The effect of high UV radiation exposure environment on the novel PVC polymers

Yousif, Emad; Ahmed, Dina S.; Ahmed, Ahmed A.; Hameed, Ayad S.; Muhamed, Safaa H; Yusop, Muhammad Rahimi; Redwan, Amamer; Mohammed, Salam A.

doi:10.1007/s11356-019-04323-x

Cited by 24 publications

(13 citation statements)

References 30 publications

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“…The destruction process may be caused by physical factors such as heat and UV radiation, which were used in the process of accelerated aging [49,50,51,52,53,54]. Adding a commercial anti-aging compound did not cause any change in the T 5% value of the R sample after the longest aging time, which remained close to the value of the un-aged sample.…”

Section: Resultsmentioning

confidence: 99%

The Effect of Accelerated Aging on Polylactide Containing Plant Extracts

et al. 2019

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In this study, natural extracts of plant origin were used as anti-aging compounds of biodegradable polymers. Coffee (0.5–10 wt%), cocoa, or cinnamon extracts were added to the polylactide matrix. The obtained materials were subjected to an accelerated aging process (720, 1440, or 2160 h) at 45 °C and 70% relative humidity under continuous UV radiation. The effectiveness of the tested extracts was compared to a commercially available anti-aging compound, 2 wt% of butylated hydroxytoluene. Visual evaluation, scanning electron microscopy, melt flow rate, thermogravimetry, differential scanning calorimetry, tensile strength, and impact tensile tests were performed. We show that the use of smaller amounts of tested extracts is particularly advantageous, which do not adversely affect the properties of polylactide-based materials at low contents. At the same time, their effectiveness in stabilizing tested properties during the accelerated aging process is mostly comparable to or greater than the reference compound.

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Section: Resultsmentioning

confidence: 99%

The Effect of Accelerated Aging on Polylactide Containing Plant Extracts

et al. 2019

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“…The bonds (C-C, C-H and C-Cl) of PVC are not expected to absorb light of wavelength longer than (190-220) nm. The fact that free radicals are formed due to irradiation at long wavelengths (220-370) nm, give an indication of the existence of some types of chromophores in the polymeric chain [23,29]. During UV irradiation of polymers, carbonyl, hydroxyl and polyene groups are formed due to the photo-oxidation process.…”

Section: Resultsmentioning

confidence: 99%

Photo-Physical Studies of PVC Mixed with Organotin (IV) Complexes

Ghazi

Yousif

Ahmed

et al. 2019

ANJS

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PVC undergoes through many damaging changes upon the exposure to UV light. The rate of photodecomposition constant have been calculated for PVC films as a method for evaluating the efficiency of the organotin(IV) complexes Me2Sn(L)2, Bu2Sn(L)2 and Ph3Sn(L) that are used as a photostabilizers after 300 hour of irradiation. The results have showed that the additives had reduced the rate of photodecomposition constant of PVC films significantly with comparison to PVC (blank). The (Kd) value for PVC films was the highest (1.04 × 10 2 sec 1) in the absence of any additives, and the lowest value (4.79 × 10-3 sec-1) was in the presence of dimethyltin (IV) complex. The surface morphology of PVC films examined utilizing the atomic force microscope (AFM).

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“…PVC almost covers one‐third of the disposed plastics in the world [7]. Polymer modification was found to be effective in reducing the degradability of the polymer and producing more sustainable materials [8–10]. This approach, was achieved via introducing new tethering substances to the surface of the polymer, was widely reported such as surface‐initiated polymerization technique using atom transfer radical polymerization (ATRP) [11,12] or ring‐opening metathesis polymerization (ROMP) [13], highly crosslinked structure via plasma polymerization technique [14–16], UV irradiation functionalization in the presence of photosensitizers [17,18] and so on.…”

Section: Introductionmentioning

confidence: 99%

Modification of Poly(vinyl chloride) Substrates via Schiff's Base for Photochemical Applications

Abdallh

Bufaroosha

Ahmed

et al. 2020

Vinyl Additive Technology

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Modification of poly(vinyl chloride) surface was achieved via introducing a new Schiff base containing 1,2,4‐triazole ring system to the polymer backbone. The new Schiff base containing 1,2,4‐triazole ring and the resulted homogenous polymer (PVC‐L) was characterized using Fourier‐transform infrared spectroscopy. Copper chloride was then added to coordinate with homogenous polymer to form PVC‐L‐CuII. The UV stability of the modified polymer was tested under long periods (300 h) of UV‐irradiation. The morphology of the modified surface was investigated by scanning electron microscopy. J. VINYL ADDIT. TECHNOL., 26:475–480, 2020. © 2020 Society of Plastics Engineers

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The effect of high UV radiation exposure environment on the novel PVC polymers

Cited by 24 publications

References 30 publications

The Effect of Accelerated Aging on Polylactide Containing Plant Extracts

The Effect of Accelerated Aging on Polylactide Containing Plant Extracts

Photo-Physical Studies of PVC Mixed with Organotin (IV) Complexes

Modification of Poly(vinyl chloride) Substrates via Schiff's Base for Photochemical Applications

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