Diamide derivatives as photostabilizers for plasticized poly(vinyl chloride)

Rabie, Samira T.; Khalil, Ahmed M.; Nada, A. A.

doi:10.1002/vnl.20166

Cited by 19 publications

(11 citation statements)

References 21 publications

(24 reference statements)

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“…PVC, which comes second just to polyethylene in production and utilization of the plastics, is utilized as a part of a vast scope of household and mechanical items, from overcoats and shower drapes to window outlines and indoor plumbing. Additionally, it is widely used in other applications with antibacterial products as water hoses and flooring . In the medical field, PVC and other polymers are commonly used to make indwelling catheters.…”

Section: Introductionmentioning

confidence: 99%

Thiazole derivatives‐functionalized polyvinyl chloride nanocomposites with photostability and antimicrobial properties

Gaballah

Khalil

Rabie

2018

Vinyl Additive Technology

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Polyvinyl chloride (PVC) was modified via substitution reaction with 2-aminothiazole and ethyl 2-aminothiazole-4-carboxylate separately in the absence and in presence of silver (AgNPs) or copper (CuNPs) nanoparticles, using metal salts as precursors, in 3% (w/w) with respect to PVC. The functionalized PVCnanocomposites have been characterized via FTIR, 1 HNMR spectroscopic analyses, in addition to the morphological investigation such as scanning (SEM) and transmission electron microscopy (TEM). Spectral data confirmed the introduction of the thiazole (ester) to the PVC backbone. TEM analysis showed that the sizes of the AgNPs and CuNPs have fallen in the range of 10-30 nm and 30-50 nm for the prepared nanocomposites, respectively. Evaluating the photostability of modified nanocomposites was estimated by following the extent of discoloration for UV-irradiated samples colorimetrically in accordance with the irradiation time. The antimicrobial activity of the modified nanocomposites was explored against three Gram+ve bacteria (Bacillus subtilis, Staphylococcus aureus, and Streptococcus faecalis), three Gram-ve bacteria (Escherichia coli, Neisseria gonorrhoeae, and Pseudomonas aeruginosa), and two fungi (Candida albicans and Aspergillus flavus). Aminothiazole (ester)-functionalized PVC exhibited significant antimicrobial efficiencies against the investigated pathogens. However, incorporation of AgNPs or CuNPs to the modified PVC enhanced their inhibitory effect against the microorganisms under investigation. J. VINYL ADDIT. TECHNOL., 25:E137-E146, 2019.

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Section: Introductionmentioning

confidence: 99%

Thiazole derivatives‐functionalized polyvinyl chloride nanocomposites with photostability and antimicrobial properties

Gaballah

Khalil

Rabie

2018

Vinyl Additive Technology

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“…Chlorine atoms increase the chain attraction and, therefore, enhance the hardness and stiffness of the polymer [ 6 ]. PVC undergoes dehydrochlorination, upon light exposure, to produce conjugated polyenes that lead to discoloration [ 7 , 8 , 9 ]. Therefore, the mechanical and physical properties of PVC have to be enhanced to resist the changes caused by irradiation or high temperature.…”

Section: Introductionmentioning

confidence: 99%

Polyphosphates as Inhibitors for Poly(vinyl Chloride) Photodegradation

et al. 2017

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Three polyphosphates were used as inhibitors for poly(vinyl chloride) (PVC) photodegradation. The polyphosphates were added to PVC at a concentration of 0.5% by weight. The PVC films (40 µm thickness) were irradiated at room temperature with ultraviolet (UV) light for up to 300 h. The changes in PVC films after irradiation were monitored by Fourier transform infrared spectroscopy, weight loss, viscosity-average molecular weight determination, and atomic force microscopy. These changes were very noticeable in the blank PVC films compared to the ones obtained when additives were used. The polyphosphates can inhibit the PVC photodegradation through direct absorption of UV light, interactions with PVC chains, and acting as radical scavengers.

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“…Lately, researchers have used substituted benzothiazole and benzimidozole ring as photostabilizers for rigid1 PVC. 1They have also1، used 1,3,4-oxadiazole and 1,3,4-thiadiazole derivatives as novel photostabilizers for rigid1PVC and some، synthesized1organic، compounds as1 N-substituted1 maleimides, N-phenyl pyrazolone, phenyl urea, some glucoside derivatives, and other1organic compounds to be used as photostabilizers for1PVC (14)(15)(16)(17)(18). In this study, a series of new diamine derivatives have been، synthesized and studied their use as a photostabilizers1for poly(vinyl chloride).…”

Section: Introductionmentioning

confidence: 99%

Diamine Derivatives as Photostabilizers for Thermoplasticized Poly(Vinyl Chloride) [I]

Journal¹

2018

Baghdad Sci.J

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The photostabilization? of poly vinyl chloride (PVC) ? films has been investigated by using diamine derivatives. The? (PVC) films were? contained 0.5% weight? of diamine derivatives which prepared by the method of casting. The photostabilizations? ?of these compounds were determined by monitoring the carbonyl index value with irradiation time. Also, the effect ?of concentrations of additives (range 0.1-0.5wt) on the rate of photostabilization? process was studied. Therefore we found? that a increased photostabilization rates was increase with increasing? concentrations of compound. Besides, the influence? on film thickness? of photostabilization process was also studied; ?and the results? showed that? the increasing of film thickness increase the rate of photostabilization. Also, the changes in the viscosity? of the averagee molecular weight, the degree? of deterioration (?) and the average number of chain scission (s) were tracked, it was concluded? that the random chain scission is always occurs in PVC film, also Quantum yield? of the chain? scission of? these compounds? was calculated. Several mechanisms? have been? suggested and according to experimental results obtained, these mechanisms are dependent on the structure? of? the additive, Among UV absorper? and radical? scavenger.

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Diamide derivatives as photostabilizers for plasticized poly(vinyl chloride)

Cited by 19 publications

References 21 publications

Thiazole derivatives‐functionalized polyvinyl chloride nanocomposites with photostability and antimicrobial properties

Thiazole derivatives‐functionalized polyvinyl chloride nanocomposites with photostability and antimicrobial properties

Polyphosphates as Inhibitors for Poly(vinyl Chloride) Photodegradation

Diamine Derivatives as Photostabilizers for Thermoplasticized Poly(Vinyl Chloride) [I]

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