of Wassit, U., Kadhim Abaies - College of science, J. (2009). Temperature Variation Effect on Behavior of Block Copolymer of 2- Isopropenylnaphthalene and Methacrylic Acid in Ethanol. , 2(1), 106-114.
University of Wassit; Jawad Kadhim Abaies - College of science. "Temperature Variation Effect on Behavior of Block Copolymer of 2- Isopropenylnaphthalene and Methacrylic Acid in Ethanol". , 2, 1, 2009, 106-114.
of Wassit, U., Kadhim Abaies - College of science, J. (2009). 'Temperature Variation Effect on Behavior of Block Copolymer of 2- Isopropenylnaphthalene and Methacrylic Acid in Ethanol', , 2(1), pp. 106-114.
of Wassit, U., Kadhim Abaies - College of science, J. Temperature Variation Effect on Behavior of Block Copolymer of 2- Isopropenylnaphthalene and Methacrylic Acid in Ethanol. , 2009; 2(1): 106-114.

Temperature Variation Effect on Behavior of Block Copolymer of 2- Isopropenylnaphthalene and Methacrylic Acid in Ethanol

Journal Of Wassit For Science & Medicine
Article 1, Volume 2, Issue 1, 2009, Pages 106-114
Authors
University of Wassit; Jawad Kadhim Abaies - College of science
Abstract
Fluorescence spectra of dilute solution of blockcopolymer of 2- Isopropenylnaphthalene and methacrylic acid ( 2- IPN – MA) in ethanol have been measured in temperature range of 9.5 – 50˚C . The fluorescence spectra show two emission bands at 342 nm and 387nm corresponding to monomer and excimer bands, respectively. From temperature dependent fluorescence measurements a plot of excimer to monomer intensity ratio ( IE/IM ) versus temperature was obtained , which shows that ( IE /IM ) value increases linearly in the temperature range of 9.5-25˚C and sharp increasing at a bout 35˚C ,then IE/IM increases smoothly above 35˚C . These results Indicate that the conformational change of the polymer chain from contraction form to expansion form takes place at about 35˚C.
Statistics
Article View: 187
PDF Download: 32


Journal Management System. Powered by iJournalPro.com