Morphology of LDPE/PA-6 blends compatibilised with poly(ethylene-graft-ethylene oxide)s

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• 作者：Halld&eacute ; n ; Å ; sa ; Deriss ; Mehrnoush Jowkar ; Wessl&eacute ; n ; Bengt
• 关键词：Polymer blend ; Morphology ; Polyethylene
• 刊名：Polymer
• 出版年：2001
• 出版时间：October, 2001
• 年：2001
• 卷：42
• 期：21
• 页码：8743-8751
• 全文大小：748 K

文摘

In the present study, we have investigated the morphology and thermal properties of blends of low density polyethylene (PE) and polyamide-6 (PA-6) with two poly(ethylene-graft-ethylene oxide)s (PE-PEO) as compatibilisers. Blends with PE/PA-6 ratios between 70:30 and 30:70 and copolymer contents between 0 and 6 % were prepared by melt mixing in a Brabender Plastograph. The morphology of the blends was studied by SEM. Addition of PE-PEO2000 to the PE/PA-6 blends decreased the size of the dispersed phase domains significantly and increased the adhesion between the phases. The addition of PE-PEO750 did not have any measurable effect on the PE/PA-6 blend. At a PE/PA-6 ratio of 40:60, the blend formed a morphology with two continuous phases. Addition of 4 % PE-PEO2000 to this blend improved the adhesion between the phases significantly.