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Photon transmission experiments were performed using a UV-visible (UVV) spectrometer during the swelling of polyacrylamide (PAAm) gels. These gels were prepared from acrylamide (AAm) with various N,N'-methylenebisacrylamide (Bis) contents by free-radical crosslinking copolymerization (FCC) in water and dried before use for swelling experiments. Transmitted light intensity, I tr increased...
Temperature variation and optical transmission was monitored in real time during the free radical crosslinking copolymerization (FCC) of acrylamide (AAm) and N,N′-methylenebis(acrylamide) (Bis). Gelation experiments were initiated at various onset temperatures (Ton). During gelation the temperature rose then decreased to its initial value as the gelation time increased. That is explained with the...
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