Cotton Yarn Sizing by Acrylamide Grafted Starch Copolymer

Djordjević, S.; Kovačević, Stana; Nikolić, Ljubiša; Miljković, Miomir; Djordjević, Dragan

doi:10.1080/15440478.2013.874963

Cited by 18 publications

(6 citation statements)

References 19 publications

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“…As would be expected, some new absorption bands were observed in the spectra of the grafted starches besides the absorption bands of ACS. The new bands at 1454 and 1668 cm −1 on the curve (b) of S‐ g ‐PAM corresponded to the stretching absorption of CN and the stretching absorption of carbonyl, respectively. For the spectrum of S‐ g ‐PMA, the band at 1738 cm −1 was ascribed to the asymmetric stretching absorption of ester groups in the MA units of PMA branches.…”

Section: Resultsmentioning

confidence: 97%

Desizability of the Grafted Starches Used as Warp Sizing agents

Liu

Zhu

et al. 2017

Starch Stärke

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An attempt is made to examine the effect of the consitituent units in the branches grafted onto the backbones of starch on the desizability of grafted starches for warp sizing. The starches investigated include starch‐g‐polyacrylamide, starch‐g‐poly(acrylic acid), starch‐g‐polyacrylate, and starch‐g‐polymethacrylate, which are synthesized via graft copolymerization in water using Fe2+‐H2O2 initiators. The desizability is evaluated by enzyme, alkali, and oxidant desizings in terms of desizing efficiency, water swellability of starch film, and the time for breaking the starch film in water. It is found that the constituent units play an important role in desizability. Hydrophilic units are superior to hydrophobic ones in improving desizability. For the (meth)acrylate units, the increase in the number of carbon atoms in alkyl esters and the presence of α‐methyl show adverse impact on desizability. An increase in the grafting ratio of starch‐g‐polyacrylamide favors improvement of the desizabity whereas the increase in the ratio of starch‐g‐poly(methyl acrylate) reduces the desizabity. Of the three desizing methods considered here, oxidant and enzyme desizings have superior desizability to alkali one.

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Section: Resultsmentioning

confidence: 97%

Desizability of the Grafted Starches Used as Warp Sizing agents

Liu

Zhu

et al. 2017

Starch Stärke

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“…Furthermore, the wear resistance increased rate of AHS-U is higher than that of the grafted hydrolyzed starch (GHS) and HS reported in other research. 48…”

Section: Resultsmentioning

confidence: 99%

Oxidation and cross-linking to improve stability and sizing properties of cassava starch with ammonium persulfate-assisted hexamethylenetetramine

Wang,

Qian,

et al. 2023

Textile Research Journal

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An oxidation cross-linking modified cassava starch (AHS-U) with high-viscosity stability and good film-forming properties was synthesized by oxidation cross-linking reaction, which used ammonium persulfate (APS) as the oxidant, hexamethylenetetramine (HMT) as the cross-linking agent and urea as an assistant. The results of Fourier transform infrared spectroscopy and nuclear magnetic resonance showed that compared with cassava starch, APS oxidized starch exhibited carboxyl characteristic peaks in its structure, and the hydroxyl proton peak that was connected at the C6 position basically disappeared in the APS-HMT modified cassava starch (AHS). The cross-linking agent HMT released formaldehyde under heating conditions to cross-link oxidized starch. The urea formed hydrogen bonds with hydroxyl groups in the starch while adsorbing residual formaldehyde, which improved the viscosity stability of the sizing agent. When the APS dosage was 0.4% (the carboxyl content was 0.30%), the HMT dosage was 0.35% (the sedimentation volume was 7.8 mL) and the urea dosage was 2%, the viscosity stability of the AHS-U sizing agent was good under high-temperature conditions (97.12%), and the elongation of the sizing film reached 2.97%. The AHS-U sizing agent can improve the tensile properties and wear resistance of cotton yarn and has a good desizing efficiency. This study overcomes the toxic substance emissions caused by traditional aldehyde cross-linking agents, improves the viscosity stability of the starch sizing agent and provides a new approach to improving the viscosity stability and film-forming properties of starch sizing agents.

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“…In the preparation of fibers for textile applications, it is conventional practice to apply materials to the fiber surfaces, i.e. sizing (Goswami et al 2004;Djordjević et al 2014). One commonly used sizing agent, according to Goswami et al (2004), is carboxymethylcellulose (CMC), a cellulose derivative.…”

Section: Sizing Of Textile Fibers With Hydrophilic Materialsmentioning

confidence: 99%

Detergency mechanisms and cellulosic surfaces: A review

Hubbe

Szlek

Vera

2022

BioRes

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The release of soils and impurities from cellulosic surfaces plays a critical role in such processes as the laundering of clothes and the deinking of wastepaper pulps. This article reviews publications that provide evidence about factors that affect such release and the mechanisms by which such factors operate. In general, cellulosic substrates provide advantages for the release of contaminants due to their hydrophilic nature and due to their permeability, allowing the transport of surfactants to contact interfaces with dirt. However, the same permeability of cellulosic material also provides opportunities for contaminants to work themselves into internal crevices and pores, from which they are difficult to remove. The article also reviews aspects of theory related to detergency and how those theories relate to the laundering, deinking, and purifying of substrates based on cellulose and related plant materials. Cellulose and some of its derivatives also can play a role in detergent formulation, especially as builders or as finishes placed on textile surfaces, which sometimes aid in the release of dirt.

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Cotton Yarn Sizing by Acrylamide Grafted Starch Copolymer

Cited by 18 publications

References 19 publications

Desizability of the Grafted Starches Used as Warp Sizing agents

Desizability of the Grafted Starches Used as Warp Sizing agents

Oxidation and cross-linking to improve stability and sizing properties of cassava starch with ammonium persulfate-assisted hexamethylenetetramine

Detergency mechanisms and cellulosic surfaces: A review

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