Phosphorylated-CNC/modified-chitosan nanocomplexes for the stabilization of Pickering emulsions

Baek, Jiyoo; Wahid-Pedro, Farihah; Kim, Kayeon; Kim, Kayoung; Tam, Kam Chiu

doi:10.1016/j.carbpol.2018.11.006

Cited by 72 publications

(25 citation statements)

References 40 publications

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“…The estimated average size for CPNC3 sample was 3.85 nm in width and 31.23 nm in length. As well with its high aspect ratio of about 8.1, it could be favorable for high surface reactivity when processing material fabrication [ 11 , 23 ]. From EDX analysis ( Figure 2 b), CPNC3 revealed carbon and oxygen as the major elements in the composition, implying the typical characteristic of NCC structure.…”

Section: Resultsmentioning

confidence: 99%

“…It became sharper from CPNC1 to CPNC3, revealing the improved exposure of cellulose component [ 26 ]. Besides this, there was a notable 1636 cm −1 peak with its shoulder band at about 1692 cm −1 , proving those samples possessed hydrophilic property for interacting water molecules [ 23 ]. The residual components such as hemicellulose and lignin were also substantially removed from all samples with the absence of peaks at 1741 cm −1 (ester group stretching) and 1534 cm −1 (C=C aromatic vibration), respectively [ 27 ].…”

Section: Resultsmentioning

confidence: 99%

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Isolation and Production of Nanocrystalline Cellulose from Conocarpus Fiber

et al. 2021

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Conocarpus fiber is a lignocellulosic biomass rich in cellulose potentially used for producing nanocrystalline cellulose (NCC), a biomaterial extensively employed in various application fields. In the present work, different hydrolysis times of 10, 20 and 30 min were applied to chemically pre-treated Conocarpus fiber to produce CPNC1, CPNC2, and CPNC3 particles. With acid hydrolysis treatment, the yield of NCC product was successfully retained at 17–19%. Individual, rod-like shapes of NCC particles could be clearly observed under microscopy examination. From chemical composition analysis, a relatively pure cellulose compartment was produced for all NCC samples with substantial removal of lignin and hemicellulose. The physicochemical analysis proved that each nanoparticle sample possessed strong cellulose crystalline structure. For thermal analyses, the heat resistance of NCCs was gradually enhanced with the increased hydrolysis times. Therefore, the extracted NCC product from Conocarpus fiber could be a green nano-filler for developing nanocomposite material in the future.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Isolation and Production of Nanocrystalline Cellulose from Conocarpus Fiber

et al. 2021

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“…This ratio reflects the polymer chain architecture and spatial density distribution of colloidal particles . In general, for a uniform hard‐sphere, the value of R g / H y is approximately 0.774, for a hyperbranched polymer cluster or a soft sphere, this value is 1.0–1.3, and for flexible random coil chains, the value is 1.5–1.8 . The shape factor value >2 corresponds to a rigid‐rod structure .…”

Section: Resultsmentioning

confidence: 99%

“…[52] In general, for a uniform hard-sphere, the value of R g /H y is approximately 0.774, for a hyperbranched polymer cluster or a soft sphere, this value is 1.0-1.3, and for flexible random coil chains, the value is 1.5-1.8. [53][54][55] The shape factor value > 2 corresponds to a rigid-rod structure. [53][54][55] As seen in Table 1, HL displayed a rigid-rod shape structure with R g /H y of 2.02.…”

Section: Properties Of Cationic Hydrolysis Ligninsmentioning

confidence: 99%

“…[53][54][55] The shape factor value > 2 corresponds to a rigid-rod structure. [53][54][55] As seen in Table 1, HL displayed a rigid-rod shape structure with R g /H y of 2.02. However, after the polymerization reaction, the morphology of HL-METAC and HL-MAPTAC slightly transformed from a rod-like to flexible random coil chains.…”

Section: Properties Of Cationic Hydrolysis Ligninsmentioning

confidence: 99%

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Polarity of Cationic Lignin Polymers: Physicochemical Behavior in Aqueous Solutions and Suspensions

Sabaghi

Fatehi

2020

ChemSusChem

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The structure of cationic monomers can significantly impact the polarity of lignin after polymerization. Cationic hydrolysis lignin (CHL) polymers were produced by polymerizing hydrolysis lignin (HL) with [3‐(methacryloylamino)propyl] trimethylammonium chloride (MAPTAC) or [2‐(methacryloyloxy)ethyl] trimethyl ammonium chloride (METAC). The METAC monomer has an oxygen atom, with larger electronegativity, in its molecular structure, whereas the MAPTAC monomer contains a nitrogen atom, as well as an extra nonpolar CH2 group, facilitating investigation into the effects of the polarity of CHLs on their physicochemical performance in an aqueous system. CHL polymers are analyzed and their interactions with clay particles are determined in colloidal systems. CHLs are designed to have similar charge densities (2.1–2.2 mmol g−1) and molecular weights (55000–60000 g mol−1 ). The hydrodynamic radius (Hy) and radius of gyration, (Rg) of HL‐METAC are larger than those of HL‐MAPTAC, implying a more 3‐dimensional structure of HL‐METAC in aqueous solution. The stability ratio of kaolin particles affirms the better performance of HL‐METAC in comparison to HL‐MAPTAC, which reflects the better flocculation efficiency of HL‐METAC. The results also reveal that salt and urea aqueous solutions affect the Hy, Rg, and configuration of CHL polymers, which alters the flocculation efficiency of HL‐METAC and HL‐MAPTAC polymers in kaolin suspensions.

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