Article
Polymer Science
Mohammed Al-Yaari, Ibrahim Dubdub
Summary: The pyrolysis of waste PVC is a promising treatment method, with kinetics and thermodynamics of the process investigated using various models to determine activation energies and suitable solid-state reaction mechanisms for the two reaction stages. The study confirmed that both reactions are endothermic and nonspontaneous, with the potential for promising bioenergy production. Additionally, a highly efficient artificial neural network model was developed to predict weight loss during PVC pyrolysis based on temperature and heating rate.
Article
Polymer Science
Jinsheng Duan, Zhaogang Liu, Guifang Du, Jiameng Feng, Jingang Zhao, Peijie Jia, Yanhong Hu, Jinxiu Wu
Summary: Lanthanum terephthalate (LTP) was synthesized and used as a heat stabilizer for polyvinyl chloride (PVC). The effects of LTP on thermal stability and discoloration of PVC were studied. LTP exhibited poor anti-discoloration performance but satisfactory long-term stability. When mixed with other compounds, LTP showed excellent antidiscoloration and long-term static stability, ensuring good dynamic thermal stability, processing, and mechanical properties. The thermal stability mechanism of LTP in PVC involved absorbing HCl gas to inhibit PVC degradation.
IRANIAN POLYMER JOURNAL
(2023)
Article
Biochemistry & Molecular Biology
John J. Guardiola, Josiah E. Hardesty, Juliane I. Beier, Russell A. Prough, Craig J. McClain, Matthew C. Cave
Summary: Through plasma metabolomics analysis, it was found that the plasma metabolome was differentially regulated in polyvinyl chloride workers who developed hepatic hemangiosarcoma, involving various metabolic pathways and biological processes such as inflammation and oxidative stress. Potential biomarkers and ontologies related to hemangiosarcoma pathogenesis were identified.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Engineering, Environmental
Zhuozhi Ouyang, Shuxing Li, Manyi Zhao, Quzong Wangmu, Rui Ding, Chuanqi Xiao, Xuetao Guo
Summary: This study investigates the aging behavior of PVC accelerated by UV/PS system, showing significant changes in surface morphology and chemical features, as well as the production of smaller particles and oxygen-containing functional groups. The process induced oxidation reactions predominantly by sulfate radical and reactive oxygen species, leading to the promotion of aging process.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Engineering, Environmental
Xiaolin Chen, Xianglan Bai
Summary: Polyvinyl chloride (PVC)-containing waste streams are difficult to recycle due to the high chlorine content. A novel recycling approach was developed to leverage PVC as an asset. Co-conversion of red oak and PVC in a green solvent resulted in the production of valuable compounds and chlorine-free solid fuels.
Article
Engineering, Environmental
Sanad Altarawneh, Mohammad Al-Harahsheh, Chris Dodds, Adam Buttress, Sam Kingman
Summary: Thermal co-treatment of Electric Arc Furnace Dust (EAFD) and polyvinyl chloride (PVC) provides a viable route for reprocessing these hazardous materials within the circular economy. Research shows that ZnFe2O4 plays a catalytic role in the degradation of PVC.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2022)
Article
Polymer Science
You Shu, Qionglin Luo, Mingliang Wang, Yuejun Ouyang, Hongwei Lin, Liping Sheng, Shengpei Su
Summary: This study demonstrated that the introduction of L-PVAc into PLA can significantly improve the mechanical and thermal properties of the composites. Furthermore, at a L-PVAc content of 20.0 wt%, the impact strength, elongation at break, glass transition temperature, melting temperature, and degree of crystallinity of the composites were significantly increased compared to pure PLA.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Polymer Science
Yanqin Shi, Lukai Chen, Songyan Lu, Yuchen Yao, Si Chen, Huiwen He, Meng Ma, Xu Wang
Summary: A new organic zinc thermal stabilizer, zinc arginine stearate [Zn(Arg)(St)], has been designed by introducing arginine and stearate to the same zinc atoms to regulate the binding energy. Experimental results show that Zn(Arg)(St) has excellent thermal stability properties, including initial whiteness and whiteness retention time. The thermal stability mechanism can be attributed to the replacement of unstable chlorine atoms by arginine and stearate anions, as well as the inhibition of zinc burning and autocatalytic effects. Zn(Arg)(St) also exhibits remarkable lubrication effect, further enhancing the thermal stability of PVC.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Thermodynamics
Sanad Altarawneh, Mohammad Al-Harahsheh, Chris Dodds, Adam Buttress, Sam Kingman
Summary: This study investigated the degradation kinetics and pyrolysis behavior of Poly (vinyl chloride) (PVC) and its mixture with ZnO using thermogravimetric analysis. The results showed that the ZnO-PVC mixture had more decomposition/volatilization stages compared to pure PVC. Zinc oxide played a key role in the de-hydrochlorination process, forming zinc oxy/hydroxide chloride phases and reducing the activation energy for PVC decomposition.
