Article
Engineering, Chemical
Dongwei Ma, Xiangyue Ye, Zhuo Li, Jiemei Zhou, Dinglei Zhong, Chenxu Zhang, Sen Xiong, Jianzhong Xia, Yong Wang
Summary: Ultrafiltration membranes derived from block copolymers with tunable pore structures and intrinsic surface functions are prepared by a simple spray-coating method. The addition of water as a pore-forming agent leads to phase separation during spray coating, resulting in the formation of nanoscale pores in the composite membranes. The membranes exhibit good ultrafiltration performance and intrinsic fouling resistance, making them comparable or better than those prepared by more complicated processes.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Engineering, Environmental
Dongwei Ma, Hengyi Li, Zixun Meng, Chenxu Zhang, Jiemei Zhou, Jianzhong Xia, Yong Wang
Summary: Membrane separation using carbon nanotubes (CNTs) as building blocks shows efficient removal of pathogens with high rejection rates for phage viruses and bacteria, as well as high water permeance. The developed composite membranes outperform state-of-the-art and commercial membranes, demonstrating superior performance in pathogen removal.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Chemistry, Applied
Chengtang Zhong, Xiaopeng Xiong
Summary: By utilizing a composite coating film, this study aimed to enhance the efficiency of an air purification system by trapping bacteria in the film matrix and photocatalytically inactivating them, achieving a filtration efficiency of 99.7% and a real-time photocatalytic inactivation efficiency of 99.6% for E. coli.
PROGRESS IN ORGANIC COATINGS
(2021)
Article
Polymer Science
Ling-Ying Shi, Zhixiong Fei, Qian Wang, Lin Weng, Chenxiao Yin, Jinrui Sun, Zhihao Shen
Summary: Bottlebrush block copolymers (BBCPs) are intriguing architectural polymers that can produce various anisotropic nanostructures. This study presents a method for creating ordered silicon oxide patterns and particles on substrates using solvent vapor induced thin film self-assembly of BBCPs containing polydimethylsiloxane (PDMS) and polystyrene (PS) side chains. Different morphologies, including cylindrical or stripes-like, spherical, and ordered porous structures, as well as Janus particle-like structures, were achieved through solvent vapor annealing. The Janus particle-like structures were further transformed into meso-to-macroporous silicon oxide bowls after oxygen plasma etching. The study also discussed the effects of solvent vapor and backbone length on the self-assembly behavior of the thin film.
Article
Chemistry, Multidisciplinary
Zheqin Dong, Maja Vuckovac, Wenjuan Cui, Quan Zhou, Robin H. A. Ras, Pavel A. Levkin
Summary: The rapid development of 3D printing technologies requires new materials with novel properties, such as superhydrophobic materials. A new method for 3D printing superhydrophobic macroscopic objects with bulk nanostructures has been developed, utilizing a specific ink composed of hydrophobic monomers and porogen solvents. Experimental results show that these 3D-printed objects can maintain their superhydrophobicity even after wear damage.
ADVANCED MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Daniel W. Weller, Guorong Ma, Luke A. Galuska, Song Zhang, Michael Stringer, Sophia Aracri, Weiyu Wang, Kunlun Hong, Xiaodan Gu
Summary: A new pore formation process was investigated for the manufacture of composite ultrafiltration membranes, utilizing the inherent ability of BCP to cavitate under strain for highly permeable and efficient membranes. The one-step membrane preparation process avoids tedious block removal steps. Different polymer types, molecular weights, and thicknesses influence the BCP's thin film morphology and ultimately filtration performance.
