Article
Materials Science, Multidisciplinary
Chenxin Nie, Yongqian Shi, Songqiong Jiang, Hengrui Wang, Miao Liu, Ruizhe Huang, Yuezhan Feng, Libi Fu, Fuqiang Yang
Summary: Flexible cotton/thermoplastic polyurethane (TPU) hierarchical composites with excellent flame retardancy and mechanical properties were successfully developed. The cotton internal layer was obtained through multiple dip coating, while the TPU/ammonium polyphosphate (APP) composites served as the external layers. By adjusting the dip coating circle, the flame retardant and mechanical properties of the composites were effectively tuned. This study provides a promising approach for the design of flexible and multifunctional cotton/polymer composites.
ACS APPLIED POLYMER MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Jiaxin Sun, Lianxu Shi, Tingting Song, Caiying Sun
Summary: A novel phosphate-based flame retardant, SPMA, was synthesized and compounded with ammonium polyphosphate to improve the flame retardant properties of cotton fabrics. The results showed a significant increase in flame retardancy and the formation of a stable network structure on the char surface of flame retardant cotton fabrics.
ADVANCED COMPOSITES AND HYBRID MATERIALS
(2021)
Article
Materials Science, Paper & Wood
Shuo Diao, Yan Yang, Qian Tang, Yonghua Lu, Yanfeng Lu, Guangxian Zhang
Summary: This paper improves the traditional flame retardant finishing technology by grafting the pre-polymerized phosphonium compound onto cotton fabrics, eliminating the need for ammonia fumigation and reducing environmental pollution. The results show that the improved finishing technology can provide cotton fabrics with excellent flame retardance and durability.
Article
Engineering, Environmental
Lei Liu, Menghe Zhu, Zhewen Ma, Xiaodong Xu, Seyed Mohesen Seraji, Bin Yu, Ziqi Sun, Hao Wang, Pingan Song
Summary: The ongoing Covid-19 pandemic has highlighted the urgent need for antibacterial properties in commercially important polymers, such as Epoxy resins, which face challenges of flammability and poor impact toughness. This study presents a reactive multifunctional heterostructure, CuP-MXene, achieving high antibacterial efficiency, flame retardancy, and improved mechanical properties in EP nanocomposites. The synergistic effects between CuP and MXene provide a general strategy for designing multifunctional nanoadditives and advanced polymers with more industrial applications for EP.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Applied
Shupin Chen, Hongqiang Li, Xuejun Lai, Shifeng Zhang, Xingrong Zeng
Summary: The authors presented a new strategy for preparing superhydrophobic and flame-retardant cotton fabric by coating multiple layers on the fabric surface. The resulting fabric exhibited high water contact angle, anti-adhesion properties, self-cleaning capabilities, and efficient oil-water separation, as well as excellent flame retardancy.
PROGRESS IN ORGANIC COATINGS
(2021)
Article
Engineering, Environmental
Wenhui Rao, Junjiao Shi, Chuanbai Yu, Hai-Bo Zhao, Yu-Zhong Wang
Summary: The study introduces a highly efficient, environmentally friendly flame-retardant coating method without halogen and formaldehyde, which achieves high transparency and colorlessness at low loading and demonstrates high flame-retardant efficiency on cotton fabrics.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Materials Science, Paper & Wood
Xue-Lin Li, Xiao-Hui Shi, Ming-Jun Chen, Qing-Yun Liu, Ying-Ming Li, Zhi Li, Yan-Hao Huang, De-Yi Wang
Summary: This study developed an eco-friendly coating process to enhance the flame retardancy of cotton fabrics. The coating formed a durable flame retardant layer on the fiber surface and effectively reduced the heat release of the fabrics. Additionally, the treated fabrics exhibited excellent washing durability.
Article
Materials Science, Paper & Wood
Yanan Ma, Xiaolei Luo, Lin Liu, Cong Zhang, Xiaolei Shang, Juming Yao
Summary: By feasible chemical grafting of phytic acid (PA), eco-friendly and efficient fireproof cotton fabrics were prepared, exhibiting excellent thermal stability and flame resistance with outstanding washing durability. Tests showed self-extinguishing behavior and reduced smoke production of the treated cotton fabrics, indicating significantly improved flame retardancy.
