Super Water-Retainer Hydrogels: Crosslinked Acrylamide/Succinic Acid Copolymers

Saraydın, Dursun; Karadağ, Erdener; Güven, Olgun

doi:10.1295/polymj.29.631

Cited by 36 publications

(29 citation statements)

References 45 publications

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“…These PTC and NTC of resistivity depend on concentration and type of conductive fillers, and the nature of matrix polymer used in the composite. The composites, having PTC behavior, are mainly used as over current protectors, self‐controlled heaters, and pyroelectric sensors ; whereas, the composites, exhibiting NTC behavior, are used as antistatic and EMI shielding materials . Yasin and his coworkers studied the electrical conduction behavior of epoxy/carbon fiber composites (temperature range 25–275 K).…”

Section: Introductionmentioning

confidence: 99%

Polyimide‐carbon nanotubes nanocomposites: electrical conduction behavior under cryogenic condition

Nayak

Rahaman

Aldalbahi

et al. 2016

Polymer Engineering & Sci

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This study is aimed to investigate the electrical conduction behavior of polyimide (PI)/multiwall carbon nanotubes (CNTs) nanocomposites in cryogenic environment (temperature from 10 to 300 K) prepared by in situ polymerization technique. The experimental results of direct current (DC) electrical conductivity have been fitted with different theoretical models to check their applicability and to understand the conduction behavior for the present nanocomposite system. The PI/CNT nanocomposites show low electrical percolation threshold. Negative temperature coefficient effect of resistivity is observed for all the composites under investigation. The analysis shows that Mott's variable range hopping (VRH) model is more applicable compared to Arrhenius and Kivelson models for the present composites over the entire range of measurement temperature. The electronic transport behavior in each composite at temperature above 70 K can be ascribed to thermally activated tunneling of charge carriers through insulating barriers between CNTs; however, the electronic transport behavior at temperature below 70 K can be attributed to three dimensional VRH of charge carriers through the networks of CNTs in the polymer composite. The current–voltage characteristics of the composite show non‐ohmic behavior for temperature below 60 K and become ohmic in nature as temperature rises to 300 K. POLYM. ENG. SCI., 57:291–298, 2017. © 2016 Society of Plastics Engineers

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Section: Introductionmentioning

confidence: 99%

Polyimide‐carbon nanotubes nanocomposites: electrical conduction behavior under cryogenic condition

Nayak

Rahaman

Aldalbahi

et al. 2016

Polymer Engineering & Sci

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“…11 There are several applications for the NTCC materials such as self controlled heaters, current limiters, over current protectors and sensors. 12 The PTCC materials can be used as electromagnetic and radio frequency interference shielding and electrostatic dissipation of charges. 13 In polymeric composites, interfacial polarization is almost always present because of the different additives which make these systems heterogeneous.…”

Section: Introductionmentioning

confidence: 99%

Electrical conductivity and electric modulus of stable Kevlar^® fiber loaded HAF/NBR rubber composite

Salam

Ismail

2011

J of Applied Polymer Sci

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DC, AC conductivities and dielectric properties of high abrasion furnace carbon black (HAF)/acrylonitrile butadiene rubber (NBR) composite have been studied with varying the aramide Stable Kevlar V R fiber content, temperature, and frequency. Generally, the electrical conductivity was decreased with increasing Stable Kevlar V R fiber content, which was confirmed by the positron annihilation lifetime spectroscopy. Negative temperature coefficient of conductivity (NTCC) behavior between 353 and 413 K was detected, except for the composite containing 10 phr Kevlar which showed positive temperature coefficient of conductivity (PTCC) behavior above 383 K. These NTCC and PTCC behaviors were further manifested by differential scanning calorimetry (DSC). For the composite with 10 phr Kevlar, the interfacial polarization between the fibers and the polymeric composite can be ascribed to Maxwell-Wagner-Sillars mechanism. The (MWS) relaxation disappeared for higher fibers content. The analysis of the electric modulus in the frequency range from 1 kHz to 1 MHz shows that the interfacial relaxation obeys Cole-Davison distribution of relaxation times.

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“…The values of v 1 , χ, ρ p were taken from related literature 36. The equilibrium moduli G T values were obtained via the following equation G T = RTυ e Φ p 1/3 , where R , Φ p , and T are the gas constant, polymer volume fraction, and absolute temperature.…”

Section: Resultsmentioning

confidence: 99%

Synthesis and characterization of oil sorbers based on docosanyl acrylate and methacrylates copolymers

Farag

Elsaeed

2008

J of Applied Polymer Sci

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Docosanyl acrylate (DCA) monomer was copolymerized with different monomer feed ratios of cinnamoyloxy ethyl methacrylate (CEMA) or methyl methacrylate (MMA) monomer to produce different compositions for DCA/CEMA or DCA/MMA copolymer with low conversions. 1H NMR spectroscopy was used to confirm the copolymer structure. DCA was crosslinked with different mol % of CEMA or MMA using dibenzoyl peroxide as initiator and various weight percentages of either 1,1,1-trimethylolpropane triacrylates or 1,1,1-trimethylolpropane trimethacrylates crosslinkers. The effects of monomer feed composition, crosslinker concentration, and the hydrophobicity of the copolymer units on swelling properties of the crosslinked polymers were studied through the oil absorbency tests. The network parameters, such as polymer solvent interaction (v), effective crosslink density (t e ), equilibrium modulus of elasticity (G T ), and average molecular weight between crosslinks (M c ), were determined and correlated with the structure of the synthesized copolymers.

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Super Water-Retainer Hydrogels: Crosslinked Acrylamide/Succinic Acid Copolymers

Cited by 36 publications

References 45 publications

Polyimide‐carbon nanotubes nanocomposites: electrical conduction behavior under cryogenic condition

Polyimide‐carbon nanotubes nanocomposites: electrical conduction behavior under cryogenic condition

Electrical conductivity and electric modulus of stable Kevlar^® fiber loaded HAF/NBR rubber composite

Synthesis and characterization of oil sorbers based on docosanyl acrylate and methacrylates copolymers

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Super Water-Retainer Hydrogels: Crosslinked Acrylamide/Succinic Acid Copolymers

Cited by 36 publications

References 45 publications

Polyimide‐carbon nanotubes nanocomposites: electrical conduction behavior under cryogenic condition

Polyimide‐carbon nanotubes nanocomposites: electrical conduction behavior under cryogenic condition

Electrical conductivity and electric modulus of stable Kevlar® fiber loaded HAF/NBR rubber composite

Synthesis and characterization of oil sorbers based on docosanyl acrylate and methacrylates copolymers

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Electrical conductivity and electric modulus of stable Kevlar^® fiber loaded HAF/NBR rubber composite