ACS APPLIED POLYMER MATERIALS
(2021)
Article
Engineering, Environmental
Hai-Ming Song, Li-Jing Zhu, Gang Wang, Hao Yang, Zhi-Xiang Zeng, Ling-Hui Wang
Summary: PVDF porous membranes prepared by non-solvent induced phase separation exhibit various crystalline forms and micro/nanostructures, showing excellent oil permeation resistance and outstanding antifouling properties.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Chemistry, Physical
Joeri Opdam, Stefan P. W. Govers, Julio Melio, Leendert G. J. van der Ven, Gijsbertus de With, Remco Tuinier, A. Catarina C. Esteves
Summary: This study systematically investigates the distribution of poly(ethylene oxide)-polydimethylsiloxane (PEO-PDMS) block copolymers in a polymer formulation for coating applications, as well as the phenomena of surface segregation and phase separation in the formulation. The results show that longer PDMS blocks reduce the interfacial tension of the liquid polymer mixture, while intermediate PDMS block lengths result in the highest PDMS concentration at the interface of cured films. The self-consistent field (SCF) computations qualitatively agree with the experimental findings and reveal changes in BCP distribution during film drying.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Polymer Science
Yu -Chen Lai, Chieh-Tsung Lo
Summary: This study investigated the phase transitions of blends comprising PS-b-PEO and PS-b-PAA. The hydrogen-bonding interaction between PEO and PAA played a key role in the microphase separation and transition behaviors. Increasing temperature weakened the hydrogen bonds and induced macrophase separation and order-to-disorder transitions. However, the repulsive interactions between PEO and PAA prevented the formation of an isotropic phase.
Article
Polymer Science
Yu-Hsuan Tseng, Yu-Liang Lin, Jhih-Hao Ho, Chun-Ting Chang, Yi-Chun Fan, Ming-Hui Shen, Jiun-Tai Chen
Summary: This study presents a clever approach to form PS-b-PEO nanorods in nanopores of AAO templates using solvent vapor annealing method, allowing for control over the internal morphologies of the nanorods by changing the annealing solvents. This technique provides a powerful tool for fabricating functional nanomaterials with unique morphologies, showing great potential for various applications.
Article
Chemistry, Physical
Jun Yan, Yongchuan Wu, Zheng Guo, Qin Su, Wenqian Xing, Jing Wen, Longcheng Tang, Junwei Zha, Jiefeng Gao
Summary: Chemical spills, especially oil spills, are becoming an increasingly serious environmental issue. In this study, an environmentally friendly emulsion spray-coating method is proposed to fabricate durable foam composites with asymmetric wettability for oil-water separation. The foam composite exhibits gradient wettability and can separate oils with different densities, with a high separation efficiency for chloroform.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Review
Chemistry, Multidisciplinary
Leiming Guo, Yong Wang, Martin Steinhart
Summary: High-performance separation membranes are crucial for ensuring sanitation in water and air, and using BCPs as a material platform is a solution to this challenge.
CHEMICAL SOCIETY REVIEWS
(2021)
Article
Engineering, Environmental
Pan Xu, Xinxue Li
Summary: This paper explores a simple method to prepare superhydrophobic TiO2/SiO2 nanoparticle coating and superhydrophobic metal mesh, sponge, and loofah for oil/water separation. The study reveals that the coating surface features nano-scale pore structure and convex nano-nipple structure, demonstrating superhydrophobic properties.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Polymer Science
Andrew Selkirk, Nadezda Prochukhan, Ross Lundy, Cian Cummins, Riley Gatensby, Rachel Kilbride, Andrew Parnell, Jhonattan Baez Vasquez, Michael Morris, Parvaneh Mokarian-Tabari
Summary: This study overcomes the kinetic challenges in the self-assembly of UHMW BCPs through precision solvent annealing, resulting in highly ordered large-period lamellar domains. The research reveals that film thickness and solvent concentration significantly affect the domain morphology.
Article
Polymer Science
Takahiro Sato
Summary: A lattice theory is proposed for block copolymer solutions near the boundary between the micellization and liquid-liquid phase separation regions. A new kinetic process of micellization is suggested, where small concentrated-phase droplets are first formed and then transformed into micelles in the early stage of micellization. Furthermore, a unique ripening process is observed in the late stage of phase separation, where the growing concentrated-phase droplet size is proportional to the square root of the time.
