Article
Polymer Science
Yong-Min Lee, Kwan-Woo Kim, Byung-Joo Kim
Summary: The demand for carbon fiber-reinforced thermosetting plastics is increasing globally, leading to an increase in waste from CFRPs. This study investigated the effect of steam and air pyrolysis on the mechanical properties of recycled carbon fiber from CFRPs. Steam pyrolysis resulted in resin degradation and oxidation of the recycled carbon fiber, leading to a decrease in tensile strength but an increase in interfacial shear strength.
Article
Chemistry, Multidisciplinary
Yu-xuan Xu, Xing-guo Zhao, Xiang Dong, Guang-long Dai
Summary: Silane agents were used to synthesize organic-modified nickel phyllosilicates (NiPS), which were then introduced into epoxy resin (EP) to form composites. The effects of these organic-modified NiPS on the curing behavior and flammability of epoxy composites were carefully investigated. The addition of NiPS resulted in a narrower curing temperature range and decreased activation energy, indicating a lowered energetic barrier. The presence of these organic-modified NiPS also enhanced the self-extinguishing ability and limited oxygen index of the composites, and a solid phase flame retardant mechanism was proposed.
Article
Polymer Science
Kaihua Chen, Xiaobao Zhu, Guozhen Zhao, Jing Chen, Shenghui Guo
Summary: Investigating the curing kinetics of a fiber prepreg system is essential for controlling the curing process of prepreg laminate. In this study, a carbon fiber/epoxy prepreg system cured with dicyandiamide (DICY) was investigated using non-isothermal differential scanning calorimetry (DSC). The glass transition temperature of the uncured prepreg and fully cured sample were determined to be 7.6°C and 106.2°C, respectively. The activation energy (E-a) of the prepreg system was evaluated using Kissinger and Ozawa methods, and the Friedman method was employed to analyze the evolution of E-a with curing degree. The Sestak-Berggren model accurately described the curing kinetics of the prepreg system, with a preexponential factor of 6.0 x 10(8) min(-1) and an overall reaction order of approximately 2.5. The prediction curves based on the Friedman method and autocatalytic model showed good agreement with experimental data.
INTERNATIONAL JOURNAL OF POLYMER SCIENCE
(2023)
Article
Polymer Science
Belayne Zanini Marchi, Pedro Henrique Poubel Mendonca da Silveira, Wendell Bruno Almeida Bezerra, Lucio Fabio Cassiano Nascimento, Felipe Perisse Duarte Lopes, Veronica Scarpini Candido, Alisson Clay Rios da Silva, Sergio Neves Monteiro
Summary: This study investigated the ubim fiber as a possible reinforcement in epoxy composites. The thermal properties of the ubim fiber were characterized by thermogravimetric analysis and differential scanning calorimetry, and its chemical structure was elucidated by Fourier transform infrared spectroscopy. The results showed that the composites exhibited better thermal stability and higher energy absorption, indicating the potential of ubim fiber-reinforced composites in engineering applications.
Article
Engineering, Environmental
Unhan Lee, Eunseo Heo, Thanh-Hai Le, Haney Lee, Semin Kim, Sanghyuck Lee, Hyemi Jo, Hyeonseok Yoon
Summary: The study demonstrates that pristine CDs from amine-containing precursors can be used for curing epoxy monomers. The CDs showed good compatibility with the epoxy matrix and retained over 80% PL intensity even after 8 weeks of storage. The combination of CD/epoxy resin has potential for anti-forgery protection and can be extended to other resin applications.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Materials Science, Composites
Afrooz Molaei, Ali Jannesari
Summary: This study investigated the synergistic effects of hybrid GnP/MWCNT nanofillers at various loadings on the curing kinetics of the EP/VE IPN system. The results revealed a complex curing behavior involving three stages and showed that the addition of nanoparticles significantly decreased the activation energy values of the ring opening reaction and esterification reaction.
POLYMER COMPOSITES
(2023)
Article
Polymer Science
Bungo Ochiai, Katsutaka Soegawa
Summary: This paper reports on the curing behavior of epoxy glycidates bearing adjacent ester groups, showing that they can be cured with diethylenetriamine under mild conditions and exhibit high adhesiveness. The curing starts at a lower temperature and has a slower rate, but the cured products demonstrate a significantly higher adhesive strength.
