Rapid synthesis of sustainable poly(ethylene 2,5-furandicarboxylate)-block-poly(tetramethylene oxide) multiblock copolymers with tailor-made properties via a cascade polymerization route

Polymer ◽  
2021 ◽  
pp. 124313
Author(s):  
Jing Li ◽  
Yanyan Tu ◽  
Huanjun Lu ◽  
Xiaohong Li ◽  
Xiaoming Yang ◽  
...  
Keyword(s):  
Multiblock Copolymers ◽  
Rapid Synthesis ◽  
Poly Ethylene ◽  
Tetramethylene Oxide

Synthesis of thermally protective PET–PEG multiblock copolymers as food packaging materials

2021 ◽  
pp. 096739112110456
Author(s):  
Tuğba Güngör Ertuğral ◽  
Cemil Alkan
Keyword(s):  
Ethylene Glycol ◽  
Phase Change ◽  
Food Packaging ◽  
Phase Change Materials ◽  
Thermal Protection ◽  
Packaging Materials ◽  
Multiblock Copolymers ◽  
Food Packaging Materials ◽  
Poly Ethylene

One of the storage conditions affecting quality of food stuffs due to short shelf life is temperature. Thermal insulation can be achieved by adding phase change materials (PCMs) to packaging materials. PCMs store and release latent heat of phase change during melting and crystallization operations, respectively. Thus, they can provide thermal protection for packaged foods. The aim of this study is to prepare new food packaging materials poly (ethylene terephthalate)–poly (ethylene glycol) (PET–PEG) multiblock copolymers as solid–solid phase change materials (SSPCM) as potential food packaging materials with thermal energy storage (TES) property. Polyesterification was carried out with PEG at different average molecular weights (1000, 4000 and 10,000 g/mol), ethylene glycol (EG) and terephthaloyl chloride (TPC). Synthesized PET–PEG multiblock copolymers were characterized using Fourier transform infrared (FT-IR) spectroscopy and differential scanning calorimetry (DSC) methods. The crystal structures of PET–PEG multiblock copolymers were characterized by polarized optical microscopy (POM) and their surface properties were determined by performing contact angle tests. TES capacity of the PET–PEG multiblock copolymers was found in range of 26.1–150.5 J/g. Consequently, this study demonstrates the potential of PET–PEG multiblock copolymers suitable for effective thermal preservation in packaging material applications to maintain the quality of packaged food stuffs.

Multiblock Copolymers for Recycling Polyethylene–Poly(ethylene terephthalate) Mixed Waste

2020 ◽  
Vol 12 (8) ◽  
pp. 9726-9735
Author(s):  
Keiichiro Nomura ◽  
Xiayu Peng ◽  
Hanim Kim ◽  
Kailong Jin ◽  
Hee Joong Kim ◽  
...  
Keyword(s):  
Ethylene Terephthalate ◽  
Multiblock Copolymers ◽  
Poly Ethylene Terephthalate ◽  
Mixed Waste ◽  
Poly Ethylene

Synthesis and characterization of biodegradable poly(3-hydroxybutyrate) and poly(ethylene glycol) multiblock copolymers

Polymer ◽  
2005 ◽  
Vol 46 (23) ◽  
pp. 10561-10567 ◽  
Author(s):  
Qiang Zhao ◽  
Guoxiang Cheng ◽  
Haiming Li ◽  
Xiaolu Ma ◽  
Liguang Zhang
Keyword(s):  
Ethylene Glycol ◽  
Synthesis And Characterization ◽  
Multiblock Copolymers ◽  
Poly Ethylene Glycol ◽  
Biodegradable Poly ◽  
Poly Ethylene
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