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Diamide derivatives as photostabilizers for plasticized poly(vinyl chloride)
Author(s) -
Rabie S.T.,
Khalil A.M.,
Nada A.A.
Publication year - 2008
Publication title -
journal of vinyl and additive technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.295
H-Index - 35
eISSN - 1548-0585
pISSN - 1083-5601
DOI - 10.1002/vnl.20166
Subject(s) - plasticizer , vinyl chloride , photodegradation , phthalate , polymer , dibutyl phthalate , diethyl phthalate , polyvinyl chloride , materials science , polymer chemistry , viscosity , chemistry , chemical engineering , organic chemistry , composite material , catalysis , copolymer , photocatalysis , engineering
Some diamide derivatives have been prepared, characterized, and investigated as photostabilizers for plasticized poly(vinyl chloride) (PVC), containing dioctyl phthalate and dibutyl phthalate in a concentration of 30% by weight of the polymer. The stabilizing efficiency of the prepared diamides was evaluated by determining the weight loss percentage that resulted from HCl evolution during the photodegradation process. Moreover, the efficiency was evaluated by determining the amount of gel formed as well as the intrinsic viscosity of the soluble fractions of the photodegraded polymer. The extent of discoloration of the photodegraded stabilized and plasticized PVC was also investigated. The stabilization mechanism and the effect of plasticizers on the photostability of PVC are discussed. J. Vinyl Addit. Technol., 2008. © 2008 Society of Plastics Engineers