Physical and thermo-mechanical properties of PCL/PEG based shape memory polyurethane for orthodontic ligature application

Mehrbakhsh, Elaheh; Rezaei, Mehran; Sofla, Reza Lotfi Mayan; Babaie, Amin

doi:10.1080/00914037.2022.2155157

Cited by 4 publications

(3 citation statements)

References 48 publications

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“…Furthermore, while synthesizing polymer with BDO, it possessed two methylene groups between the hydroxyl functionalities, whereas PDO has only one. Thus, the additional methylene group in BDO may contribute to the polymer’s segmental motion, making it more elastic and less susceptible to stress concentration, correlating with the observed higher elongation at break . Moreover, the cross-linking density of WBPUs, adjustable by varying the types and ratios of monomers, impacts the mechanical stability of the fibers.…”

Section: Resultsmentioning

confidence: 99%

“…50,52 Adding one carbon atom to the chain extender using BDO may create a more spaced and less rigid polymer network, allowing for increased molecular mobility. 70 Furthermore, while synthesizing polymer with BDO, it possessed two methylene groups between the hydroxyl functionalities, whereas PDO has only one. Thus, the additional methylene group in BDO may contribute to the polymer's segmental motion, making it more elastic and less susceptible to stress concentration, correlating with the observed higher elongation at break.…”

Section: Mechanical Propertiesmentioning

confidence: 99%

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Creating Safe, Biodegradable Nanofibers for Food Protection: A Look into Waterborne Polyurethane Electrospinning

Beycan,

Kalkan Erdoğan,

Sancak

et al. 2024

Ind. Eng. Chem. Res.

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Failing to package and preserve food safely causes contamination and the waste of many food materials. To address this point, in this study, an electrospun water-based polyurethane material with a biocompatible and air-permeable texture was prepared to be used as a food packaging material. For this purpose, a waterborne polyurethane (WBPU) was synthesized through melt polymerization using biocompatible polymers, such as poly-(caprolactone diol) and poly(ethylene glycol) as soft segments and lysine diisocyanate as a hard segment, followed by emulsifying with L-lysine aqueous solution in the absence of a catalyst. Then, the electrospinning of the WBPU was conducted to obtain a fibrous film-like material without contributing any additive polymer to the solution. The conditions yielding the most suitable electrospun nanofibrous network tissue were investigated by changing the molecular mass and mole ratio of soft segment polymers used in the synthesis and the type of diol molecules, such as 1,3-propanediol, 1,4-butanediol, and glycerol, used as a chain extender in detail. Structural, thermal, morphological, and mechanical properties of WBPU nanofibers were determined by attenuated total reflectance−Fourier transform infrared, 1 H NMR, GPC, DSC, scanning electron microscopy, contact angle measurement, and tensile test, respectively. The samples' biodegradability and cytotoxicity were demonstrated by burying them in garden soil for a week and the MTT test, respectively. Finally, the usability of the WBPU nanofibrous mesh tissue as food packaging was investigated by covering bananas. The main contribution of this work is the development of a soil-degradable, biocompatible, and air-permeable WBPU nanofibrous material suitable for food packaging applications that can potentially reduce food contamination and waste.

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Section: Resultsmentioning

confidence: 99%

Section: Mechanical Propertiesmentioning

confidence: 99%

Creating Safe, Biodegradable Nanofibers for Food Protection: A Look into Waterborne Polyurethane Electrospinning

Beycan,

Kalkan Erdoğan,

Sancak

et al. 2024

Ind. Eng. Chem. Res.

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“…42,43 The hydroxyl and ether groups of PEG are expected to interact via hydrogen bonds with both PU and PEDOT:PSS, leading to a looser packing within the PU and PEDOT:PSS chains, resulting in increased chain mobility. 44 This also leads to a higher toughness, as it increases the ability of the material to plastically deform and absorb energy before breaking. 41,[45][46][47]…”

Section: Synthesis Of Pu and Preparation Of Pedot:pss/pu-based Filmsmentioning

confidence: 99%

Self-healing, stretchable and recyclable polyurethane-PEDOT:PSS conductive blends

Kim,

Fan,

Petrossian

et al. 2024

Mater. Horiz.

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Synthesis of chemically-crosslinked multi-arm star-shaped polyurethane with triple-shape memory effect

Sakhavi

Sofla

Rezaei

et al. 2023

Journal of the Mechanical Behavior of Biomedical Materials

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Physical and thermo-mechanical properties of PCL/PEG based shape memory polyurethane for orthodontic ligature application

Cited by 4 publications

References 48 publications

Creating Safe, Biodegradable Nanofibers for Food Protection: A Look into Waterborne Polyurethane Electrospinning

Creating Safe, Biodegradable Nanofibers for Food Protection: A Look into Waterborne Polyurethane Electrospinning

Self-healing, stretchable and recyclable polyurethane-PEDOT:PSS conductive blends

Synthesis of chemically-crosslinked multi-arm star-shaped polyurethane with triple-shape memory effect

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