Article
Polymer Science
Zhixuan Cui, Pingping Jiang, Yan Leng, Shan Feng, Minjia Lu, Shijun Chen, Xunxun Sheng
Summary: N,N'-bis(salicylaldehyde) ethyldiamino-zinc (BSE-Zn) was synthesized from salicylaldehyde and ethylenediamine. The structure of BSE-Zn was analyzed and its thermal properties were studied. The thermal stability of BSE-Zn stabilized PVC samples was superior to the calcium zinc soaps commonly used in industry.
POLYMER DEGRADATION AND STABILITY
(2023)
Review
Chemistry, Physical
Yixuan Guo, Fabrice Leroux, Weiliang Tian, Dianqing Li, Pinggui Tang, Yongjun Feng
Summary: LDHs are efficient and environmentally friendly PVC thermal stabilizers, potentially replacing traditional toxic stabilizers like lead salts. Their thermal stabilization mechanism, chemical composition of metal layers and interlayer guests, and dispersion state in PVC composites play crucial roles in enhancing PVC thermal stability.
APPLIED CLAY SCIENCE
(2021)
Article
Polymer Science
Jolanta Tomaszewska, Tomasz Sterzynski, Damian Walczak
Summary: The study investigated the thermal stability of PVC with 1 wt % of spherical porous nanosilica prepared by roll milling at various processing times. The addition of porous nanosilica was found to improve thermal stability by absorbing HCl gas produced during dehydrochlorination reaction, resulting in minor color changes and lower evolution of hydrogen chloride gas. The results showed that TGA measurements were not sensitive enough to detect PVC degradation at processing conditions below 220 degrees C.
Article
Chemistry, Applied
Manqi Zhang, Degang Li, Tianbao Dong, Xiaoxiao Hou, Xiao Zhang, Hongliang Liu, Lihong Liu, Shouyu Tang, Shaomin Liu
Summary: A novel MFE-Al additive was developed to improve antibacterial properties and enhance high temperature sterilization resistance of PVC medical devices. Experimental data confirmed significant inhibition of bacterial growth, as well as biocompatibility with cardiomyocytes and hemocompatibility. The study suggests that MFE-Al stabilized PVC can endure multiple cycles of dry-heat sterilization without damage, potentially reducing medical waste.
JOURNAL OF VINYL & ADDITIVE TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Yixuan Guo, Qian Zhang, Qianqian Hu, Weiliang Tian, Fabrice Leroux, Pinggui Tang, Dianqing Li, Yongjun Feng
Summary: The study utilized the salt-oxide/hydroxide route to fabricate a series of Mg-2Al-CO3-LDH samples with different particle sizes, which showed excellent dispersibility and environmentally friendly thermal stability in PVC after surface-organo-modification. Among them, the sample with an average particle lateral size of approximately 220±10 nm demonstrated the best performance for thermal stability in PVC polymer.
MATERIALS TODAY COMMUNICATIONS
(2021)
Article
Engineering, Environmental
Yi-heng Lu, Bing Wang, Meng-yao Xue, Yu-wei Lu
Summary: The study found that calcium metal soap and polyol additives are replacing organotin in PVC heat stabilizers, and investigated the thermal degradation and discoloration process of stabilized PVC using isothermal thermogravimetry. Results show that organotin prolongs the thermal oxidation degradation time of PVC and provides excellent heat resistance.
Article
Materials Science, Multidisciplinary
Xiangkun Zhang, Houmei You, Jinpeng Hou, Zhong Li, Yongjun Feng, Yanjun Lin, Xun Dai, Kewei Zhang, Weiliang Tian
Summary: This study developed a narrow-gap exfoliation approach using water as a green solvent to achieve efficient and scalable production of high-quality layered vermiculite (VMT) nanosheets. The narrow-gap exfoliation equipment was also used as a coupled separation reactor for in-situ preparation of VMT-stabilized poly (vinyl chloride) with superior thermal stability.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Chemistry, Applied
Zhiyong Huo, Hongjuan Wu, Qingyi Song, Zhaoxi Zhou, Tian Wang, Jixing Xie, Hongqiang Qu
Summary: A novel flame retardant was synthesized by using chitosan-modified zinc hydroxystannate and reduced graphene oxide to enhance the performance of flexible poly(vinyl chloride). The results showed that this flame retardant could effectively reduce the heat release and smoke emission of PVC composites.
