Synthesis and properties of poly(acrylamide-aniline)-grafted gum ghatti based nanospikes

Sharma, Kashma; Kaith, Balbir Singh; Kumar, Vijay; Kumar, Vinod; Som, Sudipta; Kalia, Susheel; Swart, H.C.

doi:10.1039/c3ra44809f

Cited by 88 publications

(112 citation statements)

References 51 publications

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“…During chain propagation crosslinker end groups may react with the polymer chain. The copolymer formed in this way consisted of a crosslinked structure [30]. Various authors reported free radical copolymerization of vinyl monomers with carbohydrate polymers using peroxydisulfate, a chain mechanism is involved due to the formation of sulphate ion radicals, which are well known ion chain carriers for the graft copolymerization [26,[31][32][33].…”

Section: Results and Discussion 31 Mechanism Of Hydrogels Formationmentioning

confidence: 99%

“…monomer molecules, which are in close vicinity of the reaction sites, become acceptor of gum ghatti radicals resulting in the chain initiation and thereafter themselves become a free radical donor to neighboring molecules [29,30]. During chain propagation crosslinker end groups may react with the polymer chain.…”

Section: Results and Discussion 31 Mechanism Of Hydrogels Formationmentioning

confidence: 99%

“…The gum ghatti showed broad peaks at 3434 and 1032 cm -1 , characteristics of the saccharide structure (due to -OH stretching) [44]. The peaks at 2925 and 1622 cm -1 was assigned to the stretching vibration of the -CH group and -C=O stretching of a carbonyl group respectively [30]. Another characteristic peak of the acid group was found at 1422 cm -1 due to -OH bending.…”

Section: Ftir Spectroscopymentioning

confidence: 96%

“…Interestingly, the peaks after grafting shifted to a higher wavenumber region indicating the formation of crosslinked hydrogel. On the other hand FTIR spectrum of Ggcl-poly(AAm-ipn-aniline) illustrated the characteristics peaks of PANI, as well as Gg-cl-poly(AAm) [30,45]. The bands at 1496 and 1574 cm -1 represent the benzoid and quinoid ring vibration of PANI, respectively.…”

Section: Ftir Spectroscopymentioning

confidence: 99%

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Gum ghatti based novel electrically conductive biomaterials: A study of conductivity and surface morphology

Sharma¹,

Kaith²,

Kumar³

et al. 2014

Express Polym. Lett.

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Section: Results and Discussion 31 Mechanism Of Hydrogels Formationmentioning

confidence: 99%

Section: Results and Discussion 31 Mechanism Of Hydrogels Formationmentioning

confidence: 99%

Section: Ftir Spectroscopymentioning

confidence: 96%

Section: Ftir Spectroscopymentioning

confidence: 99%

See 2 more Smart Citations

Gum ghatti based novel electrically conductive biomaterials: A study of conductivity and surface morphology

Sharma¹,

Kaith²,

Kumar³

et al. 2014

Express Polym. Lett.

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“…Şekil 3.a'da akrilamid hidrojellere ait FTIR spektrumu incelendiğinde 1650 ve 1540 cm -1 'deki pikler sırasıyla -CONH2 grubunun amid I ve amid II için C=O gerilme titreşim bantlarına, 1600 cm -1 'deki pikin N-H düzlem içi eğilme titreşimine ait olduğu, 1446, 1416 ve 1113 cm -1 'deki bantların ise sırasıyla amid II'nin N-H düzlem içi eğilme, C-N gerilme ve C-O gerilme titreşimlerine ait olduğu düşünülmektedir [Aktaş Uygun, D., Uygun, M., Akgöl, S., & Denizli, A. (2015), Kaith, B. S., Jindal, R., Sharma, R. (2015), Sharma, K. Et al. (2013)].…”

Section: Hidrojellerin Karakterizasyonuunclassified

The Use of Acrylamide-Crotonic Acid Nested Network Structured Hydrogels for Adsorption of the Methylene Blue