Article
Chemistry, Applied
Heena, Komal Sharma, Kamlesh Kumar, Bhargab Das, Raj Kumar
Summary: In this study, holographic films were prepared using an automatic film applicator, and their performance was compared with films prepared by other methods. The results showed that holographic films prepared with the automatic film applicator had higher diffraction efficiency and more uniform thickness, making them suitable for holographic applications.
PROGRESS IN ORGANIC COATINGS
(2024)
Article
Chemistry, Applied
Athira S. Vijayan, Antony Joseph, Abey Joseph, T. S. Abhijith, Baiju G. Nair, V. Sajith
Summary: Novel polydopamine functionalized ceria-zirconia nanoparticles filled water-borne epoxy nanocomposite coatings were developed to prevent microbial-induced corrosion of mild steel. The coatings exhibited exceptional anti-biofouling and anti-biocorrosion properties due to the synergistic effect of PDA functionalization and zirconium incorporation, providing significant enhancement in charge transfer resistance and coating resistance.
PROGRESS IN ORGANIC COATINGS
(2024)
Article
Chemistry, Applied
Yudan Yi, Qingyong Sun, Qijun Li, Bi Shi, Ya-nan Wang
Summary: Producing metal-free leather is an effective approach to eliminate Cr pollution and achieve sustainable development of the leather industry. However, current metal-free tanning technologies have limitations in terms of water sorption and charge properties. By using cationic amphiphilic acrylic copolymers (PSD) as retanning agents, the properties of metal-free leather can be significantly improved, including enhanced hydrophobicity, better dye absorption, and excellent filling effect.
PROGRESS IN ORGANIC COATINGS
(2024)
Article
Chemistry, Applied
Yunqing Xia, Lifen Tong, Xiaofang Feng, Hubing Xiang, Yi He, Xiaobo Liu
Summary: By incorporating functionalized nanofillers, such as polydopamine-modified graphitic carbon nitride and cerium oxide, into epoxy coatings, their corrosion resistance can be improved and their protective period can be extended.
PROGRESS IN ORGANIC COATINGS
(2024)
Article
Chemistry, Applied
Weineng Lu, Guanhao Ma, Jinqing Qu
Summary: Four novel bis-chalcone-based carbazole derivative photoinitiators were designed and synthesized in this study. Their maximum absorption wavelengths were determined and found to exhibit high molar extinction coefficients. Furthermore, a three-component photoinitiation system including bis-chalcone/iodonium/amine was successfully used to trigger the rapid and efficient photopolymerization of acrylates. The photoinitiators also showed good photo bleaching and biocompatibility, making them suitable for applications such as 3D printing and deep coating curing.
PROGRESS IN ORGANIC COATINGS
(2024)
Article
Chemistry, Applied
Xingnan Zhou, Shixian Zhang, Yiheng Song, Hongmei Qin, Chuanxi Xiong, Shan Wang, Quanling Yang, Delong Xie, Rong Fan, Dan Chen
Summary: In this study, eco-friendly 3-amino-1,2,4-triazole (ATA) molecules were used to modify graphene oxide (GO) nanosheets for improving the anti-corrosion performance of water-borne epoxy (WEP) coating. The results show that ATA modification enhances the dispersion of GO in the polymer coating and significantly improves the barrier effect.
PROGRESS IN ORGANIC COATINGS
(2024)
Article
Chemistry, Applied
Hao Fu, Wei Bing, Xushibojie Liu
Summary: In this study, temperature-sensitive coatings with bacteria-killing and bacteria-releasing functions were prepared on silicone rubber surfaces by UV polymerization and UV photocatalysis. The modified surface exhibited strong and persistent bactericidal effect, inhibiting the formation of bacterial biofilm. Moreover, the smart surface can effectively release bacteria and resist bacterial adhesion through temperature changes. The modified silicone rubber surface showed good biocompatibility without cytotoxicity.
PROGRESS IN ORGANIC COATINGS
(2024)
Article
Chemistry, Applied
Lee Eyann, Zulkifli Mohamad Ariff, Mohamad Danial Shafiq, Raa Khimi Shuib, Muhamad Sharan Musa
Summary: By investigating the effect of MAA addition on the properties of the WEA core-shell emulsion, film and coating, it was found that MAA can significantly impact the structure and performance of the coatings, and has great potential for applications.