CARBOHYDRATE POLYMERS
(2021)
Article
Chemistry, Multidisciplinary
Nancy G. Bush, Mikiyas K. Assefa, Selin Bac, Shaama Mallikarjun Sharada, Megan E. Fieser
Summary: In the presence of (xantphos)RhCl catalyst, reaction of poly(vinyl chloride) (PVC) with triethyl silane in THF leads to partial reduction of PVC via hydrodechlorination. Increasing catalyst loading or using N,N-dimethylacetamide (DMA) as a solvent decreases the selectivity for hydrodechlorination. Reaction of PVC with sodium formate in THF affords excellent selectivity for hydrodechlorination along with complete PVC dechlorination, while higher catalyst loadings are required. In contrast, reaction of PVC with NaH in DMA exhibits good selectivity for dehydrochlorination and higher reaction rates.
MATERIALS HORIZONS
(2023)
Article
Chemistry, Applied
Zhimin Fu, Zhanhong Yang, Yao Rong, Lie Deng, Jian Wu
Summary: Zn-(2-hydroxybenzylidene) aspartic acid is an efficient zinc chelate stabilizer for PVC, and when blended with CaSt(2) derivatives and THAM, it significantly improves thermal stability while maintaining color stability.
JOURNAL OF VINYL & ADDITIVE TECHNOLOGY
(2021)
Article
Polymer Science
Jin-Hyeok Choi, Jeong-Jae Woo, Il Kim
Summary: Researchers synthesized α,ω-hydroxyl-terminated polycaprolactone (PCL) polyols and used them as soft segments to produce thermoplastic poly(ester ester) elastomers. Compared to conventional thermoplastic poly(ether ester) elastomers, the PCL-based TPEs exhibited superior mechanical properties and biodegradability. This study demonstrates significant potential for producing biodegradable TPEs with better properties than polyether-derived elastomers.
Article
Green & Sustainable Science & Technology
Mohammad Al-Harahsheh, Sanad Altarawneh, Mohammad Al-Omari, Mohammednoor Altarawneh, Sam Kingman, Chris Dodds
Summary: The oxidative thermal treatment of electric arc furnace dust mixed with PVC was studied to investigate the impact of oxidizing environment on the extraction of valuable metals. It was found that thermal treatment resulted in significant vaporization of lead and zinc chlorides, and that solution pH significantly affected the extraction of lead and iron.
JOURNAL OF CLEANER PRODUCTION
(2021)
Review
Polymer Science
Krzysztof Lewandowski, Katarzyna Skorczewska
Summary: This article provides a literature review on the recycling of PVC, including mechanical recycling and feedstock recycling methods. It also introduces the characteristics of PVC and its potential in the circular economy.
Article
Chemistry, Physical
Dandan Jin, Santosh Khanal, Shiai Xu
Summary: The study showed that OBPB/ZLDH could improve the thermal stability of PVC and accelerate the dechlorination and oxidation of PVC at low temperature.
APPLIED CLAY SCIENCE
(2021)
Article
Polymer Science
Carlos M. R. Abreu, Talita C. Rezende, Armenio C. Serra, Ana C. Fonseca, Rebecca Braslau, Jorge F. J. Coelho
Summary: A new strategy of internal plasticization of PVC was achieved by copolymerization of VC with n-BA and OEOA. The effect of solvent, initiator, polymerization temperature, and VC/n-BA/OEOA ratios on Tg of the resulting copolymers was investigated. The internally plasticized PVC copolymers showed lower Tg values than predicted, indicating effective plasticization of PVC. Under optimized conditions, different degrees of internal plasticization could be achieved by varying the initial monomer ratio. Importantly, the plasticizing moieties were covalently bonded to the polymer, resulting in no migration during extraction.
Article
Endocrinology & Metabolism
Andrea J. Glenn, Jie Li, Kenneth Lo, David J. A. Jenkins, Beatrice A. Boucher, Anthony J. Hanley, Cyril W. C. Kendall, Aladdin H. Shadyab, Lesley F. Tinker, Steven D. Chessler, Barbara V. Howard, Simin Liu, John L. Sievenpiper
Summary: This study analyzed the relationship between diet patterns and incident type 2 diabetes in 145,299 postmenopausal women without diabetes. The findings showed that greater adherence to the Portfolio, DASH, and Mediterranean diets was associated with a lower risk of type 2 diabetes in postmenopausal women.
Article
Nutrition & Dietetics
Jie Li, Xia Zou, Fei Zhong, Qingling Yang, JoAnn E. Manson, George D. Papandonatos, Lingling Zheng, Wen-Chih Wu, Kei Hang Katie Chan, Yan Song, Jian Kuang, Simin Liu
Summary: Prenatal exposure to the Chinese famine of 1959-1962 was associated with increased risk of diabetes in men but not in women, independent of age.
