Preparation and characterization of double network hydrogel with high-strength and self-healing

Characterization of polyvinyl alcohol-borax/agarose (PVA-B/AG) double network hydrogel utilized for the cleaning of works of art

10.21203/rs.3.rs-48527/v3 ◽

2020 ◽

Author(s):

Ehab Awad Al-Emam ◽

Hilde Soenen ◽

Joost Caen ◽

Koen Janssens

Keyword(s):

Polyvinyl Alcohol ◽

Self Healing ◽

Retention Capacity ◽

Structured Surfaces ◽

Double Network ◽

Liquid Retention ◽

Long Time ◽

Cleaning Procedures ◽

Phase Retention

Abstract Since cleaning of artworks may cause undesirable physicochemical alterations and is a nonreversible procedure, it is mandatory to adopt the proper cleaning procedure. Such a procedure should remove undesired materials whilst preserving the original surface. In this regard, numerous gels have been developed and exploited for the cleaning of various artwork surfaces. Lately, agarose (AG) and polyvinyl alcohol-borax (PVA-B) hydrogels have been widely employed as cleaning tools by conservators. Both hydrogels show some limitations in specific cleaning practices. In this work, we investigated the influence of including increased levels of agarose into PVA-B systems. For this reason, we performed a detailed characterization on the double network (DN) hydrogel including the chemical structure, the liquid phase retention, the rheological behavior, and the self-healing behavior of various PVA-B/AG double network hydrogels. These new hydrogels revealed better properties than PVA-B hydrogels and obviated their limitations. The inclusion of AG into PVA-B systems enhanced the liquid retention capacity, shape-stability, and mechanical strength of the blend. Furthermore, AG minimized the expelling/syneresis issue that occurs when loading PVA-B systems with low polarity solvents or chelating agents. The resultant double network hydrogel exhibits relevant self-healing properties. The PVA-B/AG double network is a new and useful cleaning tool that can be added to the conservators’ tool-kit. It is ideal for cleaning procedures dealing with porous and complex structured surfaces, vertical surfaces and for long time applications.

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Polysaccharide-based recoverable double-network hydrogel with high strength and self-healing properties

Journal of Materials Chemistry B ◽

10.1039/c9tb01679a ◽

2020 ◽

Vol 8 (4) ◽

pp. 794-802 ◽

Cited By ~ 8

Author(s):

Kun Lei ◽

Zhao Li ◽

Dandan Zhu ◽

Chengyuan Sun ◽

Yunlong Sun ◽

...

Keyword(s):

High Strength ◽

Self Healing ◽

Double Network ◽

Significant Attention

Polysaccharide-based hydrogels (PSBHs) have received significant attention for numerous bio-applications due to their biocompatibility and non-immunogenic performance.

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Characterization of polyvinyl alcohol-borax/agarose (PVA-B/AG) double network hydrogel utilized for the cleaning of works of art

10.21203/rs.3.rs-48527/v2 ◽

2020 ◽

Author(s):

Ehab Awad Al-Emam ◽

Hilde Soenen ◽

Joost Caen ◽

Koen Janssens

Keyword(s):

Polyvinyl Alcohol ◽

Self Healing ◽

Retention Capacity ◽

Structured Surfaces ◽

Double Network ◽

Liquid Retention ◽

Long Time ◽

Cleaning Procedures ◽

Phase Retention

Abstract Since cleaning of artworks may cause undesirable physicochemical alterations and is a nonreversible procedure, it is mandatory to adopt the proper cleaning procedure. Such a procedure should remove undesired materials whilst preserving the original surface. In this regard, numerous gels have been developed and exploited for the cleaning of various artwork surfaces. Lately, agarose (AG) and polyvinyl alcohol-borax (PVA-B) hydrogels have been widely employed as cleaning tools by conservators. Both hydrogels show some limitations in specific cleaning practices. In this work, we investigated the influence of including increased levels of agarose into PVA-B systems. For this reason, we performed a detailed characterization on the double network (DN) hydrogel including the chemical structure, the liquid phase retention, the rheological behavior, and the self-healing behavior of various PVA-B/AG double network hydrogels. These new hydrogels revealed better properties than PVA-B hydrogels and obviated their limitations. The inclusion of AG into PVA-B systems enhanced the liquid retention capacity, shape-stability, and mechanical strength of the blend. Furthermore, AG minimized the expelling/syneresis issue that occurs when loading PVA-B systems with low polarity solvents or chelating agents. The resultant double network hydrogel exhibits relevant self-healing properties. The PVA-B/AG double network is a new and useful cleaning tool that can be added to the conservators’ tool-kit. It is ideal for cleaning procedures dealing with porous and complex structured surfaces, vertical surfaces and for long time applications.

