Impact of organoclays on the phase morphology and the compatibilization efficiency of immiscible poly(ethylene terephthalate)/poly(ε‐caprolactone) blends

2020 ◽  
Vol 137 (24) ◽  
pp. 48812
Author(s):  
Dalila Saaoui ◽  
Samira Benali ◽  
Rosica Mincheva ◽  
Abderrahmane Habi ◽  
Philippe Dubois ◽  
...  
Keyword(s):  
Ethylene Terephthalate ◽  
Phase Morphology ◽  
Poly Ethylene Terephthalate ◽  
Poly Ethylene

scholarly journals Effects of Phase Morphology on Mechanical Properties: Oriented/Unoriented PP Crystal Combination with Spherical/Microfibrillar PET Phase

Polymers ◽  
2019 ◽  
Vol 11 (2) ◽  
pp. 248 ◽  
Author(s):  
Dashan Mi ◽  
Yingxiong Wang ◽  
Maja Kuzmanovic ◽  
Laurens Delva ◽  
Yixin Jiang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Impact Strength ◽  
Ethylene Terephthalate ◽  
Phase Morphology ◽  
Mechanical Recycling ◽  
Immiscible Blends ◽  
Poly Ethylene Terephthalate ◽  
Poly Ethylene ◽  
The Impact

In situ microfibrillation and multiflow vibrate injection molding (MFVIM) technologies were combined to control the phase morphology of blended polypropylene (PP) and poly(ethylene terephthalate) (PET), wherein PP is the majority phase. Four kinds of phase structures were formed using different processing methods. As the PET content changes, the best choice of phase structure also changes. When the PP matrix is unoriented, oriented microfibrillar PET can increase the mechanical properties at an appropriate PET content. However, if the PP matrix is an oriented structure (shish-kebab), only the use of unoriented spherical PET can significantly improve the impact strength. Besides this, the compatibilizer polyolefin grafted maleic anhydride (POE-g-MA) can cover the PET in either spherical or microfibrillar shape to form a core–shell structure, which tends to improve both the yield and impact strength. We focused on the influence of all composing aspects—fibrillation of the dispersed PET, PP matrix crystalline morphology, and compatibilized interface—on the mechanical properties of PP/PET blends as well as potential synergies between these components. Overall, we provided a theoretical basis for the mechanical recycling of immiscible blends.

Phase Morphology, Mechanical and Thermal Properties of Poly (Trimethylene Terephthalate) and Poly (Ethylene Terephthalate) Blends

2016 ◽  
Vol 835 ◽  
pp. 277-283
Author(s):  
Pan Jin Jia ◽  
Ya Fei Wang ◽  
Hui Bo Li ◽  
Ming Tao Run
Keyword(s):  
Thermal Properties ◽  
Ethylene Terephthalate ◽  
Testing Machine ◽  
Phase Morphology ◽  
Recrystallization Process ◽  
Mechanical And Thermal Properties ◽  
Poly Ethylene Terephthalate ◽  
Supercooling Degree ◽  
Trimethylene Terephthalate ◽  
Poly Ethylene

The poly (ethylene terephthalate)/poly (trimethylene terephthalate) (PET/PTT) blends were prepared and their phase morphology, mechanical and thermal properties were investigated by scanning electron microscopy (SEM), polarized optical microscopy (POM), universal material testing machine, differential scanning calorimetry (DSC), wide-angle X-ray (WAXD), respectively. The glass transition and SEM results suggest apparently that the PET and PTT have good miscibility at amorphous state. The blends with more PET content less likely undergo a melting/recrystallization process during DSC heating scan. In the blends, PET component with higher supercooling degree crystallizes first, and then the crystallites of PET will be the nucleating agents for PTT, which greatly improves the crystallization rate of PTT. Because of the interaction between the PET and PTT, there are much smaller spherulites formed in blends with increasing PET component. The blend with more PET contents has larger tensile strength and modulus.

Formation of high-density polyethylene–poly(ethylene-octene) core–shell particles in recycled poly(ethylene terephthalate) by reactive blending

2019 ◽  
Vol 35 (3) ◽  
pp. 117-137
Author(s):  
Yongjun Liu ◽  
Ming Zhong ◽  
Gang Liu ◽  
Shouzhi Pu
Keyword(s):  
Mechanical Properties ◽  
High Density Polyethylene ◽  
Ethylene Terephthalate ◽  
Phase Morphology ◽  
High Density ◽  
Dispersed Phase ◽  
Core Shell ◽  
Poly Ethylene Terephthalate ◽  
Poly Ethylene ◽  
Shell Particles

Recycled poly(ethylene terephthalate) (R-PET)/high-density polyethylene (HDPE)/glycidyl methacrylate grafted poly(ethylene-octene) (mPOE) blends, in which the binary (HDPE/mPOE) dispersed phase was of a HDPE core-mPOE shell structure, were prepared. For this purpose, HDPE-g-mPOE graft copolymers were prepared in HDPE/mPOE blends via reactive extrusion with the presence of the free radical initiator dicumyl peroxide (DCP). Then, R-PET was blended with the HDPE/mPOE blends by melt extrusion. The effect of the DCP and mPOE content in the HDPE/mPOE blends on the phase morphology and mechanical properties of the R-PET/HDPE/mPOE blends were studied systematically. It was found that the blends containing reactive compatibilizer exhibited the encapsulation of the HDPE by the mPOE, forming core–shell particles dispersed phase morphology. The graft chains of HDPE-g-mPOE-g-PET formed by the in situ reaction between R-PET and mPOE phases reduced the interfacial tension. Consequently, the dispersed phase morphology was observed to form smaller diameter core–shell particles. The resultant blends exhibited an effect on both the thermal and mechanical properties. Differential scanning calorimetric analysis showed the dispersed phase particles could act as a nucleating agent in the R-PET matrix to improve the crystallization temperature, while the graft copolymers formed in the compatibilized R-PET/HDPE/mPOE blend decreased the nucleation activity. Notched Charpy impact strength and elongation at break of the R-PET were improved by forming the core–shell particles dispersed phase morphology.

Effect of migration of layered nanoparticles during melt blending on the phase morphology of poly (ethylene terephthalate)/polyamide 6/montmorillonite ternary nanocomposites

RSC Advances ◽  
2015 ◽  
Vol 5 (38) ◽  
pp. 29924-29930 ◽  
Author(s):  
Guomin Xu ◽  
Shuhao Qin ◽  
Jie Yu ◽  
Yifu Huang ◽  
Mingqiu Zhang ◽  
...  
Keyword(s):  
Polymer Blends ◽  
Ethylene Terephthalate ◽  
Great Influence ◽  
Polyamide 6 ◽  
Phase Morphology ◽  
Melt Blending ◽  
Melt Compounding ◽  
Poly Ethylene Terephthalate ◽  
Selective Localization ◽  
Poly Ethylene

Migration and selective localization of layered nanoparticles during melt compounding have great influence on phase morphology of polymer blends.

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