EUROPEAN JOURNAL OF NUTRITION
(2023)
Article
Green & Sustainable Science & Technology
Muhammad Zafran Raja Mohammed, Zi Wei Ng, Aditya Putranto, Zong Yang Kong, Jaka Sunarso, Muhammad Aziz, Sharif H. H. Zein, Jannata Giwangkara, Ivan Butar
Summary: This study proposes a new process design for producing glucose and furfural from palm oil empty fruit bunches. A simulation is used to develop a process flow diagram and analyze the economics of the plant. The findings show a production capacity of 10 kilotons per year of glucose and 4.96 kilotons per year of furfural, with positive NPV, IRR, and ROI.
CLEAN TECHNOLOGIES AND ENVIRONMENTAL POLICY
(2023)
Article
Medical Laboratory Technology
Jie Li, Lingling Zheng, Kei Hang Katie Chan, Xia Zou, Jihui Zhang, Jundong Liu, Qingwei Zhong, Tracy E. Madsen, Wen-Chih Wu, JoAnn E. Manson, Xueqing Yu, Simin Liu
Summary: This study aimed to explore the role of sex hormone-binding globulin (SHBG) levels in risk stratification and intervention for coronary heart disease (CHD). The findings showed that higher SHBG levels were associated with a decreased risk of CHD in both men and women. Therefore, SHBG can be used as a marker for assessing and predicting the risk of CHD.
CLINICAL CHEMISTRY
(2023)
Article
Engineering, Chemical
Songchen Xie, Ngie Hing Wong, Jaka Sunarso, Qiang Guo, Chunguang Hou, Zhiguang Pang, Yuelian Peng
Summary: This study investigated the characteristics of CaSO4 scaling and evaluated the efficiency and mechanisms of different cleaning reagents. The results showed that three cleaning solutions had similar cleaning efficiencies of approximately 96% at the surface scaling stage, but only the commercial detergent exhibited high efficiency (89%) at the pore scaling stage. Furthermore, periodic cleaning with the commercial detergent at the surface scaling stage followed by drying could completely restore the PTFE membrane performance, achieving 90% total water recovery in a 43.5-hour continuous concentration test.
Article
Chemistry, Multidisciplinary
Yazi Liu, Yue Sun, En Zhao, Weiwei Yang, Jinkai Lin, Qiang Zhong, Haifeng Qi, Aixin Deng, Shaogui Yang, Huayang Zhang, Huan He, Shaomin Liu, Zupeng Chen, Shaobin Wang
Summary: This study reports the preparation of atomically dispersed Co-Ag dual-metal sites anchored on P-doped carbon nitride (Co1Ag1-PCN) via supramolecular and solvothermal approaches, which exhibit desirable performance for photocatalytic H-2 evolution from water splitting. The optimized Co1Ag1-PCN catalyst achieves a remarkable hydrogen production rate of 1190 mu mol g(-1) h(-1) with an apparent quantum yield (AQY) of 1.49% at 365 nm, surpassing most of the newly reported metal-N-coordinated photocatalysts. The enhanced photocatalytic activity is attributed to the synergistic effect of Co-Ag dual sites with exclusive coordination configuration of Co-N-6 and Ag-N2C2, which enhances the charge density and facilitates the formation of H* intermediates.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Jing Guo, Yanqiu Zhang, Fan Yang, Bhekie B. B. Mamba, Jun Ma, Lu Shao, Shaomin Liu
Summary: A new posterior interfacial polymerization (p-IP) strategy is reported, in which a tailor-made polyamide (PA) network is constructed in situ in a two-dimensional graphene oxide (GO) membrane to enhance size exclusion and repel metal ions. This strategy addresses global water scarcity by achieving superior metal ion rejection and high permeance.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Nutrition & Dietetics
Ross L. Prentice, Sowmya Vasan, Lesley F. Tinker, Marian L. Neuhouser, Sandi L. Navarro, Daniel Raftery, G. A. Nagana Gowda, Mary Pettinger, Aaron K. Aragaki, Johanna W. Lampe, Ying Huang, Linda Van Horn, JoAnn E. Manson, Robert Wallace, Yasmin Mossavar-Rahmani, Jean Wactawski-Wende, Simin Liu, Linda Snetselaar, Barbara V. Howard, Rowan T. Chlebowski, Cheng Zheng
Summary: Based on the Women's Health Initiative observational data, a low-fat dietary pattern is beneficial for breast cancer, coronary heart disease, and diabetes. After calibrating fat intake with biomarkers, the density of fat is associated with both breast cancer and coronary heart disease, but the association with coronary heart disease weakens after controlling for other dietary variables.