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Characterization of stress softening and self-healing in a double network hydrogel

Results in Physics ◽

10.1016/j.rinp.2019.01.078 ◽

2019 ◽

Vol 12 ◽

pp. 1826-1833 ◽

Cited By ~ 3

Author(s):

İsmail Doğan Külcü

Keyword(s):

Self Healing ◽

Double Network ◽

Stress Softening

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Characterization of polyvinyl alcohol-borax/agarose (PVA-B/AG) double network hydrogel utilized for the cleaning of works of art

Heritage Science ◽

10.1186/s40494-020-00447-3 ◽

2020 ◽

Vol 8 (1) ◽

Cited By ~ 1

Author(s):

Ehab Al-Emam ◽

Hilde Soenen ◽

Joost Caen ◽

Koen Janssens

Keyword(s):

Polyvinyl Alcohol ◽

Self Healing ◽

Retention Capacity ◽

Structured Surfaces ◽

Double Network ◽

Liquid Retention ◽

Long Time ◽

Cleaning Procedures ◽

Phase Retention

Abstract Since cleaning of artworks may cause undesirable physicochemical alterations and is a nonreversible procedure, it is mandatory to adopt the proper cleaning procedure. Such a procedure should remove undesired materials whilst preserving the original surface. In this regard, numerous gels have been developed and exploited for the cleaning of various artwork surfaces. Lately, agarose (AG) and polyvinyl alcohol-borax (PVA-B) hydrogels have been widely employed as cleaning tools by conservators. Both hydrogels show some limitations in specific cleaning practices. In this work, we investigated the influence of including increased levels of agarose into PVA-B systems. For this reason, we performed a detailed characterization on the double network (DN) hydrogel including the chemical structure, the liquid phase retention, the rheological behavior, and the self-healing behavior of various PVA-B/AG double network hydrogels. These new hydrogels revealed better properties than PVA-B hydrogels and obviated their limitations. The inclusion of AG into PVA-B systems enhanced the liquid retention capacity, shape-stability, and mechanical strength of the blend. Furthermore, AG minimized the expelling/syneresis issue that occurs when loading PVA-B systems with low polarity solvents or chelating agents. The resultant double network hydrogel exhibits relevant self-healing properties. The PVA-B/AG double network is a new and useful cleaning tool that can be added to the conservators’ tool-kit. It is ideal for cleaning procedures dealing with porous and complex structured surfaces, vertical surfaces and for long time applications.

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Fully physical double network hydrogels with high strength, rapid self-recovery and self-healing performances

Polymer Testing ◽

10.1016/j.polymertesting.2018.05.025 ◽

2018 ◽

Vol 69 ◽

pp. 167-174 ◽

Cited By ~ 10

Author(s):

Dandan Wei ◽

Jia Yang ◽

Lin Zhu ◽

Feng Chen ◽

Ziqing Tang ◽

...

Keyword(s):

High Strength ◽

Self Healing ◽

Double Network

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Synthesis of cellulose-based double-network hydrogels demonstrating high strength, self-healing, and antibacterial properties

Carbohydrate Polymers ◽

10.1016/j.carbpol.2017.03.070 ◽

2017 ◽

Vol 168 ◽

pp. 112-120 ◽

Cited By ~ 47

Author(s):

Yixi Wang ◽

Zhicun Wang ◽

Keliang Wu ◽

Jianning Wu ◽

Guihua Meng ◽

...

Keyword(s):

Antibacterial Properties ◽

High Strength ◽

Self Healing ◽

Double Network

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Preparation and characterization of a high strength self-repairing galactomannan hydrogel

BioResources ◽

10.15376/biores.14.4.9853-9866 ◽

2019 ◽

Vol 14 (4) ◽

pp. 9853-9866

Author(s):

Jiufang Duan ◽

Yuxue Gao ◽

Yirong Huang ◽

Lin Li ◽

Jianxin Jiang

Keyword(s):

Methylene Blue ◽

Water Absorption ◽

Removal Rate ◽

High Strength ◽

Maximum Adsorption Capacity ◽

Self Healing ◽

Healing Efficiency ◽

Maximum Water ◽

Water Absorption Property

Autonomous self-repairing properties can prolong the service life of materials. In this paper, galactomannan hydrogel with high mechanical strength was prepared by graft copolymerization of galactomannan with acrylamide and octadecyl methacrylate in aqueous solution. The microstructure, water absorption property, self-healing behavior, and mechanical properties of the hydrogels were investigated using Fourier transform infrared spectroscopy (FTIR) and scanning electron microscope (SEM), etc. The galactomannan hydrogel had the highest tensile strength of 49 KPa and strain of 3000%. The water absorption reached 2340%, and the removal rate of methylene blue was more than 80%. Galactomannan hydrogels demonstrated significant self-healing properties. The cut hydrogel was quite effective in self-repairing in a few minutes, and the self-repairing strength increased with increasing contact time of hydrogel cut surfaces. The healing efficiency of fracture strain could reach 92.7% of the original sample in 10 h. The maximum water absorption of hydrogel reached 2340%. The maximum removal rate of methylene blue by hydrogel reached 80.5%, and the maximum adsorption capacity was 19.3 mg/g. The novelty of the work lies in octadecyl methacrylate being used for galactomannan cross-linking with the ability to self-repair after fracture. The galactomannan self-healing hydrogel has potential in water treatment and sealing technology.

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