Rheological behavior in blends of PET with ionomeric polyester |
| |
Authors: | Xiao-guang Ma Lixia Gu |
| |
Institution: | a The State Key Laboratory for Modification of Chemical Fiber Donghua University, Shanghai 200051, PR China b Chemical Engineering College of Qingdao University, Qingdao Shandong 266071, PR China |
| |
Abstract: | The rheological behavior and the morphology in blends of polyethylene terephthalate (PET) with ionomeric polyester were investigated over a wide range of different blending ratios. The ionomeric polyester is derived from PET modified through copolycondensation with sulfonate moiety, sodiosulfo isophthalate (Na-SIP), iso-phthalic acid (IPA) and polyethylene glycol (PEG). The results showed that the apparent viscosity and non-Newtonian index of the PET/ionomeric polyester blend system had a nonlinearity change with the change of the blend ratio of PET/ionomeric polyester. The anomaly of the viscous flow activation energy change was found as the content of ionomeric polyester was about 40% (w/w) in the blend system, suggesting the presence of physical cross-linked structure formed by strong polar tangling points and the phase separation owing to poor compatibility between the PET and ionomeric polyester. The morphology and thermal behavior of the blends were observed, respectively, with differential scanning calorimetry (DSC) and atomic force microscopy (AMF). |
| |
Keywords: | PET Ionomeric polyester Rheological Blend Morphology |
本文献已被 ScienceDirect 等数据库收录! |
|