Ultrafine PDMS fibers: preparation from in situ curing-electrospinning and mechanical characterization

Niu, Haitao; Wang, Hongxia; Zhou, Hua; Lin, Tong

doi:10.1039/c4ra00232f

Cited by 49 publications

(34 citation statements)

References 27 publications

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“…Once the sheath was removed, the PDMS fi bers shrank to allow structural relaxation, increasing the diameter. [ 19 ] AFM imaging indicated that the root mean square roughness (RMS) of the PDMS fi bers increased from 11.0 to 31.3 nm after vapor-phase polymerization treatment (see Figure S1, Supporting Information). Based on SEM images, the thickness of PPy coating was estimated, being in the range of 80-150 nm.…”

Section: Resultsmentioning

confidence: 99%

“…Without PPy coating, the PDMS fi brous membranes showed a typical hysteresis loops in cyclic loading/unloading tests, and the loading stress was higher than that of unloading one because of the friction between PDMS fi bers inside the membrane. [ 19,25 ] For the PPy-coated PDMS fi brous membrane, a very small hysteresis loop than the uncoated PDMS fi brous membrane formed during loading/unloading. The stretching and retracting forces were nearly the same, indicating low friction between fi bers during deformation.…”

Section: Resultsmentioning

confidence: 99%

“…[ 19 ] Briefl y, PDMS and PVP solutions were co-electrospun, respectively, as core and sheath using a co-axel spinneret. The fl ow rates of the PDMS and the PVP solutions were controlled at 0.5 and 2.4 mL h −1 during electrospinning.…”

Section: Preparation Of Pdms Fibrous Membranementioning

confidence: 99%

“…[ 19 ] The unique fi brous structure and high elasticity of PDMS fi bers allow the PDMS fi brous membrane to have high stretchability with an elastic strain as high as 400%, which is promising as an elastic substrate for development of fl exible largestrain sensors.…”

Section: Introductionmentioning

confidence: 99%

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Polypyrrole‐Coated PDMS Fibrous Membrane: Flexible Strain Sensor with Distinctive Resistance Responses at Different Strain Ranges

Niu

Zhou

Wang

et al. 2016

Macro Materials & Eng

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Large-strain fl exible sensors have been developed via combining elastic substrate (e.g., silicone elastomer) with a rigid sensing material such as nanocarbons (e.g., nanotubes [ 4,5 ] and graphene [ 6,7 ] ), metal nanowires, [ 3 ] conducting polymers [ 8 ] and piezoelectric materials, [ 9 ] through surface attachment, interlayer lamination or blending. [ 2,4,7,10 ] For example, Yamada et al. [ 4 ] prepared a strain sensor by depositing single-walled carbon nanotubes onto a polydimethylsiloxane fi lm. The sensor had a strain detection range of 0-280%, which was 50 times larger than that of conventional metal strain gauges.Fibrous materials such as yarn, [ 11 ] woven fabric, [ 12,13 ] nonwoven fi ber mat, [ 14,15 ] and electrospun fi ber membrane [ 15,16 ] have been shown great advantages in developing fl exible strain sensors. They have excellent structure stability, deformation recoverability, permeability to air/moisture and porosity, promising as substrate for wearable sensors. Mattmann et al. [ 17 ] prepared a strain sensor by incorporating a conducting fi ber, which was made of a copolymer and carbon black into a textile.Flexible sensors capable of detecting large strain are very useful for health monitoring and sport applications. Here a strain sensor is prepared by applying a thin layer of conducting polymer, polypyrrole (PPy), onto the fi ber surface of an elastic fi brous membrane, electrospun polydimethylsiloxane (PDMS). The sensor shows a normal monotonic resistance response to strain in the range of 0-50%, but the response becomes "on-off switching" mode when the strain is between 100 and 200%. Both response modes are reversible and can work repeatedly for many cycles. This unique sensing behavior is attributed to overstretching of the polypyrrole coating, unique fi brous structure, and elasticity of PDMS fi bers. It may be useful for monitoring the states where motions are only allowed in a particular range such as joint rehabilitation.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Preparation Of Pdms Fibrous Membranementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Polypyrrole‐Coated PDMS Fibrous Membrane: Flexible Strain Sensor with Distinctive Resistance Responses at Different Strain Ranges

Niu

Zhou

Wang

et al. 2016

Macro Materials & Eng

Self Cite

View full text Add to dashboard Cite

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“…Chen et al [28] measured the Young modulus and ultimate tensile strength of the nanofibers and studied the effect of crosslinking on the mechanical properties of the fibrous membranes. The membrane tensile test also was done by Niu et al [29] for single PDMS fibers and a fibrous mat made of polyvinylpyrrolidone (PVP). They showed that the elongation of the PDMS fiber mat is more than a single PDMS fiber and also the elongation of the single PDMS fiber is more than PDMS cast film.…”

Section: Introductionmentioning

confidence: 99%

Plasma based surface modification of Poly (dimethylsiloxane) electrospun membrane proper for Organ On a Chip applications

et al. 2018

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Constructing of the scaffolds for cell culture applications has long been of interest for engineering researchers and biologist. In this study, a novel process is utilized for construction of suitable membrane with a high mechanical strength and appropriate surface behavior. Poly (dimethylsiloxane) (PDMS) is electrospun into fine fibers using poly (methyl methacrylate) (PMMA) as the carrier polymer in different weight ratios.Since the surface behavior of all PDMS substrates is moderately hydrophobic (120 < contact angle (CA) < 150), the electrospun membranes with higher PDMS ratios show slightly higher hydrophilicity. Direct plasma treatment is utilized to change the interfacial wettability of the membrane. Applying plasma changes the surface energy and renders the PDMS/PMMA substrates superhydrophilic (CA<5). In the following, the mechanical properties of the membrane are evaluated by the tensile test, and the results confirm the suitable mechanical strength of electrospun PDMS for cell culturing objectives (yield stress of more than 10 kPa). Also, changing the PDMS ratio doesn't significantly affect the total stiffness of the membrane. Thus, applying the proposed fabrication protocol provides a proper platform for cell viability and proliferation which have been proven by the results of MTT assay.2

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Soft Materials with Recoverable Shape Factors from Extreme Distortion States

et al. 2016

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Elastomeric polysiloxane nanocomposites with elongations of >5000% (more than 3× greater than any previously reported material) with excellent shape recovery are presented. Highly deformable materials are desirable for the fabrication of stretchable implants and microfluidic devices. No crosslinking or domain formation is observed by a variety of analytical techniques, suggesting that their elastomeric behavior is caused by polymer chain entanglements.

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Ultrafine PDMS fibers: preparation from in situ curing-electrospinning and mechanical characterization

Abstract: Ultrafine PDMS fibers with unexpectedly-high elasticity were prepared by core–shell electrospinning and in situ curing of PDMS in electrospun core–sheath nanofibers.

Cited by 49 publications

References 27 publications

Polypyrrole‐Coated PDMS Fibrous Membrane: Flexible Strain Sensor with Distinctive Resistance Responses at Different Strain Ranges

Polypyrrole‐Coated PDMS Fibrous Membrane: Flexible Strain Sensor with Distinctive Resistance Responses at Different Strain Ranges

Plasma based surface modification of Poly (dimethylsiloxane) electrospun membrane proper for Organ On a Chip applications

Soft Materials with Recoverable Shape Factors from Extreme Distortion States

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