This paper is dealing with formulation of photodegradable films based on polyethylenecassava starch blend using benzophenone/antraquinone or Fe(II) compound as photosensitive compound. Benzophenone, antraquinone and Fe(II) compound were synthesized in the laboratory and characterized by IR and NMR spectra. The films were obtained by extrusion-blowing method and showed good mechanical properties. They were exposed outdoor and indoor for photodegradability testing. It showed that after four months outdoor their tensile at break decreased 85% and elongation at break about 90%.
Tuyển tập các báo cáo nghiên cứu về lâm nghiệp được đăng trên tạp chí lâm nghiệp quốc tế đề tài: spectroscopie de résonance paramagnétique électronique de la photodégradation des lignines extraites du bois de pin radiata (Pinus radiata D. Don)...
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Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Photodegradation of Pollutants in Air: Enhanced Properties of Nano-TiO2 Prepared by Ultrasound
I got the opportunity to associate myself with Dr. Raj Pal Singh, senior scientist, Polymer
Chemistry Division, National Chemical Laboratory Pune, as my supervisor. As an
outstanding scientist and teacher he has given me the benefit of his guidance throughout
the course work. I am grateful to him for showing me all the angles of research life.
A photopolymer is a
polymer that changes its
properties when exposed
to light, often in the
ultraviolet frequency of
spectrum.Be bonds that link one polymer chain to another.
Can be formed by chemical reactions that are initiated
Change physical properties of photopolymers.
The photocatalytic oxidation of reactive blue 2 and reactive red 120 has been studied by using TiO2 Degussa P25 as catalyst and UV-light. The formation of intermediate molecules could be predicted on the basic of point charge calculations on all the individual atoms of the dyes. The agreement between calculations from quantum theory and the results of experiments was the background to establish a pathway for degradation of reactive dyes. A plausible mechanism of dye photodegradations is discussed.