Article
Nanoscience & Nanotechnology
Md Nuruddin, Reaz A. Chowdhury, Ryan Szeto, John A. Howarter, Kendra A. Erk, Caroline R. Szczepanski, Jeffrey P. Youngblood
Summary: The study found that CNC-PVA films exhibit excellent barrier performance, even higher than traditional polymers and high barrier ethylene-vinyl alcohol copolymer films. In addition, the moisture sensitivity of the films decreased with the addition of PVA.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Nanoscience & Nanotechnology
Maximilian Roehrl, Lukas K. S. Federer, Renee L. Timmins, Sabine Rosenfeldt, Theresa Doerres, Christoph Habel, Josef Breu
Summary: By fabricating crystalline and disordered nanocomposite structures at different drying temperatures, PVOH/Hec composite materials exhibit efficient barrier properties at high humidity levels. Oxygen permeability of the crystalline morphology is significantly lower than that of the disordered nanocomposite at elevated humidity.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Food Science & Technology
Shuangyi Li, Jingwei Wu, Qun Tang, Danfeng He, Heping Li, Daijiang Peng, Zhiming Zou
Summary: New Co-based MOF (Co-ATMP) nanocrystals with ammonia-sensitivity function were prepared and blended with polyvinyl alcohol (PVA) to construct smart active packaging materials. The PVA/Co-ATMP blend films showed high antibacterial activity, ammonia-sensitivity, and color stability, making them potential for utilization in smart active packaging area.
LWT-FOOD SCIENCE AND TECHNOLOGY
(2023)
Article
Food Science & Technology
Aswathy Jayakumar, Sabarish Radoor, Indu C. Nair, Suchart Siengchin, Jyotishkumar Parameswaranpillai, E. K. Radhakrishnan
Summary: The study found that PVOH nanocomposite film incorporated with lipopeptides and clay nanoparticles exhibited enhanced mechanical and barrier properties, inhibiting the growth of foodborne pathogens and spoilage causing organisms. Consequently, these engineered films have potential applications as active food packaging wraps for protecting and preserving food products.
FOOD PACKAGING AND SHELF LIFE
(2021)
Article
Biochemistry & Molecular Biology
Huifang Wang, Tianren Xue, Shuo Wang, Xiaoli Jia, Shenghui Cao, Baolong Niu, Ruijie Guo, Hong Yan
Summary: In this study, biodegradable composite films with improved film-forming property and antibacterial property were successfully fabricated by modifying xylan and encapsulating ZnO nanoparticles. The addition of nano ZnO@Xylan significantly reduced water vapor permeability, increased UV shielding performance, and achieved a high bacteriostasis rate. The preservation time of cherry tomatoes covered with the composite films was extended to at least 21 days.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2022)
Article
Engineering, Environmental
Artjima Ounkaew, Noppadon Janaum, Pornnapa Kasemsiri, Manunya Okhawilai, Salim Hiziroglu, Prinya Chindaprasirt
Summary: This study successfully developed bioactive packaging films using a green process, incorporating citric acid to produce smaller nanoparticles and improved antimicrobial properties. The well-dispersed silver nanoparticles in the film exhibited enhanced mechanical properties, while the released silver ions in food simulants were below European Standard limits.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Food Science & Technology
Ahmed A. Oun, Gye Hwa Shin, Jong-Whan Rhim, Jun Tae Kim
Summary: This review paper summarizes the recent research on Polyvinyl alcohol (PVA) films blended with different polymers, reinforced with functional materials and supported with a combination of biopolymer-functional materials. The effects of these factors on the properties of PVA-based films are discussed, including transparency, UV protection, mechanical properties, thermal stability, antibacterial activity, antioxidant activity, and pH-indicator properties.
FOOD PACKAGING AND SHELF LIFE
(2022)
Article
Chemistry, Multidisciplinary
Jie Xia, Xuepei Wang, Xiang Wang, Krisztina Majer-Baranyi, Xiaoshuan Zhang
Summary: This paper presents a hysteresis dynamic modeling method for flexible humidity sensors, which are fabricated on flexible substrates with sensitive layer and electrode. The sensors show outstanding dynamic response ability and stability, and the hysteresis mechanism is theoretically analyzed. The findings provide a path for optimizing the performance of flexible humidity sensors.
