Preparation and characterization of thermoplastic polyurethanes blended with chitosan and starch processed through extrusion

Amjed, Nyla; Bhatti, Ijaz Ahmad; Simon, Leonardo C.; Castel, Charles Dal; Zia, Khalid Mahmood; Zuber, Muhammad; Hafiz, Iram; Murtaza, Main Anjum

doi:10.1016/j.ijbiomac.2022.03.008

Cited by 24 publications

(11 citation statements)

References 36 publications

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“…27 Owing to their appealing structural characteristics and biocompatibility, they have consistently been used as biostable and inert materials in heart valves, vascular grafts, catheters, prostheses, and other blood-contacting equipment. 28 Conversely, attentiveness in the development of resorbable or degradable polyurethanes for tissue engineering applications has been constantly growing because of safety issues generated by the malfunction of pacemaker leads and polyurethanecovered silicone breast implants in the late 1980s. 29 It is possible to create biodegradable polyurethanes by inserting hydrolyzable connections to the backbone by several techniques; one of the most recommended methods incorporates utilization of poly(lactide), poly (glycolic acid), poly(3-caprolactone), and their copolymers, which are hydrolytically decomposable polyester softened divisions.…”

Section: Synthesis and Structure Of Pus (Different Types Of Pus Being...mentioning

confidence: 99%

“…Polyurethanes have been regarded for generations as being among the most adaptable materials used in a diverse range of biological activities . Owing to their appealing structural characteristics and biocompatibility, they have consistently been used as biostable and inert materials in heart valves, vascular grafts, catheters, prostheses, and other blood-contacting equipment . Conversely, attentiveness in the development of resorbable or degradable polyurethanes for tissue engineering applications has been constantly growing because of safety issues generated by the malfunction of pacemaker leads and polyurethane-covered silicone breast implants in the late 1980s .…”

Section: Introductionmentioning

confidence: 99%

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Recent Advancements in Polyurethane-based Tissue Engineering

Singh

Paswan

Kumar

et al. 2023

ACS Appl. Bio Mater.

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In tissue engineering, polyurethane-based implants have gained significant traction because of their high compatibility and inertness. The implants therefore show fewer side effects and lasts longer. Also, the mechanical properties can be tuned and morphed into a particular shape, owing to which polyurethanes show immense versatility. In the last 3 years, scientists have devised methods to enhance the strength of and induce dynamic properties in polyurethanes, and these developments offer an immense opportunity to use them in tissue engineering. The focus of this review is on applications of polyurethane implants for biomedical application with detailed analysis of hard tissue implants like bone tissues and soft tissues like cartilage, muscles, skeletal tissues, and blood vessels. The synthetic routes for the preparation of scaffolds have been discussed to gain a better understanding of the issues that arise regarding toxicity. The focus here is also on concerns regarding the biocompatibility of the implants, given that the precursors and byproducts are poisonous.

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Section: Synthesis and Structure Of Pus (Different Types Of Pus Being...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Recent Advancements in Polyurethane-based Tissue Engineering

Singh

Paswan

Kumar

et al. 2023

ACS Appl. Bio Mater.

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“…Figure 1E indicates that PPTR‐PU has a fast water absorption rate, the water absorption at 4 h reaches 5.7%, and it is up to 11.9% at 24 h. Furthermore, the equilibrium water absorption is around 14% at 72 h. This property may come from the hydrophilicity of PPTR soft segments with hydrophilic ester groups and PEG units, 19 and it suggests that water can easily diffuse into the interior of PPTR‐PU film, which may be conducive to the hydrolytic degradation. The PPTR‐PU is a hydrophilic material with a WCA of 36.1° as shown in Figure 1F, showing the higher hydrophilicity than the typical polyether‐ and polyester‐based PUs 30–32 …”

Section: Resultsmentioning

confidence: 99%

“…The PPTR-PU is a hydrophilic material with a WCA of 36.1 as shown in Figure 1F, showing the higher hydrophilicity than the typical polyether-and polyester-based PUs. [30][31][32]…”

