Enhanced photodegradability of PVC plastics film by codoping nano-graphite and TiO2

Zhang, Yan; Sun, Tianyi; Zhang, Da‐Shuai; Shi, Zaifeng; Zhang, Xiaopeng; Li, Chen; Wang, Lili; Song, Junjun; Lin, Qiang

doi:10.1016/j.polymdegradstab.2020.109332

Cited by 62 publications

(20 citation statements)

References 42 publications

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“…Such as nano-titanium dioxide is an efficient, environmentally protective, nontoxic photodegradation catalyst that can block hydrogen chloride formation and can also react with hydrogen chloride. Other examples include improvement of the photodegradation performance of titanium dioxide by VC [14], ultrafiltration membranes made from Chlorinated poly(vinyl chloride) EPVC/TiO 2 nanocomposite [15], the effect of UV light on the mechanical properties of PVC/TiO 2 nanocomposites [16], co-doping of nano-graphite and TiO 2 to enhance the photodegradation of PVC films [17], the effect of titanium dioxide particles on the mechanical properties of QUV accelerated aging PVC composites [18], application of polymer-supported titanium dioxide photo-catalyst in environmental remediation [19], the influence of TiO 2 on the thermal behavior of PVC composites [20], elimination of degradability of plasticized polyvinyl chloride by an oxygen control tube [21], dehydrochlorination of PVC materials at high temperature [22], flame retardant modification of plasticized PVC without heavy metal stabilizer [23], degradation kinetics of polyvinyl chloride containing Ca and Sn at low temperature [24], effects of titanium dioxide on chemical and molecular changes of QUV accelerated aging PVC wall panels [25]. When using nano titanium dioxide, folic acid can improve its poor compatibility with PVC [26].…”

Section: Introductionmentioning

confidence: 99%

Dehydrochlorination study of plasticized poly(vinyl chloride) contianing modified titanium dioxide, cerium stearate, organotin and β-diketone complex after long-term storage

Chen

et al. 2022

Mater. Res. Express

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Understanding the influence of additives on the dehydrochlorination of plasticized poly(vinyl chloride) (PVC) from the source and long-term storage is an attractive topic. In this work, the effects of folic acid modified nano titanium dioxide (FANT)、cerium stearate, organotin and β -diketone compound additives on the dehydrochlorination of plasticized PVC and long-term storage were investigated using conductivity measurements. The results showed that the induction time of hydrogen chloride removal of plasticized PVC (C-1) containing composite stabilizer at 200°C were 243% higher than those of the control (S1). After storage, the heat stability of the control decreased significantly. Instead, the induction time and stability time of plasticized PVC containing FANT, cerium stearate, organotin and β- diketone composites were significantly enhanced at 200°C. The thermal stability sequence from difficult to easy for removal of hydrogen chloride was : 3.0 phr (1.90% wt) (C2) >1.0 phr (0.64% wt) (C1) > 5.0 phr (3.17% wt) (C3) with FANT. It is inferred that this is due to the FANT's hydrogen bonding van der Waals force and the complexation reaction of variable valence metal Ce+3/Ce+4 with C-Cl bond in PVC polymer molecule. The induction time (min) of hydrogen chloride removal at 200°C before and after storage is as follows: C-20 (71.9) > C-10 (70.6) > C-1 (60.7) > C-3 (57.2) > C-30 (52.7) > C-2 (49.9) > S1 (25.3) > S10 (19.7). The critical temperature for hydrogen chloride removal by the composite film is around 210°C. If the content of FANT increased to 3.17%, the intermolecular force and repulsive force in PVC system offset each other, indicating that the increase of FANT content will lead to the increase of repulsive force with PVC. A certain amount of FANT, cerium stearate, organotin and β- diketone composites has a significant synergistic effect on the thermal stability of PVC.

