Thermomechanical and Shape Memory Performances of Thermo-sensitive Polyurethane Fibers

Aslan, Selçuk; Kaplan, Sibel

doi:10.1007/s12221-018-7127-6

Cited by 24 publications

(19 citation statements)

References 24 publications

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“…Above transition temperature ( T g or T m ), the mobility of soft segment increases, leading higher free volume and increase in pores for passage of more water vapor molecules and below transition temperature the low mobility of soft segment provide lower water vapor permeability and insulating effect . Produced SMPU polymers were investigated in the form of film for smart breathability, fiber to produce fabrics having smart breathability and bagging recovery as a result of dimensional change, coating/finishing applications for smart breathability, wrinkle recovery, crease retention and anti‐felting stimulated by temperature. Among these applications, coating and/or finishing methods have been widely used for their widespread application areas and economic advantages.…”

Section: Introductionmentioning

confidence: 99%

Dual responsive wool fabric by cellulose nanowhisker reinforced shape memory polyurethane

Memiş

Kaplan

2019

J of Applied Polymer Sci

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Shape memory wool fabrics having both temperature and moisture responsiveness were fabricated by a functional nanocomposite treatment comprising of shape memory polyurethane (SMPU) and cellulose nanowhisker (CNW). Water vapor permeability and sweat absorption properties were investigated under different temperature or relative humidity values to test smart comfort capabilities of the treated fabrics. Besides, felting shrinkage and weight loss of the fabrics after repeated washing cycles were investigated for end use performance. It was found out that the wool fabrics functionalized by nanocomposite treatments exhibited dynamic breathability and sweat absorption changing with temperature and relative humidity of body or environment. Moreover, nanocomposite application enhanced rigidity, tear strength, anti‐felting and weight loss performances of the wool fabric. 20 wt% CNW concentration can be suggested for thermal comfort, mechanical and end use performance enhancements to obtain smart garments having dynamic responsiveness to both body physiological and environmental changes. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 137, 48674.

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Section: Introductionmentioning

confidence: 99%

Dual responsive wool fabric by cellulose nanowhisker reinforced shape memory polyurethane

Memiş

Kaplan

2019

J of Applied Polymer Sci

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“…Another candidate SMP objects at micro/nanoscale to achieve the cyclic, thermomechanical test could be SMP micro/ nanofibers, which can be produced by electrospinning [93][94][95][96] Advances in Polymer Technology or wet spinning [97,98]. e shape-memory effect of fiber woven is usually investigated, and the woven can be used in smart textiles [99,100] or biomedical fields [101,102].…”

Section: Smp Fibers At Micro-/nanoscalementioning

confidence: 99%

Surface Structures, Particles, and Fibers of Shape-Memory Polymers at Micro-/Nanoscale

Cao

Wang

Zhou

et al. 2020

Advances in Polymer Technology

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Shape-memory polymers (SMPs) are one kind of smart polymers and can change their shapes in a predefined manner under stimuli. Shape-memory effect (SME) is not a unique ability for specific polymeric materials but results from the combination of a tailored shape-memory creation procedure (SMCP) and suitable molecular architecture that consists of netpoints and switching domains. In the last decade, the trend toward the exploration of SMPs to recover structures at micro-/nanoscale occurs with the development of SMPs. Here, the progress of the exploration in micro-/nanoscale structures, particles, and fibers of SMPs is reviewed. The preparation method, SMCP, characterization of SME, and applications of surface structures, free-standing particles, and fibers of SMPs at micro-/nanoscale are summarized.

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“…Shape recovery of these materials could be achieved at temperatures ranging from 25 to 70 • C. [44]. Aslan et al reported that shape polyurethane fibers prepared by wet spinning demonstrated R f and R r of 71% and 91%, respectively [45]. Although these values are considered good for the shape-memory behavior, shape-memory nanofibers generally show relatively lower shape fixity and recovery properties as compared with shape-memory films.…”

Section: Introductionmentioning

confidence: 99%

Shape-Memory Nanofiber Meshes with Programmable Cell Orientation

Niiyama

Tanabe

Uto

et al. 2019

Fibers

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In this work we report the rational design of temperature-responsive nanofiber meshes with shape-memory properties. Meshes were fabricated by electrospinning poly(ε-caprolactone) (PCL)-based polyurethane with varying ratios of soft (PCL diol) and hard [hexamethylene diisocyanate (HDI)/1,4-butanediol (BD)] segments. By altering the PCL diol:HDI:BD molar ratio both shape-memory properties and mechanical properties could be readily turned and modulated. Though mechanical properties improved by increasing the hard to soft segment ratio, optimal shape-memory properties were obtained using a PCL/HDI/BD molar ratio of 1:4:3. Microscopically, the original nanofibrous structure could be deformed into and maintained in a temporary shape and later recover its original structure upon reheating. Even when deformed by 400%, a recovery rate of >89% was observed. Implementation of these shape memory nanofiber meshes as cell culture platforms revealed the unique ability to alter human mesenchymal stem cell alignment and orientation. Due to their biocompatible nature, temperature-responsivity, and ability to control cell alignment, we believe that these meshes may demonstrate great promise as biomedical applications.

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Thermomechanical and Shape Memory Performances of Thermo-sensitive Polyurethane Fibers

Cited by 24 publications

References 24 publications

Dual responsive wool fabric by cellulose nanowhisker reinforced shape memory polyurethane

Dual responsive wool fabric by cellulose nanowhisker reinforced shape memory polyurethane

Surface Structures, Particles, and Fibers of Shape-Memory Polymers at Micro-/Nanoscale

Shape-Memory Nanofiber Meshes with Programmable Cell Orientation

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