Article
Polymer Science
Shoucun Zhang, Shengyan Wang, Yujing Bian, Min Xue, Shengwei Guo, Wenli Wu
Summary: In this study, methyl methacrylate/methacrylic acid copolymers were synthesized by precipitation copolymerization using AIBN as the initiator. The effects of pressure, initiation concentration, MA concentration, and water content on the synthesis were investigated. The results showed that the concentration of MA or AIBN greatly influenced the molecular weight, with a maximum of 213 kDa. The morphology of the samples exhibited certain degree of agglomeration, and most samples were obtained as free-flowing powder with numerous spherical bulges.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Engineering, Chemical
Swastika Choudhury, Samit Kumar Ray
Summary: The organophilic character of PVC membrane was improved through graft copolymerization and further filling with organo clay, for sorption and pervaporation of tetrahydrofuran. Experimental data showed different flux/THF selectivity for PVC membranes grafted with different materials when treating THF.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Engineering, Chemical
Qi Liu, Shuoshuo Song, Mingqing Zhang, Jin Wang, Tingting Wang, Hongtao Jin, Joshua Bosco Barvor
Summary: The precipitation of metal cyanide complexes using quaternary ammonium salts is not suitable for cyanide effluents with low or moderate concentrations. To overcome this limitation, this study introduces PSS into a solution containing CTAB to enhance the removal efficiency of Cu and TCN. The addition of PSS and CTAB resulted in high removal rates for Cu and TCN, while the presence of thiocyanate ions reduced the removal efficiency. Industrial effluent tests confirmed the effectiveness of PSAs in removing copper cyanide.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Polymer Science
Alexander L. Kwiatkowski, Vyacheslav S. Molchanov, Alexander I. Kuklin, Yuri M. Chesnokov, Olga E. Philippova
Summary: This study investigates the structural transformation of charged hybrid surfactant/polymer micelles induced by salt concentration. The results show that small salt concentration leads to the formation of beads-on-string aggregates on polymer chains, while the addition of KCl transforms these aggregates into rods. The presence of the polymer delays the transition from spheres to rods at higher salt concentrations. The rods formed in the hybrid system are shorter than those in the polymer-free surfactant solution, indicating the stabilization of the semi-spherical endcaps by the embedded polymer. The study also reveals the localization of the polymer within the aggregates.
Review
Polymer Science
Randi Zhang, Rong Gao, Qingqiang Gou, Jingjing Lai, Xinyang Li
Summary: This review provides a general introduction to different methods and applications of precipitation polymerization, demonstrating its potential in materials science and biomedical areas.
Article
Engineering, Chemical
Gabriel Jaramillo-Soto, Samuel Alejandro Sarracino-Silva, Eduardo Vivaldo-Lima
Summary: This study experimentally addresses the kinetics of nitroxide-mediated dispersion copolymerization with crosslinking of styrene and divinylbenzene in supercritical carbon dioxide. The effect of nitroxide content on polymerization rate, evolution of molecular weight averages, gel fraction, and swelling index was studied.
Article
Polymer Science
David Sorm, Bogdana Bashta, Jan Blahut, Ivana Cisarova, Lada Dolejsova Sekerova, Eliska Vyskocilova, Jan Sedlacek
Summary: A new ethynylated Schiff base complex, [Cu(SALANI)2], was synthesized and characterized. The 1H NMR spectra of the complex were obtained and interpreted despite its paramagnetic character. Polyacetylene-type micro/mesoporous organometallic networks were prepared by copolymerization with appropriate monomers or by postpolymerization metalation. The new porous organometallic networks exhibited a high specific surface area and Cu2+ content, and showed catalytic activity in the oxidation of linalool to linalool oxide.
