Poly (N-vinyl formamide-co-acrylamide) hydrogels: synthesis, composition and rheology

Effect of functionalized multiwalled carbon nanotubes on the mechanical, swelling and viscoelastic properties of gum ghatti-cl-poly(NIPAm) hydrogels

“…Alternatively, a value of tan d o 1 indicates that the value of G 0 is greater than G 00 , indicating that energy is stored during deformation (more solid-like behaviour), while tan d = 1 indicates that a gel point has been reached. 42 In the present study, as seen in Fig. 6, the loss factor values for all the hydrogels were less than unity, suggesting solid-like behavior and the corresponding data are presented in Table S2 (ESI †).…”

“…Alternatively, a value of tan δ < 1 indicates that the value of G ′ is greater than G ′′, indicating that energy is stored during deformation (more solid-like behaviour), while tan δ = 1 indicates that a gel point has been reached. 42…”

Study on viscoelasticity and damping properties of OSA/PAAM hydrogel

“…In the glass transition region, the height and width of the loss peak cannot be adjusted independently, increasing the width of the loss peak will reduce the peak value of the loss peak [13]. Polymer materials are also required to have a long service life, intelligent regulation of the response to the external environment, and high mechanical properties [14][15][16][17]. In addition, when the polymer material is discarded, it is also expected that it can be recycled and reprocessed to achieve the purpose of saving energy and protecting the environment [10,18,19].…”

“…OSA-based hydrogel has excellent mechanical properties and adhesion properties, and can combine with many substrates to form a strong structure, which can effectively reduce vibration and noise [36][37][38]. Polyacrylamide (PAAM) is a synthetic polymer material whose damping properties can be adjusted by changing its molecular weight, degree of crosslinking or adding additives to meet the requirements of different application scenarios [17]. For example, the mechanical damping property of PAAM can be improved by adding llers and changing the degree of cross-linking [39], and its energy absorption can be enhanced by controlling molecular weight and cooperating with other materials, which is suitable for impact damping and other elds [40].…”

Synthesis and rheological investigations of gum-ghatti-cl-poly(NIPA-co-AA)-graphene oxide based hydrogels

“…Rheological approaches can be used more effectively to investigate the strength, gelation, and viscoelastic properties of hydrogels. 9,10…”