Biodegradable Polyurethanes Based on Castor Oil and Poly (3-hydroxybutyrate)

Saha, Pathikrit; Khomlaem, Chanin; Aloui, Hajer; Kim, Beom Soo

doi:10.3390/polym13091387

Cited by 17 publications

(12 citation statements)

References 47 publications

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“…Figure 3 shows the 1 H NMR spectrum of PUR 20/5 + PLA in CDCl 3 , in which all proton signals belonging to PCL triol , PCL diol , R,S-PHB, H 12 MDI and PLA segments are confirmed [ 29 , 34 ]. The band corresponding to the proton of the urethane group is found at 7.28 ppm in the spectra (blue box in Figure 3 ).…”

Section: Resultsmentioning

confidence: 99%

Susceptibility to Degradation in Soil of Branched Polyesterurethane Blends with Polylactide and Starch

Brzeska

Jasik²,

Sikorska

et al. 2022

Polymers

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A very important method of reducing the amount of polymer waste in the environment is the introduction to the market of polymers susceptible to degradation under the influence of environmental factors. This paper presents the results of testing the susceptibility to degradation in soil of branched polyesterurethane (PUR) based on poly([R,S]-3-hydroxybutyrate) (R,S-PHB), modified with poly([D,L]-lactide) (PLA) and starch (St). Weight losses of samples and changes in surface morphology (SEM, OM and contact angle system) with simultaneously only slight changes in molecular weight (GPC), chemical structure (FTIR and 1HNMR) and thermal properties (DSC) indicate that these materials are subject to enzymatic degradation caused by the presence of microorganisms in the soil. Chemical modification of branched polyesterourethanes with R,S-PHB and their physical blending with small amounts of PLA and St resulted in a slow but progressive degradation of the samples.

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Section: Resultsmentioning

confidence: 99%

Susceptibility to Degradation in Soil of Branched Polyesterurethane Blends with Polylactide and Starch

Brzeska

Jasik²,

Sikorska

et al. 2022

Polymers

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“…Col100 and Col-TPU composite nanofiber membranes have weight loss caused by thermal decomposition in stage two. The temperature of the maximum decomposition rate (Tp) was used to characterize this thermal decomposition temperature [ 36 ]. The weight-loss curves of all Col-TPU composite nanofiber membranes were higher than those of Col100.…”

Section: Resultsmentioning

confidence: 99%

Preparation and Characterization of Tilapia Collagen-Thermoplastic Polyurethane Composite Nanofiber Membranes

Yang

Chen

2022

Marine Drugs

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Marine collagen is an ideal material for tissue engineering due to its excellent biological properties. However, the limited mechanical properties and poor stability of marine collagen limit its application in tissue engineering. Here, collagen was extracted from the skin of tilapia (Oreochromis nilotica). Collagen-thermoplastic polyurethane (Col-TPU) fibrous membranes were prepared using tilapia collagen as a foundational material, and their physicochemical and biocompatibility were investigated. Fourier transform infrared spectroscopy results showed that thermoplastic polyurethane was successfully combined with collagen, and the triple helix structure of collagen was retained. X-ray diffraction and differential scanning calorimetry results showed relatively good compatibility between collagen and TPU.SEM results showed that the average diameter of the composite nanofiber membrane decreased with increasing thermoplastic polyurethane proportion. The mechanical evaluation and thermogravimetric analysis showed that the thermal stability and tensile properties of Col-TPU fibrous membranes were significantly improved with increasing TPU. Cytotoxicity experiments confirmed that fibrous membranes with different ratios of thermoplastic polyurethane content showed no significant toxicity to fibroblasts; Col-TPU fibrous membranes were conducive to the migration and adhesion of cells. Thus, these Col-TPU composite nanofiber membranes might be used as a potential biomaterial in tissue regeneration.

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“…The above evidence shown that due to the trifunctional group property of CO, the molecular structure of PU changed greatly, and the network structure accounted for more proportion. 48,49 What is more, the crosslinking density of PU-Ci-3 was higher than that of PU-3, which could be attributed to the [2 + 2] cycloaddition reaction of cinnamoyl group. 50…”

Section: Characterization Of Hdci and Pu-ci-xmentioning

confidence: 99%

Light‐driven self‐healing castor oil based polyurethane film with enhanced mechanical properties

Wang

Ren

et al. 2022

J of Applied Polymer Sci

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To meet the need of alleviating the pressure of petrochemical industry and environmental protection, polyurethane (PU) made from castor oil (CO) as polyols, replacing petrochemical based crude material has attracted a lot of recognition over the past decades. For the sake of prolonging the service life of materials, it is also necessary to endow vegetable oil‐based polymers with self‐healing properties, which is seldom involved in present study. Currently, optically responsive self‐healing system has attracted extensive attention because of its easy control and simple occurrence. However, the problem of low self‐healing efficiency also puzzles the current research of this self‐healing system. In this study, cinnamoyl group was introduced into bio‐based PU as end blocking agent. The photoresponse reversible cycloaddition reaction of cinnamyl groups and the acceptable chain fluidity of CO provided the possibility for the self‐healing properties of polymers. The dimerization degree of [2 + 2] cycloaddition reactions was as high as 58% under UV light for 36 h from UV–vis spectrum. Investigation of the optical healing property indicated that incision on the surface of certain PU sample was completely repaired and healing efficiency enhanced up to 93.1%, with the introduction of cinnamoyl group. What is more, the results from TGA, DMA and tensile tests suggested that the prepared PU samples showed excellent comprehensive performance.

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Biodegradable Polyurethanes Based on Castor Oil and Poly (3-hydroxybutyrate)

Cited by 17 publications

References 47 publications

Susceptibility to Degradation in Soil of Branched Polyesterurethane Blends with Polylactide and Starch

Susceptibility to Degradation in Soil of Branched Polyesterurethane Blends with Polylactide and Starch

Preparation and Characterization of Tilapia Collagen-Thermoplastic Polyurethane Composite Nanofiber Membranes

Light‐driven self‐healing castor oil based polyurethane film with enhanced mechanical properties

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