Nanocomposite smart hydrogels with improved responsiveness and mechanical properties: A mini review

Liu, Zhuang; Faraj, Yousef; Ju, Xin; Wang, Wei; Xie, Rui; Chu, Liang‐Yin

doi:10.1002/polb.24723

Cited by 68 publications

(49 citation statements)

References 60 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The polymers which constitute three-dimensional hydrogel networks undergo significant physical and chemical changes with slight oscillations in the external environment (temperature, pH value, light, magnetic field etc.) [4][5][6][7][8]. The resulting changes are reversible, i.e.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of poly(N-isopropylmethacrylamide-co-N-isopropylacrylamide) copolymers

Urošević

Nikolić

Ilić‐Stojanović

et al. 2020

Hem Ind

View full text Add to dashboard Cite

Copolymeric hydrogels of poly(N-isopropylmethacrylamide-co-N-isopropylacrylamide), p(NIPMAM/NIPAM), are synthesized by radical polymerization of N-isopropylmethacrylamide (NIPMAM) and N-isopropylacrylamide (NIPAM) monomers by using the cross-linker ethylen glycol dimethacrylate (EGDM). The synthesized copolymeric p(NIPMAM/NIPAM) hydrogels, starting monomers and the cross-linker were structurally characterized by using Fourier transform infrared spectroscopy (FTIR). The amounts of residual reactants in the synthesized hydrogels were determined by high-pressure liquid chromatography (HPLC). Swelling of p(NIPMAM/NIPAM) hydrogels was investigated in relation to the temperature and pH value of the solution. The obtained values of residual monomer quantities are within acceptable limits and in the range from 2.69 to 5.25 mg g -1 for NIPMAM and 14.55 to 30.80 mg g -1 for NIPAM. The synthesized p(NIPMAM/NIPAM) hydrogels are negatively thermosensitive. The most common mechanisms of transport of a swelling solution in p(NIPMAM/NIPAM) hydrogels are polymer chain relaxation, (Case III), and the anomalous type of diffusion (non-Fickian diffusion). The maximal equilibrium swelling degree of 51.19 was reached by the p(NIPMAM/NIPAM) hydrogel with 1.5 mol% of EGDM at the temperature of 25 o C and pH 4, whereas the lowest one of 0.98 was exhibited by the hydrogel with 3 mol% of EGDM at the temperature of 80 o C and pH 7. Due to their low content of residual reactants and a satisfactory degree of swelling at various pH values, synthesized p(NIPMAM/NIPAM) hydrogels can be applied as carriers for the controlled release of pharmaceutically active substances.

show abstract

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of poly(N-isopropylmethacrylamide-co-N-isopropylacrylamide) copolymers

Urošević

Nikolić

Ilić‐Stojanović

et al. 2020

Hem Ind

View full text Add to dashboard Cite

show abstract

“…Nanocomposite hydrogels have attracted much attention due to their rapid swelling-deswelling response, high swelling ratios, and tunable physical properties [95,96]. Stimuli-responsive hydrogels are widely used in numerous potential applications, e.g., sensor, actuators, transducers, artificial muscles, tissue engineering scaffolds, microfluidics, and drug delivery vector [97][98][99][100][101].…”

Section: Other Processing Techniques 341 Hydrogelsmentioning

confidence: 99%

Smart polymer nanocomposites: A review

Chow¹,

Ishak²

2020

Express Polym. Lett.

View full text Add to dashboard Cite

The development of smart polymer nanocomposites (SPN) has been an area of high scientific and industrial interest in recent years, due to fantastic improvements achieved in these materials. SPN found potential applications in shape memory, self-healing, self-sensing, self-heating, self-cleaning, and energy harvesting. This mini-review highlights the current research and development on SPN, specifically on shape memory polymer (SMP) and self-healing polymer (SHP) nanocomposites. The processing techniques for SPN nanocomposites, for example, polymerization, melt-compounding, solution mixing, electrospinning, and thermoset-curing are discussed. Some of the potential strategies to modify the properties of SMP and SHP nanocomposites are highlighted. The future perspective and recommended works for the SPN nanocomposites are shared in this mini-review.

show abstract

“…[ 14 ] However, traditional PNIPAM hydrogels suffer from weak mechanical properties and low swelling rate, resulting in high restrictions for practical applications. [ 15 ]…”

Section: Introductionmentioning

confidence: 99%

Highly Swellable and Stretchable Thermoresponsive Hydrogels Enabled by Functionalized Boron Nitride Nanosheets

Guo

Zhang

et al. 2020

Macro Materials & Eng

View full text Add to dashboard Cite

Thermoresponsive hydrogels with high stretchability and large swelling ratio are promising materials for fabricating soft devices, sensors, artificial muscles, etc. However, it remains a challenge to achieve these properties simultaneously within one hydrogel. Herein, highly swellable and stretchable thermoresponsive hydrogels are developed by incorporating functionalized boron nitride nanosheets (f‐BNNSs) into poly(maleic anhydride functionalized β‐cyclodextrin‐co‐N‐isopropylacrylamide) hydrogel. In such hydrogels, the dynamic host–guest interactions between f‐BNNSs and polymer matrix act as sacrificial bonds to efficiently dissipate energy, and the homogeneous covalent cross‐linking network of polymer leads to a smooth stress propagation, which enables the hydrogels to obtain excellent mechanical properties, such as remarkable strength (up to 0.15 MPa) and outstanding stretchability (up to 1457%). What is more, the resultant hydrogel also exhibits excellent thermoresponsive properties (swelling rate up to 5000% at 25 °C and deswelling rate down to 6% at 50 °C). Thus, this work offers a promising strategy to fabricate highly swellable and stretchable thermoresponsive hydrogels for potential soft actuators and bionic robotics applications.

show abstract

Nanocomposite smart hydrogels with improved responsiveness and mechanical properties: A mini review

Cited by 68 publications

References 60 publications

Synthesis and characterization of poly(N-isopropylmethacrylamide-co-N-isopropylacrylamide) copolymers

Synthesis and characterization of poly(N-isopropylmethacrylamide-co-N-isopropylacrylamide) copolymers

Smart polymer nanocomposites: A review

Highly Swellable and Stretchable Thermoresponsive Hydrogels Enabled by Functionalized Boron Nitride Nanosheets

Contact Info

Product

Resources

About