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

Abdallh, Mustafa; Bufaroosha, Muna; Ahmed, Ahmed; Ahmed, Dina S.; Yousif, Emad

doi:10.1002/vnl.21762

Cited by 15 publications

(10 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Thermoplastic polymers, even those specials such as the engineering polymers, experience aging during its operating lifetime. Polymer aging is a time-dependent process that may have physical and/or chemical origins [ 1 , 2 , 3 , 4 , 5 ]. Chemical aging involves chemical changes, e.g., chain scission, crosslinking, and oxidative reactions, which may modify the polymer molecular weight distribution.…”

Section: Introductionmentioning

confidence: 99%

Kinetics of thermal degradation and lifetime study of poly(vinylidene fluoride) (PVDF) subjected to bioethanol fuel accelerated aging

Silva

Contreras

Nascimento

et al. 2020

Heliyon

View full text Add to dashboard Cite

PVDF was prepared by compression molding, and its phase content/structure was assessed by WAXD, DSC, and FTIR-ATR spectroscopy. Next, PVDF samples were aged in bioethanol fuel at 60 °C or annealed in the same temperature by 30 ─ 180 days. Then, the influence of aging/annealing on thermal stability, thermal degradation kinetics, and lifetime of the PVDF was investigated by thermogravimetric analysis (TGA/DTG), as well as the structure was again examined. The crystallinity of ~41% (from WAXD) or ~49% (from DSC) were identified for unaged PVDF, without significant changes after aging or annealing. This PVDF presented not only one phase, but a mixture of α -, β - and γ -phases, α - and β -phases with more highlighted vibrational bands. Thermal degradation kinetics was evaluated using the non-isothermal Ozawa–Flynn–Wall method. The activation energy ( E a ) of thermal degradation was calculated for conversion levels of α = 5 ─ 50% at constant heating rates (5, 10, 20, and 40 °C min ─1 ), α = 10% was fixed for lifetime estimation. The results indicated that temperature alone does not affect the material, but its combination with bioethanol reduced the onset temperature and E a of primary thermal degradation. Additionally, the material lifetime decreased until about five decades ( T f = 25 °C and 90 days of exposition) due to the fluid effect after aging.

show abstract

Section: Introductionmentioning

confidence: 99%

Kinetics of thermal degradation and lifetime study of poly(vinylidene fluoride) (PVDF) subjected to bioethanol fuel accelerated aging

Silva

Contreras

Nascimento

et al. 2020

Heliyon

View full text Add to dashboard Cite

show abstract

“…S4). The FTIR spectrum of the PVC-co-P(DEHT-HA) copolymer shows characteristics absorption peaks of the two constituent polymers: 3000-2900 cm -1 (C-H stretching vibration), 1725 cm -1 (C=O of ester group of P(DEHT-HA)), 1547 cm -1 (triazole, C=N, of P(DEHT-HA)), 1439 cm -1 (δCH2 of PVC), 1252 cm -1 (δCH of PVC), 1193 cm -1 (ʋC-O of P(DEHT-HA)), 952 cm -1 (ʋCH2 of PVC), and 691 cm -1 (ʋC-Cl of PVC) [43,44].…”

Section: Synthesis and Characterization Of Pvc-co-p(deht-ha)mentioning

confidence: 99%

Efficient internal plasticization of poly(vinyl chloride) via free radical copolymerization of vinyl chloride with an acrylate bearing a triazole phthalate mimic

