Enrichment of Cd2+ from water with a calcium alginate hydrogel filtration membrane

Zhao, Yujie; Zhao, Kongyin; Li, Ye; Liu, Liang; Zhang, Xinxin; Li, Jingang; Chen, Min; Wang, Xiaolei

doi:10.1007/s11431-017-9142-7

Cited by 13 publications

(9 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…According to the equation (16), the constitutive stress-strain relationship can therefore be expressed as: 2 3 3 0 0 0 1 3 3 3 3 2 3 3 0 0 0 0 3 3 2/3 3 3 3/5 0 0 0 0 1 3 4 2 4 3 1 According to equation (17), the capability of the DN hydrogels to resist to an external force is originated from a coupling effect of the two networks. The mechanical energy is transformed into mixed free energy and elastic free energy of the first hydrotropic network, whereas it is transformed into elastic free energy of the second hydrophobic network.…”

Section: Modelling Of Cooperative Dynamics In Dn Hydrogelmentioning

confidence: 99%

“…These stimulus-responsive hydrogels effectively pave the ways for their successful applications in artificial muscle, soft robots, and intelligent devices [5][6][7]. However, the conventional hydrogels are easily broken even at a low stress [8,9], and their mechanical properties are soft and weak [10,[13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

“…Experimental results reveal that the DN hydrogels have mechanical strengths of 1-10 MPa and strains of 1000% under the tensile stress, while their toughness values (e.g., tearing fracture energy) are as high as 100-1000 J/m 2 [10]. To further improve the mechanical properties of these soft materials, a tough and stretchable hybrid DN hydrogel has been synthesized and induced by the ionic dissociation of polyelectrolyte [12,[16][17][18][19][20][21][22]. However, the working mechanisms of significantly improved mechanical properties of these polyelectrolyte dissociated DN hydrogels are different from those of the conventional ones [23][24][25].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Cooperative dynamics of heuristic swelling and inhibitive micellization in double-network hydrogels by ionic dissociation of polyelectrolyte

Xing

Hossain

et al. 2020

Polymer

View full text Add to dashboard Cite

In this study, a cooperative model has been proposed for the double network (DN) hydrogel, which synchronously undergoes heuristic swelling and inhibitive micellization by the ionic dissociation of polyelectrolyte. Flory-Huggins solution theory is initially employed to identify the working mechanism of dielectric constants on swelling behavior of the DN hydrogel. Then a free-energy function is introduced to formulate the constitutive relationship of the DN hydrogels, in which the first hydrotropic network undergoes a heuristic swelling and the second hydrophobic network undergoes an inhibitive micellization. Finally, the proposed model has been verified using the experimental results reported in the literature. A good agreement between the theoretical results and experimental ones has been achieved. This study provides a fundamental approach to formulate the constitutive relationship and to understand the cooperative dynamics of two types of networks in DN hydrogels induced by the polyelectrolyte.

show abstract

Section: Modelling Of Cooperative Dynamics In Dn Hydrogelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Cooperative dynamics of heuristic swelling and inhibitive micellization in double-network hydrogels by ionic dissociation of polyelectrolyte

Xing

Hossain

et al. 2020

Polymer

View full text Add to dashboard Cite

show abstract

“…The numerical results reveal that the stretch ratio has a significant effect on the changes of transition temperatures for the SMP. Furthermore, as the transition temperature is decreased to a certain value, the stored mechanical energy in the polymer is released, and accordingly the SME is triggered [43][44][45][46][47]. As an example, the g T is increased with a value of 10K when the frequency is increased from 0.001Hz to 10Hz.…”

Section: Modelling Of Thermo-/chemo-responsive Multi-smementioning

confidence: 99%

A thermomechanical model of multi-shape memory effect for amorphous polymer with tunable segment compositions

Wang

Shi

et al. 2019

Composites Part B: Engineering

View full text Add to dashboard Cite

Multi-shape memory effect (multi-SME) in amorphous polymers has attracted great attention due to their complex thermal transitions and multi-step recovery behavior. Many experimental studies have been reported for synthesis, characterization, testing and demonstration of the multi-SME. However, theoretical approaches have seldom been applied although they are critically needed to understand the principles and predict the behavior of the multi-SME in various amorphous polymers. In this study, a new thermomechanical model was proposed to describe the thermo-/chemo-responsive multi-SME of amorphous polymers with tunable segment compositions. Based on the Weibull statistical model, a new constitutive framework was established to describe temperature-, stretch ratio-and strain-dependent behaviors of thermo-/chemo-responsive multi-SME. Finally, this newly proposed model was applied to quantitatively identify the crucial factors for the thermo-/chemo-responsive shape recovery behaviors, which have been verified by the reported experimental data.

show abstract

“…However, most hydrogels have low mechanical stiffness and strength 11 . To overcome these drawbacks, the concept of double‐network (DN) has been proposed for the hydrogels, 12–19 in which sacrificial bonds have been introduced to effectively dissipate the mechanical energy by means of physicochemical transitions 20–26 . It has been demonstrated that the fracture tensile stress and toughness of DN hydrogels have been significantly enhanced up to 10 MPa and 1000 J/m 2 , respectively 16 …”

Section: Introductionmentioning

confidence: 99%

Renormalized Flory‐Huggins lattice model of physicochemical kinetics and dynamic complexity in self‐healing double‐network hydrogel

Xing

Hossain

2020

J of Applied Polymer Sci

View full text Add to dashboard Cite

Self‐healing capability offers great designability on mechanical properties of double‐network (DN) hydrogel. However, the thermodynamics understanding behind such physicochemical transitions and self‐healing behaviors are yet to be explored properly. This study describes a renormalized Flory‐Huggins lattice model for DN hydrogels, of which the physicochemical kinetics and dynamic complexity are resulted from stress‐induced bond scission and macromolecule rearrangement. Based on the Flory‐Huggins lattice model and Gaussian distribution theory, an extended free‐energy model was formulated by the steric repulsive free‐energy function. Afterwards, the function was used to identify the working mechanisms and thermodynamics in self‐healing DN hydrogels with ultra‐high mechanical strength. Finally, the effectiveness of model was demonstrated by applying it to predict the mechanical behaviors of DN hydrogels, where the analytical results showed good agreements with experiment data.

show abstract

Enrichment of Cd2+ from water with a calcium alginate hydrogel filtration membrane

Cited by 13 publications

References 27 publications

Cooperative dynamics of heuristic swelling and inhibitive micellization in double-network hydrogels by ionic dissociation of polyelectrolyte

Cooperative dynamics of heuristic swelling and inhibitive micellization in double-network hydrogels by ionic dissociation of polyelectrolyte

A thermomechanical model of multi-shape memory effect for amorphous polymer with tunable segment compositions

Renormalized Flory‐Huggins lattice model of physicochemical kinetics and dynamic complexity in self‐healing double‐network hydrogel

Contact Info

Product

Resources

About