Article
Engineering, Electrical & Electronic
Jiaming Luo, Lei Zhang, Wenjie Sun, Jiale Mao, Yiting Zheng, Shuang Wang, Ziqi Zhang, Yingxin Chen, Yonghong Cheng
Summary: Imidazoles are commonly used curing agents for crosslinked epoxy materials in the electrical and electronic fields. This study found that imidazoles containing pyrrole-type nitrogen achieved higher breakdown strength and lower dielectric loss compared to those containing only pyridine-type nitrogen. Additionally, the epoxy cured with imidazoles containing pyrrole-type nitrogen exhibited a higher glass transition temperature and showed improved stability in electrical properties at high concentrations.
Article
Chemistry, Physical
Guler Bengusu Tezel, Anubhav Sarmah, Suchi Desai, Aniruddh Vashisth, Micah J. Green
Summary: The isothermal curing kinetics of carbon nanotube loaded epoxy were investigated using rheometry and DSC, showing that the Kamal-Sourour kinetic model described the curing process well. In addition, RF electromagnetic fields were used to aid the curing process, which was found to be faster and more volumetric compared to traditional methods such as rheometry or DSC.
Article
Materials Science, Composites
Ting Yui Wong, Tao Yu, Fangxin Zou
Summary: Non-monotonic electrical resistance changes have been observed in multi-walled carbon nanotube (MWNT)/epoxy nanocomposites under tensile loading, but the mechanism is not fully understood. This study evaluates the impact of curing condition on the piezoresistivity of MWNT/epoxy nanocomposites, and suggests that a higher curing temperature can enhance the monotony of the piezoresistivity. The results indicate that the molecular structure of the polymer matrix contributes to the non-monotonic piezoresistivity of CNT/epoxy nanocomposites.
COMPOSITES COMMUNICATIONS
(2023)
Article
Forestry
Emre Birinci, Alperen Kaymakci
Summary: The aim of this study is to investigate the effects of processing technology, nanomaterials, and coupling agents ratio on the properties of wood-polymer nanocomposites. Extrusion and dry blending methods were used to prepare samples with wood flour, MAPP, ZnO nanoparticles, and polypropylene. The mechanical properties of the nanocomposites were significantly improved with the addition of ZnO and MAPP. The extrusion method resulted in better mechanical results due to the more homogeneous structure of the nanocomposites. The thermal stability of the nanocomposites improved with the addition of ZnO and MAPP. The storage and loss modulus values indicate that the processing technology is a key factor in the resistance of the nanocomposite materials.
Article
Polymer Science
Gulsym Burkeyeva, Anna Kovaleva, Yerkeblan Tazhbayev, Zhansaya Ibrayeva, Lyazzat Zhaparova
Summary: This work demonstrates the potential for preparing copolymers with a three-dimensional crosslinked structure based on polypropylene glycol fumarate and acrylic acid. The curing process and thermal behavior of the copolymers were studied using DSC and TGA methods.
Article
Materials Science, Composites
Thanikodi Sathish, Praveenkumara Jagadeesh, Sanjay Mavinkere Rangappa, Suchart Siengchin
Summary: This study fabricates hybrid composites reinforced with jute, bamboo, and coir fibers and analyzes their mechanical, thermal, and morphological properties. The results show that the composite JC8, with 21% jute, 1.5% coir, and 7.5% bamboo, exhibits the highest tensile and flexural strengths, thermal stability, and better surface morphology among other hybrid composites.
POLYMER COMPOSITES
(2022)
Article
Materials Science, Composites
Thanikodi Sathish, Praveenkumara Jagadeesh, Sanjay Mavinkere Rangappa, Suchart Siengchin
Summary: In this research study, different combinations of coir, jute, and bamboo reinforced epoxy composites were fabricated and their mechanical properties, thermal stability, and thermal conductivity were analyzed. The results showed that hybrid composites with a combination of fibers exhibited improved mechanical and thermal properties. The hybrid composite with the maximum amount of jute fibers reinforcement with bamboo fiber demonstrated the highest flexural and impact strengths.