Article
Biochemistry & Molecular Biology
Jialin Liu, Jiayin Huang, Yubin Ying, Lingping Hu, Yaqin Hu
Summary: pH-sensitive and antibacterial films were developed based on chitosan/polyvinyl alcohol/nano-ZnO containing anthocyanins extracted from purple potato or roselle, showing distinguishable color changes in different pH buffer solutions and promising potential as active and smart packaging materials for applications in food industry.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2021)
Article
Engineering, Environmental
Bruna Rage Baldone Lara, Paulo Sergio de Andrade, Mario Guimaraes Junior, Marali Vilela Dias, Lizzy Ayra Pereira Alcantara
Summary: In response to the global proposal for environmental protection and the increasing demand for food packaging, blending whey protein with polyvinyl alcohol and adding colloidal nano-silica can create biodegradable packaging films with improved mechanical strength and water barrier properties suitable for food packaging applications.
JOURNAL OF POLYMERS AND THE ENVIRONMENT
(2021)
Article
Polymer Science
Stefan Schiessl, Esra Kucukpinar, Noemie Rivollier, Horst-Christian Langowski, Peter Eisner
Summary: In this study, two different coating techniques (slot-die and reverse gravure) were used on a roll-to-roll scale to apply barrier lacquers comprising polyvinyl alcohol and montmorillonite. By tailoring the barrier lacquer formulation, the orientation of the platelet-shaped montmorillonite particles can be achieved using both techniques. A low solid content of down to 3 wt% is preferable for the premetered slot-die coating, while a high solid content of up to 9 wt% is preferable for the self-metered reverse gravure coating.
Article
Materials Science, Paper & Wood
Yanping Wang, Xing Zhong, Wei Wang, Dan Yu
Summary: The study introduces a flexible, low-cost conductive electrode by using cellulose and polyvinyl alcohol as a substrate, assembling with conductive polymer polythiophene. The composite electrode shows good flexibility and stability, capable of clearly monitoring ECG signals.
Article
Chemistry, Physical
Saba Shariati, Masoumeh Mousavi, Albert Hung, Elham H. Fini
Summary: It has been found that adding polyphosphoric acid (PPA) to bitumen modified with Montmorillonite clay (MMT) can decrease swelling and increase resistance to moisture, improving pavement distress. PPA was shown to preferentially adsorb onto MMT, blocking water from entering and improving the stability of the modified bitumen.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Review
Construction & Building Technology
Alessandra Ranesi, M. Rosario Veiga, Paulina Faria
Summary: Understanding the relative humidity dependent properties and hygroscopic intrinsic characteristics is crucial for choosing the right plasters. This review examined test methods and data for over 200 mineral compositions and discussed the varying responses, gaps, and differences in common practices of plaster characterization in literature.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Engineering, Environmental
Eslem Kavas, Pinar Terzioglu, Yusuf Sicak
Summary: This study developed ecofriendly composite films using cassava starch and polyvinyl alcohol as the film-forming matrix, betanin and nano-calcium carbonate as the pH sensitive pigment and nanofiller. The properties of the films containing different amounts of natural additives were compared, including color, mechanical, thermal, structural, ammonia sensitivity, and bioactivity properties. The results demonstrate the convenience of the composite films for active and intelligent packaging applications.
JOURNAL OF POLYMERS AND THE ENVIRONMENT
(2023)
Article
Chemistry, Multidisciplinary
Kaixiang Du, Mingyuan Wang, Zhiping Liang, Quanjiang Lv, Haigang Hou, Shuangying Lei, Shahid Hussain, Guiwu Liu, Junlin Liu, Guanjun Qiao
Summary: This paper presents a strategy for synthesizing surface-passivated monocrystalline PNRs on a silicon substrate using space-confined chemical vapor transport. The growth mechanism of the PNRs is revealed, showing that P-4 molecules can break, restructure, and nucleate on the surface of the Au3SnP7 catalyst, preferentially growing along the zigzag direction to form PNRs. The growth of PNRs with structural integrity can be regulated by controlling the phosphorus molecule concentration and confined space.
CHEMICAL COMMUNICATIONS
(2023)
Article
Environmental Sciences
Jesse Nii Okai Amu-Darko, Shahid Hussain, Xiangzhao Zhang, Asma A. Alothman, Mohamed Ouladsmane, M. Tariq Nazir, Guanjun Qiao, Guiwu Liu
Summary: Through thermal treatment, a mixed heterostructures In2O3/ZnO hollow nanocages were prepared, which showed exceptional sensitivity and selectivity to hydrogen sulfide gas, greatly improving the gas sensing performance.
