N-substituted maleimides as photo-stabilizers for rigid poly(vinyl chloride)

Sabaa, Magdy W.; Mikhael, Michael G.; Mohamed, Nadia A.; Yassin, Ahmady A.

doi:10.1016/0141-3910(90)90041-5

Cited by 21 publications

(15 citation statements)

References 8 publications

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“…Commercial stabilizers such as plasticizers can be used to enhance photostability of PVC [11]. Photostabilizers including Schiff base complexes [12][13][14], aromatics [15][16][17] and heterocycles [18][19][20] have been used in various studies in order to increase PVC photostability. Other additives include inorganic salts and metal complexes are also common [21][22][23][24][25].…”

Section: Elemental Analysismentioning

confidence: 99%

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Photostabilizing Efficiency of Poly(vinyl chloride) in the Presence of Organotin(IV) Complexes as Photostabilizers

2016

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Three organotin complexes containing furosemide as a ligand (L), Ph 3 SnL, Me 2 SnL 2 and Bu 2 SnL 2 , were synthesized and characterized. Octahedral geometry was proposed for the Me 2 SnL 2 and Bu 2 SnL 2 , while the Ph 3 SnL complex has trigonal bipyramid geometry. The synthesized organotin complexes (0.5% by weight) were used as additives to improve the photostability of poly(vinyl chloride), PVC, (40 µm thickness) upon irradiation. The changes imposed on functional groups, weight loss and viscosity average molecular weight of PVC films were monitored. The experimental results show that the rate of photodegradation was reduced in the presence of the organotin additives. The quantum yield of the chain scission was found to be low (9.8 × 10 −7 ) when Ph 3 SnL was used as a PVC photostabilizer compared to controlled PVC (5.18 × 10 −6 ). In addition, the atomic force microscope images for the PVC films containing Ph 3 SnL 2 after irradiation shows a smooth surface compared to the controlled films. The rate of PVC photostabilization was found to be highest for Ph 3 SnL followed by Bu 2 SnL 2 and Me 2 SnL 2 . It has been suggested that the organotin complexes could act as hydrogen chloride scavengers, ultraviolet absorbers, peroxide decomposers and/or radical scavengers.

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Section: Elemental Analysismentioning

confidence: 99%

“…Photostabilizers including Schiff base complexes [12][13][14], aromatics [15][16][17] and heterocycles [18][19][20] …”

Section: Introductionmentioning

confidence: 99%

Photostabilizing Efficiency of Poly(vinyl chloride) in the Presence of Organotin(IV) Complexes as Photostabilizers

2016

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“…In protecting properties of such films, very high concentrations (3%) of benzotriazole type UV absorber were used. 357 Decker addressed a very essential question for stabilization of PVC and other polymers. 355 Tinuvin P in combination with Ca/Zn stabilizer improved UV resistance but half of the original impact strength was still lost after 4478 hours in a Weather-Ometer.…”

Section: Research Findingsmentioning

confidence: 99%

Principles of Stabilization

Wypych¹

2015

PVC Degradation and Stabilization

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“…Derivatives of maleimides, anthraquinones, N-phenylsubstituted pyrazolones, and phenylurea have been prepared and investigated by Sabaa et al [9][10][11][12] as photostabilizers for rigid PVC. Substituted itaconimides were also used as photostabilizers for the rigid polymer.…”

Section: Introductionmentioning

confidence: 99%

“…This work aimed to investigate easily prepared diamide derivatives as photostabilizers for plasticized PVC containing the DOP and dibutyl phthalate (DBP) plasticizers on the basis of results obtained previously by many authors when using substituted maleimides and itaconimide derivatives as photostabilizers for both rigid and plasticized PVC [9,13,14].…”

Section: Introductionmentioning

confidence: 99%

Diamide derivatives as photostabilizers for plasticized poly(vinyl chloride)

Rabie

Khalil

Nada

2008

Vinyl Additive Technology

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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.

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N-substituted maleimides as photo-stabilizers for rigid poly(vinyl chloride)

Cited by 21 publications

References 8 publications

Photostabilizing Efficiency of Poly(vinyl chloride) in the Presence of Organotin(IV) Complexes as Photostabilizers

Photostabilizing Efficiency of Poly(vinyl chloride) in the Presence of Organotin(IV) Complexes as Photostabilizers

Principles of Stabilization

Diamide derivatives as photostabilizers for plasticized poly(vinyl chloride)

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