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Monodisperse Polypyrrole Nanoparticles Prepared via γ-Ray Radiolysis of Water: An Efficient Near-Infrared Photothermal Agent for Cancer Therapy

“…[13,16] At the same time, the characteristic peaks of the stretching vibration of the aliphatic CH on PVA molecular chains centered at 2909 and 2941 cm −1 can be also detected. The absorption at 1717 cm −1 should be due to the stretching vibration of CO in the unhydrolyzed ester bonds of PVA [17] and the CO bonds at the pyrrole ring due to the reaction of the β-C of the pyrrole ring and hydroxyl radicals, as reported in the previous literatures. [11a,18] However, if the aqueous solution of Py with a pH below 1 was irradiated by γ-ray under the same condition after being deaerated by purging with N 2 , no PPy nanoparticles could (3 of 10) 1600430 be synthesized, but the color of the solution was darkened ( Figure S1b, Supporting Information), which may also be caused by the formation of the low-molecular-weight pyrrole oligomers.…”

Hybrid Hydrogels Based on Poly(vinyl alcohol) (PVA)/Agar/Poly(ethylene glycol) (PEG) Prepared by High Energy Electron Beam Irradiation: Investigation of Physico-Mechanical and Rheological Properties

“…According to these reactions, both crosslinking and chain scission of PVA occur. [22] With respect to the obtained gel content, it can be stated that crosslinking predominates here. According to Table 2, the gel content of the PVA decreases with incorporation of the agar into the PVA hydrogel.…”

Heterogeneity of laser‐irradiated films of polyvinyl alcohol/starch blends: effect of glycerol content

“…[7,8] Laser and g-ray radiation along with natural weathering can be used to study the degradation of polymers. [9][10][11] Zhang et al [9] studied the effect of g-ray radiation on the degradation nature of PVA in aqueous solutions. They found that efficiency of degradation of PVA depends upon dose rate, PVA concentration and the amount of additives.…”