomposites were prepared via a melt-blending approach to further investigate this compatibilization effect. Maleated mPE (mPE-g-MA) was also prepared as a compatibilizer to improve the dispersion of commercial organoclay. The mPE/mPE-g-MA/clay compatibilized systems showed good dispersion of clay or swollen tactoids through X-ray diffraction (XRD) and transmission electron microscopy (TEM) assessments. The compatibilized cases showed slightly higher crystallization temperatures at higher clay contents than their counterparts without any compatibilizer. The mechanical properties of the investigated systems were rather complex and unusual. The Young's modulus of compatibilized nanocomposites showed slightly higher values in all investigated cases, stemming from the more effective interfacial interaction. The tensile strength of mPE/clay systems increased with increasing clay content; however, that of mPE/mPE-g-MA/clay systems decreased with increasing clay content due to possible heterogeneous microgel (bound polymer) formation in the compatibilized clay. Lower tear strength for compatibilized cases was found, which was attributed to the low tear strength of the compatibilizer and microgel formation, along with the clay moiety serving as inorganic crosslinks to give less energy dissipation during deformation. The results indicated that high dispersion of clay did not guarantee high strength, and the mechanical properties should be carefully evaluated to exploit the reinforcement of nanocomposites. |
| 關聯: | POLYMERS & POLYMER COMPOSITES Volume: 21 Issue: 1 Pages: 27-36 |
| 顯示於類別: | [化學工程與材料工程學系暨碩士班] 期刊論文
|
在CCUR中所有的資料項目都受到原著作權保護.
|