Article
Materials Science, Multidisciplinary
Lei Liu, Zhewen Ma, Menghe Zhu, Lina Liu, Jinfeng Dai, Yongqian Shi, Jiefeng Gao, Toan Dinh, Thanh Nguyen, Long-Cheng Tang, Pingan Song
Summary: In this study, a superhydrophobic fireproof cotton fabric was successfully prepared via sequential layer-by-layer deposition and hydrophobic treatment, which exhibited excellent fire resistance and multifunctional properties, showing great potential for practical applications.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Materials Science, Paper & Wood
Pratik S. Dhumal, Madhuri A. Bhakare, Kshama D. Lokhande, Mahesh P. Bondarde, Surajit Some
Summary: An efficient flame retardant composite has been prepared using biowaste derived phosphorous groups decorated graphene supported nanomaterial, which can be used in various applications in sustainable chemistry.
Article
Materials Science, Paper & Wood
Wenhui Rao, Junjiao Shi, Meini Yang, Feihao Yang, Tao Wu, Chuanbai Yu, Ming-Jun Chen, Hai-Bo Zhao
Summary: This study presents a facile method for fabricating an environmentally friendly hydrophobic and fire-safe coating on cotton fabric. The coating, based on biobased phytic acid, tannic acid, and vinyl trimethoxysilane, forms a phosphorus/nitrogen/silicon-containing hybrid flame-retardant system. The coating enables self-extinguishing behavior, high limiting oxygen index, reduced heat and smoke release, and hydrophobicity with a water contact angle of 117.2 degrees.
Article
Agricultural Engineering
Jinfeng Li, Wei Jiang
Summary: A novel flame retardant containing high amounts of P and N elements was designed and grafted onto cotton fabric via P-O-C covalent bonds, showing improved flame retardancy and durability. The treated cotton exhibited lower peak heat release rate, total heat release, and initial decomposition temperatures, as well as increased carbon residue during combustion, indicating the formation of an expanded char layer. Various spectroscopic techniques confirmed the flame retardant mechanism, and the mechanical properties of the treated cotton remained suitable for use after treatment.
INDUSTRIAL CROPS AND PRODUCTS
(2021)
Article
Agricultural Engineering
Jiang Tu, Tao Mao, Suhui Xie, Jinping Guan, Hang Xiao, Peng Wang
Summary: A N-heterocyclic compound with ammonium phosphate ester groups was used as a cross-linking agent to enhance the flame-retardant and anti-wrinkle properties of cotton fabric. The flame retardancy of treated fabric was restored through a facile ion exchange strategy.
INDUSTRIAL CROPS AND PRODUCTS
(2022)
Article
Materials Science, Paper & Wood
Xiaowei Su, Wei Tan, Xiaohui Liu, Yuanlin Ren, Ying Sun
Summary: In order to improve the flame retardant and antibacterial properties of lyocell fabric, thiamine pyrophosphate (TPP) was chosen as a water-soluble vitamin derivative for fabric modification. The treated lyocell fabric exhibited reduced combustion in vertical burning test and significantly improved thermal stability and char-forming ability. The addition of TPP increased the char residue of the fabric and decreased the total heat release and peak heat release rate. The treated fabric also showed excellent durable flame retardancy and good antibacterial performance against E. coli and S. aureus.
Article
Chemistry, Physical
Liangyuan Qi, Shuilai Qiu, Jianchao Xi, Bin Yu, Yuan Hu, Weiyi Xing
Summary: A super-hydrophobic flame retardant coating for cotton fabric was developed, showing excellent flame retardancy, abrasion resistance, anti-washing, and self-cleaning properties. The coated cotton fabric also exhibited outstanding char-forming ability, contributing to superior flame retardancy.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Materials Science, Ceramics
Arijit Jana, Manojit Das, Shivam Tiwari, Shaik Salam Basha, Abhay Raj Singh Gautam, Sushanta Kumar Panda, Rahul Mitra, Shobhit Kumar, Renjith Devasia, Chandra Sekhar Tiwary
Summary: Environment-friendly water-based SiC ceramic inks were developed using different size SiC powders, and the relation between SiC particle size and rheological properties was established. The additive manufacturing conditions for SiC were optimized, achieving a compressive strength of -1.21 MPa. The optimum sintering temperature (1400 degrees C) resulted in improved compressive strength of -80 MPa with a relative density of -81%. The current printing method can produce complex ceramic components that can be utilized for manufacturing complex aerospace components.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Composites
Manojit Das, Rajat Mishra, Palash Das, Sunil Kumar Kashyap, Sushanta Kumar Panda, Rahul Mitra, Peter Samora Owuor, Amit Arora, Chandra Sekhar Tiwary
Summary: In a 3D printed polymer composite, the orientation of reinforcement, distribution, and porosity greatly affect the mechanical properties. By adjusting printing conditions such as nozzle diameter and flow rates, we demonstrate precise control over the reinforcement orientation. Experimental observations show a direct correlation between reinforcement directionality, porosity, and mechanical properties with printing conditions.
