Synthesis and performance characterization of poly(vinyl alcohol)-xanthan gum composite hydrogel

Zhang, Q.; Hu, Xiangming; Wu, Mingyue; Wang, M.M.; Zhao, Yanyun; Li, T.T.

doi:10.1016/j.reactfunctpolym.2019.01.002

Cited by 92 publications

(33 citation statements)

References 55 publications

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“…However, the traditional hydrogels are brittle. Therefore, to overcome the limitation, it is crucial to develop self‐healing hydrogels …”

Section: Introductionmentioning

confidence: 99%

Poly(acrylic acid)‐chitosan @ tannic acid double‐network self‐healing hydrogel based on ionic coordination

Zhang

et al. 2020

Polymers for Advanced Techs

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In this work, poly(acrylic) acid-chitosan @ tannic acid-aluminum ion (PAA-CS@TA-Al 3+ ) double-network hydrogel was prepared via prefabrication, blending method, and Al 3+ immersion method. The interaction between chitosan and tannic acid (CS@TA) was analyzed using Fourier transfer infrared spectra and UV-Vis spectra. The UV-Vis spectrum was also used to confirm the formation of ionic coordination in the gel. Then, the possible coordination modes were studied and analyzed. The microscopic pore structure and macroscopic strain behavior of the gel were analyzed using SEM and tensile testing, respectively, which verified that the tensile strength (≈32 KPa) and elongation at break (≈1700%) of the gel primarily resulted from its crosslinking structure. In addition, the gel also demonstrated a good self-healing performance with recovery ≈92.2% at 60 minutes.Hence, the proposed novel self-healing gel can provide inspiration for the preparation of future self-healing gels. K E Y W O R D Schitosan, double-network hydrogel, ionic coordination, self-healing, tannic acid

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“…However, the traditional hydrogels are brittle. Therefore, to overcome the limitation, it is crucial to develop self‐healing hydrogels …”

Section: Introductionmentioning

confidence: 99%

Poly(acrylic acid)‐chitosan @ tannic acid double‐network self‐healing hydrogel based on ionic coordination

Zhang

et al. 2020

Polymers for Advanced Techs

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“…Consequently, the viscosity of the composite solution became larger and pseudoplasticity came into existence. 198 The PVA-XG (12 : 8) hydrogels swelled abruptly at high pH and attained a maximum equilibrium swelling index of 1.3 at pH 8.0. This indicated that alkaline pH favored the adsorption of methylene blue by composite hydrogels.…”

Section: Physically Modied Xgmentioning

confidence: 96%

“…The HPH-modied XG responded differently to temperature, compared to that observed with XG aer low pressure homogenization (LPH, 69 MPa). LPH caused sharp lowering of storage modulus (elasticity) around 50 C; whereas HPH-treated XG exhibited similar trend around 40 C. Zhang et al 198 elucidated the swelling, mechanical, rheological and adsorption properties of PVA-XG hydrogel synthesized over three freezing (À15 C for 24 h) and thawing (room temperature for 1 h) cycles. They postulated that during freezing and thawing of PVA-XG solution, the hydroxy and carboxy functional groups of the polymers assumed a threedimensional network through hydrogen bonding interactions, and formed a physical hydrogel.…”

Section: Physically Modied Xgmentioning

confidence: 99%

Xanthan gum derivatives: review of synthesis, properties and diverse applications

et al. 2020

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“…A network structure is formed through covalent bonding of molecules and the intertwining of molecular chains, thereby increasing the viscosity of the solution or forming a gel [3]. In the presence of cations, xanthan gum (XG) forms intermolecular bonding thus diminishing interactions with other types of polysaccharides in the same solution [4]. SA reacts with Ca 2+ to form intermolecular crosslinking, and gel strength increases with an increasing ionic strength.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Change of Polymer in Rice Analogues and Its Effect on Texture Quality

Zhang

Tian

Liu

et al. 2020

International Journal of Polymer Science

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Macromolecules will leach from the inside of rice analogues (RA) to the external environment and form escaping substances (ES) when boiling in water for a long time. Some escaped substances adhere to the surface of cooked rice analogues (CRA) to form an adhesive layer (AL), which has an important impact on the cooking quality of RA. In this study, hydrocolloids and emulsifier were added and formed RA. Physicochemical, structural, and textural properties of ES, AL, and CRA samples were analyzed to study the effect of hydrocolloids on cooking quality of RA. The results showed that SA inhibited the leach of molecules, reduced MW of AL, decreased starch content of ES and AL, decreased shear viscosity of RA, and enhanced hydrogen bonding interactions. Ca 2+ increased the dry matter content of CRA and AL, enhanced hydrogen bonding interactions of ES and CRA, and decreased MW of ES. Textural property results showed that the gelatinous properties of RA were enhanced after SA was added. The Ca 2+ in the solution increased the adhesiveness of RA, while decreasing their elasticity. This study explained how hydrocolloids affect the texture properties of RA at a molecular level.

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Synthesis and performance characterization of poly(vinyl alcohol)-xanthan gum composite hydrogel

Cited by 92 publications

References 55 publications

Poly(acrylic acid)‐chitosan @ tannic acid double‐network self‐healing hydrogel based on ionic coordination

Poly(acrylic acid)‐chitosan @ tannic acid double‐network self‐healing hydrogel based on ionic coordination

Xanthan gum derivatives: review of synthesis, properties and diverse applications

Dynamic Change of Polymer in Rice Analogues and Its Effect on Texture Quality

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