JOURNAL OF NUTRITION
(2023)
Article
Engineering, Chemical
Shuangshuang Zhu, Ao Yang, Zong Yang Kong, Shirui Sun, Mengna Bai, Jaka Sunarso
Summary: Most of the current research on extractive distillation focuses on direct sequence extractive distillation (DED), while there is limited information on the design and control of indirect sequence extractive distillation (IED). This study examines the control performance of a heat-integrated IED for the separation of tetrahydrofuran (THF)/ethyl acetate (EtAc)/water. Three control strategies (CS 1, CS 2, and CS 3) are developed and compared, with CS 3 showing the best ability to maintain the purity of all three products close to the desired specification, even under feed flow and composition disturbances.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Multidisciplinary Sciences
Changwei Zhao, Yanjun Zhang, Yuewen Jia, Bojun Li, Wenjing Tang, Chuning Shang, Rui Mo, Pei Li, Shaomin Liu, Sui Zhang
Summary: By controlling the spatial and temporal aspects of interfacial polymerization, a nanofiltration membrane with fast permeation and high Cl-/SO42- selectivity has been constructed. This membrane demonstrates ultra-permeability and excellent ion-ion separation, making it ideal for sustainable water treatment applications such as water purification and desalination.
NATURE COMMUNICATIONS
(2023)
Article
Multidisciplinary Sciences
Bin Zhu, Shanshan He, Yan Yang, Songwei Li, Cher Hon Lau, Shaomin Liu, Lu Shao
Summary: A molecular soldering strategy using multifunctional polyphenols in tailored polymer chains and well-designed hollow MOF structures has been developed to create advanced mixed-matrix membranes (MMMs) with improved permeability and selectivity. This approach breaks the trade-off limit and provides a universal pathway for preparing MMMs with desirable performance for various applications.
NATURE COMMUNICATIONS
(2023)
Article
Engineering, Environmental
Guoqiang Song, Claudia Li, Wenjun Zhou, Libo Wu, Kang Hui Lim, Feiyang Hu, Tianchang Wang, Shaomin Liu, Zhifeng Ren, Sibudjing Kawi
Summary: This study reports a structure-reconstruction strategy based on a micropore-confined process to prepare yolk-shell catalysts with highly dispersed metallic nickel. The size of the nickel particles has a significant impact on the rates of methane decomposition, penetration of dissolved carbon, and growth of carbon nanotubes (CNTs), which provides an important route for the design of functionalized CDM catalysts.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Chemical
Zhengwei Zhou, Shude Zhang, Xiuxia Meng, Jian Song, Naitao Yang, Claudia Li, Sibudjing Kawi, Shaomin Liu
Summary: In this study, a La0.8Ca0.2Fe0.94O3-6-0.05Ag (LCF-Ag) hollow fiber membrane with three-layer sandwich structure was successfully prepared. The oxygen permeation flux of the membrane structure was 1.79 times higher than that of the traditional membrane structure, with a maximum oxygen flux of 2.15 mL min-1 cm-2. The membrane showed high stability during a 240-hour long-term operation, and the oxygen flux could be fully recovered by switching the sweep gas to He, indicating its good chemical stability. These results demonstrate the feasibility of the new membrane structure for oxygen separation with CO2 resistance.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Jinghu Chen, Qineng Xia, Yong Guo, Yangang Wang, Xi Li, Mingming Wang, Jieshan Qiu, Yanqin Wang, Maria Veronica Sofianos, Shaomin Liu
Summary: A Pt-loaded Nb-W composite oxide catalyst is developed for the selective hydrogenolysis of glycerol to 1,3-propanediol. This catalyst demonstrates precise activation and cleavage of secondary C-O (C(2)-O) bonds, resulting in high yield of catalytic conversion of glycerol.
Article
Chemistry, Multidisciplinary
Shuo Li, Wei-Yao Han, Zhao-Xu Wang, Yu-Jie Sun, Zilong Zheng, Ming-Jie Yin, Shaomin Liu, Quan-Fu An
Summary: High MOF-loaded mixed-matrix membranes (MMMs) with enhanced gas separation performance were developed using a 'dormancy and double-activation' strategy. The optimized MMM showed significantly improved CO2 permeability and good anti-plasticization behavior, making it suitable for carbon capture applications.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
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)
