Novel impacts of glycol-modified poly(ethylene terephthalate)(PETG) to crystallization behavior of polyethylene naphthalate (PEN) within stretched miscible blends

Jheng, Li‐Cheng; Yang, Chun Yen; Leu, Ming Tsong; Hsu, Kuo Chin; Wu, June H.; Ruan, Jrjeng; Shih, Kuo Chen

doi:10.1016/j.polymer.2012.04.035

Cited by 8 publications

(2 citation statements)

References 46 publications

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“…Besides, based on structural considerations, PET and its homologs like PET-G and PEF, are capable of specific interactions (e.g., H-bonding), but also, chemical reactions with a variety of other polar polymers. In this context, there are few studies on the preparation and characterization of PET-G blends with other polymers like PET [28,29], poly(butylene terephthalate) (PBT) [3,30], recycled PET-G [9], poly(ethylene naphthalate) (PEN) [31], polycarbonates (PC) [32], ethylene-vinyl copolymer (EVA) [33,34], PP [35], polyetherimide (PEI) [36] or even with ethylene propylene diene monomer (EPDM) [37]. For instance, in the work of Papadopoulou and Kalfoglou [29], the melt-mixed PET/PET-G blends show good mechanical properties at all compositions when quenched, and the annealing caused tensile properties reduction at high PET contents due to embrittlement.…”

Section: Introductionmentioning

confidence: 99%

Environmentally Friendly Polymer Blends Based on Post-Consumer Glycol-Modified Poly(Ethylene Terephthalate) (PET-G) Foils and Poly(Ethylene 2,5-Furanoate) (PEF): Preparation and Characterization

2020

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Environmentally friendly polymer blends between post-consumer PET-G and bio-based poly(ethylene 2,5 furanoate) (PEF) have been prepared. The PET-G granules were obtained from the post-consumer glycol-modified poly(ethylene terephthalate) PET-G foils from Nicrometal S.A. as a result of materials recycling. PEF was synthesized from dimethyl furan-2,5-dicarboxylate and 1,2-ethylene glycol (BioUltra) by a two-stage melt polycondensation process. According to the calculations followed by Hoy’s method, one has studied the miscibility of the components in the blend. The molecular structure of PET-G/PEF blends was analyzed by Fourier Transform Infrared Spectroscopy (FTIR) spectroscopy, while the morphology of the blends was determined by Scanning Electron Microscopy (SEM). To evaluate phase transition temperatures, as well as the thermal effects in PET-G/PEF blends, Differential Scanning Calorimetry (DSC), Dynamic Mechanical Thermal Analysis (DMTA), and Thermogravimetric Analysis (TGA), were performed. Tensile tests revealed that along with an increase in the amount of PEF, an increase in Young’s modulus was observed. Besides, the existence of interfacial interactions between polymers, especially in the case of PET-G/PEF 80/20, enabling the PET-G chains to form a network structure with the PEF by reacting with their functional groups, allows observation of a synergistic effect in the improvement of thermal stability and water absorption.

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Section: Introductionmentioning

confidence: 99%

Environmentally Friendly Polymer Blends Based on Post-Consumer Glycol-Modified Poly(Ethylene Terephthalate) (PET-G) Foils and Poly(Ethylene 2,5-Furanoate) (PEF): Preparation and Characterization

2020

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“…[28][29][30] More importantly, its easy processability is beneficial for the large-scale manufacturing process. [31] Here, kirigami pattern composed of simple line cuts is selected because light transmission or reflection can be easily controlled by the out-of-plane buckling of the units between cuts simply through stretching of the kirigami envelope. Moreover, the dimension and geometry of the kirigami patterns can be varied to modulate the light from the outside, thus improving the thermal comfort of the indoor occupants in various scenarios.…”

Section: Introductionmentioning

confidence: 99%

Large‐Scaled and Solar‐Reflective Kirigami‐Based Building Envelopes for Shading and Occupants’ Thermal Comfort

Jung,

Hou,

Kang

et al. 2023

Advanced Sustainable Systems

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Conventional air conditioning in buildings consumes substantial energy contributing to an increase in greenhouse gas emissions, which aggravates global warming. Kirigami envelopes with reflective surfaces offer a promising option to reduce indoor heat gain. So far none has performed outdoor testing of kirigami envelopes nor numerical simulation to understand how they interact with the environment. To understand the impact of the geometric design of the kirigami shading system on both daylighting and temperature variation in the indoor environment, a series of prototypes and simulations is devised to investigate the real‐time shading behavior in an outdoor environment. Large‐scaled and silver‐coated kirigami‐based envelopes of different cut patterns and stretching ratios are fabricated and placed in front of custom‐designed chambers equipped with six thermo‐sensors. Simulation is performed to investigate the effect of light modulation and hence temperature inside the chamber, which corroborates with the experiments. The indoor daylighting pattern and temperature are significantly influenced by the geometry of the stretched kirigami envelope, and overall, both the indoor temperature and the spatial distribution of illuminance are more uniform compared with that without the kirigami envelope. These results indicate that the installation of kirigami envelopes can improve building energy saving and occupants’ comfort.

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Surface Modification of Polymer Substrates for Biomedical Applications

Slepička

Kasálková

Kolská

et al. 2019

Surface Modification of Polymers

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Novel impacts of glycol-modified poly(ethylene terephthalate)(PETG) to crystallization behavior of polyethylene naphthalate (PEN) within stretched miscible blends

Cited by 8 publications

References 46 publications

Environmentally Friendly Polymer Blends Based on Post-Consumer Glycol-Modified Poly(Ethylene Terephthalate) (PET-G) Foils and Poly(Ethylene 2,5-Furanoate) (PEF): Preparation and Characterization

Environmentally Friendly Polymer Blends Based on Post-Consumer Glycol-Modified Poly(Ethylene Terephthalate) (PET-G) Foils and Poly(Ethylene 2,5-Furanoate) (PEF): Preparation and Characterization

Large‐Scaled and Solar‐Reflective Kirigami‐Based Building Envelopes for Shading and Occupants’ Thermal Comfort

Surface Modification of Polymer Substrates for Biomedical Applications

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