The Preparation of a Highly Stretchable Cellulose Nanowhisker Nanocomposite Hydrogel

Duan, Jiufang; Jiang, Jianxin; Li, Jianzhang; Liu, Liujun; Li, Yiqiang; Guan, Changlong

doi:10.1155/2015/963436

Cited by 12 publications

(11 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This may hinder the swelling ability of the hydrogels. Similarly, the decrease in the swelling ratio of the chemically cross-linked hydrogels has been found with the presence of cellulose [30,31]. In contrast, Abitbol et al [32] noticed a higher amount of water absorbed by the PVA hydrogels prepared using a freezing and thawing method after CNCs were introduced.…”

Section: Water Content and Swelling Ratiomentioning

confidence: 87%

“…The swelling ratio is controlled by the hydrophilic ability of the functional groups [30]. The cross-linking between the PVA matrix and the cellulose in the hydrogels can decrease the availability of the functional groups, which interact with water, leading to the lower swelling degree of the hydrogels [30,31]. Additionally, when the amount of CNCs in the hydrogel increases, more hydrogen bonds between cellulose and PVA are formed.…”

Section: Water Content and Swelling Ratiomentioning

confidence: 99%

See 1 more Smart Citation

Cross-linked nanocomposite hydrogels based on cellulose nanocrystals and PVA: Mechanical properties and creep recovery

Tanpichai

Oksman

2016

Composites Part A: Applied Science and Manufacturing

145

View full text Add to dashboard Cite

Cellulose nanocrystal (CNC) reinforced poly(vinyl alcohol) (PVA) hydrogels with a water content of ~92% were successfully prepared with glutaraldehyde (GA) as a cross-linker. The effects of the CNC content on the thermal stability, swelling ratio and mechanical and viscoelastic properties of the cross-linked hydrogels were investigated. The compressive strength at 60% strain for the hydrogels with 1 wt% CNCs increased by 303%, from 17.5 kPa to 53 kPa. The creep results showed that the addition of CNCs decreased the creep elasticity due to molecular chain restriction. The almost complete strain recovery (~97%) after fixed load removal for 15 min was observed from the hydrogels with CNCs, compared with 92% strain recovery of the neat cross-linked PVA hydrogels. The incorporation of CNCs did not affect the swelling ratio and thermal stability of the hydrogels. These results suggest the cross-linked CNC-PVA hydrogels have potential for use in biomedical and tissue engineering applications.

show abstract

Section: Water Content and Swelling Ratiomentioning

confidence: 87%

Section: Water Content and Swelling Ratiomentioning

confidence: 99%

Cross-linked nanocomposite hydrogels based on cellulose nanocrystals and PVA: Mechanical properties and creep recovery

Tanpichai

Oksman

2016

Composites Part A: Applied Science and Manufacturing

145

View full text Add to dashboard Cite

show abstract

“…At 25 °C, these hydrogels were able to restore 100% mechanical characteristics (storage modulus) within 20 s after deformation at a high shear rate of 100 s −1 . Other hydrogels composed of cellulose nanowhiskers, acrylamide, stearyl methacrylate, and SDS were able to self‐heal due to the dissociation and re‐association of hydrophobic micelles . Nearly 100% healing efficiencies (tensile) were exhibited after 60 min of healing.…”

Section: Tough Self Hydrogelsmentioning

confidence: 99%

“…Nearly 100% healing efficiencies (tensile) were exhibited after 60 min of healing. The network exhibited high extendibility of up to 2500%, and high tensile and compressive strengths of 1.338 MPa and 2.835 MPa, respectively …”

Section: Tough Self Hydrogelsmentioning

confidence: 99%

Self‐Healing Hydrogels

2016

View full text Add to dashboard Cite

Over the past few years, there has been a great deal of interest in the development of hydrogel materials with tunable structural, mechanical, and rheological properties, which exhibit rapid and autonomous self-healing and self-recovery for utilization in a broad range of applications, from soft robotics to tissue engineering. However, self-healing hydrogels generally either possess mechanically robust or rapid self-healing properties but not both. Hence, the development of a mechanically robust hydrogel material with autonomous self-healing on the time scale of seconds is yet to be fully realized. Here, the current advances in the development of autonomous self-healing hydrogels are reviewed. Specifically, methods to test self-healing efficiencies and recoveries, mechanisms of autonomous self-healing, and mechanically robust hydrogels are presented. The trends indicate that hydrogels that self-heal better also achieve self-healing faster, as compared to gels that only partially self-heal. Recommendations to guide future development of self-healing hydrogels are offered and the potential relevance of self-healing hydrogels to the exciting research areas of 3D/4D printing, soft robotics, and assisted health technologies is highlighted.

show abstract

“…More octadecyl methacrylate can increase the strain and compressive strength of the hydrogel by forming more cross-linking points. However, too many cross-linking points will decrease the strain and compressive strength [16].…”

Section: Mechanical Properties Of the Octadecyl Methacrylate-acrylamimentioning

confidence: 99%

Structure and Properties of Hydrophobic Aggregation Hydrogel with Chemical Sensitive Switch

Duan

Jiang

2017

International Journal of Polymer Science

Self Cite

View full text Add to dashboard Cite

Hydrogels with chemical sensitive switch have control release properties in special environments. A series of polyacrylamide-octadecyl methacrylate hydrogels crosslinked by N,N′-bis (acryloyl) cystamine were synthesized as potential chemical sensitive system. When this hydrogel encounters dithiothreitol it can change its quality. The properties of the hydrogels were characterized by infrared spectroscopy, contact angle, and scanning electron microscopy. The water absorption of the hydrogel has the maximum value of 475%, when the content of octadecyl methacrylate is 5 wt%. The amount of weight loss was changed from 34.6% to 17.2%, as the content of octadecyl methacrylate increased from 3 wt% to 9.4 wt%. At the same time, the stress of the hydrogel decreased from 67.01% to 47.61%; the strength of the hydrogel reaches to the maximum 0.367 Mpa at 7 wt% octadecyl methacrylate. The increasing content of octadecyl methacrylate from 3 wt% to 9.4 wt% can enhance the hydrophobicity of the hydrogel; the contact angle of water to hydrogel changed from 14.10° to 19.62°. This hydrogel has the porous structure which permits loading of oils into the gel matrix. The functionalities of the hydrogel make it have more widely potential applications in chemical sensitive response materials.

show abstract

The Preparation of a Highly Stretchable Cellulose Nanowhisker Nanocomposite Hydrogel

Cited by 12 publications

References 18 publications

Cross-linked nanocomposite hydrogels based on cellulose nanocrystals and PVA: Mechanical properties and creep recovery

Cross-linked nanocomposite hydrogels based on cellulose nanocrystals and PVA: Mechanical properties and creep recovery

Self‐Healing Hydrogels

Structure and Properties of Hydrophobic Aggregation Hydrogel with Chemical Sensitive Switch

Contact Info

Product

Resources

About