Properties and morphology of recycled poly(ethylene terephthalate)/bisphenol a polycarbonate/poly(styrene-b-(ethylene-co-butylene)-b-styrene) blends by low-temperature solid-state extrusion

2007 ◽  
Vol 18 (7) ◽  
pp. 549-555 ◽  
Author(s):  
Weihong Guo ◽  
Hongsheng Zhang ◽  
Guorong Yin ◽  
Xianwen Tang ◽  
Binyao Li ◽  
...  
Keyword(s):  
Solid State ◽  
Low Temperature ◽  
Bisphenol A ◽  
Ethylene Terephthalate ◽  
Bisphenol A Polycarbonate ◽  
Poly Ethylene Terephthalate ◽  
Poly Ethylene

Fracture and Deformation of Extended-Chain Crystals in Poly(ethylene Terephthalate)/Bisphenol-A Polycarbonate Blends Crystallized at High Pressure

2011 ◽  
Vol 214 ◽  
pp. 301-305
Author(s):  
Jun Lu ◽  
Jiao Jiao Tian ◽  
Dao Peng Zhang ◽  
Rui Huang
Keyword(s):  
High Pressure ◽  
Bisphenol A ◽  
Single Crystals ◽  
Ethylene Terephthalate ◽  
Morphological Observation ◽  
Bisphenol A Polycarbonate ◽  
Extended Chain ◽  
Poly Ethylene Terephthalate ◽  
Poly Ethylene ◽  
Functional Components

With a combination of three-dimensional crystal ordering and long-chain molecular orientational ordering, the extended-chain crystals of polymers are ideal system for the studies on low-dimensional physics, and have potential applications as functional components. In this study, poly (ethylene terephthalate) / bisphenol-A polycarbonate (PET/BAPC) blend samples were prepared with solid phase forming technique under high pressure, and extended-chain single crystals with large c-axis thickness were formed within a relative short time. The fracture and deformation behaviors of the grownup crystals were investigated using scanning electron microscopy (SEM) and atomic force microscopy (AFM). Morphological observation showed that most of the extended-chain crystals were endowed with perfect appearance after the sample fracture. However, there were still a few crystals fractured apart, along or perpendicularly to their c-axis direction, or with cohesive fracture surfaces. Fractured spherulites with extended-chain lamellae as substructures were also disclosed in extended-chain crystals with AFM. Furthermore, the parallel lamellae deformed and changed their striation direction during the crystal growth, as was observed on a kind of extended-chain crystals grown in a PET oligomer and BAPC blend (PETO/BAPC). This study may be instructive to the improvement of the separation technique of such single crystals, so as to hasten their real applications.

Low temperature solid-state extrusion of recycled poly(ethylene terephthalate) bottle scraps

2006 ◽  
Vol 102 (3) ◽  
pp. 2692-2699 ◽  
Author(s):  
Weihong Guo ◽  
Xianwen Tang ◽  
Guorong Yin ◽  
Yuanji Gao ◽  
Chifei Wu
Keyword(s):  
Solid State ◽  
Low Temperature ◽  
Ethylene Terephthalate ◽  
Poly Ethylene Terephthalate ◽  
Poly Ethylene

Morphology of High-Pressure Crystallized Poly (Ethylene Terephthalate)/Bisphenol-A Polycarbonate Blends

2011 ◽  
Vol 213 ◽  
pp. 470-474
Author(s):  
Jun Lu ◽  
Dao Peng Zhang ◽  
Jiao Jiao Tian ◽  
Rui Huang
Keyword(s):  
High Pressure ◽  
Bisphenol A ◽  
High Performance ◽  
Ethylene Terephthalate ◽  
Three Dimensional ◽  
Phase System ◽  
Bisphenol A Polycarbonate ◽  
Extended Chain ◽  
Poly Ethylene Terephthalate ◽  
Poly Ethylene

The high-pressure crystallized poly (ethylene terephthalate) / bisphenol-A polycarbonate (PET/BAPC) blend samples were investigated using scanning electron microscopy (SEM) and atomic force microscopy (AFM). Besides the extended-chain single crystals with high quality and large c-axis thickness, the results showed that some novel crystal morphologies were formed in the multi-phase system within a relative short time. Spherulitic structures with different characteristics were observed, in and out the cultured polyester extended-chain crystals, respectively, and their substructures were found to be extended-chain lamellae. Furthermore, bud-like nano-crystals with zero- or one-dimensional structures, some of which aggregated and then evolved into three-dimensional nano-dendrites, were grown during the cooling process of the polyester blends at high pressure. The disclosed entities during this study may promote the understanding of formation process and mechanism for both spherulite and extended-chain crystals of polyesters, so as to instruct the processing of such alloyed engineering plastics with high performance.

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