Preparation and properties of a highly elastic galactomannan- poly(acrylamide- N, N-bis (acryloyl) cysteamine) hydrogel with reductive stimuli-responsive degradable properties

Gao, Yuxue; Zong, Shiyu; Huang, Yirong; Yang, Na; Wen, Hankang; Jiang, Jianxin; Duan, Jiufang

doi:10.1016/j.carbpol.2019.115690

Cited by 29 publications

(9 citation statements)

References 28 publications

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“…The water uptake rate ( Q %) of the hydrogels SG1 and SGWP was determined as per previous reports (Gao et al., 2020; Liu et al., 2020) at different temperatures (25, 37, 45, 50, 60, and 70°C) and pH 1 and 7. The swelling index was calculated using the following equation after 24 h:

\begin{equation}{\rm{Water uptake rate}}\left( {Q,\% } \right) = \frac{{{W}_{2 - {W}_1}}}{{{W}_1}} \times 100\end{equation}

where W 1 is the initial weight and W 2 is the final weight of the SG1/SGWP hydrogel.…”

Section: Methodsmentioning

confidence: 99%

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Porous hydrogel composite with whey protein isolate and galactomannans of Leucaena leucocephala (subabul) seeds: Stability, rheological, thermal, and morphological characterization

Ray

Sharma

2023

Journal of Food Science

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The present study was aimed at curating a porous KCl crosslinked hydrogel with purified subabul galactomannans (SG) from the defatted seeds of Leucaena leucocephala (subabul) and κ-carrageenan (κC) by inducing whey protein isolate (WPI). WPI showed 345% foam overrun and minimal foam drainage (%) at 70 • C when whipped for 5 min at pH 6.8 in the hydrogel prepared with 6.5% w/v SG + 1% w/v κC + 0.63% w/v KCl + 2% w/v WPI. The SG and WPI incorporated porous hydrogel (SGWP) showed maximum G′ (3010 Pa) and frequency independence (>30 Hz) at 65 • C. NMR ( 1 H), scanning electron microscopy, and thermal characterization of SGWP showed a crosslinked microporous gel network formation. SGWP had high water uptake rate (Q) (432%) at 45 • C. The stability of SGWP at neutral pH and high temperature (65 • C) added an impetus to this study as it could be used for a wide range of applications. Hence the proteinpolysaccharide complexation improvised the functional properties of the porous hydrogels. The results suggested a possible valorization of galactomannans from subabul, a forest resource, into a porous hydrogel suitable as a matrix for delivery of bioactive(s) or an aerogel for multifarious industrial applications. K E Y W O R D Scrosslinking, foam overrun, Leucaena leucocephala, porous hydrogel, whey protein isolates Practical Application: A porous hydrogel is defined as a solid, or collection of solid bodies, with sufficient open space to enable a fluid to pass through or around them. Leucaena leucocephala seed (forest resource) galactomannans are non-starch polysaccharides having weak gelling capacity. Whey protein isolates (WPI) are a dairy industry byproduct having excellent foaming properties.Incorporation of WPI in the hydrogel prepared with subabul galactomannan and κ-carrageenan using KCl as a crosslin could form a stable porous structure having high water uptake rate (Q) at neutral pH and elevated temperature. The hydrogel so developed could be a step toward circular economy.

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\begin{equation}{\rm{Water uptake rate}}\left( {Q,\% } \right) = \frac{{{W}_{2 - {W}_1}}}{{{W}_1}} \times 100\end{equation}

where W 1 is the initial weight and W 2 is the final weight of the SG1/SGWP hydrogel.…”

Section: Methodsmentioning

confidence: 99%

“…The water uptake rate (Q%) of the hydrogels SG1 and SGWP was determined as per previous reports (Gao et al, 2020; at different temperatures (25,37,45,50,60, and 70 • C) and pH 1 and 7. The swelling index was calculated using the following equation after 24 h:…”

Section: 12mentioning

confidence: 99%

Porous hydrogel composite with whey protein isolate and galactomannans of Leucaena leucocephala (subabul) seeds: Stability, rheological, thermal, and morphological characterization

Ray

Sharma

2023

Journal of Food Science

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“…TMEDA (72 μL) was added under ice-water bath conditions and stirred for 1 min. The solution was placed in a fixed mold and kept at room temperature for 12 h. , After the hydrogel was prepared, it was soaked in NaCl or sodium borate solution.…”

