Synthesis and Characterization of Temperature-Sensitive Poly(<i>N</i>-isopropylacryamide-co-acrylamide)/Montmorillonite Nanocomposite Hydrogels

Yu, Yueqin; Liu, Yanping; Jia, Fuqiang; Li, Suhua; Kong, Yanyan; Zhang, Erchi

doi:10.1080/00914037.2011.641699

Cited by 20 publications

(6 citation statements)

References 7 publications

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“…A temperature-sensitive poly((N-isopropylacryamide-coacrylamide)=montmorillonite (P(NIPAAm-co-Am)=MMT) nanocomposite hydrogel with enhanced mechanical properties and thermodynamic stability based on chitosan and nanoparticle MMT was studied [4] . The temperaturesensitive behavior, mechanical property, thermodynamic stability, and enzymatic degradation of the nanocomposite hydrogels were investigated in detail.…”

Section: Introductionmentioning

confidence: 99%

“…The elastic modulus was found to increase exponentially with total comonomer concentration, keeping constant the percentage of bisacrylamide comonomers. The swelling characteristics and mechanical properties of gelatin-polyacrylamide interpenetrating networks were reported [3] .A temperature-sensitive poly((N-isopropylacryamide-coacrylamide)=montmorillonite (P(NIPAAm-co-Am)=MMT) nanocomposite hydrogel with enhanced mechanical properties and thermodynamic stability based on chitosan and nanoparticle MMT was studied [4] . The temperaturesensitive behavior, mechanical property, thermodynamic stability, and enzymatic degradation of the nanocomposite…”

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confidence: 99%

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Elastic Properties of a Swollen PAAm-NIPA Copolymer with Various NIPA Contents

Evingür

Pekcan

2014

Polymer-Plastics Technology and Engineering

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Copolymer based on cross-linked polyacrylamide (PAAm) having N-isopropylacrylamide (NIPA) was prepared and their elastic properties were studied as a function of NIPA contents. NIPA content dependency of the shear modulus, S of the PAAm-NIPA copolymers due to volume phase transition was measured using tensile testing technique at 30 degrees C. It was observed that its shear modulus and toughness were found to be strongly dependent on NIPA content. It is understood that the shear modulus was found to increase with NIPA contents, keeping constant temperature at 30 degrees C. Elastic properties of the PAAm-NIPA copolymers show compositional dependence

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Section: Introductionmentioning

confidence: 99%

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confidence: 99%

Elastic Properties of a Swollen PAAm-NIPA Copolymer with Various NIPA Contents

Evingür

Pekcan

2014

Polymer-Plastics Technology and Engineering

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“…Volume phase transition temperature is an important indicator with which to measure the temperature sensitivity of hydrogels. The water loss rate of the hydrogels with increasing temperature was measured, and Boltzmann fitting was performed on the experimental data [ 42 , 43 ]. The volume phase transition temperature (VPTT) [ 44 , 45 ] of the hydrogel was determined as the inflection point of the curve.…”

Section: Resultsmentioning

confidence: 99%

Smart Hydrogel Bilayers Prepared by Irradiation

Huo

An²,

Chang

et al. 2021

Polymers

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Environment-responsive hydrogel actuators have attracted tremendous attention due to their intriguing properties. Gamma radiation has been considered as a green cross-linking process for hydrogel synthesis, as toxic cross-linking agents and initiators were not required. In this work, chitosan/agar/P(N-isopropyl acrylamide-co-acrylamide) (CS/agar/P(NIPAM-co-AM)) and CS/agar/Montmorillonite (MMT)/PNIPAM temperature-sensitive hydrogel bilayers were synthesized via gamma radiation at room temperature. The mechanical properties and temperature sensitivity of hydrogels under different agar content and irradiation doses were explored. The enhancement of the mechanical properties of the composite hydrogel can be attributed to the presence of agar and MMT. Due to the different temperature sensitivities provided by the two layers of hydrogel, they can move autonomously and act as a flexible gripper as the temperature changes. Thanks to the antibacterial properties of the hydrogel, their storage time and service life may be improved. The as prepared hydrogel bilayers have potential applications in control devices, soft robots, artificial muscles and other fields.

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“…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.

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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.

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Synthesis and Characterization of Temperature-Sensitive Poly(N-isopropylacryamide-co-acrylamide)/Montmorillonite Nanocomposite Hydrogels

Cited by 20 publications

References 7 publications

Elastic Properties of a Swollen PAAm-NIPA Copolymer with Various NIPA Contents

Elastic Properties of a Swollen PAAm-NIPA Copolymer with Various NIPA Contents

Smart Hydrogel Bilayers Prepared by Irradiation

Smart polymer nanocomposites: A review

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