Castor oil derived poly(urethane urea) networks with reprocessibility and enhanced mechanical properties

Chen, Jiahui; Hu, Dandan; Li, Yidong; Meng, Fanyu; Zhu, Jiang; Zeng, Jian‐Bing

doi:10.1016/j.polymer.2018.04.013

Cited by 65 publications

(52 citation statements)

References 55 publications

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“…25 Castor oilderived PU network possesses a flexible and highly permanent cross-linked network structure. 26 Soybean oil and castor oil contain many hydroxyl groups, which make vegetable oil form a network structure in the process of PU macromolecular chain reaction, and endow PU with excellent thermodynamic properties.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of polymeric dyes based on self‐colored network of castor oil‐based waterborne polyurethane

Zeng

Yin

et al. 2020

J of Applied Polymer Sci

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The development of vegetable oil‐based polymers was particularly suitable for the era of increasingly scarce petroleum. Self‐colored castor oil‐based waterborne polyurethanes (PUs) were successfully synthesized based on castor oil and 1‐amino‐4‐hydroxy‐2‐(6‐hydroxyhexyl) anthraquinone (DR) as polyols. The UV–Vis spectrum showed that the addition of carboxylic acid groups make the spectrum of the PU produce the hyperchromic effect under alkaline conditions. Castor oil‐based waterborne colored PUs possessed excellent stability under weak alkaline conditions. The connection of castor oil caused the PU to constitute soft polymer networks. PU coatings on cotton fabrics possessed excellent color properties. The urethane groups in the PUs formed hydrogen bonds with the hydroxyl groups on the cotton fibers and the polymer network structure formed by the PU coating itself made the color fastness of the cotton coatings reached grade 5. With the increase of castor oil content, the degradation rate of castor oil‐based waterborne colored PU increased from 3.45% to 3.65%. This work provides a way to impart excellent color properties and fastness to PU coatings by inserting dye molecules and vegetable oils into the PU macromolecular chain.

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Section: Introductionmentioning

confidence: 99%

Synthesis of polymeric dyes based on self‐colored network of castor oil‐based waterborne polyurethane

Zeng

Yin

et al. 2020

J of Applied Polymer Sci

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“…The thermal properties of TPU can be improved by using blending [10,11,12], copolymers [13], and cross-linked structures [14]. Another approach is the functionalized introduction of fluorine-containing chemicals to form fluoroacrylate polyurethane (FPU), which is expected to have properties similar to those of other fluorinated polymers [15], including biocompatibility, excellent environmental stability, hydrolysis resistance, thermal stability [16,17], chemical resistance, low interface free energy, and water and oil resistance [18].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Properties of Novel Polyurethanes Containing Long-Segment Fluorinated Chain Extenders

Lee

Tsai

et al. 2018

Polymers

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In this study, novel biodegradable long-segment fluorine-containing polyurethane (PU) was synthesized using 4,4′-diphenylmethane diisocyanate (MDI) and 1H,1H,10H,10H-perfluor-1,10-decanediol (PFD) as hard segment, and polycaprolactone diol (PCL) as a biodegradable soft segment. Nuclear magnetic resonance (NMR) was used to perform 1H NMR, 19F NMR, 19F–19F COSY, 1H–19F COSY, and HMBC analyses on the PFD/PU structures. The results, together with those from Fourier transform infrared spectroscopy (FTIR), verified that the PFD/PUs had been successfully synthesized. Additionally, the soft segment and PFD were changed, after which FTIR and XPS peak-differentiation-imitating analyses were employed to examine the relationship of the hydrogen bonding reaction between the PFD chain extender and PU. Subsequently, atomic force microscopy was used to investigate the changes in the microphase structure between the PFD chain extender and PU, after which the effects of the thermal properties between them were investigated through thermogravimetric analysis, differential scanning calorimetry, and dynamic mechanical analysis. Finally, the effects of the PFD chain extender on the mechanical properties of the PU were investigated through a tensile strength test.

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“…Its versatility has sparked great interest in self-healable PUs with higher durability when compared to the standard PUs. Moreover, self-healable materials are eco-friendly and cost-effective [ 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 ].…”

Section: Introductionmentioning

confidence: 99%

“…The development of self-healable PUs has significantly advanced in recent decades. The self-healability and reprocessability of PUs has been achieved by several strategies based on reversible dynamic covalent chemistry, such as the Diels–Alder (DA) and retro-DA reactions [ 11 , 12 , 13 , 14 ], disulfide metathesis [ 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 ], alkoxyamine chemistry [ 24 ], the amine–urea exchange reaction [ 25 ], and the reversible acetal chemistry [ 26 ]. However, dynamic chemistry brings into play the functional compounds into the PU system, thereby increasing the cost of the raw materials and the process complexity.…”

Section: Introductionmentioning

confidence: 99%

Sorbitol as a Chain Extender of Polyurethane Prepolymers to Prepare Self-Healable and Robust Polyhydroxyurethane Elastomers

2018

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A self-healable polyhydroxyurethane (S-PU) was synthesized from sorbitol, a biomass of polyhydric alcohol, by a simple process that is suitable for practical applications. In the synthesis, only two primary hydroxyl groups of sorbitol were considered for the chain extension of the polyurethane (PU) prepolymers to introduce free hydroxyl groups in PU. As a control, conventional PU was synthesized by hexane diol mediated chain extension. Relative to the control, S-PU showed excellent intrinsic self-healing property via exchange reaction, which was facilitated by the nucleophilic addition of the secondary hydroxyl groups without any catalytic assistance and improved tensile strength due to the enhanced hydrogen bonding. We also investigated the effect of the exchange reaction on the topological, mechanical, and rheological properties of S-PU. The suggested synthetic framework for S-PU is a promising alternative to the conventional poly hydroxyurethane, in which cyclic carbonates are frequently reacted with amines. As such, it is a facile and environmentally friendly material for use in coatings, adhesives, and elastomers.

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Castor oil derived poly(urethane urea) networks with reprocessibility and enhanced mechanical properties

Cited by 65 publications

References 55 publications

Synthesis of polymeric dyes based on self‐colored network of castor oil‐based waterborne polyurethane

Synthesis of polymeric dyes based on self‐colored network of castor oil‐based waterborne polyurethane

Synthesis and Properties of Novel Polyurethanes Containing Long-Segment Fluorinated Chain Extenders

Sorbitol as a Chain Extender of Polyurethane Prepolymers to Prepare Self-Healable and Robust Polyhydroxyurethane Elastomers

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