Conductivity of p(AAc) Cryogel and Its Li+, Na+, and K+ Salts for NH3 Sensing

Şahiner, Nurettin; Demirci, Şahin; Sel, Kıvanç

doi:10.1007/s11664-016-4507-4

Cited by 9 publications

(3 citation statements)

References 28 publications

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“…Because of the interconnected macropores in the networked polymeric matrices resulting from the ice crystals serving as molds, the cryogels have sponge‐like morphology, elasticity, and good mechanical strength providing them effective diffusion flow and fast responses . Various type of cryogels have been used in many areas as drug delivery, column filler material, template for metal nanoparticles, template for conductive polymers, sensors, and biosensor due to their unique and superior inherently super porous and better mechanical features in comparison to common hydrogels.…”

Section: Introductionmentioning

confidence: 99%

Super macroporous poly(N‐isopropyl acrylamide) cryogel for separation purpose

Şahiner

2018

Polymers for Advanced Techs

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Polymers that can respond reversibly by changing their physical or chemical properties are recognized as stimuli-responsive polymers. The renowned temperature-sensitive polymer is poly(N-isopropyl acrylamide) (p(NIPAM)), and here, homopolymeric supermacroporous p(NIPAM)) cryogel was synthesized via cryopolymerization technique at cryogenic condition (below melting point of solvent, −18°C). Then, the prepared p(NIPAM) cryogel was characterized via scanning electron microscopy, Fourier transform infrared radiation spectrometer, and thermogravimetric analyzer.The lower critical solution temperature (LCST) value of the prepared p(NIPAM) cryogel was determined from % swelling equilibrium swellings at various temperatures, 20, 25, 30, 35, 40, 45, and 50°C, respectively. Furthermore, the pore volume and porosity of p(NIPAM) cryogels were compared below and above the LCST values.Finally, the separation capability of p(NIPAM) cryogels for some molecules such as tannic acid, gallic acid, nicotine (N), and caffeine (C) was investigated at the below and above the LCST values. KEYWORDS column filler material, p(NIPAM) cryogel, smart cryogel/hydrogel, temperature-responsive super porous cryogel

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Section: Introductionmentioning

confidence: 99%

Super macroporous poly(N‐isopropyl acrylamide) cryogel for separation purpose

Şahiner

2018

Polymers for Advanced Techs

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“…Conductive polymer cryogel composites with super and interconnected porosity and fast response to stimuli are often preferred as smart responsive materials . Based on the gas‐sensitive conductivity change, they can be used in highly sensitive gas sensor applications . For example, Sahiner et al .…”

Section: Applications In Sensorsmentioning

confidence: 99%

Properties of conductive polymer hydrogels and their application in sensors

Guo

Pan

et al. 2019

J Polym Sci B Polym Phys

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Conductive polymer hydrogels (CPHs), which combine the unique advantages of hydrogels and organic conductors, have received wide attention due to their adjustable mechanical properties, biocompatibility, self‐healing, hydrophilicity, and ease of preparation. With doping engineering and incorporation with other functional nanomaterials, CPHs have exhibited excellent physical/chemical properties. CPHs have been widely used in various electronic devices, especially in the field of sensors due to its sensitivity to external stimuli. This review summarizes recent progress in CPHs from the aspect of the CPHs' properties and their application in advanced sensor technology. © 2019 Wiley Periodicals, Inc. J. Polym. Sci., Part B: Polym. Phys. 2019, 57, 1606–1621

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“…Ayrıca, kısa difüzyon yolu, düşük basınç düşüşü (düşük geri basınç) ve adsorpsiyon ve elüsyon aşamalarında çok kısa tutma süreleri nedeniyle geleneksel kromatografide dolgu malzemesi olarak iyi bir alternatif olarak düşünülmektedir [21,22]. Bu özellikler ve kullanım alanlarına ek olarak son dönemlerde kriyojellerin elektriksel özelliklerinin incelenmesi, iletkenlik özelliklerinin geliştirilmesi ve sensör olarak potansiyel uygulamalarına yönelik literatüre kazandırılan çalışmalarda mevcuttur [13,23,24].…”

Section: Introductionunclassified

p(NIPAM) Kriyojelinin Hazırlanışı, Karakterizasyonu ve Termal Özelliklerinin p(NIPAM) Hidrojeli ile Karşılaştırmalı Olarak İncelenmesi

Şarkaya

2020

Düzce Üniversitesi Bilim Ve Teknoloji Dergisi

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Bu çalışmada ilk olarak, süper-gözenekli poli(N-izopropilakrilamit) (p(NIPAM)) kriyojeli, -16°C'de kriyojelasyon yöntemi ile sentezlenmiştir. Polimerizasyon işleminde, NIPAM monomer olarak kullanıldı ve çapraz bağlayıcı olarak N,N'-metilen-bis-akrilamid (MBAAm) tercih edildi. Reaksiyon koşullarının sağlanabilmesi açısından diğer reaktifler olarak ise reaksiyon redoks başlatıcı çifti N,N,N,N′-tetrametilen diamin (TEMED) ve amonyum persülfat (APS) varlığında polimerizasyon gerçekleştirildi. Hazırlanan p(NIPAM) kriyojellerinin şişme ve makrogözeneklilik testlerinin incelenmesinin yanı sıra, Fourier dönüşümlü kızılötesi (FTIR) spektroskopisi ve Yüzey Taramalı Elektron mikroskobu ile karakterize edildi. p(NIPAM) kriyojellerinin termal kararlılıklarının belirlenebilmesi amacıyla Termal Gravimetrik Analiz (TGA) yöntemlerine başvuruldu. NIPAM bazlı kriyojellerin karakterizasyon ölçümlerinin belirlenmesinden sonra ise kriyojellerin dahil olduğu sınıf olan hidrojellere ait bu kez NIPAM-bazlı hidrojel sentezlenerek aynı koşullar üzerinden karakterizasyon sonuçları karşılaştırıldı.

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Conductivity of p(AAc) Cryogel and Its Li+, Na+, and K+ Salts for NH3 Sensing

Cited by 9 publications

References 28 publications

Super macroporous poly(N‐isopropyl acrylamide) cryogel for separation purpose

Super macroporous poly(N‐isopropyl acrylamide) cryogel for separation purpose

Properties of conductive polymer hydrogels and their application in sensors

p(NIPAM) Kriyojelinin Hazırlanışı, Karakterizasyonu ve Termal Özelliklerinin p(NIPAM) Hidrojeli ile Karşılaştırmalı Olarak İncelenmesi

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