From Aminolysis Product of PET Waste to Novel Biodegradable Polyurethanes

Sadeghi, Gity Mir Mohamad; Shamsi, Ramin; Sayaf, Mahsa

doi:10.1007/s10924-011-0283-7

Cited by 71 publications

(32 citation statements)

References 49 publications

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“…Building on such a background, we are interested in solid elastomers that are widely used for commercial products, and hence we attempted to develop polymer materials with new functionalities. Various studies have used natural products as raw materials [8]- [20], initiators [21]- [23], and coating agents [24]- [26]. In addition, polyurethane elastomers (PUEs) containing natural products have been used as biocompatible materials in the medical field [27] [28].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Properties of Polyurethane Elastomers Containing Sucrose as a Cross-Linker

Kizuka¹,

Inoue²

2015

OJOPM

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Polyaddition using isocyanate and polyol forms polyurethane elastomer (PUE). However, this method has rarely been applied to the construction of PUEs containing sucrose. Hence, the introduction of sucrose (disaccharide) as a cross-linker via polyaddition remains a challenging subject in polymer chemistry. Here, we report the synthesis of PUEs using an aromatic isocyanate (4,4'-diphenylmethane diisocyanate), polyols including a polyether polyol (polytetramethylene glycol) and two polyester polyols (polycaprolactone and polycarbonate diols), and sucrose as a crosslinker by a one-shot method. The PUEs containing sucrose were successfully produced. The use of sucrose was essential to obtain the desired PUEs containing sucrose units in the main chain.

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Section: Introductionmentioning

confidence: 99%

Synthesis and Properties of Polyurethane Elastomers Containing Sucrose as a Cross-Linker

Kizuka¹,

Inoue²

2015

OJOPM

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“…The chemicals such as alkyl amines or liquid ammonia are used in excess for PET de-polymerization (Table 4). Aminolysis and ammonolysis mainly yielded the corresponding monomeric amides of terephthalic acid [223,[226][227][228][229][230][231][232][233][234]. The de-polymerization agent, which was mainly applied, was ethanol amine (EA, Table 4).…”

Section: Aminolysis/ammonolysismentioning

confidence: 99%

Recycling of poly(ethylene terephthalate) – A review focusing on chemical methods

Geyer¹,

Lorenz²,

Kandelbauer³

2016

Express Polym. Lett.

206

120

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Abstract.Recycling of poly(ethylene terephthalate) (PET) is of crucial importance, since worldwide amounts of PETwaste increase rapidly due to its widespread applications. Hence, several methods have been developed, like energetic, material, thermo-mechanical and chemical recycling of PET. Most frequently, PET-waste is incinerated for energy recovery, used as additive in concrete composites or glycolysed to yield mixtures of monomers and undefined oligomers. While energetic and thermo-mechanical recycling entail downcycling of the material, chemical recycling requires considerable amounts of chemicals and demanding processing steps entailing toxic and ecological issues. This review provides a thorough survey of PET-recycling including energetic, material, thermo-mechanical and chemical methods. It focuses on chemical methods describing important reaction parameters and yields of obtained reaction products. While most methods yield monomers, only a few yield undefined low molecular weight oligomers for impaired applications (dispersants or plasticizers). Further, the present work presents an alternative chemical recycling method of PET in comparison to existing chemical methods.

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“…PUs are used commercially in seven major product types [4]- [9]: 1) flexible slabs; 2) flexible molded researchers have continued to develop polymer materials with novel functionalities. Various studies have used natural products as raw materials [10]- [22], initiators [23] [24] [25], and coating agents [26] [27] [28]. In addition, polyurethane elastomers (PUEs) containing natural products have been used as biocompatible materials in the medical field [29] [30].…”

Section: Introductionmentioning

confidence: 99%

Influences of Polyol on the Chemical, Thermal, and Mechanical Properties of Polyurethane Elastomers Crosslinked by <i>β</i>-Cyclodextrin

Chen¹,

Xie²,

Zhang³

et al. 2017

OJOPM

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A series of polyurethane elastomers (PUEs) were synthesized from an aromatic diisocyanate (4, 4'-diphenylmethane diisocyanate); a polyether polyol (polytetramethylene glycol, molecular weight: 1000), polyester polyol (polycaprolactonediol, molecular weight: 1000, or polycarbonate diol, molecular weight: 1000); and β-cyclodextrin (β-CD) as a cross-linker. The effect of the polyol on the morphologies and chemical, thermal, and mechanical properties of the resultant β-CD-based PUEs were investigated in this study. The obtained films were characterized via solubility and swelling tests (chemical properties), differential scanning calorimetry (crystallinity degree), dynamic mechanical analysis (thermal stability), thermogravimetric analysis (thermal stability), tensile testing (mechanical properties), nuclear magnetic resonance spectroscopy, infrared spectroscopy, atomic force microscopy (morphology), contact angle determination (morphology), and scanning electron microscopy (morphology).

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From Aminolysis Product of PET Waste to Novel Biodegradable Polyurethanes

Cited by 71 publications

References 49 publications

Synthesis and Properties of Polyurethane Elastomers Containing Sucrose as a Cross-Linker

Synthesis and Properties of Polyurethane Elastomers Containing Sucrose as a Cross-Linker

Recycling of poly(ethylene terephthalate) – A review focusing on chemical methods

Influences of Polyol on the Chemical, Thermal, and Mechanical Properties of Polyurethane Elastomers Crosslinked by <i>β</i>-Cyclodextrin

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From Aminolysis Product of PET Waste to Novel Biodegradable Polyurethanes

Cited by 71 publications

References 49 publications

Synthesis and Properties of Polyurethane Elastomers Containing Sucrose as a Cross-Linker

Synthesis and Properties of Polyurethane Elastomers Containing Sucrose as a Cross-Linker

Recycling of poly(ethylene terephthalate) – A review focusing on chemical methods

Influences of Polyol on the Chemical, Thermal, and Mechanical Properties of Polyurethane Elastomers Crosslinked by &lt;i&gt;β&lt;/i&gt;-Cyclodextrin

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Influences of Polyol on the Chemical, Thermal, and Mechanical Properties of Polyurethane Elastomers Crosslinked by <i>β</i>-Cyclodextrin