| 7th International Caucasian Symposium on Polymers & Advanced Materials | Tbilisi, Georgia | 2021 | 27-30 ივლისი | Ivane Javakhishvili Tbilisi State University | SPIROPYRAN DOPED LIQUID CRYSTAL POLYMER FILM BASED PERSONAL REUSABLE UV DOSIMETER | oral | We have developed a novel UV radiation dosimeter that allows a real-time estimation of the dose of harmful ultraviolet UV-A, UV-B, and UV-C radiations emitted by the sun and artificial sources. When exposed to UV radiation, our UV Dosimeter visibly change color from the starting light-yellow to blue to dark violet. The color change correlates to levels of accumulated UV irradiation. The proposed UV dosimeter enables users to control a skin sunburn level caused by UV light from the sun and artificial sources, and visually monitor how much harmful radiation has been delivered to a surface, which helps them see if surfaces have received enough energy to kill bacteria, viruses, and spores – including Covid-19. The proposed UV dosimeter is environmentally safe, exhibits excellent photochromic properties, improved photosensitivity, high spatial resolution. It can be efficiently reused over 200 cycles without compromising its readability. | https://icsp7.tsu.ge/data/file_db/icsp7/abstracts_21.07icsp7.pdf |
| 5- st International Caucasian Symposium on Polymers and Advanced Materials | Tbilisi, Georgia | 2017 | 2-5 ივლისი | Ivane Javakhishvili Tbilisi State University | New Technical Access for Creation of Gradually Oriented Polymers and Process’s Modeling | oral | One of the actual directions of modern polymer science is creation and research of graded materials with different (mechanical, optical, electrical, magnetic, etc.) properties. There are different methods of receiving such materials. We have developed and patented the original technical solution for obtaining graded polymer and composite materials, according to which the creation of gradient of properties is conditioned by graded orientation of isotropic materials. Graded orientation is created using specific devices. The improvement of the technical characteristics of these devices significantly contributes to the development of graded material science. The constriction of the addon device is proposed that allows to carry out of graded orientation in combination of addon device with any standard stretching machine. A mathematical model of graded orientation of polymer materials is developed, which enables to work out polymer materials with preset dimensions and distribution of relative elongation. | https://www.icsp.tsu.ge/data/file_db/icsp/ICSP%205%20(TSU)_61433.pdf |
