Melt Rheology of Poly(Lactic Acid)/Low Density Polyethylene Polymer Blends

• 作者: Fawaz Deri Kotiba Hamad Mosab Kaseem
• 来源期刊: 化学工程与科学期刊(英文)
• 学科: 化学
• 关键词: PLA LDPE Polymer BLENDS MELT VISCOSITY Flow ACTIVATION Energy
• 年，卷（期）: 2011,（4）
• 页码范围: 208-214
• 页数: 7页
• 分类号: O6

摘要

In this work, rheological properties of poly (lactic acid) (PLA), low density polyethylene (LDPE) polymer blends were investigated in the molten state. The experiments were carried on a capillary rheometer. The effect of shear stress, temperature and blending ratio on the flow activation energy at a constant shear stress and melt viscosity of the blends are described. The results showed that the PLA/LDPE polymer blends are pseudo plastic in nature, where there viscosity decreases with increasing shear stress. Also it was found the melt viscosity of the blends decreases with increasing PLA content in the blend.