Significance of grafting in curing processes initiated by UV, excimer and ionising radiation sources

Novel additives including charge-transfer complexes in grafting of methyl methacrylate to polypropylene, cellulose and wool, initiated by ionizing radiation and UV: significance of these studies in analogous curing processes

“…24 Similar results were obtained with other additives utilized in grafting, including azobisisobutyronitrile, BEE and multifunctional acrylates and methacrylates. 25 Not only were polymer yields increased in the presence of additives, but also M n was decreased, ie the polymer contains shorter chains but in greater number, a situation expected if the number of radicals in the system were increased, presumably in the case of acid, via enhanced G(H) yields.…”

“…With respect to the MMA grafting system, the data resemble the pattern of observations found with the analogous styrene system previously studied and can also be interpreted by the model proposed for that system. 24 In addition, MMA, which contains a polar acrylate group, is more reactive than styrene in grafting, because MMA can absorb radiation via its acrylate group, leading to additional pathways for polymerization.…”

Thermal induced graft polymerization using peroxide onto polypropylene fiber

“…The surface area of PP fiber (spunbond 20 g/m 2 ) used in this work exceeded in some cases [14][15][16][17][18][19][20][21][22][23] that were grafted under different conditions, while the percentage graft of acrylic acid onto PP fiber was also large. Fig.…”

Surface photografting polymerization of vinyl acetate, maleic anhydride, and their charge‐transfer complex. VIII. Charge‐transfer complex (4)

“…(10) and (11)]; then several coupling reactions took place, as described by eqs. (12)- (14). According to eqs.…”

“…Another reason is their polymer chains were suited to improve the surface hydrophilicity of the substrates, which affected a series of other surface properties of the substrate, such as wettability, printablity, adhesivity, and so on. Regarding another monomer, maleic anhydride (MAH), up to now only a few studies, including ours, [13][14][15][16][17] have been devoted to its photografting polymerization, even though its polymer is water soluble and could drastically improve the surface hydrophilicity of polymeric substrates upon being grafted onto the substrates of interest. This situation should be assigned to the view that MAH undergoes thermally induced polymerization with much difficulty for its low reactivity.…”