Bio-based poly(urethane urea) dispersions with low internal stabilizing agent contents and tunable thermal properties

Li, Y Yingyuan; Noordover, Baj Bart; Benthem, Ratm Rolf van; Koning, CE Cor

doi:10.1016/j.porgcoat.2015.04.018

Cited by 16 publications

(10 citation statements)

References 59 publications

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“…[ 30 , 31 , 32 , 33 , 34 , 35 , 36 ]. In some very inspiring recent research, the L-lysine based ethyl ester l -lysine diisocyanate was compared to petrol-based hexamethylene diisocyanate, and isophorone diisocyanate in terms of reactivity and final properties of the PU [ 37 , 38 , 39 , 40 , 41 ] and even fully renewable thermoplastic poly(ester urethane urea)s were produced [ 42 ]. More studies on enzymatic breakdown/biodegradability of (biobased) PUs are conducted in recent years proving the importance of environmentally friendly PU applications [ 9 , 43 , 44 , 45 , 46 , 47 ].…”

Section: Introductionmentioning

confidence: 99%

Green Polyurethanes from Renewable Isocyanates and Biobased White Dextrins

Konieczny

Loos

2019

Polymers

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Polyurethanes (PUs) are an important class of polymers due to their low density and thermal conductivity combined with their interesting mechanical properties—they are extensively used as thermal and sound insulators, as well as structural and comfort materials. Despite the broad range of applications, the production of PUs is still highly petroleum-dependent. The use of carbohydrates in PU synthesis has not yet been studied extensively, even though, as multihydroxyl compounds, they can easily serve as crosslinkers in PU synthesis. Partially or potentially biobased di-, tri- or poly-isocyanates can further be used to increase the renewable content of PUs. In our research, PU films could be easily produced using two bio-based isocyanates—ethyl ester L-lysine diisocyanate (LLDI] and ethyl ester l-lysine triisocyanate (LLTI)—, one commercial isocyanate—isophorone diisocyanate (IPDI), and a bio-based white dextrin (AVEDEX W80) as a crosslinker. The thermal and mechanical properties are evaluated and compared as well as the stability against solvents.

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Section: Introductionmentioning

confidence: 99%

Green Polyurethanes from Renewable Isocyanates and Biobased White Dextrins

Konieczny

Loos

2019

Polymers

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“…In the versatile family of polyurethane-ureas, the use of waterborne polyurethane-urea (WBPUU) dispersions is gaining importance due to the environmentally-friendly character of their synthesis process, reducing, or even eliminate, the use of volatile organic compounds [1]. In this way, low viscosity and high solids content dispersions presenting no flammability are obtained [2]. The incorporation of an internal emulsifier along the polyurethane-urea backbone provides the required hydrophilicity [3], which following an adequate composition ensures stable dispersions for months.…”

Section: Introductionmentioning

confidence: 99%

Development of waterborne polyurethane-ureas added with plant extracts: Study of different incorporation routes and their influence on particle size, thermal, mechanical and antibacterial properties

Santamaria‐Echart

Fernandes

Barreiro

et al. 2018

Progress in Organic Coatings

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A B S T R A C TPolyurethane-ureas are a versatile family of polymers which can be employed in a wide range of applications. Among them, waterborne polyurethane-urea (WBPUU) dispersions are gaining relevance in the field of environmentally-friendly products since their productive process adopts green synthesis routes, avoiding the use of organic solvents. Furthermore, their waterborne character can be exploited to incorporate several water compatible ingredients able to confer functional properties to the final materials. Among them, plant extracts, which are known to have relevant bioactivities, can be viewed as interesting candidates. Therefore, in this work, two extracts known to present antimicrobial activity (Melissa officinalis L. and Salvia officinalis L.) were obtained by the infusion method and incorporated into the WBPUU (1, 3 and 5 wt%) following different incorporation routes comprising its adding during different phases of the productive process (post-, in-situ and pre-methods). Thereafter films were prepared by solvent-casting and characterized from the viewpoint of physicochemical, thermal, mechanical, thermomechanical and antibacterial properties and morphologically. The studied incorporation routes resulted in different intercalation mechanisms that varied from extract positioned among the polyurethane-urea nanoparticles (post-method) to extract partially embedded inside them (in-situ and premethods), which produced stiffening or flexibilizing effects in the produced films, enhancing in general the antimicrobial characteristics of films after 4 days of incubation comparing with base WBPUU, especially when the extract is embedded.

