Preparation and Characterization of mPE/Starch Nanocomposites
碩士 === 長庚大學 === 化工與材料工程研究所 === 94 === In this study, an attempt to develop the blends of metallocene polyethylene (mPE)/maleic anhydride-grafted mPE (mPE-g-MA)/starch was conducted. In addition, the nanocompatibilizer (mPE-g-MA/clay) prepared with modified montmorillonite (Cloisite 20A) and compatib...
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| Format: | Others |
| Language: | zh-TW |
| Published: |
2006
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| Online Access: | http://ndltd.ncl.edu.tw/handle/46177959031141215931 |
| Summary: | 碩士 === 長庚大學 === 化工與材料工程研究所 === 94 === In this study, an attempt to develop the blends of metallocene polyethylene (mPE)/maleic anhydride-grafted mPE (mPE-g-MA)/starch was conducted. In addition, the nanocompatibilizer (mPE-g-MA/clay) prepared with modified montmorillonite (Cloisite 20A) and compatibilizer (mPE-g-MA) through melt blending was employed. The effect of nanocompatibilizer on the properties of the blends was investigated by several techniques. XRD and TEM results confirmed that 20A was dispersed homogeneously and exfoliated in mPE matrix. The scanning electron microscope (SEM) images indicated the population of etched holes was fewer along with finer distribution for nanocomposites. The thermogravimetric analysis (TGA) and dynamic mechanical analysis (DMA) results showed that thermal stability and storage modulus of mPE/starch blends were improved after adding nanocompatibilizer (mPE-g-MA/clay). Mechanical properties testing indicated the tensile strength and Young’s modulus of mPE/starch blends were improved after adding each of the compatibilizers (mPE-g-MA/clay), and the nanocompatibilizer yielded a higher efficiency. Water absorption content and biodegradation rate of the blends increased with an increase in starch content and an increase of exposuring time in activated sludge.
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