PROGRESS IN ORGANIC COATINGS
(2024)
Article
Chemistry, Applied
Jinkyu Choi, Kyung Hoon Min, Byeong Seok Kim, Sung-Hyeon Baeck, Sang Eun Shim, Yingjie Qian
Summary: A novel phosphorus-based flame retardant was designed by incorporating aryl groups, which effectively improved the flame retardancy and mechanical properties of polyurethanes.
PROGRESS IN ORGANIC COATINGS
(2024)
Article
Chemistry, Applied
Saowaluk Taechutrakul, Thananchai Piroonpan, Beata Paulina Rurarz, Slawomir Kadlubowski, Piotr Ulanski, Wanvimol Pasanphan
Summary: This study proposes the use of nanogels to disperse and stabilize water-insoluble organic pigment particles in water-based inks. The nanogels were prepared using electron beam-induced chemical reactions and showed good dispersion and stabilization properties. The use of nanogels in ink formulation improved the ink's hiding power, lightfastness, and resistance properties.
PROGRESS IN ORGANIC COATINGS
(2024)
Article
Chemistry, Applied
Shan Wan, Huikai Chen, Bokai Liao, Xingpeng Guo
Summary: In this study, 2-amino-5 mercapto-1,3,4-thiadiazole (ATT) was used as an intercalating agent to prepare ATT/BNNS nanofillers via a liquid-phase assisted ultrasound method. TEM results showed that ATT successfully exfoliated BNNS and reduced agglomeration. The WEP ATT/BNNS coating exhibited the best protective performance under saline immersion due to the combined action of ATT inhibitor and BNNS physical barrier.
PROGRESS IN ORGANIC COATINGS
(2024)
Review
Chemistry, Applied
Lijie Yin, Bo Zhang, Ming Tian, Nanying Ning, Wencai Wang
Summary: This paper reviews the recent progress in the synthesis of bio-based waterborne polyurethanes (BWPU) and focuses on its applications in coatings, adhesives, and antimicrobials. BWPU has attracted much attention due to its good physical and chemical properties, no VOCs emissions, exploitation of renewable substances, and structural design-ability.
PROGRESS IN ORGANIC COATINGS
(2024)
Article
Chemistry, Applied
Yuyang Zhou, Yang Chen, Xinming Cao, Haodong Fu, Yun Li, Yonghui Zhang, Jun Ma, Xin Liu
Summary: This study proposes a strategy to fabricate a high-strength double-layer superhydrophobic actuator, which consists of a metal/glass-based superhydrophobic substrate and a polymer superhydrophobic coating. The coating has high adhesive strength, self-cleaning, anti-ultraviolet irradiation, and anti-stripping properties, along with photothermal and magnetic response capabilities, enabling its application in various fields.
PROGRESS IN ORGANIC COATINGS
(2024)
Article
Chemistry, Applied
Fengbiao Chen, Fei Gao, Xinru Guo, Yu Chen, Xuelang Gao, Liang Shen
Summary: In this study, various covalent adaptable networks (CANs) were synthesized using multifunctional amines and compared with CANs prepared from primary and secondary amines. The results showed that the performance of CANs is closely related to the crosslinking density, and increasing the content of secondary amines improves the performance but weakens the dynamics.
PROGRESS IN ORGANIC COATINGS
(2024)
Article
Chemistry, Applied
Qian Zhang, Mengyi Shen, Xingcai Liu, Hao Fu, Wenbo Yang, Jinyuan Zhao, Jian Wang, Yaping Du, Chunjie Ma
Summary: Rare earth-containing corrosion inhibitors were successfully synthesized and added into epoxy coatings for the anti-corrosion of steel materials. The results showed that the coatings with rare earth elements had better anti-corrosion performance, and this difference in performance could be explained by the inherent properties of rare earth elements.
PROGRESS IN ORGANIC COATINGS
(2024)