Luca Ianni's research while affiliated with University of Milan and other places

Publications (3)

Article
Purpose of this study is to test if possible effects of gelation temperature and pH on the cross-linking process between poly(vinyl alcohol) (PVA) and glutaraldehyde (GTA), have consequences on the dosimetric properties of PVA-GTA Xylenol Orange Fricke gel dosimeters. Therefore, dose-response curves and Fe 3+ diffusion rate of PVA-GTA Fricke gel do...
Article
Purpose Fricke gel dosimeters (FGDs) based on poly-vinyl alcohol (PVA) as gelling agent and glutaraldehyde (GTA) as cross-linker, were developed with the aim to overcome the drawbacks affecting the FGDs prepared with traditional natural gel matrices like gelatin or agarose [1]. Here, we investigate the dosimetric robustness of PVA-GTA FGDs against...
Article
Optical absorbance and dynamic light scattering studies of Fricke xylenol orange gel dosimeters loaded with laponite were carried out with the aim to investigate possible effects of nanoparticles on the dosimetric properties and diffusion phenomena of ferric ions. A procedure for incorporating laponite nano-sized clay particles into the gel dosimet...

Citations

... One of the most relevant matrix modifications may be the crosslinking of polyvinyl alcohol with glutaraldehyde for Fricke-based dosimetry [119]; in this case, the main motivation was simplifying the gelling process of PVA by using a similar approach consistent with that used in glutaraldehyde and gelatin. Moreover, the influence of gelling temperature on this type of matrix was studied by Gallo et al. [26,120]. An extensive and complete revision of these types of dosimeters can be found elsewhere [12]. ...
... This is essentially a consequence of the fact that FG dosimeters are still a subject of research in various laboratories that are trying to overcome the current limits of these dosimeters, which are mainly related to their poor temporal stability due to selfoxidation and Fe 3+ diffusion phenomena. In fact, attempts to improve the dosimetric properties of FG dosimeters resulted in several studies on different chemical formulations obtained by using further organic additives such as saccharides [6][7][8], antioxidants [9][10][11][12], nanocomposites [13][14][15], chelating agent alternatives to xylenol orange [16][17][18][19][20][21][22][23], and, finally, different gel matrices acting as mobility-reducing agents [24][25][26][27][28]. ...