EUROPEAN POLYMER JOURNAL
(2023)
Article
Biophysics
Chayanan Khotchana, Pongsathon Phapugrangkul, Pakorn Opaprakasit, Dolnapa Kaewpa, Preeyaporn Chaiyasat, Amorn Chaiyasat
Summary: A novel method for preparing PLLA particles and capsules without the use of surfactant was proposed in this study. The nearly monodisperse products showed excellent inhibitory effects on microbial growth and were non-toxic to human cells.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2021)
Article
Chemistry, Inorganic & Nuclear
Hyuk-Joon Jung, Kudzanai Nyamayaro, Hassan A. Baalbaki, Chatura Goonesinghe, Parisa Mehrkhodavandi
Summary: Dinuclear indium complexes have been synthesized and characterized. The neutral indium chloride complex [(ONapNiN)InCl2]2 (4) showed high conversion and selectivity for the alternating copolymerization of cyclohexene oxide and CO2. The reactivity of the dinuclear indium chloride complex 4 differs significantly from that of the mononuclear indium chloride complex 5, suggesting a cooperative initiation mechanism involving the two indium centers in 4.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Stanna K. Dorn, Annika E. Tharp, M. Kevin Brown
Summary: The study introduces an efficient, modular, and enantioselective approach towards accessing novel variants of double-allylation reagents via Cu/Pd-catalyzed alkenylation of alkenylboron derivatives. It demonstrates a novel use of allylBdan reagent directly in a stereocontrolled allylation without initial deprotection. These allylation products are utilized in a second intermolecular allylation to access complex diol motifs, signaling the importance and utility of this method in accessing complex structural motifs in a rapid manner.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Polymer Science
Rui Liu, Zhuolin Rong, Guang Han, Xinlin Yang, Wangqing Zhang
Summary: The star multiple block copolymer s-P4VP-b-PS was synthesized and its self-assembly behavior in two selective solvents, methanol and toluene, was investigated. Significant differences were observed between s-P4VP-b-PS and linear block copolymer l-P4VP-b-PS in terms of self-assembly structures in different solvents.
Article
Nanoscience & Nanotechnology
Lin Wu, Tao Pang, Laxia Wu, Yebin Guan, Liwei Yin
Summary: This work presents a facile strategy for the generation of Fe3O4@P4VP-b-PS magnetic polymer nanocomposites, and various techniques were employed to characterize the synthesized materials.
Article
Polymer Science
Iririana Martinez, Ricardo Santillan, Iliana Fuentes Camargo, Julia Liliana Rodriguez, J. Alberto Andraca Adame, Hugo Martinez Gutierrez
Summary: Composite material films of pyridine-based polymer and metal oxides were successfully deposited by spin coating method for environmental remediation. The morphology of the composite materials was found to be dependent on the chemical nature of the oxide. The composites exhibited high performance in photocatalytic degradation reactions.
Article
Chemistry, Inorganic & Nuclear
Cui-Ting Han, Chao Yan, Tie-Qi Xu, Yong-Zheng Zhu
Summary: Rare earth catalysts with tetradentate phenol ether ligands exhibit high isoselectivity for 2-vinylpyridine polymerization, while the influence of ether chain and different types of ligands on the polymerization of 2-VP were also investigated.
Article
Chemistry, Physical
Lei Chen, Xuemei Zhang, Mi Zhou, Lin Shen, Soren Kramer, Zhong Lian
Summary: A copper-catalyzed four-component enantioselective arylsulfonylcyanation of vinylarenes has been developed, providing easy access to chiral beta-sulfonyl nitriles with high yield and enantioselectivity. The use of a bench-stable SO2 surrogate (SOgen) is crucial for achieving excellent reactivities and enantioselectivities.
Article
Materials Science, Composites
Liqin Cao, Hui Chi, Youwei Hao, Jide Wang
POLYMER COMPOSITES
(2019)
Article
Materials Science, Multidisciplinary
Yongxia Yang, Liqin Cao, Jing Li, Yong Dong, Jide Wang
MACROMOLECULAR MATERIALS AND ENGINEERING
(2018)
Article
Materials Science, Composites
Xule Yang, Wei Wang, Liqin Cao, Jide Wang
POLYMER COMPOSITES
(2019)
Article
Polymer Science
Yunxia Zhang, Liqin Cao, Fan Yue, Jide Wang
JOURNAL OF APPLIED POLYMER SCIENCE
(2020)
Article
Polymer Science
Yongxia Yang, Jing Li, Yong Dong, Jide Wang, Liqin Cao
POLYMERS FOR ADVANCED TECHNOLOGIES
(2020)
Article
Chemistry, Multidisciplinary
Xule Yang, Ligin Cao, Jide Wang, Liuping Chen
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2020)
Article
Polymer Science
Hong-yan Niu, Li-qin Cao, Xu-le Yang, Kai-nan Liu, Lu Liu, Ji-de Wang
Summary: An efficient and green synthesis method was used to prepare ZnO/PAM porous precursor materials, with ZnO NPs as metal ion source for growing MOF phase to synthesize MOF/PAM porous monolith. Increasing ZnO NPs content improved mechanical stress of the composite monolith, while ZIF-8/PAM material showed high photocatalytic efficiency in dye removal.
