Tough and durable hydrogels with robust skin layers formed<i>via</i>soaking treatment

Guo, Guoqiang; Chen, Yuanzhou; Liu, Xiaoyu; Zhu, Dong Yu; Zhang, Bo; Lin, Nengming; Gao, Liang

doi:10.1039/c8tb02540a

Cited by 29 publications

(30 citation statements)

References 47 publications

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“…To quantitatively compare the crystallinity of the PDN PVA/Alg hydrogels, XRD characterizations were carried out on the hydrogels. According to previous reports, PVA crystallization show a sharp crystalline peak at 2θ = 19.4°, a shoulder peak in the range of 21.9 ~ 23° and a weak peak in 39.5 ~ 43°, corresponding to the (101), (200) and (102) planes of the PVA crystallites, respectively 22,23 . Alginate also crystallizes due to the presence of calcium ions at 2θ = 32°, 34° and 45°, 24 but the crystallization peaks of alginate in XRD patterns of the PDN PVA/Alg hydrogels almost negligible.…”

Section: Methodsmentioning

confidence: 55%

“…Alginate also crystallizes due to the presence of calcium ions at 2θ = 32°, 34° and 45°, 24 but the crystallization peaks of alginate in XRD patterns of the PDN PVA/Alg hydrogels almost negligible. Accordingly, the degrees of crystallinity (DC) of the hydrogels were approximately evaluated by the DC of PVA from the following equation 22,23

DC = A_{1} / A_{2} \times 100 % .

where A 1 and A 2 represent the total of the areas of the three crystallization peaks of PVA and the area subtending the whole diffraction profile of the PDN PVA/Alg hydrogels, respectively.…”

Section: Methodsmentioning

confidence: 99%

“…According to previous reports, PVA crystallization show a sharp crystalline peak at 2θ = 19.4 , a shoulder peak in the range of 21.9~23 and a weak peak in 39.5~43 , corresponding to the (101), (200) and (102) planes of the PVA crystallites, respectively. 22,23 Alginate also crystallizes due to the presence of calcium ions at 2θ = 32 , 34 and 45 , 24 but the crystallization peaks of alginate in XRD patterns of the PDN PVA/Alg hydrogels almost negligible. Accordingly, the degrees of crystallinity (DC) of the hydrogels were approximately evaluated by the DC of PVA from the following equation.…”

Section: Crystallinity Calculationmentioning

confidence: 99%

“…Accordingly, the degrees of crystallinity (DC) of the hydrogels were approximately evaluated by the DC of PVA from the following equation. 22,23…”

Section: Crystallinity Calculationmentioning

confidence: 99%

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High strength and toughness of double physically cross‐linked hydrogels composed of polyvinyl alcohol and calcium alginate

Chen

Yang

Shi

et al. 2020

J of Applied Polymer Sci

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The weak mechanical properties of hydrogels, especially physically crosslinked hydrogels are usually a major factor to hinder their application. To solve this problem, in this work, we prepared a high strength and toughness of double physically cross-linked (PDN) hydrogels composed of crystalline domain cross-linked polyvinyl alcohol (PVA) and Ca 2+-cross-linked alginate (Alg). With a further annealing treatment, the noncovalent cross-linked network via

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Section: Methodsmentioning

confidence: 55%

DC = A_{1} / A_{2} \times 100 % .

where A 1 and A 2 represent the total of the areas of the three crystallization peaks of PVA and the area subtending the whole diffraction profile of the PDN PVA/Alg hydrogels, respectively.…”

Section: Methodsmentioning

confidence: 99%

Section: Crystallinity Calculationmentioning

confidence: 99%

“…Accordingly, the degrees of crystallinity (DC) of the hydrogels were approximately evaluated by the DC of PVA from the following equation. 22,23…”

Section: Crystallinity Calculationmentioning

confidence: 99%

See 2 more Smart Citations

High strength and toughness of double physically cross‐linked hydrogels composed of polyvinyl alcohol and calcium alginate

Chen

Yang

Shi

et al. 2020

J of Applied Polymer Sci

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“…The high water content and organic composition similar to those of the extracellular matrix endow CPHs with outstanding biocompatibility. Some natural molecules, such as phytic acid, are often utilized as a dopant and gelator, and the synthesized hydrogels show no obvious harm to living organisms/tissues in cytotoxicity testing 92–94…”

Section: Cphs For Advanced Sensorsmentioning

confidence: 99%

Doping engineering of conductive polymer hydrogels and their application in advanced sensor technologies

et al. 2019

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Supplementary Networking of Interpenetrating Polymer System (SNIPSy) Strategy to Develop Strong & High Water Content Ionic Hydrogels for Solid Electrolyte Applications

Mandal

Kumari

Kumar

et al. 2021

Adv Funct Materials

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To synthesize hydrogels that possess tensile strength and modulus together in MPas along with extensibility at high equilibrium water content (≥90 wt%) is challenging but important from the application perspective. Especially, such hydrogel compositions are useful for fabricating flexible electronics devices for subsea applications, where underwater risk‐free implementation and optimum device performance at low temperature (≈0 °C) and high hydrostatic pressure (≤20 bar) conditions is desirable. The high water content of hydrogel is necessary to facilitate ion transportation, and mechanical strength is desirable to maintain a stable electrode–electrolyte interface under load. In this study, supplementary networking of an interpenetrating polymer system strategy is utilized to develop ionic hydrogels with tensile strength and Young's modulus values up to 2 and 1.67 MPa, respectively, at high equilibrium water content value up to 96%. Cost‐effective, durable, rechargeable, and flexible batteries are fabricated using the Zn & Li ion soaked hydrogel as solid electrolyte without barrier. These batteries display minimal loss in capacity when immersed in water, deformed, exposed to flame, put under high load, and operated under low‐temperature conditions suggesting the viability for subsea application.

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Tough and durable hydrogels with robust skin layers formedviasoaking treatment

Abstract: Simple soaking treatment generates layered hydrogels with a combination of superior mechanics and chemical robustness.

Cited by 29 publications

References 47 publications

High strength and toughness of double physically cross‐linked hydrogels composed of polyvinyl alcohol and calcium alginate

High strength and toughness of double physically cross‐linked hydrogels composed of polyvinyl alcohol and calcium alginate

Doping engineering of conductive polymer hydrogels and their application in advanced sensor technologies

Supplementary Networking of Interpenetrating Polymer System (SNIPSy) Strategy to Develop Strong & High Water Content Ionic Hydrogels for Solid Electrolyte Applications

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