Article
Biochemistry & Molecular Biology
Abdul Karim Shah, Ghulam Taswar Shah, Aqeel Ahmed Shah, Yeung Ho Park, Ayaz Ali Shah, Mooseok Choi, Shoaib Ahmed, Syed Nizamuddin Shah Bukhari, Ali Dad Chandio, Muhammad Atta Mahar, Muhammad Ali Shar, Abdulaziz Alhazaa
Summary: Nickel-supported hierarchical zeolite catalysts were prepared through a desilication reassembly process and applied in one-pot menthol synthesis. The physicochemical and acidic properties of pure microporous ZSM-5/USY zeolites were significantly improved, resulting in outstanding catalytic activity and menthol selectivity for the Ni/HZ-0.5 M catalyst.
Article
Chemistry, Physical
Zia Ur Rehman, Mohsan Nawaz, Hameed Ullah, Imad Uddin, Salma Shad, Elsyed Eldin, Razan A. Alshgari, Aboud Ahmed Awadh Bahajjaj, Waqas Ul Arifeen, Muhammad Sufyan Javed
Summary: In this study, nickel nanoparticles (Ni-NPs) were synthesized using a unique approach called microemulsion. SEM, TEM, EDX, and XRD techniques were employed to investigate the morphology and structures of the synthesized material. The Ni-NPs exhibited superior electrical conductivity and interconnected nanostructures, facilitating the transfer of electrons from electroactive components and providing numerous channels for ion diffusion and additional active sites. As a positive electrode for supercapacitors (SC), Ni-NPs showed excellent charge storage capability, with a dominant capacitive charge storage of 72.4% at 10 mV/s and a maximum capacitance of 730 F/g at 1 A/g. Furthermore, the Ni-NP electrode retained 92.4% of its capacitance even after 5000 cycles, suggesting potential applications in the field of renewable energy. This study presents a new method for producing high-rate next-generation electrodes for supercapacitors.
Article
Chemistry, Multidisciplinary
Muhammad Sajjad, Abdul Jabbar Khan, Sayed M. Eldin, Asma A. Alothman, Mohamed Ouladsmane, Patrizia Bocchetta, Waqas Ul Arifeen, Muhammad Sufyan Javed, Zhiyu Mao
Summary: A new CuSe-TiO2-GO ternary nanocomposite was synthesized through a facile wet-chemical method, which achieved high capacitance and widened voltage range for hybrid supercapacitors, thereby increasing the specific energy to a maximum extent.
Article
Physics, Condensed Matter
Muhammad Umer Iqbal, Sumayya, Sajid Butt, Muhammad Umer Farooq, Shahid Hussain, Syed Irfan, Nazakat Ali, Muhammad Abdul Basit, Muhammad Aftab Akram, Muhammad Yasir, Ather Hassan
Summary: During the last decade, misfit layered calcium cobaltite (Ca3Co4O9) has been explored as a potential thermoelectric material. In this study, the thermoelectric properties of Ca3Co4O9 were improved by synthesizing composites with different wt.% of Cu. The composites were consolidated into bulk ceramics and their structure was analyzed, revealing a multiphase system. The sample containing 5% Cu demonstrated the highest power factor at 973K, which resulted from the simultaneous improvement in electrical conductivity and Seebeck coefficient. The conduction mechanisms were further discussed.
PHYSICA B-CONDENSED MATTER
(2023)
Article
Physics, Multidisciplinary
Irfan Ali Abro, Ali Dad Chandio
Summary: Aircraft and aero-engine applications have utilized nickel aluminide coatings to enhance the corrosion resistance and oxidation resistance of high-temperature thermal barrier coatings. This study aims to develop a new diffusion barrier pure Al-rich beta-NiAl bond coat. Aluminide coatings are deposited using in situ chemical vapor deposition (CVD) on K-403 superalloy substrate with and without a pre-electro-deposited nickel layer. Material characterization techniques reveal a double-layered structure, with an outer-layer of Al-rich beta-NiAl and an inner inter-diffusion zone.
EUROPEAN PHYSICAL JOURNAL PLUS
(2023)
Article
Crystallography
Ambreen Azmat, Shafaq Asrar, Iftikhar Ahmed Channa, Jaweria Ashfaq, Irfan Ali Chandio, Ali Dad Chandio, Muhammad Ali Shar, Mohamad S. S. AlSalhi, Sandhanasamy Devanesan
Summary: This study compares the performance of biocompatible alloys containing non-toxic elements, such as tin (Sn) and niobium (Nb), with commonly used alloys containing aluminum (Al) and vanadium (V). The results show that alloys containing Nb and Sn have lower corrosion rates in simulated body fluid and higher hardness, making them suitable for orthopedic implants in humans.
