Compatibilization of poly(vinylidene fluoride)/natural rubber blend by poly(methyl methacrylate) modified natural rubber

Salaeh, Subhan; Banda, Thaksaporn; Pongdong, Vibhavadi; Wießner, Sven; Das, Amit; Thitithammawong, Anoma

doi:10.1016/j.eurpolymj.2018.08.007

Cited by 23 publications

(14 citation statements)

References 44 publications

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“…However, the good reproductivity and stability of the response pattern are also well maintained, making the prepared material applicable for monitoring a range of physiological signals with high frequency. , The response time of the porous nanocomposites was further evaluated. As depicted in Figure d, the response time of the porous composite is estimated to be 60 ms when a tiny stretch/release (5% strain) is loaded at a high rate (500 mm/min), showing rapid response characteristics compared with other recently reported works. ,,, Furthermore, the long-term cyclic strain behavior of porous nanocomposites was also tested to verify their durability in practical applications . As depicted in Figure e, the cyclic strain response pattern remains almost unchanged in each cycle for the sensor under 40% strain for 10,000 cycles, indicating excellent stability and durability.…”

Section: Resultsmentioning

confidence: 66%

“…7,20,23,37 Furthermore, the long-term cyclic strain behavior of porous nanocomposites was also tested to verify their durability in practical applications. 63 As depicted in Figure 6e, the cyclic strain response pattern remains almost unchanged in each cycle for the sensor under 40% strain for 10,000 cycles, indicating excellent stability and durability. Furthermore, the strain-sensing performances of the sensor were compared with other reported works.…”

Section: Resultsmentioning

confidence: 81%

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Wearable Strain Sensors Based on a Porous Polydimethylsiloxane Hybrid with Carbon Nanotubes and Graphene

Zhou

et al. 2021

ACS Appl. Mater. Interfaces

155

110

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High-performance flexible strain sensors are urgently needed with the rapid development of wearable intelligent electronics. Here, a bifiller of carbon nanotubes (CNTs) and graphene (GR) for filling flexible porous polydimethylsiloxane (CNT-GR/PDMS) nanocomposites is designed and prepared for strain-sensing applications. The typical microporous structure was successfully constructed using the Soxhlet extraction technique, and the connected CNTs and GR constructed a perfect threedimensional conductive network in the porous skeleton. As a result, the stretchability and sensitivity of the CNT-GR/PDMS-based strain sensors were well regulated based on the porous structure and the typical synergistic conductive network. Based on the destruction effect of the brittle synergistic conductive network located in the outer and inner layers of the cell skeleton and the contact effect between adjacent cells in different strain ranges, the prepared CNTs-GR/PDMS-based strain sensor exhibited superior gauge factors of 182.5, 45.6, 70.2, and 186.5 in the 0−3, 3−57, 57−90, and 90−120% strain regions, respectively. In addition, this material also exhibited an ultralow detection limit (0.5% strain), a fast response time (60 ms), good stability and durability (10,000 cycles), and frequency-/strain-dependent sensing performances, making it active for the detection of various external environments. Finally, the prepared porous CNTs-GR/PDMS-based strain sensor was attached to the skin to detect various human motions, such as wrist bending, finger bending, elbow bending, and knee bending, thereby demonstrating wide application prospects in smart wearable devices.

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Section: Resultsmentioning

confidence: 66%

Section: Resultsmentioning

confidence: 81%

Wearable Strain Sensors Based on a Porous Polydimethylsiloxane Hybrid with Carbon Nanotubes and Graphene

Zhou

et al. 2021

ACS Appl. Mater. Interfaces

155

110

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“…Increasing the temperature of the water bath to 70 °C and stirring the mixture had been performed done for 2 h. The solution of azoisobutyronitrile (AIBN) was prepared in toluene. Methyl methacrylate and AIBNS were added simultaneously and separately to the mixture and stirred for another 30 min in a water bath keeping the temperature not more than 70 °C because at high-temperature decomposition of chloroprene rubber takes place or grafting is not possible at high temperature as clear from the literature that maximum grafting of MMA is possible at 70 °C (Salaeh et al 2018). After the successful grafting of methyl methacrylate onto chloroprene rubber backbone, a series of Copolymer nanocomposites were prepared by adding different amounts of reduced graphene oxide (rGO).…”