POLYMER COMPOSITES
(2022)
Article
Chemistry, Multidisciplinary
Rui Cai, Jinlong Zhao, Naixin Lv, Anqing Fu, Chengxian Yin, Chengjun Song, Min Chao
Summary: In this study, the curing kinetics and glass transition temperature (T-g) of MXene/phenolic epoxy composites were systematically investigated using experimental characterization, mathematical modeling, and molecular dynamics simulations. The addition of MXene accelerated the curing process and increased the T-g. The molecular dynamics simulations confirmed these results and analyzed the microstructural features.
Article
Chemistry, Organic
Ashmita Singh, Anudeep Kumar Narula
Summary: The one-pot two-step oxidative process allows for the transformation of aldehydes and amines into amides using tert-butyl hydroperoxide, copper(I) iodide, and an N-hetero-cyclic carbene. This additive-free method is simple, practical, and cost-effective, making use of readily available reagents.
Article
Chemistry, Multidisciplinary
Chandra S. Azad, Pratibha Shukla, Mark A. Olson, Anudeep K. Narula
Summary: A catalytic two-component three-centered (2C3C) Ugi-type reaction was developed for the synthesis of L-1-deoxynojirimycin (DNJ) isomers using a chiron approach, with high yields achieved for both L-allo-DNJ and L-altro-DNJ.
CHINESE JOURNAL OF CHEMISTRY
(2021)
Article
Chemistry, Medicinal
Pratibha Shukla, Deepa Deswal, Mansi Pandit, Narayanan Latha, Divyank Mahajan, Tapasya Srivastava, Anudeep Kumar Narula
Summary: New imidazo[1,2-a]pyridine candidates were designed by synthesizing derivatives using 2-amino pyridine, TOSMIC, and various aldehydes, showing antioxidant and antifungal potential. The highest antifungal inhibition was observed in compound 12 against Aspergillus fumigatus and Candida albicans, with confocal images and UPLC analysis revealing the antifungal mechanism. In silico studies confirmed the interaction of the synthesized compounds with the active site of the target enzyme, while ADME analysis indicated drug-likeliness of the compounds.
DRUG DEVELOPMENT RESEARCH
(2022)
Review
Business
Ritu Jain, Kokil Jain, Abhishek Behl, Vijay Pereira, Manlio Del Giudice, Demetris Vrontis
Summary: This study uses a systematic literature review method to identify the main enablers and inhibitors in adopting the collaborative fashion consumption renting mode. The findings show the evolving nature of fashion renting, with North America contributing the most to scientific publications in this field. The study also uncovers motives, barriers, personality traits, and the role of culture in consumer adoption of fashion renting, as well as challenges and opportunities in the fashion rental business. Managerial implications and potential research directions are discussed.
JOURNAL OF BUSINESS RESEARCH
(2022)
Article
Biotechnology & Applied Microbiology
Shivendra Dutt Shukla, Geeta Gupta, Razia Khatoon, Ritu Jain, Ankita Gupta
Summary: Multidrug resistant Pseudomonas aeruginosa is a emerging public health problem globally and still a major cause for nosocomial infection. The present study aimed to evaluate the production of biofilm and beta-lactamases in multi drug resistant Pseudomonas aeruginosa isolated from ICU patients.
JOURNAL OF PURE AND APPLIED MICROBIOLOGY
(2022)
Article
Agronomy
Ritu Jain, Ram Swaroop Bana, Prabhat Kumar, Babita Singh, Vinod K. Sharma, Vanlalruati, Markandey Singh, Ajai K. Tiwari, Samarth Godara
Summary: The integrated application of water soluble fertilizer and phosphorus solubilizing biofertilizer significantly improved the growth performance and soil fertility of high-value ornamental plant Syngonium. Different nutrient management techniques had varying effects on plant growth performance.
CANADIAN JOURNAL OF PLANT SCIENCE
(2022)
Article
Biotechnology & Applied Microbiology
Rajinder Kaur, Ritu Jain, Niharika Budholiya, Anurag S. Rathore
Summary: The study investigates the impact of long term culturing on cell morphology and altered cellular functions, which may lead to phenotypic drift and affect product yield and quality. The study highlights the use of cellular and analytical assay toolbox to define cell line stability and optimize culture performance and product quality.