Section: Methodsmentioning

confidence: 99%

“…Due to different plant sources of polysaccharides, the ratio of mannose to galactose varies from 1:1 to 4:1 . The modification of galactomannan mainly includes surface modifications, grafting, formation of a double network structure, enzyme methods, and metal crosslinking method modification. − A galactomannan hydrogel is an important part of hydrogel research. It is mainly used in water treatment and energy storage, wound dressing, , biomedical, , flexible sensors, adsorbents, drug release, agricultural water and soil conservation, and other fields.…”

Section: Introductionmentioning

confidence: 99%

Soft/Hard Controllable Conversion Galactomannan Ionic Conductive Hydrogel as a Flexible Sensor

Duan

Wen

Zong

et al. 2021

ACS Appl. Electron. Mater.

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A galactomannan hydrogel has the characteristics of renewability and biodegradability. It has good prospects in flexible sensors and soft robot technology. However, it is still a challenge to prepare galactomannan hydrogel sensors with soft/hard controllable conversion and conductivity properties. In this paper, galactomannan, borax, and NaCl were introduced into a poly-N-isopropylacrylamide network to obtain a hydrogel with a double network structure. This hydrogel has a higher compressive strength (3.80 MPa), higher elongation (1370%), and higher conductivity (4.40 S/m). In addition, the hydrogel exhibits soft/hard controllable conversion and shape memory properties. It can be used as a flexible underwater gripper. The resistance curve shows that the prepared hydrogel can be used as a sensor to monitor and distinguish all kinds of small movements and sound changes of the human body through the change of the resistance signal. This hydrogel shows great potential in the fields of sustainable wearable sensors, artificial skin, flexible sensors, and soft robots.

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“…Due to different plant sources of polysaccharides, the ratio of mannose to galactose varies from 1:1 to 4:1 [1]. The modification of GA mainly includes surface modification, grafting, formation of double network structure, and enzyme method and metal crosslinking method modification [2][3][4][5]. The GA-based hydrogel is an important part of hydrogel research.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Drug Release Properties of a Thermo Sensitive GA Hydrogel

et al. 2020

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A high-strength galactomannan (GA)-based hydrogel with thermal response and pH response is introduced in this paper. GA, N-isopropylacrylamide (NIPAM), N-[3-dimethylamino)propyl]methylacrylamide (DMAPMA), and montmorillonite were used to form hydrogels through a simple mixed static system. Fourier-transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), and scanning electron microscopy (SEM) were used to characterize the structure and properties of the hydrogels. The compressive strength of the the hydrogel increased from 23.9 to 105.61 kPa with the increase of GA dosage from 0 to 1.5 wt%. When the NIPAM content in the monomer increased from 75% to 95%, the lower critical solution temperature (LCST) of the hydrogel changed from 36.5 to 45.8 °C. When the monomer content was higher than 10wt%, the swelling kinetics of the sample changed from the second-order equation to the first-order equation. With the increase of the proportion of NIPAM monomer, the release rate of bovine serum album in the early stage was faster, and the cumulative release rate was close to 100%.The release rate of bovine serum albumin at 37 °C was higher than that at 25 °C. The release rate of the hydrogel containing bovine serum albumin was the fastest under the condition of pH 7.4, followed by those at pH 6.6 and pH 5.0. The results showed that this thermal-responsive hydrogel has potential applications as a drug carrier for colon delivery.

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Preparation and properties of a highly elastic galactomannan- poly(acrylamide- N, N-bis (acryloyl) cysteamine) hydrogel with reductive stimuli-responsive degradable properties

Cited by 29 publications

References 28 publications

Porous hydrogel composite with whey protein isolate and galactomannans of Leucaena leucocephala (subabul) seeds: Stability, rheological, thermal, and morphological characterization

Porous hydrogel composite with whey protein isolate and galactomannans of Leucaena leucocephala (subabul) seeds: Stability, rheological, thermal, and morphological characterization

Soft/Hard Controllable Conversion Galactomannan Ionic Conductive Hydrogel as a Flexible Sensor

Preparation and Drug Release Properties of a Thermo Sensitive GA Hydrogel

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