POLYMERS FOR ADVANCED TECHNOLOGIES
(2021)
Article
Chemistry, Multidisciplinary
Lu Liu, Liqin Cao, Hongyan Niu, Jide Wang
Summary: This study synthesized biomasses/ZIF-8 materials using four different fruit peels as carriers, which showed high degradation efficiency in dye wastewater and could be used multiple times through a simple washing process.
Article
Biotechnology & Applied Microbiology
Qianjun Long, Yunxia Zhang, Qiang Zhang, Kaibo Xu, Liqin Cao, Li Zhang
Summary: The design of multifunctional hydrogel sensor materials with comprehensive properties is discussed. A conductive, semi-interpenetrating network hydrogel was constructed using poly (vinyl alcohol), polyaniline (PANI), and poly (dimethyl diallyl ammonium chloride) (PDDA), with the assistance of the Hofmeister effect. The hydrogel exhibited excellent conductivity, mechanical strength, and sensitivity as a strain sensor material, along with temperature sensitivity, frost resistance, self-healing capability, and reusability.
BIOCHEMICAL ENGINEERING JOURNAL
(2023)
Article
Polymer Science
Maoyuan Pu, Liqin Cao, Li Zhang
Summary: The HIPE template method, using amphiphilic gelatin (GE) as the sole emulsion stabilizer, was used to prepare a stable GE-HIPE membrane and its zeolitic imidazolate framework-67 (ZIF-67) hybrid composite membrane. The ZIF-67/GE-HIPE composite membrane exhibited good lipophilicity and showed promising emulsion separation properties and organic pollutant adsorption removal ability. This work provides a strategy for the preparation of GE-based hydrophobic modified membrane and demonstrates a typical treatment of adsorption-separation of lipophilic substances.
POLYMERS FOR ADVANCED TECHNOLOGIES
(2023)
Article
Materials Science, Biomaterials
Kaibo Xu, Liqin Cao, Zhouyu Wang, Liu-ping Chen
Summary: Hemoperfusion (HP) is a prominent therapy for treating uremia, hyperbilirubinemia, and acute drug toxicity. In this study, a green preparation strategy was used to develop a HP material with good properties and strong adsorption capacity. It showed potential application value in blood and environmental purification.
ACS BIOMATERIALS SCIENCE & ENGINEERING
(2023)
Article
Polymer Science
Chuang Ma, Qian Liang, Cheng Kou, Hengqiang Zhang, Hui Wang
Summary: The silicon-based copolymer solution was prepared and the material modified by vinyltriethoxysilane showed good hydrophobicity and anti-aging properties.
POLYMER SCIENCE SERIES B
(2022)
Article
Polymer Science
Jie Zhao, Liqin Cao, Yong Dong
Summary: In this study, a sodium alginate/bentonite composite aerogel with a large specific surface area and pore volume was efficiently prepared through supercritical fluid drying. The adsorption of lysozyme by the composite aerogel reached a maximum capacity of 697 mg/g at pH 8 and initial lysozyme concentrations between 0.2 and 1.2 g/L.
Article
Chemistry, Multidisciplinary
Xiujuan Wu, Jing Li, Jide Wang, Liqin Cao
INTERNATIONAL JOURNAL OF INDUSTRIAL CHEMISTRY
(2020)
Article
Polymer Science
Chuang Ma, Hui Wang, Hengqiang Zhang, Xinxing Liu, Hongli Chen
POLYMER SCIENCE SERIES B
(2019)
Article
Chemistry, Physical
P. Belmonte, J. M. Garcia-Vargas, J. F. Rodriguez, I. Garrido, M. T. Garcia, M. J. Ramos
Summary: In this study, four polythiourethane films with different types of polyols and isocyanates were synthesized, characterized, and foamed. The results showed that the type of isocyanate greatly influenced the crystallinity and stiffness of the polymers, while the type of polyol modified the FT-IR spectra and the decomposition curve of the material with temperature. Furthermore, the choice of isocyanate also affected the properties of the foams obtained from the polymeric material.
JOURNAL OF SUPERCRITICAL FLUIDS
(2024)
Article
Chemistry, Physical
Xutao Zhu, Jianguo Yan, Shouchun Liu, Fengling Zhu
Summary: This study experimentally assessed the hydrodynamic characteristics of supercritical-pressure R134a in a horizontal circular tube. It was found that the hydrodynamic characteristic curve of R134a under supercritical pressure does not have a negative-slope region but a transition region. The transition region becomes more evident with increasing heat flux, while it weakens with increasing pressure and inlet temperature. Moreover, the onset of the transition region shifts in the direction of high mass flow rate with increasing heat flux.