BIOTECHNOLOGY LETTERS
(2023)
Review
Pharmacology & Pharmacy
Ritu Jain, Janakiraman Subramanian, Anurag S. Rathore
Summary: The drug approval process involves extensive and expensive preclinical and clinical examination. Most drugs fail in late-stage clinical trials due to inability to achieve primary endpoints or intolerable adverse effects. Only one-tenth of the drugs that enter clinical trials progress to FDA regulatory submission.
EXPERT OPINION ON PHARMACOTHERAPY
(2023)
Article
Energy & Fuels
Ritu Jain, Vasundhara Mahajan
Summary: Due to global warming and depleting fossil fuels, mankind has shifted towards renewable energy sources. This study proposes a novel sensitivity index, nodal price of energy index (NPEI), to determine the optimal placement of renewable energy sources (RES). The study focuses on optimal scheduling of disparate energy sources and incorporates pumped storage plant (PSP) based energy storage devices. The objective is to minimize the total generation cost and analyze the impact of RES and PSP on system reliability. The study is performed on IEEE 30 bus system.
SMART GRIDS AND SUSTAINABLE ENERGY
(2023)
Article
Business
Ritu Jain, Gurinder Singh, Sheetal Jain, Kokil Jain
Summary: Recently, consumers have become more aware of the negative impact of excessive fashion consumption on the environment, leading to a shift towards alternative and sustainable modes of fashion consumption. This study focuses on the adoption of fashion rentals by Generation X, highlighting the barriers and motivations for their engagement. The findings suggest the need for transparency, long-term subscriptions, and personalization in order to promote fashion rental among this generation.
JOURNAL OF CONSUMER BEHAVIOUR
(2023)
Article
Multidisciplinary Sciences
Swechchha Gupta, Ritu Jain, Nidhi Bhargava
Summary: The dielectric properties of agricultural products and their interaction with electromagnetic energy during microwave heating were studied. The dielectric properties of food material are influenced by factors such as frequency, grain size, moisture, temperature, composition, and density. The study found a correlation between the dielectric properties of almonds and their food nutrients.
JOURNAL OF RAJASTHAN ACADEMY OF PHYSICAL SCIENCES
(2022)
Article
Medical Laboratory Technology
Ritu Jain, Vikas Saini, Ashutosh Rawat, Dakshina Bisht
Summary: This study aimed to investigate the predictive value of pro-inflammatory cytokines on the overall prognosis of COVID-19 patients. The results showed that there was a significant difference in ferritin levels prior to the terminal event between survivors and non-survivors, while the CRP levels at admission did not show a significant association with survival.
Article
Medical Laboratory Technology
Anchal Mishra, Ritu Jain, Ashutosh Rawat, Vikas Saini, Dakshina Bisht
Summary: This article discusses the harm caused by hospital-acquired infections and the need for excellent disinfection and sterilization technologies. It focuses on the organization, workload, and quality control practices of the central sterile supply department (CSSD) and highlights the importance of proper sterilization methods in reducing hospital-acquired infections.
Article
Energy & Fuels
Ritu Jain, Vasundhara Mahajan
Summary: This paper forecasts load using the WT-ARIMA method, which fits the time series data better than the ARIMA model. It also explores the impact of load forecasting on the energy market and the effect of intermittent nature of renewable energy sources on system parameters.
RENEWABLE ENERGY FOCUS
(2022)
Proceedings Paper
Materials Science, Multidisciplinary
Rahul Kumar, Ankit Jain, Shri Krishna Mishra, Manish Joshi, Kalyan Singh, Ritu Jain
Summary: This study compares the structural characteristics of AlSiC, aluminum alloy graphite, and Al-SIC composite materials to improve the efficiency and accuracy of CNC machine beds. The results show that the Al-SiC composite material has a higher natural frequency, reducing vibrative reaction and providing structural strength.
MATERIALS TODAY-PROCEEDINGS
(2022)
