Interaction of hairy carboxyalkyl cellulose nanocrystals with cationic surfactant: Effect of carbon spacer

Feizi, Zahra Hosseinpour; Fatehi, Pedram

doi:10.1016/j.carbpol.2020.117396

Cited by 17 publications

(11 citation statements)

References 73 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…CNC carboxyalkylation was performed via adding different CNC to reagent ratios for 3 h at 55 °C in an alkaline condition. The details of these reactions and full characterization of the samples are provided in our previous work Table presents the characteristics of the CNC samples.…”

Section: Resultsmentioning

confidence: 99%

“…CNC samples were coated on the polyethylenimine (PEI) coated QCM-D sensors as described in previous publications. , CNC samples were then deposited on the sensors following the method discussed previously. − The discussion on the coating procedure of the sensors is available in the Supporting Information in Figure S1.…”

Section: Experimental Sectionmentioning

confidence: 99%

“…The adsorption of antibiotics onto CNC-coated surfaces was analyzed with QCM-D at varied pH of 3.0, 6.0, and 10.0 using the Q-tools software . The fundamentals of this analysis were included in the Supporting Information.…”

Section: Experimental Sectionmentioning

confidence: 99%

“…Briefly, Δ D ≤ 1 × 10 –6 is an indication of a rigid surface, while an adsorbed layer with Δ D ≥ 1 × 10 –6 and spread overtones reflect a viscoelastic layer formed on the surface . The mass adsorption analysis was performed using the Voigt model by Q-Tools software according to the literature …”

Section: Experimental Sectionmentioning

confidence: 99%

See 3 more Smart Citations

Interaction of Carboxyalkylated Cellulose Nanocrystals and Antibiotics

Feizi

Fatehi

2021

ACS Appl. Bio Mater.

Self Cite

View full text Add to dashboard Cite

Although antibiotics are beneficial for treating infections, their release into the environment has raised global concerns. In this work, the interactions of cellulose nanocrystal (CNC) derivatives with sulfamethoxazole (SMX), ciprofloxacin (CIP), and doxycycline (DOX) antibiotics were studied fundamentally. CNC was carboxyalkylated to bear different carbon chain lengths but similar negative charges on its surface. The highest level of adsorption of DOX on the carboxypantadecanated CNC (i.e., carboxyalkylated CNC with more carbon spacer, PCNC) occurred at pH 6.0, which was due to the electrostatic and π interactions along with hydrogen bonding. The contact angle and quartz crystal microbalance (QCM) adsorption analyses revealed a faster interaction and adsorption of DOX than other antibiotics on PCNC. The results also depicted the diffusion of DOX into the porous structure of CNC derivatives, especially that of PCNC. Also, a more compact adsorbed layer of DOX was formed on PCNC than on other CNC derivatives. Carboxyalkylation was observed to slightly reduce the surface area of CNC, while the antibiotic adsorption drastically increased the surface area of CNC due to their adsorption on the surface. XPS analysis revealed that carboxyalkylation significantly enhanced the

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Experimental Sectionmentioning

confidence: 99%

Section: Experimental Sectionmentioning

confidence: 99%

Section: Experimental Sectionmentioning

confidence: 99%

See 2 more Smart Citations

Interaction of Carboxyalkylated Cellulose Nanocrystals and Antibiotics

Feizi

Fatehi

2021

ACS Appl. Bio Mater.

Self Cite

View full text Add to dashboard Cite

show abstract

“…[26][27][28][29] The most common modifications to promote the adhesion between CNC and engineering thermoplastic polymers are acetylation, 30 esterification, 31,32 etherification, 33 and cationic surfactants. [33][34][35][36][37][38][39][40][41][42] Among the modifications mentioned above, esterification of CNC with fatty acids 43,44 has been reported as an efficient way to improve both the thermal properties of the CNC 45 and the mechanical properties of the resulting composite. 46 The esterification of CNC with fatty acids has never been used to reinforce PA6 despite its global high volume use in the industry.…”

Section: Introductionmentioning

confidence: 99%

A hydrophobic coating on cellulose nanocrystals improves the mechanical properties of polyamide-6 nanocomposites

Benkaddour

Demir

Jankovic

et al. 2022

Journal of Composite Materials

View full text Add to dashboard Cite

Recent demands for high-performance lightweight materials have brought researchers’ attention to various nanoparticles to reinforce polymeric materials. As such, sustainable and stiff cellulose nanocrystals (CNC) have become a popular candidate as nano-reinforcements. While CNC can offer great advantages, such as high mechanical properties and low density, it might agglomerate even in hydrophilic polymers because of its strong affinity to itself (intra and intermolecular hydrogen bonds) which prevents its broader use in industrial applications. This study aims to improve the compatibility between CNC and polyamide 6 (PA6) by a chemical modification that produces a surface polarity drastically different from non-modified CNC. The surface of CNC was rendered by the covalent coupling of stearic acid (SA) to the surface hydroxyl groups to produce stearate modified CNC (CNC SA). The effect of the modification was analyzed for CNC SA reinforced PA6 nanocomposites, and the results are compared to that of non-modified CNC reinforced PA6 samples. The addition of unmodified CNC to PA6 provided a modest improvement while the addition of CNC-SA provided substantial improvement on the modulus and tensile strength of the nanocomposite films.

show abstract

Changes in the molecular structure of cellulose nanocrystals upon treatment with solvents

Feizi

Fatehi

2021

Cellulose

View full text Add to dashboard Cite

Interaction of hairy carboxyalkyl cellulose nanocrystals with cationic surfactant: Effect of carbon spacer

Cited by 17 publications

References 73 publications

Interaction of Carboxyalkylated Cellulose Nanocrystals and Antibiotics

Interaction of Carboxyalkylated Cellulose Nanocrystals and Antibiotics

A hydrophobic coating on cellulose nanocrystals improves the mechanical properties of polyamide-6 nanocomposites

Changes in the molecular structure of cellulose nanocrystals upon treatment with solvents

Contact Info

Product

Resources

About