JOURNAL OF SUPERCRITICAL FLUIDS
(2024)
Article
Chemistry, Physical
Stefania Mottola, Iolanda De Marco
Summary: In this study, corticosteroids were micronized with cyclodextrin using Supercritical Assisted Atomization (SAA), resulting in spherical micrometric particles with improved dissolution time.
JOURNAL OF SUPERCRITICAL FLUIDS
(2024)
Article
Chemistry, Physical
Honghai Liu, Yu Xie, Zhilan Li, Xiaokai Zhang
Summary: This study compared the effects of supercritical carbon dioxide dewatering (SCD) and conventional kiln drying (CKD) at a temperature of 55 degrees C on the dewatering rate, moisture transfer and distribution, shrinkage, and stress characteristics of bamboo strips. The results showed that SCD had a faster dewatering rate and lower shrinkage compared to CKD, but was less effective in reducing drying stress in bamboo.
JOURNAL OF SUPERCRITICAL FLUIDS
(2024)
Article
Chemistry, Physical
Tahmasb Hatami, Ozan N. Ciftci
Summary: This study fills the gap in previous research by establishing a hierarchy of significance for factors affecting SFE profitability, providing a deeper understanding of how technical and economic factors impact profitability. The findings highlight that the SFE facility becomes profitable when the extractor capacity surpasses 42 L.
JOURNAL OF SUPERCRITICAL FLUIDS
(2024)
Article
Chemistry, Physical
Tingshan Guo, Chuang He, Zhiyuan Liang, Qinxin Zhao
Summary: The initial oxidation behavior of Fe10Cr and Fe20Cr alloys in supercritical H2O and supercritical CO2 with O2 has been investigated. The results show that O2 has the highest adsorption energy on FeCr alloys and reacts faster than H2O and CO2.
JOURNAL OF SUPERCRITICAL FLUIDS
(2024)
Article
Chemistry, Physical
Vikash Chandra Roy, Jin-Seok Park, Ahmed Redwan Haque, Md Sadek Ali, Hee-Jeong Lee, Byung-Soo Chun
Summary: This research aimed to valorize brewery spent grain (BSG) using subcritical water hydrolysis (SWH) modified by six different natural deep eutectic solvents (DES) and determining their bipotentialities. The findings showed that BSG hydrolysates obtained through DES-induced SWH contained high levels of sugars, proteins, flavonoids, phenolic compounds, and essential amino acids. The hydrolysates also demonstrated antimicrobial activities, and the presence of bioactive compounds was confirmed through FT-IR analysis. This comprehensive profiling of bioactive compounds from BSG using DES-mediated SWH can contribute to the efficient valorization of BSG for industrial purposes.
JOURNAL OF SUPERCRITICAL FLUIDS
(2024)
Article
Chemistry, Physical
Kailiang Zhang, Hanyu Wang, Tong Liu, Zhu Wang, Lvxing Wang, Ping Fan, Feng Chen, Mingqiang Zhong, Bozhen Wu, Shanqiu Liu, Jintao Yang
Summary: This study investigates the influence of foam cell structure on the electromagnetic interference shielding performance of conductive polymer composite foam. The results suggest that foamed composites exhibit improved EMI shielding performance, and bimodal cell foams have higher electric conductivity but lower EMI shielding compared to uniform cell foams.
JOURNAL OF SUPERCRITICAL FLUIDS
(2024)
Article
Chemistry, Physical
Jaromir Valtr, Petr Roztocil, David Dasek, Radek Musalek, Frantisek Lukac, Jakub Klecka, Marek Janata, Mariana Arnoult-Ruzickova, Eva Mistova, Ludek Jelinek, Petr Sajdl, Jan Macak
Summary: This paper focuses on the design of an experimental facility for in-situ electrochemical testing at supercritical water conditions, including the design of the electrode system and surface insulation coating for electrode leads.
JOURNAL OF SUPERCRITICAL FLUIDS
(2024)
Article
Chemistry, Physical
Richard Djimasbe, Mikhail A. Varfolomeev, Nailya M. Khasanova, Ameen A. Al-Muntaser, Rustam R. Davletshin, Muneer A. Suwaid, Gazinur Z. Mingazov
Summary: This study confirms the capability of supercritical water to generate active hydrogen that interacts with different fractions in unconventional feedstocks, leading to synthetic oil production during hydrothermal reactions. The findings suggest that a maximum yield of 16.78% can be achieved at a temperature of 380 oC and a reaction time of 1-12 hours.
JOURNAL OF SUPERCRITICAL FLUIDS
(2024)