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Section: Introductionmentioning

confidence: 99%

Dehydrochlorination study of plasticized poly(vinyl chloride) contianing modified titanium dioxide, cerium stearate, organotin and β-diketone complex after long-term storage

Chen

et al. 2022

Mater. Res. Express

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“…Apart from PE and PP, the photodegradation of other plastic waste such as PS and PVC have also been widely investigated. [134][135][136][137][138][139][140][141][142][143][144] For example, Zhang and co-workers recently reported the complete mineralization of PS microplastics by 30 nm TiO 2 nanoparticle photocatalysts fabricated with Triton X-100 as a nonionic surfactant (Figure 6a). [143] Mass spectrometry and in situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) experiments were performed to understand the photodegradation mechanism.…”

Section: Photodegradation Process and Mechanismmentioning

confidence: 99%

Photocatalytic Conversion of Plastic Waste: From Photodegradation to Photosynthesis

Chu

Zhang

Zhao

et al. 2022

Advanced Energy Materials

123

106

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Plastic waste remains a global challenge due to the massive amounts being produced without satisfactory treatment technologies for recycling and upcycling. Photocatalytic processes are emerging as green and promising approaches to upcycle plastics into value‐added products under mild conditions using sunlight as the energy source. In this review, the recent advances in plastic conversion through photocatalysis have been comprehensively summarized. Special emphasis is placed on the photocatalytic mechanism and the selective CC and CH bond transformations of plastics to access fuels, chemicals, and materials. Finally, the challenges and the perspectives on establishing a new paradigm toward a sustainable and circular plastic economy are also put forward.

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“…In order to enhance the properties of asphalt, some recent studies have mixed with asphalt [12,[19][20][21][22][23][24][25]. Nano silica (SiO 2 ) (NS), which is an inorganic compound, is also widely used as an additive to improve the properties of the asphalt material.…”

Section: Introductionmentioning

confidence: 99%

“…Polyvinyl chloride (PVC) is a very popular plastic used extensively all over the world. However, large amounts of PVC are wasted every year, which also causes serious environmental pollution [ 12 ]. Thus, efficient use of waste PVC has become imperative for effective nationwide waste management performance.…”

Section: Introductionmentioning

confidence: 99%

Properties of Stone Matrix Asphalt Modified with Polyvinyl Chloride and Nano Silica

2021

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In this study, the effects of polyvinyl chloride (PVC) and nano silica (NS) as modifiers on the properties of stone matrix asphalt (SMA) were studied. The experiment was performed with five modes: 1% NS was mixed into SMA; 5% PVC was mixed into SMA; and the ratio of NS was changed (1, 2, and 3%) with 5% PVC being mixed into SMA. The properties of modified and unmodified SMA materials were determined and compared by performing the penetration test, softening points test, viscosity measurements, dynamic shear rheometry, and multiple stress creep recovery under aging conditions. Moreover, the properties of the modified SMA were also determined in terms of Marshall stability, water stability, and rutting resistance. The obtained results indicate that the physical properties of SMA materials could be significantly improved by using a combination of PVC and NS as a modifier. Moreover, the SMA mixtures modified with PVC and NS exhibited high Marshall stability, good moisture damage resistance, and rutting resistance. Modified SMA mixtures with 5% PVC and 1% NS exhibited the best quality. This research has opened up a new avenue for the development of effective additives for SMA materials.

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Enhanced photodegradability of PVC plastics film by codoping nano-graphite and TiO2

Cited by 62 publications

References 42 publications

Dehydrochlorination study of plasticized poly(vinyl chloride) contianing modified titanium dioxide, cerium stearate, organotin and β-diketone complex after long-term storage

Dehydrochlorination study of plasticized poly(vinyl chloride) contianing modified titanium dioxide, cerium stearate, organotin and β-diketone complex after long-term storage

Photocatalytic Conversion of Plastic Waste: From Photodegradation to Photosynthesis

Properties of Stone Matrix Asphalt Modified with Polyvinyl Chloride and Nano Silica

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