Section: Synthesis Of Co-polymer (Pmma Grafted Chloroprene)mentioning

confidence: 99%

Novel crystalline reduced graphene oxide/adhesive nanocomposites for enhanced electrical, thermal, dielectric properties and electromagnetic energy absorption application

et al. 2022

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At present times electromagnetic (EM) pollution is increasing due to a lot of progress and achievements in the electronics field. There is a dire need to develop materials that have greater EM energy absorption/emission properties. We report here the synthesis of a nanocomposite of carbonaceous material, reduced graphene oxide (rGO) with Chloroprene (CP) grafted polymethyl methacrylate (CP-g-pMMA), i.e. rGO/CP-g-pMMA. FTIR confirms the grafting of Chloroprene rubber and the presence of rGO. XRD shows the crystallinity of rGO alone and in the composites as well. SEM images showed smooth texture for neat polymer while nanocomposite showed a leafy appearance of the reduced graphene oxide (rGO). The viscosity of pure CP was 3740 cps while CP-g-pMMA was 1644 cps. A slight decrease was observed after the addition of rGO. Enhancement in thermal properties from 264 °C to 269 °C showed that the composites were thermally more stable than the virgin CP and CP-g-pMMA. The permittivity and alternating current conductivity were checked by Radio Frequency (RF) impedance and material analyzer in the range of (1–1000 MHz) X-band and (1–3 GHz) S-band. The nanocomposites showed the lowest percolation (0.32 vol. %) yet reported. The nanocomposites showed low real and absolute permittivity. The electrical and permittivity analysis of the rGO/CP-g-pMMA nanocomposites revealed that they can be potential candidates for their applications in electronic devices as an absorber.

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“…(b), which is attributed to reduced crystallinity of PA6 in the TPE blends . Moreover, it can be observed that the crystallization peak of PA6 in the TPE blends shifted to lower temperatures as the XHNBR content increased, which clearly suggests enhanced interfacial interactions …”

Section: Resultsmentioning

confidence: 91%

Toward superior applications of thermoplastic elastomer blends: double T_g increase and improved ductility

Burgoa

Hernandez

Vilas

2019

Polymer International

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With the aim of curbing air pollution and addressing climate change, the use of low density thermoplastic elastomers (TPEs) in transportation could be a useful way to lighten the vehicle weight. For that, melt blending of high performance rubber and thermoplastics is an attractive way of preparing high performance TPEs. In this work, several TPEs have been prepared by melt blending of hydrogenated acrylonitrile butadiene rubber (HNBR) with polyamide 6 (PA6), adding different amounts of carboxylated HNBR (XHNBR) as compatibilizer: 40/60/0, 40/42/18, 40/30/30 and 40/18/42 (PA6/HNBR/XHNBR). The resulting blends were investigated using melt rheological measurements, morphological observations (scanning electron microscopy and polarized optical microscopy), dynamic mechanical analysis, differential scanning calorimetry analysis and mechanical tests. A biphasic morphology was noted for all TPEs. An increase in XHNBR amount changes the morphology from dispersed to co-continuous. This evolution is explained by the change in the melt rheological properties of the HNBR/XHNBR rubber phase. Moreover, the introduction of 42% XHNBR resulted in an increase in the glass transition temperature of both rubber and PA6 phases. This double T g increase phenomenon was attributed to the interfacial interactions between the carboxyl groups in XHNBR and the amine end groups in PA6. Additionally, thermal analysis revealed a reduced crystallinity of PA6 in the blend, which corresponds to enhanced interfacial interactions. The interfacial adhesion and the co-continuous morphology resulted in an improved ductility. This study reveals the possibility of obtaining TPE blends with tunable thermal and mechanical properties by controlling both interfacial interactions and morphology.

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Compatibilization of poly(vinylidene fluoride)/natural rubber blend by poly(methyl methacrylate) modified natural rubber

Cited by 23 publications

References 44 publications

Wearable Strain Sensors Based on a Porous Polydimethylsiloxane Hybrid with Carbon Nanotubes and Graphene

Wearable Strain Sensors Based on a Porous Polydimethylsiloxane Hybrid with Carbon Nanotubes and Graphene

Novel crystalline reduced graphene oxide/adhesive nanocomposites for enhanced electrical, thermal, dielectric properties and electromagnetic energy absorption application

Toward superior applications of thermoplastic elastomer blends: double T_g increase and improved ductility

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Compatibilization of poly(vinylidene fluoride)/natural rubber blend by poly(methyl methacrylate) modified natural rubber

Cited by 23 publications

References 44 publications

Wearable Strain Sensors Based on a Porous Polydimethylsiloxane Hybrid with Carbon Nanotubes and Graphene

Wearable Strain Sensors Based on a Porous Polydimethylsiloxane Hybrid with Carbon Nanotubes and Graphene

Novel crystalline reduced graphene oxide/adhesive nanocomposites for enhanced electrical, thermal, dielectric properties and electromagnetic energy absorption application

Toward superior applications of thermoplastic elastomer blends: double Tg increase and improved ductility

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Toward superior applications of thermoplastic elastomer blends: double T_g increase and improved ductility