Section: Structure and Properties Of Pptr-pu Filmmentioning

confidence: 99%

Preparation of bio‐degradable polyurethane based on poly(1,3‐propylene 3,6,9‐trioxaundecanedioate) glycol

Guo

Zhu

Mei

et al. 2022

Polymers for Advanced Techs

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The bio‐based poly(1,3‐propylene 3,6,9‐trioxaundecanedioate) glycol (PPTR) was prepared by the reaction between bio‐based 1,3‐propanediol (bio‐PDO) and 3,6,9‐trioxaundecanedioic acid. The as‐synthesized PPTR combined with bio‐PDO was reacted with 1,6‐hexamethylene diisocyanate to get a bio‐based polyurethane material (PPTR‐PU). The PPTR‐PU film has high tensile strength (17.9 MPa) and toughness (93.7 MJ/m3), and it can be degraded very fast under the existence of HCl and NaOH. The mass loss is 47.8% and 68.4% after 24 h of the degradation in HCl (pH 1) and NaOH (pH 13) solution, respectively. The porcine pancreatic lipase can accelerate the hydrolysis of the film under the physiological environment, leading to an approximately 50% mass loss after 20 d of the enzymatic degradation. The results from 1H nuclear magnetic resonance, DSC, gel permeation chromatography, and FTIR measurements reveal that the PPTR‐PU chains are degraded due to the hydrolysis of ester groups in the PPTR soft segments, leading to the decrease of molecular weights and the increasing degree of hydrogen bonding. The research highlights how to design and prepare the polyurethane material with fast degradable property from bio‐based resources.

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“…Owing to reducing the consumption of petrochemical resources in polyurethane production and responding to demands for sustainable development, more and more scholars are committed to researching the biomass-based polyurethane materials prepared by using biomass materials instead of some petrochemical raw materials. [11] Currently, the biomass for the preparation of polyurethane should contain multiple hydroxyl DOI: 10.1002/macp.202300326 or amino groups, which mainly include castor oil, [12] lignin, [13] starch, [14,15] cellulose, [16] chitosan. [17,18] These biomaterials are generally added to polyurethane by filling or participating in synthesis.…”

Section: Introductionmentioning

confidence: 99%

Chitosan Oligosaccharide Based Waterborne Polyurethane with UV Resistance and Oxidation Resistance for Functional Fabric

Chen,

Ye,

Liu

et al. 2023

Macro Chemistry & Physics

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Chitosan oligosaccharide (COS) is an abundant polysaccharide in nature, which has various functions such as antioxidant and antibacterial. The possibilities of using COS can be extended by applying it to polyurethane materials. Herein, Chitosan oligosaccharide‐based waterborne polyurethane (CWPU) with intramolecular crosslinking network is prepared by using COS as chain extender. The mechanical properties of CWPU are improved, with tensile strength and elongation at break reaching 14.83 MPa and 449.63%, respectively. The DPPH free radical scavenging rate of CWPU increases from 8.43% to 70.98%, indicating that CWPU has favorable antioxidant performance. The tensile strength of the CWPU‐treated fabrics obtained by the padding method improve from 542.77 to 605.33N and there is no significant change in the whiteness of the fabric. Furthermore, the CWPU‐treated fabrics, with the UV protection factor of 30.39 and the UVA transmittance below 3%, can be used as UV‐protective fabrics. This work introduces COS into the molecular structure of polyurethanes to obtain functional PUs, expanding the application of COS in polyurethanes.

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Preparation and characterization of thermoplastic polyurethanes blended with chitosan and starch processed through extrusion

Cited by 24 publications

References 36 publications

Recent Advancements in Polyurethane-based Tissue Engineering

Recent Advancements in Polyurethane-based Tissue Engineering

Preparation of bio‐degradable polyurethane based on poly(1,3‐propylene 3,6,9‐trioxaundecanedioate) glycol

Chitosan Oligosaccharide Based Waterborne Polyurethane with UV Resistance and Oxidation Resistance for Functional Fabric

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