Rheological behavior and particle suspension capability of guar gum: sodium tetraborate decahydrate gels containing cellulose nanofibrils

Sun, Chenggui; Boluk, Yaman

doi:10.1007/s10570-016-1015-x

Cited by 16 publications

(12 citation statements)

References 40 publications

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“…Figure 8 shows that the viscosity of water-soluble polyester solution decreases with the increase of the shear rate. Furthermore, it indicates that water-soluble polyester solution presents shear thinning behavior and is a typical pseudoplastic fluid, which is conducive to the sizing process of the paper surface (21,22). Figure 8 shows that the relationship between lgτ and lgγ is linear, which is in line with the characteristics of pseudo-plastic fluids.…”

Section: Rheological Behaviormentioning

confidence: 67%

Synthesis of highly branched water-soluble polyester and its surface sizing agent strengthening mechanism

Duan

Shen

et al. 2020

E-Polymers

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Solvent-free and highly branched water-soluble polyester (WPET) is prepared through self-emulsification methodology, using dimethyl terephthalate (DMT), sodium dimethyl isophthalate-5-sulfonate (SIPM), trimethylolpropane (TMP), and ethylene glycol (EG) by the transesterification and polycondensation. The WPET were first utilized as surface-sizing agents for cellulose fiber paper. The structure, average molecular weights, and physical properties of the water-soluble polyester were characterized by FTIR, 1H NMR, gel permeation chromatography (GPC), dynamic light scattering (DLS), X-ray diffraction (XRD), and dynamic rheometer. The effects of polymer structure and properties, as well as the surface sizing of the paper, were investigated. WPET displayed better surface sizing properties when it was prepared under the following conditions: –COO/–OH molar ratio of 1:2, the SIPM content of 17.98%, and TMP content of 11.10%. The relationships between the WPET structure and sized paper were clearly illustrated. The mechanical properties and water resistance of sized paper did not only depend on multi-branched hydroxyl groups of the WPET chains but also relied on the interactions among polymers and fibers, as well as the high toughness of surface sizing agent. The sizing paper possesses excellent mechanical properties as well as water resistance.

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Section: Rheological Behaviormentioning

confidence: 67%

Synthesis of highly branched water-soluble polyester and its surface sizing agent strengthening mechanism

Duan

Shen

et al. 2020

E-Polymers

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“…The tetraborate decahydrate is responsible for the gel character of the mixture. The interaction between this cross-linker with guar gum has been studied by different authors and proved to be quite efficient [4,34,36]. The type of linkage between borax and guar gum is still under debate.…”

Section: Materials Preparation and Rheometrymentioning

confidence: 99%

“…It is worth mentioning other relevant Fig. 1 Overview of offshore hydraulic fracturig process studies in which the rheological properties of gels produced with guar gum were considered [17,19,33,34,36]. In all the mentioned studies, the rheological analysis was restricted to flow curves and eventually the evaluation of G ′ and G ′′ , respectively, the storage and the loss modulus.…”

Section: Introductionmentioning

confidence: 99%

Rheological properties of a cross-linked gel based on guar gum for hydraulic fracture of oil wells

Vargas

Andrade

Loureiro

et al. 2020

J Braz. Soc. Mech. Sci. Eng.

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The hydraulic fracturing of oil wells is, supposedly, the first technique used to upgrade the oil and gas production. The main idea of this technique is to inject a fluid containing any kind of proppant into the well at a high flow rate and high pressure. One kind of fluid quite used as fracturing material is a cross-linked water-based guar gum gel. It seems that the rheological character of this kind of gel has not yet received the attention it deserves. This material is highly non-Newtonian and must be carefully analysed for further improvement in the fracturing process. We carried out different rheometric tests, which are presented in terms of the shear stress versus shear rate. The material seems to behave like a visco-elastic fluid, reasonably well described by the Jeffrey model. In addition, it is worth noting that the gel is very slippery, even on a rough surface. For this reason, we paid great attention to the maximum stress (a critical stress), above which the gel slips. We strongly believe that this stress has great practical importance for flow assurance and could be used to estimate the total pressure drop in the fracturing process.

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“…It is also called “fake water” due to its highly similar appearance to water, which is actually a sort of hydrogel. This attractive shape-adaptive behavior is attributed to its dynamic cross-linking. , These dynamic cross-linking bonds form the matrix of art water, which can tie the guar gum chains to lock the shape temporarily. When the substance is subjected to an external impact, the dynamic bonds will be broken and then re-form again at a different location, explaining its nature of high shape adaptability. , In particular, it can heal spontaneously once it receives external damage such as an external puncture .…”

mentioning

confidence: 99%

“…This attractive shape-adaptive behavior is attributed to its dynamic crosslinking. 1,2 These dynamic cross-linking bonds form the matrix of art water, which can tie the guar gum chains to lock the shape temporarily. When the substance is subjected to an external impact, the dynamic bonds will be broken and then reform again at a different location, explaining its nature of high shape adaptability.…”

mentioning

confidence: 99%

Steric Molecular Combing Effect Enables Ultrafast Self-Healing Electrolyte in Quasi-Solid-State Zinc-Ion Batteries

Liu

Chen

et al. 2022

ACS Energy Lett.

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Quasi-solid-state Zn metal batteries show great potential for nextgeneration batteries due to their inherent safety and high energy density. However, the mismatch between the static quasi-solid electrolyte surface and the dynamic Zn anode volume change will lead to inferior interfacial contact, which severely hinders the development of Zn-based batteries. Herein, a unique steric molecular combing strategy is proposed to design an ultrafast self-healing electrolyte for constructing a dynamically self-adaptive interface. Theoretical simulations and experimental characterizations reveal the steric molecular combing effect, which combs and straightens the guar gum molecular chain by inhibiting the intramolecular rotation. Concomitantly, the stretched molecular chain exposes more alcoholic hydroxyl active sites, enabling rapid dynamic cross-linking for ultrafast self-healing electrolytes. Consequently, the full battery shows an ultralong cycling lifespan of 10000 cycles with 98.5% capacity retention, and stable Zn stripping/plating is achieved at 10 mA cm −2 and 10 mAh cm −2 , respectively, pushing forward the next-generation high-performance zinc-ion battery.

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Rheological behavior and particle suspension capability of guar gum: sodium tetraborate decahydrate gels containing cellulose nanofibrils

Cited by 16 publications

References 40 publications

Synthesis of highly branched water-soluble polyester and its surface sizing agent strengthening mechanism

Synthesis of highly branched water-soluble polyester and its surface sizing agent strengthening mechanism

Rheological properties of a cross-linked gel based on guar gum for hydraulic fracture of oil wells

Steric Molecular Combing Effect Enables Ultrafast Self-Healing Electrolyte in Quasi-Solid-State Zinc-Ion Batteries

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