Surface modification and functionalization of electroactive polymer films

Kang, E. T.; H., Z.; Tan, K. L.; Zhu, Boru; Uyama, Yoshikimi; Ikada, Yoshito

doi:10.1002/(sici)1099-1581(199907)10:7<421::aid-pat887>3.0.co;2-o

Cited by 11 publications

(5 citation statements)

References 33 publications

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“…Corona discharge, one kind of room temperature plasma techniques, is extensively employed for the surface treatment of different materials 27–32. In comparison with other plasma techniques, it works well at normal atmospheric pressure and is favorable for continuous operation and the scaled‐up in industry, indicating that it can be an attractive way for the surface modification of solid materials.…”

Section: Introductionmentioning

confidence: 99%

Functionalization of Carbon Nanotubes by Corona‐Discharge Induced Graft Polymerization for the Reinforcement of Epoxy Nanocomposites

Fang

Song

et al. 2010

Plasma Processes & Polymers

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Corona discharge treatment at atmospheric pressure was applied to initiate the graft polymerization of 2‐hydroxyethyl methacrylate onto the surface of multi‐walled carbon nanotubes (MWCNTs). The results indicated that MWCNTs were encapsulated by poly(2‐hydroxyethyl methacrylate) (PHEMA). The blue shift and the increased ID/IG value of the Raman spectra confirmed the covalent attachment of PHEMA onto the surface of the MWCNTs. The grafting degree depended on the processing time of corona discharge, as demonstrated by thermogravimetric analysis. The dispersibility of the PHEMA grafted MWCNTs (PHEMA‐g‐CNTs) in ethanol was dramatically improved. It was also found that PHEMA‐g‐CNTs can improve the dynamic mechanical and mechanical properties of the nanocomposites more effectively than the pristine MWCNTs.

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Section: Introductionmentioning

confidence: 99%

Functionalization of Carbon Nanotubes by Corona‐Discharge Induced Graft Polymerization for the Reinforcement of Epoxy Nanocomposites

Fang

Song

et al. 2010

Plasma Processes & Polymers

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“…The O 2 -plasma treatment resulted in the oxidation of the carbon atoms to various extents and a decrease in the intrinsic oxidation state ([N–]/[−NH−] ratio) of the aniline polymer. The peaks corresponding to oxidized carbon bonds (CO/C–O) in the C 1s peak have a significant intensity, whereas the intensities corresponding to C–C/C–H bond types decreased. , Therefore, the O 2 -plasma introduces several O-contained functional groups onto the PANI sensing layer, which is demonstrated by ATR-FTIR and XPS spectra, and could cause different affinities between sensing layers and VOCs to generate different sensing signals; viz., more dimensions of sensing characters can be extracted for enhancing the sensor array’s ability of VOC discrimination.…”

Section: Resultsmentioning

confidence: 99%

Artificially Intelligent Olfaction for Fast and Noninvasive Diagnosis of Bladder Cancer from Urine

et al. 2022

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Globally, bladder cancer (BLC) is one of the most common cancers and has a high recurrence and mortality rate. Current clinical diagnostic approaches are either invasive or inaccurate. Here, we report on a cost-efficient, artificially intelligent chemiresistive sensor array made of polyaniline (PANI) derivatives that can noninvasively diagnose BLC at an early stage and maintain postoperative surveillance through ″smelling″ clinical urine samples at room temperature. In clinical trials, 18 healthy controls and 76 BLC patients (60 and 16 at early and advanced stages, respectively) are assessed by the artificial olfactory system. With the assistance of a support vector machine (SVM), very high sensitivity and accuracy from healthy controls are achieved, exceeding those obtained by the current techniques in practice. In addition, the recurrences of both early and advanced stages are diagnosed well, with the effect of confounding factors on the performance of the artificial olfactory system found to have a negligible influence on the diagnostic performance. Overall, this study contributes a novel, noninvasive, easy-to-use, inexpensive, real-time, accurate method for urine disease diagnosis, which can be useful for personalized care/diagnosis and postoperative surveillance, resulting in saving more lives.

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“…2. After plasma treatment, the peaks corresponding to oxidized carbon bonds (carboxylic group) appeared below 290 eV in the C 1s peak with a significant intensity, whereas the intensities corresponding to C-C or C-H bond types at < 285 eV decreased [10,22]. No significant changes were observed in the C 1s spectrum of the non-treated sample before and after exposing to urea vapor.…”

Section: Resultsmentioning

confidence: 99%

“…Up to date, only low pressure plasma treatment in glow discharge has been reported for the modification of the surface characteristics including chemical composition of PANI for improving its sensing properties [8,9]. On the PANI surface, various extend can be achieved predominantly by carbon oxidation after PANI is exposed to various low pressure plasmas.…”

Section: Introductionmentioning

confidence: 99%

Plasma-enabled sensing of urea and related amides on polyaniline

Puliyalil

Slobodian

Sedlačík

et al. 2016

Front. Chem. Sci. Eng.

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The atmospheric pressure plasma jet (APPJ) was used to enhance the sensitivity of industrially important polyaniline (PANI) for detection of organic vapors from amides. The gas sensing mechanism of PANI is operating on the basis of reversible protonation or deprotonation, whereas the driving force to improve the sensitivity after plasma modifications is unknown. Herein we manage to solve this problem and investigate the sensing mechanism of atmospheric plasma treated PANI for vapor detection of amides using urea as a model. The results from various analytical techniques indicate that the plausible mechanism responsible for the improved sensitivity after plasma treatment is operating through a cyclic transition state formed between the functional groups introduced by plasma treatment and urea. This transition state improved the sensitivity of PANI towards 15 ppm of urea by a factor of 2.4 times compared to the non-treated PANI. This plasma treated PANI is promising for the improvement of the sensitivity and selectivity towards other toxic and carcinogenic amide analytes for gas sensing applications such as improving material processing and controlling food quality.

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Surface modification and functionalization of electroactive polymer films

Cited by 11 publications

References 33 publications

Functionalization of Carbon Nanotubes by Corona‐Discharge Induced Graft Polymerization for the Reinforcement of Epoxy Nanocomposites

Functionalization of Carbon Nanotubes by Corona‐Discharge Induced Graft Polymerization for the Reinforcement of Epoxy Nanocomposites

Artificially Intelligent Olfaction for Fast and Noninvasive Diagnosis of Bladder Cancer from Urine

Plasma-enabled sensing of urea and related amides on polyaniline

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