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“…This phenomenon can be explained by the fact that the large content of amorphous structure from DDI limited crystallization of the polyurethane film, thereby exhibiting a lower T g . Moreover, the DDI contains a large number of C–C bonds, leading to the high flexibility of the chain segments. − Because the C–C bonds cannot be closely aggregated they facilitate free movement of the chain segments leading to a lower T g .…”

Section: Resultsmentioning

confidence: 99%

“…In recent years, much attention has been drawn to the application of dimer fatty acid-derived isocyanate as a potential alternative to petroleum-based isocyanate. − 2-Heptyl-3,4-bis(9-isocyanatononyl)-1-pentylcyclohexane (DDI) is a special aliphatic diisocyanate derived from dimer fatty acid with two branched long chains connected on the cyclic aliphatic unit. It exhibits excellent flexibility, low water sensitivity, outstanding water resistance, nonyellowing performance, low toxicity, and low viscosity.…”

Section: Introductionmentioning

confidence: 99%

“…Charlon developed a biobased polyurethane elastomer from DDI and biobased marcodiols with 700% of elongation at break and 40 MPa of tensile modulus . Li and Koning synthesized a series of biobased PUD coatings from DDI, dimethylolpropionic acid (DMPA), ethyl ester l -lysine diisocyanate (EELDI), isosorbide, and different chain extenders. − They highlighted that the glass transition temperature was raised by the incorporation of rigid monomers, but the PUD coating films were still too soft to be utilized for the coatings application, which is a major disadvantage of DDI-based PUD coatings. Therefore, it is meaningful to improve the mechanical property of DDI-based PUD coatings.…”

Section: Introductionmentioning

confidence: 99%

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High Biobased Carbon Content Polyurethane Dispersions Synthesized from Fatty Acid-Based Isocyanate

Zhang

Wang

Zeng

et al. 2019

Ind. Eng. Chem. Res.

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A series of high biobased carbon content polyurethane dispersions (PUD) was successfully synthesized from dimer fatty acid diisocyanate (DDI), castor oil (CO), alkoxysilane-modified castor oil (MCO), and dimethylolpropionic acid (DMPA). This work focused on the improvement for the final performance of the renewable DDI-based PUD as well as the discussion of structure/property relationships. The chemical structure of MCO and Si–O–Si cross-link network structure on the dry-film of PUD were characterized by Fourier-transform infrared spectroscopy (FTIR) and solid-state 29Si NMR. The effect of alkoxysilane and NCO/OH ratio on DDI-based PUD were investigated by differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), tensile tests, and electrochemical impedance spectroscopy (EIS). The glass transition temperature, Young’s modulus, and tensile strength increased with the incorporation of alkoxysilane and increasing NCO/OH ratio. In the meanwhile, the initial degradation temperature and elongation at break were reduced with increasing content of alkoxysilane. Finally, the alkoxysilane-modified DDI-based PUD exhibited excellent corrosion resistance after the immersion in NaCl solution for 28 days. In general, the present research suggested that through appropriate modification the DDI-based PUD with high biobased carbon content could exhibit great mechanical properties and excellent anticorrosion properties.

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Bio-based poly(urethane urea) dispersions with low internal stabilizing agent contents and tunable thermal properties

Cited by 16 publications

References 59 publications

Green Polyurethanes from Renewable Isocyanates and Biobased White Dextrins

Green Polyurethanes from Renewable Isocyanates and Biobased White Dextrins

Development of waterborne polyurethane-ureas added with plant extracts: Study of different incorporation routes and their influence on particle size, thermal, mechanical and antibacterial properties

High Biobased Carbon Content Polyurethane Dispersions Synthesized from Fatty Acid-Based Isocyanate

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