Insight into the dispersive mechanism of Carboxylated Nanofibrilllated cellulose for individual montmorillonite in water

Sun, Chuan; Fang, Zhiqiang; Qin, Famei; Chen, Kaihuang; Wang, Jingyu; Ding, Zixian; Qiu, Xueqing

doi:10.1016/j.compositesb.2019.107399

Cited by 9 publications

(6 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This indicated that the number of homogenization cycles also had an important effect on the homogeneity of the cellulose microfibrils suspensions. As the homogenization pressure was increased up to 25000 psi, the lignin-containing aqueous cellulose microfibrils suspensions exhibited the lowest TSI values, indicating that the stability increased significantly and in agreement with the particle size results described above (Sun et al 2019). Previous studies also showed that high-pressure homogenization is an effective tool to increase the stability of cellulose systems (Lin et al 2015).…”

Section: Dispersion Stability Analysissupporting

confidence: 86%

Effect of lignin-containing highly fibrillated cellulose on the adsorption behavior of an organic dye

Yan

Yi²,

Liu

et al. 2021

BioRes

View full text Add to dashboard Cite

The morphological properties and particle size characteristics of micro- and nanofibrillated cellulose (NFC) and lignin-containing NFC (LNFC) produced by a microfluidizer processor were investigated. The effects mechanism of lignin-containing on the adsorption of NFC and the stable properties of organic dyes suspension were also studied. The results showed that the preparation process and final performance of NFC were affected by the key factors including lignin, homogenization pressure, and number of homogenization cycles. The increase in the homogeneity of the fibrillated cellulose was minor for the NFC samples, while LNFC samples showed a larger increase in the homogeneity of the particle size distribution. The influence of lignin was reflected both in improved fibrillation efficiency and in the final organic dye dispersion properties achieved by LNFC addition, primarily observed as deceased particle sizes and fibril dimensions. This study indicated that pollution-free dispersion of organic dyes can be realized through the application of lignin-containing NFC.

show abstract

Section: Dispersion Stability Analysissupporting

confidence: 86%

Effect of lignin-containing highly fibrillated cellulose on the adsorption behavior of an organic dye

Yan

Yi²,

Liu

et al. 2021

BioRes

View full text Add to dashboard Cite

show abstract

“…These phenomena confirm that MMT nanosheets do not randomly aggregate during the formation process, but prefer to be aligned regularly. Such a high transparency and a high nanofiller content surpass the previous results (Figure b-e). − …”

Section: Results and Discussioncontrasting

confidence: 71%

“…The nano-MMT/CbimPP aqueous dispersion was obtained. The size and thickness of MMT in the MMT/CbimPP aqueous dispersion are 100–1000 nm and 1–2 nm (Figure c,d and Figure S2), respectively, indicating that the MMT nanosheets are single-layer structure. , According to the content of CbimPP added into MMT aqueous dispersion, the CbimPP/MMT samples are labeled as CPM-1, CPM-5, CPM-10, CPM-25, and CPM-50, which represent 1 wt%, 5 wt%, 10 wt%, 25 wt%, and 50 wt% of CbimPP in the mixture of CbimPP and MMT before dispersion. With the increase of CbimPP content, the size of MMT decreases rapidly compared to the original MMT (Figure S3), the zeta potential gradually increases (Figure S4), and the MMT interlayer distance increases markedly at first and subsequently decreases (Figure e).…”

Section: Results and Discussionmentioning

confidence: 99%

Seashell-Inspired Switchable Waterborne Coatings with Complete Biodegradability, Intrinsic Flame-Retardance, and High Transparency

et al. 2023

View full text Add to dashboard Cite

Inspired by the "brick-and-mortar" structure and the whole lifecycle eco-friendliness of seashells, we have constructed a proof-of-concept and environmentally friendly coating with switchable aqueous processability, complete biodegradability, intrinsic flame retardance, and high transparency, via using natural biomass and montmorillonite (MMT). We first designed and synthesized cationic cellulose derivatives (CCD) as the macromolecular surfactants, which effectively exfoliated MMT to obtain nano-MMT/CCD aqueous dispersions. Subsequently, via a simple spray-coating process and a post-treatment process with a salt aqueous solution, the transparent, hydrophobic, and flame-retardant coating was fabricated with a "brick-and-mortar" structure. The resultant coating exhibited an extremely low peak heat release rate (PHRR) of only 17.3 W/g, which is 6.3% of cellulose PHRR. Moreover, it formed a lamellar and porous structure once ignited. Thus, this coating could effectively protect combustible materials from fire. In addition, the coating had a high transparency (>90%) in the range of 400−800 nm. After use, the waterresistant coating was converted into a water-soluble material by using a hydrophilic salt aqueous solution, which then could be easily removed by water. Furthermore, the CCD/nano-MMT coating was completely degradable and nontoxic. Such a switchable and multifunctional coating with whole lifecycle environmental-friendliness exhibits huge application potential.

show abstract

“…Hence, the approaching F/D curves are tted by DLVO theory according to our previous work. (Sun et al 2019) As shown in Figure 6f, there is a strong electrostatic repulsion between the CNFs and the MMTs in pure water. When the AFM force measurement performs in aqueous PEI solution, the interfacial interaction gradually changes from electrostatical repulsion to attractive force, which suggests that PEI can serve as a cationic polymer to effectively enhance the electrostatic attractive interaction between the CNFs and the MMTs.…”

Section: Page 8/19mentioning

confidence: 89%

Transparent montmorillonite/cellulose nanofibril nanocomposite films: the influence of exfoliation degree and interfacial interaction

Sun

Wang

et al. 2022

Cellulose

Self Cite

View full text Add to dashboard Cite

To obtain high performance of nanocomposite lms made of cellulose nano brils (CNFs) and montmorillonites (MMTs), highly ordered nanostructures and abundant interfacial interactions are of extreme importance, especially for CNF lm with high MMT content. Here, we tend to unveil the in uence of exfoliation degree of MMTs and their interfacial interactions with CNFs on the properties of ensuing nanocomposite lms. Monolayer MMTs prefer to form highly ordered nanostructure during water evaporation induced self-assembly. The obtained nanocomposite lm with 30 wt% monolayer MMTs exhibits a tensile strength of 132 MPa, a total light transmittance of 90.2% (550nm), and water vapor transmission rate (WVTR) of 41.5 g•mm/m2•day, better than the lm made of original bulk MMTs and CNFs (30 MPa strength, 60% transparency, and 78.7 g•mm/m2•day WVTR). Moreover, the physical properties (153 MPa strength and 20.9 g•mm/m2•day WVTR) of nanocomposite lm can be further enhanced by constructing ionic interactions between the monolayer MMT and CNF using 0.5 wt% cationic polyethylenimine (PEI). However, as the amount of PEI continues to increase, its performance will be deteriorated dramatically because of the disordered orientation of monolayer MMTs. This work could provide an insight into the fabrication of high performance MMT/CNF nanocomposite lm for advanced applications.

show abstract

Insight into the dispersive mechanism of Carboxylated Nanofibrilllated cellulose for individual montmorillonite in water

Cited by 9 publications

References 23 publications

Effect of lignin-containing highly fibrillated cellulose on the adsorption behavior of an organic dye

Effect of lignin-containing highly fibrillated cellulose on the adsorption behavior of an organic dye

Seashell-Inspired Switchable Waterborne Coatings with Complete Biodegradability, Intrinsic Flame-Retardance, and High Transparency

Transparent montmorillonite/cellulose nanofibril nanocomposite films: the influence of exfoliation degree and interfacial interaction

Contact Info

Product

Resources

About