THERMOCHIMICA ACTA
(2022)
Article
Engineering, Environmental
Xiaoluan Lu, Xiaoqian Ma, Zhen Qin, Xinfei Chen, Limei Chen, Yunlong Tian
Summary: The study found that the co-hydrothermal carbonization method can efficiently convert sewage sludge and polyvinyl chloride into hydrochar, removing heavy metals and reducing toxicity. The performance of hydrochar is influenced by the mixing ratio, with a 7:3 ratio of SS to PVC showing the best fuel properties.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Polymer Science
Yanqin Shi, Songyan Lu, Biao Ma, Si Chen, Meng Ma, Huiwen He, Xu Wang
Summary: The bis-uracil derivative USU-C with a long aliphatic chain exhibited better migration resistance and thermal stability compared to OSU, allowing PVC samples containing USU-C to maintain good transparency and low haze over time. A new design method based on Hansen solubility parameters theory was proposed to enhance the transparency and thermal stability effect of thermal stabilizers on PVC. The relationship between HSP and the carbon atom number in the long aliphatic chain of bisuracil derivatives was derived, providing guidance for the structure design of new derivatives for PVC and other organic thermal stabilizers.
POLYMER DEGRADATION AND STABILITY
(2021)
Article
Instruments & Instrumentation
Justin Neubauer, Zakai J. Olsen, Zachary Frank, Taeseon Hwang, Kwang J. Kim
Summary: This study investigates the sensing properties of polyvinyl chloride (PVC) gels as soft electroactive polymers (EAPs) for soft robotic applications. It demonstrates the high sensitivity of PVC gels in mechanoelectrical transduction and proposes a theoretical framework for this process. The study also uncovers an interesting phenomenon and examines the hysteresis effect. Overall, the research showcases the mechanoelectric ability of PVC gels and provides a foundation for further application development.
SMART MATERIALS AND STRUCTURES
(2022)
Article
Energy & Fuels
Gamzenur Ozsin, Melis Alpaslan Takan, Arda Takan, Ayse Eren Putun
Summary: This study aims to estimate the mass loss of PVC during pyrolysis and combustion using an artificial neural network (ANN) model. The results show that ANN models can accurately predict complex systems with high R-2 values.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Review
Polymer Science
Zouhair Ait-Touchente, Maya Khellaf, Guy Raffin, Noureddine Lebaz, Abdelhamid Elaissari
Summary: PVC recycling is crucial for mitigating environmental impact and reducing greenhouse gas emissions. Challenges such as low yield and high energy consumption exist. European initiatives and collaborations play a key role in promoting PVC recycling.
POLYMERS FOR ADVANCED TECHNOLOGIES
(2023)
Article
Energy & Fuels
Zhiyuan Li, Yaji Huang, Zhicheng Zhu, Haoqiang Cheng, Jiaqi Zhao, Mengzhu Yu, Wentao Xu, Qi Yuan, Tengfei He, Sheng Wang
Summary: This study investigates the behavior of heavy metals during co-pyrolysis of sewage sludge and PVC plastics. The results indicate that temperature and added PVC/CaO have an effect on the content of As,Pb,and Zn in biochar, with CaO having the opposite effect. PVC inhibits the transformation of heavy metals. Higher temperature and extra CaO can reduce the ecological risk of heavy metals, while the added PVC increases the risk.
Article
Polymer Science
Tetsu Sato, Mariko Takahashi, Takeshi Saito, Masahito Toyonaga, Itsuo Tanuma, Rie Yamada, Satoru Hosoda
Summary: An automatic evaluation system for photooxidation has been developed and successfully applied to assess the photo-OIT of LDPE samples containing photooxidation stabilizers. The system allows independent setting of various measurement conditions and provides detailed information on the photooxidation process.
POLYMER DEGRADATION AND STABILITY
(2024)
Article
Polymer Science
Zongzheng Zuo, Shuxue Zhou
Summary: In this study, three fluoroalkyl trimethoxysilane (FATMS) additives with different chain lengths were incorporated into a two-component polyurethane clearcoat to improve its hydrophobic durability. The coatings modified with FATMS maintained their surface hydrophobicity under various conditions, but quickly lost it when exposed to both UV irradiation and/or high temperature with water. The results suggest that the FATMS route is more suitable for indoor applications at room temperature.
POLYMER DEGRADATION AND STABILITY
(2024)
Article
Polymer Science
Song Li, Feng Zhao, Xueya Wang, Zhihua Liu, Jingze Guo, Yutong Li, Shuangmei Tan, Zhenxiang Xin, Shuai Zhao, Lin Li
Summary: Green flame retardants have garnered attention for their environmental friendliness, but current options fall short in achieving high flame retardancy for flammable polymers and maintaining environmental protection. This study takes a two-pronged approach to address flame retardants and the flame-retardant process. An eco-friendly bio-based synergistic flame retardant (PAU), synthesized using phytic acid (PA) and urea (U), is used to create a flame retardant coating that can be directly applied to any surface shape using polydopamine as an adhesive. The resulting EPS-PAU exhibits excellent flame retardancy, smoke suppression, and light weight while only slightly increasing the density.
POLYMER DEGRADATION AND STABILITY
(2024)