Article
Materials Science, Multidisciplinary
Nurul Huda Abdul Razak, Nowshad Amin, Kazi Sajedur Rahman, Jagadeesh Pasupuleti, Md. Akhtaruzzaman, Kamaruzzaman Sopian, Munirah D. Albaqami, Ammar Mohamed Tighezza, Zeid A. Alothman, Mika Sillanpaa
Summary: The influence of Nd:YAG laser's oscillation energy on creating textured surfaces on silicon wafers was investigated in this study. The results showed that the reflectance of multicrystalline silicon wafers was reduced by 15% after laser texturing. The laser texturing process caused structural defects and a laser damage layer on the silicon surface, which affected the lifespan of the photo-generated carriers.
RESULTS IN PHYSICS
(2023)
Article
Chemistry, Multidisciplinary
B. Kanthappa, J. G. Manjunatha, N. Hareesha, Ammar M. M. Tighezza, Munirah D. D. Albaqami, Mika Sillanpaa
Summary: The study developed a sensitive, economical, green, and simple voltammetric sensor for detecting the redox behavior of rutin using an electrochemical polymerization method. The modified electrode (Poly(DL-PN)MGPE) demonstrated higher electrocatalytic activity and active sites compared to the bare graphene paste electrode (BGPE), enabling the analysis of rutin in phosphate-buffered saline (PBS) of pH 6.5. The Poly(DL-PN)MGPE exhibited excellent reproducibility, antifouling nature, repeatability, and stability for rutin detection, with a detection limit of 8.31 nM. The applicability of Poly(DL-PN)MGPE for rutin detection in citrus fruit juice samples was also discussed.
Article
Computer Science, Information Systems
Muhammad Awais Javeed, Muhammad Arslan Ghaffar, Muhammad Awais Ashraf, Nimra Zubair, Ahmed Sayed M. Metwally, Elsayed M. Tag-Eldin, Patrizia Bocchetta, Muhammad Sufyan Javed, Xingfang Jiang
Summary: In this study, a fast Hough transform approach based on Otsu-threshold and Canny-edge-detection was proposed for accurate lane detection in autonomous vehicle driving. Gaussian blur filter and Sobel operator were used for image preprocessing and edge detection, followed by Hough transform for lane identification. Experimental results showed that the proposed method achieved high lane detection performance.
Article
Energy & Fuels
Iqra Ashraf, Qasim Abbas, Yaqin Huang, Najam Ul Hassan, Munirah D. Albaqami, Ammar Mohamed Tighezza, Sayed M. Eldin, Muhammad Sufyan Javed, Awais Ahmad, Rafael Luque
Summary: This study presents a new approach for developing zinc-ion hybrid supercapacitors by using vanadium-doped manganese oxide aerogel structured cathode material. The doped material expands interlayer distance, creates more active sites and channels for fast ionic diffusion, and offers good structural stability. The as-fabricated ZIHC shows high specific capacitance, capacitance retention, and Coulombic efficiency, as well as superior energy density compared to previous reports.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Chemistry, Multidisciplinary
Shahid Hussain, Samuel B. Adeloju
Summary: This study describes the fabrication of a highly selective and ultrasensitive sulfite nanobiosensor using a layered architectural fabrication method. The nanobiosensor exhibits fast response time, wide linear calibration range, and excellent sensitivity, and can be successfully applied to sulfite determination in real samples.
Article
Engineering, Environmental
Jesse Nii Okai Amu-Darko, Shahid Hussain, Qiang Gong, Xiangzhao Zhang, Ziwei Xu, Mingsong Wang, Guiwu Liu, Guanjun Qiao
Summary: In this study, In2O3/PANI composites were synthesized using the hydrothermal technique to explore their sensing capabilities for NO2 gas. The gas sensing properties, such as response/recovery time, optimal temperature, and recyclability, were investigated by analyzing the morphology, purity, and crystal structures of the samples. The In2O3/PANI-1 sensors exhibited high responses, quick response and recovery times, and a low detection limit to NO2 gas at a working temperature of 250 degrees C. The fundamental detecting mechanism for NO2 gas and the electrical characteristics of the In2O3/PANI composites were also discussed.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Engineering, Multidisciplinary
Shahid Hussain, Kazi Sabiruddin
Summary: Different phases formed during the synthesis of hydroxyapatite (HA) powder by hydrothermal reaction via Indian clam seashell due to incomplete reaction. Rietveld refinement method was used to calculate the weight fraction of different phases. The highest amount of HA phase was found in powders synthesized at 700, 800, and 900 degrees C for 2 h duration, while highly pure HA powders can be prepared at 1000 degrees C and 1100 degrees C for 3 h time. Raman spectroscopy was used to study the vibration modes of PO43- tetrahedral.
SADHANA-ACADEMY PROCEEDINGS IN ENGINEERING SCIENCES
(2023)