COMPOSITES SCIENCE AND TECHNOLOGY
(2023)
Article
Chemistry, Physical
Partha Kumbhakar, Ashim Pramanik, Shashank Shekhar Mishra, Raphael Tromer, Krishanu Biswas, Arup Dasgupta, Douglas S. Galvao, Chandra Sekhar Tiwary
Summary: Various strategies have been developed to trap photons inside living cells for high-contrast imaging. One such strategy is the use of 3D-printed biomimetic architecture with localized surface plasmon resonance (LSPR) promoter. This study compares optical confinement in natural and 3D-printed photonic architectures and demonstrates that the 3D-printed fish scale with atomically thin quasicrystals (QCs) outperforms other 2D materials in terms of image contrast.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Physics, Condensed Matter
J. M. De Sousa, L. D. Machado, C. F. Woellner, M. Medina, P. A. S. Autreto, D. S. Galvao
Summary: The mechanical response and fracture dynamics of BNNT-peapods under ultrasonic velocity impacts were investigated. Reactive molecular dynamics simulations were carried out, considering horizontal and vertical shootings. Tube bending, tube fracture, and C-60 ejection were observed depending on the velocity values, with the nanotube unzipping for horizontal impacts at certain speeds.
JOURNAL OF PHYSICS-CONDENSED MATTER
(2023)
Article
Materials Science, Multidisciplinary
Varinder Pal, Bhupendra Kumar, Min-Kyu Paek, Chandra Sekhar Tiwary, Manas Paliwal
Summary: Tellurium-based alloys, such as Bi2Te3 and Ga2Te3 in the Bi-Ga-Te system, show promising thermoelectric behavior, but there is limited study on microstructure design in this system. Using a thermodynamic database, various alloys were developed and characterized. The results showed varying phase fractions of Bi, beta, Bi2Te3, Ga2Te3, and Te, which will help determine the thermoelectric operational temperature of these alloys.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Nanoscience & Nanotechnology
Manojit Das, Arijit Jana, Rajat Mishra, Swapan Maity, Pralay Maiti, Sushanta Kumar Panda, Rahul Mitra, Amit Arora, Peter Samora Owuor, Chandra Sekhar Tiwary
Summary: Direct ink writing (DIW) additive manufacturing is a versatile 3D printing technique that can print a variety of materials with well-engineered ink. DIW has great potential in tissue engineering for repairing and regenerating deformed or missing organs or tissues.
ACS APPLIED BIO MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Partha Kumbhakar, Rushikesh S. Ambekar, Arko Parui, Ajit K. Roy, Debmalya Roy, Abhishek K. Singh, Chandra S. Tiwary
Summary: This work demonstrates the electrical-mechanical coupling phenomena by decorating piezoresponsive atomically thin ZnO nanosheets on a polymer surface using additive manufacturing technology. The output voltage response of the 3D-printed architecture can be regulated by external mechanical pressures. Energy generation is achieved by placing the 3D-printed fabric on a padded shoulder strap, utilizing the mechanical strength and flexibility of the coated structure. The improved charge transfer at the interface enhances the output performance of the 3D-printed fabric.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Physics, Applied
Sayan Prodhan, Kamlesh Kumar Chauhan, Tara Singha, Manobina Karmakar, Nikhilesh Maity, Renjith Nadarajan, Partha Kumbhakar, Chandra Sekhar Tiwary, Abhishek Kumar Singh, Manikoth M. Shaijumon, Prasanta Kumar Datta
Summary: Semiconductors based on group-VI 2D materials, such as bilayer selenium (Se), show potential for optoelectronic applications. This study investigates the carrier dynamics of bilayer 2D Se in one-photon and multi-photon absorption regimes. The results show that the carrier lifetime can be used to predict the photo-responsivity of 2D Se photo-detectors operating in the one-photon-absorption regime. Additionally, bilayer 2D Se exhibits a significant two-photon absorption cross section and can function as a sub-bandgap photo-detector. The study also reveals the dominant carrier recombination process in different absorption regimes, and suggests the possibility of using 2D Se as a saturable absorber material for passive Q-switching.
APPLIED PHYSICS LETTERS
(2023)
Article
Chemistry, Physical
Preeti Lata Mahapatra, Caique Campos de Oliveira, P. R. Sreeram, Sivaraj Kanneth Sivaraman, Suman Sarkar, Gelu Costin, Basudev Lahiri, Pedro Alves da Silva Autreto, Chandra Sekhar Tiwary
Summary: This study demonstrates the gas sensing properties of 2D rhodonite silicate extracted from natural mineral ore for hydrogen sulfide. The material shows high sensitivity and selectivity, and the sensors developed using it are stable. The findings suggest the potential use of environmentally stable natural silicate 2D materials as efficient replacements for conventional metal oxides for ultrasensitive sensors.