İnal¹,

Tunalı²,

Yi̇ği̇toğlu³

2017

Uluslararası Muhendislik Arastirma Ve Gelistirme Dergisi

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ÖzBu çalışmada akrilamid-krotonik asit hidrojelleri metilen mavisi boyasının gideriminde adsorban olarak kullanılmıştır. Boyanın adsorpsiyonuna pH'nın, krotonik asit yüzdesinin, başlangıç boya derişiminin ve tekrar kullanım sayısının etkisi araştırılmıştır. Yalnızca akrilamidle hazırlanan hidrojellerde pH'nın artması ile adsorpsiyonda bir miktar artış görülmüştür. Akrilamid-krotonik asit hidrojellerinde pH 7, 9 ve 10'da adsorpsiyon hemen hemen yakın bulunmuş, buna karşılık pH 8'de belirgin bir azalma gözlenmiştir. Hidrojellerde bulunan krotonik asit yüzdesinin artması ile adsorpsiyon belirgin bir şekilde artmıştır. Ayrıca adsorbsiyon-desorpsiyon çalışmaları sonucu göstermektedir ki, 20 kere tekrar kullanımdan sonra bile hidrojellerin adsorpsiyon kapasitesi hemen hemen hiç azalmamıştır. Sonuçlar akrilamid-krotonik asit hidrojellerin endüstriyel ölçekte tekstil atık sularından boyaların gideriminde adsorban olarak kullanılabileceğini göstermektedir. Anahtar Kelimeler"akrilamid, krotonik asit, hidrojel, metilen mavisi, adsorpsiyon, tekstil" AbstractIn this study acrylamide-crotonic acid hydrogels are used as adsorbent for removal of methylene blue. The effects of pH, crotonic acid percentage, initial dye concentration and reusage number on the adsorption of the dye are investigated. When the pH increased adsorption also slightly increased with the hydrogels made up of only acrylamide. With the acrylamide crotonic acid hydrogels adsorption rates are similar in pH 7,9 and 10 but there is a significant decrease in pH 8. Adsorption increases with the increasing crotonic acid percentage in hydrogels. In addition, the adsorption-desorption results showed that the adsorption capacity of the hydrogel was not changed even after 20 times repeated use. Results show that acrylamide-crotonic acid hydrogels can be used as adsorbent for dye removal in industrial textile waste water.

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Biodegradability of bio‐based and synthetic hydrogels as sustainable soil amendments: A review

Adjuik

Nokes

Montross

2023

J of Applied Polymer Sci

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Superabsorbent polymers (SAPs), sometimes known as hydrogels, have been proposed as soil amendments to enhance soil water management. But the performance of SAPs as soil amendments depends on their stability in soil. Bio‐based SAPs have been praised as environmentally sustainable due to their apparent fast biodegradation relative to synthetic SAPs. But the fast biodegradation of bio‐based SAPs may come at a cost to their long‐term performance for repeated absorption and release of water in the soil. The purpose of this review is to (i) concisely summarize the methods and mechanisms involved in the biodegradation of different bio‐based and synthetic SAPs, (ii) critically review studies conducted on the biodegradability of bio‐based and synthetic SAPs when used as soil amendments, and (iii) discuss the implications of the biodegradability of bio‐based and synthetic SAPs on their physical properties and stability in soil and (iv) identify potential research directions. Understanding the biodegradability of synthetic compared to bio‐based SAPs and their advantages and disadvantages as soil amendments is important to researchers and farmers when choosing a specific type of SAPs as an agricultural soil amendment.

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Synthesis and properties of poly(acrylamide-aniline)-grafted gum ghatti based nanospikes

Cited by 88 publications

References 51 publications

Gum ghatti based novel electrically conductive biomaterials: A study of conductivity and surface morphology

Gum ghatti based novel electrically conductive biomaterials: A study of conductivity and surface morphology

The Use of Acrylamide-Crotonic Acid Nested Network Structured Hydrogels for Adsorption of the Methylene Blue

Biodegradability of bio‐based and synthetic hydrogels as sustainable soil amendments: A review

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