Effect of nanoscale SiO₂ and ZrO₂ as the fillers on the microstructure of LLDPE nanocomposites synthesized via in situ polymerization with zirconocene

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• 作者：Bunjerd Jongsomjit ; Joongjai Panpranot ; Piyasan Praserthdam
• 关键词：Polymer nanocomposite ; Nanofillers ; Metallocene ; LLDPE ; XPS
• 刊名：Materials Letters
• 出版年：2007
• 期刊代码：59_0167577x
• 类别：ms
• 出版时间：March 2007
• 卷：61
• 期：6
• 页码：1376-1379
• 文件大小：616 K

摘要

In the present study, the nanoSiO₂ and nanoZrO₂ were used as the fillers for linear low-density polyethylene (LLDPE) nanocomposites. In fact, the LLDPE nanocomposites were synthesized via the in situ polymerization of ethylene/1-octene with a zirconocene/MAO catalyst in the presence of the fillers. The LLDPE–nanocomposites were further characterized by means of TEM, DSC, ¹³C NMR and XPS. It was found that productivity increased more when the nanoZrO₂ filler was applied. The similar distribution for both fillers was observed by TEM. Based on the ¹³C NMR results, it appeared that the LLDPE nanocomposites obtained from both fillers were random copolymer. In particular, the resulted binding energy and elemental concentration at surface obtained from XPS measurement were further discussed in more details.