Rezende

Abreu

Fonseca

et al. 2020

Polymer

View full text Add to dashboard Cite

Nonmigratory internal plasticization of poly(vinyl chloride) (PVC) is achieved by synthesis of poly(vinyl chloride)-co-poly(4,5-bis(2-ethylhexyl)-1-[6-prop-2enoyloxy)hexyl]-1H-1,2,3-triazole-4,5-dicarboxylate) [PVC-co-P(DEHT-HA)] copolymers via free radical polymerization (FRP). Optimization of the polymerization temperature, solvent, initiator, and vinyl chloride / acrylate (VC/DEHT-HA) monomer ratio were systematically investigated, and the corresponding glass transition temperatures (Tg) of the resultant copolymers determined. These internally plasticized copolymers were characterized by 1 H NMR, FTIR, SEC and DMTA. The Tg values of the PVC-co-P(DEHT-HA) copolymers range from -27 to 78 ºC, and the physical properties suggest that the P(DEHT-HA) and PVC segments are miscible.Thermogravimetric analysis shows that increasing the ratio of the monomer DEHT-HA to vinyl chloride increases the thermal stability. By varying the initial VC/DEHT-HA monomer ratio, one can tune the Tg of the resulting copolymer, making both the strategy and the polymer flexible.

show abstract

“…The PVC infusion catheter still had good inhibitory effect on Pseudomonas aeruginosa after 72 h. [9] Palencia chemically modified PVC films with amino groups of dimethylamine and 1-bromoethane respectively. The results showed that the content of cationic PVC was $15% and had antibacterial activity and satisfied hemolytic property (hemolysis $7%) [10] ; (2) antimicrobial agents incorporation throughout the volume of PVC matrix. [11] The PVC film prepared by Lilian with quercetin and silver nanoparticles has a good inhibitory effect on the growth of bacteria.…”

Section: Introductionmentioning

confidence: 99%

“…Polyvinyl chloride (PVC) is an important thermoplastic material on account of its low cost and versatility [1][2][3] and is one of the most widely used medical polymers for healthcare, treatment, and diagnosis. It offers superb anti-corrosion, kink-proof, transparency, and affordability, therefore is the top choice in catheter, intravenous/ endotracheal tube and blood bag manufacture.…”

Section: Introductionmentioning

confidence: 99%

Improving antibacterial, biocompatible, and reusable properties of polyvinyl chloride via the addition of aluminum alkoxides

Zhang

Dong

et al. 2021

Vinyl Additive Technology

View full text Add to dashboard Cite

Global bacterial infections associated with conventional polyvinyl chloride (PVC) medical devices place a heavy burden on healthcare systems and thus it will be desirable if medical devices are made from antimicrobial PVC. There are numerous studies focusing on polymer surface modifications to either leach antimicrobial agents or kill pathogenic microbes upon direct contact. In this work, mannitol fumarate ester‐based aluminum metal alkoxide (MFE‐Al) additive was developed to confer simultaneously improved antibacterial property and enhanced high temperature sterilization resistance of the resultant PVC. Data obtained confirm that the MFE‐Al stabilized PVC sheets significantly inhibit 98% bacterial growth. They also show biocompatibility with cultured H9C2 cardiomyocytes and hemocompatibility in vitro. Dry heat sterilization is generally not suitable for PVC medical wares due to their poor thermal compatibility. Surprisingly, our antimicrobial‐biocompatible PVC can maintain stability at 180°C for 90 min. Such a high thermal stability indicates the MFE‐Al stabilized PVC can endure 90 cycles of dry‐heat sterilization without significant damage. This study may provide a solution to reduce PVC medical waste for a maximum benefit without compromising human health or the environment.

show abstract

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

Cited by 15 publications

References 26 publications

Kinetics of thermal degradation and lifetime study of poly(vinylidene fluoride) (PVDF) subjected to bioethanol fuel accelerated aging

Kinetics of thermal degradation and lifetime study of poly(vinylidene fluoride) (PVDF) subjected to bioethanol fuel accelerated aging

Efficient internal plasticization of poly(vinyl chloride) via free radical copolymerization of vinyl chloride with an acrylate bearing a triazole phthalate mimic

Improving antibacterial, biocompatible, and reusable properties of polyvinyl chloride via the addition of aluminum alkoxides

Contact Info

Product

Resources

About