CHEMISTRY OF MATERIALS
(2023)
Article
Engineering, Electrical & Electronic
Rohit Jain, Sahil Sharma, Jithin Sai Sandra, Martha Y. Villagran, Jarek Wosik, Venkat Selvamanickam
Summary: In this study, superconducting REBa2Cu3O7-x (REBCO) thin films were fabricated using metal organic chemical vapor deposition (MOCVD) on flexible, yttria stabilized zirconia (YSZ) substrates. The films demonstrated low surface resistance and high critical current density. The MOCVD process parameters were optimized, and the crystallographic texture and composition of the films were characterized. The high-quality REBCO films on flexible, dielectric substrates have a wide range of potential applications.
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
(2023)
Article
Engineering, Electrical & Electronic
M. Suarez-Villagran, G. Majkic, J. Wosik, V. Selvamanickam
Summary: In this study, we used rf/microwave standing waves in REBCO tapes to develop a nondestructive technique for quench detection. REBCO tape can be considered as a transmission line for electromagnetic waves at high frequencies or as a capacitor at low frequencies. The standing waves in the transmission line can be excited either capacitively or inductively, which provides flexibility for circuit optimization. The standing waves are sensitive to any changes in uniformity or material properties, and upon quench initiation, the standing waves are disturbed and can be sensed by a network analyzer.
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
(2023)
Article
Materials Science, Multidisciplinary
Abhinav Prakash, Nirmal Kumar Katiyar, Martha Y. Suarez-Villagran, John H. Miller Jr, Leonardo D. Machado, C. S. Tiwary, Krishanu Biswas, Kamanio Chattopadhyay
Summary: Ionic salts, including lithium chloride (LiCl), have great potential for various applications such as electrolytes and desiccants. However, the properties of nanocrystalline LiCl have not been extensively explored due to the difficulty in preparing and stabilizing nanoparticles. In this study, nanocrystalline LiCl was successfully prepared using cryomilling, and it exhibited a significantly higher water uptake capability compared to bulk LiCl crystal. Molecular Dynamics simulations further confirmed the enhanced reactivity of smaller crystallites. The findings shed light on the unique characteristics of nanocrystalline LiCl and its potential applications in energy-related fields.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Nanoscience & Nanotechnology
Anjali Jayakumar, Rushikesh S. Ambekar, Preeti Lata Mahapatra, Appu Kumar Singh, Tarun Kumar Kundu, P. R. Sreeram, Rahul R. Nair, Chandra Sekhar Tiwary
Summary: This study investigates the enhancement of mechanical, thermal, and flexoelectric properties of 3D-printed carboxymethyl cellulose (CMC) by adding mechanically exfoliated hexagonal boron nitride (hBN). hBN acts as a rheology modifier and 2% hBN-reinforced CMC shows the highest apparent viscosity while 0.5% hBN/CMC film exhibits the highest mechanical and thermal stability. A flexoelectric energy harvester is fabricated using 3D-printed hBN/CMC composites.
ACS APPLIED NANO MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Astha Dixit, Manojit Das, Himanshu Singh, Sushanta Kumar Panda, Nicola M. Pugno, Nirmal Kumar Katiyar, Chandra Sekhar Tiwary
Summary: This study employed fused deposition modeling (FDM) printers to model and fabricate octopus-inspired suction cups. The compressive test proved that the inside cavity plays a significant role in enhancing strength due to stress distribution and is represented as a robust biomimetic design. The findings demonstrate that the naturally evolved octopus structure exhibits superior compressive strength, enhanced energy absorption, and the ability to generate negative pressure, rendering it highly suitable for gripping, suction, and shock-absorption applications.
ACS APPLIED POLYMER MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
P. L. Mahapatra, A. K. Singh, R. Tromer, P. Kumbhakar, S. K. Sinha, B. Lahiri, T. K. Kundu, D. S. Galvao, C. S. Tiwary
Summary: In this study, a 2D spinel MgCr2O4 with high surface activity was synthesized by a liquid-phase exfoliation process. The fabricated flexoelectric device showed an electrical response up to -3V upon pressing and releasing the cell. The energy harvesting properties of 2D MgCr2O4 were explored by combining bending with other external energy sources.
MATERIALS TODAY NANO
(2023)
