Article
Polymer Science
Hai H. Le, Tung X. Hoang, Erik Schoene, Uta Reuter, Klaus Werner Stoeckelhuber, Subhradeep Mandal, Kedar N. Dhakal, Rameshwar Adhikari, Sven Wiessner
Summary: The study focused on developing self-healable rubber blends consisting of modified bromobutyl rubber (BIIR) and natural rubber (NR) to enhance tensile strength while maintaining self-healing properties. By exploring the selective wetting of hybrid filler, the synergistic effect on mechanical properties was explained.
Article
Polymer Science
Hai Hong Le, Tung Xuan Hoang, Syed Bilal Haider, Mandal Subhradeep, Uta Reuter, Kedar Dhakal, Rameshwar Adhikari, Katrin Reincke, Subhan Saleah, Sven Wiessner
Summary: In this work, a new testing strategy was proposed to study the effect of a functional group on the interaction between rubber and filler in a rubber compound. The wetting behavior of the filler was used as a measure of the functional group's effect. The strategy was applied to investigate the impact of non-rubber components in natural rubber on the rubber-filler interaction in carbon black filled compounds.
EXPRESS POLYMER LETTERS
(2023)
Article
Polymer Science
Vaishak Nambiathodi, Siby Varghese, Neethu Varghese
Summary: The study reveals that in the blend of natural rubber (NR) and butadiene rubber (BR), N330 carbon black tends to migrate more towards the BR phase, resulting in decreased tan d values and a shift in Tg towards the positive side in the BR phase.
Article
Polymer Science
Selin Soekmen, Katja Osswald, Katrin Reincke, Sybill Ilisch
Summary: High compatibility and good rubber-filler interactions are essential for high quality products. The influence of treated distillate aromatic extract (TDAE) oil content and its addition time on interactions between silica and rubber chains were investigated, showing that addition time of TDAE can impact the development of bounded rubber structure and interfacial interactions, especially at short mixing times. Increasing amount of oil in blends enhanced elongation at break, and decreased Shore A hardness and tensile strength.
Article
Construction & Building Technology
Ebenezer O. Fanijo, Emad Kassem, Ahmed Ibrahim
Summary: The study demonstrated that the use of SCMs along with glass powder can significantly reduce ASR expansion, with binary or ternary blends of 20% replacement being effective for ASR mitigation, and the combination of glass powder with conventional SCMs performed better in reducing cracks due to ASR expansion.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Polymer Science
Lingyun Lyu, Takeshi Hanada, Naohiro Yamahira, Jun Morita, Ryota Yamamoto, Ken Itomi, Takumi Adachi, Sho Kubouchi, Shin Horiuchi
Summary: The distribution of nano-sized silica in binary rubber blends is accurately characterized by STEM-EDX and STEM-HAADF tomography techniques, providing a quantitative visualization of the complex morphologies of the rubber composite materials.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Multidisciplinary Sciences
Anna Lapinska, Natalia Grochowska, Jerzy Antonowicz, Przemyslaw Michalski, Kamil Dydek, Anna Duzynska, Agata Daniszewska, Milena Ojrzynska, Klaudia Zeranska, Mariusz Zdrojek
Summary: This study explores the pressing problem of insufficient homogeneity in nanocomposites' production and its impact on material properties. The effects of different mixing techniques on filler distribution and resulting structural and thermal properties were evaluated. The results show that the concentration of graphene significantly influences polymer chain mobility, grain sizes, defect density, and cross-linking level.
SCIENTIFIC REPORTS
(2022)
Article
Polymer Science
Renu Jose, Lity Alen Varghese, Unnikrishnan Gopalakrishna Panicker
Summary: The dielectric properties of NR/MPU blends have been effectively improved by adding nanofillers, leading to enhancements in capacitance, dielectric permittivity, loss factor, volume resistivity, and electrical impedance. The improvement is attributed to the development of micro-capacitance structures in the NR/MPU matrix, promoting relaxation processes based on interfacial polarization and segmental mobility.
Article
Green & Sustainable Science & Technology
S. M. Mozammil Hasnain, Rajeshwari Chatterjee, Prabhat Ranjan, Gaurav Kumar, Shubham Sharma, Abhinav Kumar, Bashir Salah, Syed Sajid Ullah
Summary: The demand for sustainable alternative-fuels in transportation and agriculture is crucial due to petroleum depletion and environmental challenges. Ternary-blends of diesel, biodiesel, and Methyl oleate show promise in reducing emissions and improving engine performance. In this study, soy methyl ester is blended with methyl oleate and diesel, and its emissions and performance were tested in a CRDI engine. Various methods like FTIR, UV-vis, and NMR were used to characterize and evaluate the physical properties. The blended biodiesel samples retained the properties of diesel, with the addition of methyl oleate improving fuel consumption and reducing hydrocarbon and carbon monoxide emissions.
Article
Polymer Science
Yati Mardiyati, Anna Niska Fauza, Onny Aulia Rachman, Steven Steven, Sigit Puji Santosa
Summary: Oil spills have negative impacts on living creatures and the environment. In this study, natural rubber foam was used as a sorbent material for oil absorption. Adding silica and silica-lignin hybrid increased its oil sorption capacity and reusability. The filled rubber foam exhibited excellent hydrophobicity and stable reusability. Therefore, silica-lignin hybrid-filled rubber foam has the potential to be a green oil absorbent material.
Article
Biochemistry & Molecular Biology
Emilia Kaczkowska, Aneta Panuszko, Piotr Bruzdziak
Summary: Intermolecular interactions in aqueous solutions play a crucial role in biological processes. ATR-FTIR spectroscopy can be used to analyze these interactions, with a method of data pretreatment facilitating the analysis of ternary solution spectra. Solutions containing stabilizing osmolytes show less vibrational structure changes compared to those with destabilizing osmolytes, indicating direct interactions between N-Methylacetamide and destabilizers.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Energy & Fuels
K. Sudalaiyandi, Karthick Alagar, Vignesh R. Kumar, Manoj V. J. Praveen, P. Madhu
Summary: Fossil fuels are being depleted and researchers are turning to new energy options. A study was conducted to investigate the efficiency and emissions of diesel fuel blended with linseed and rubber seed oil as biodiesels. The experimental results showed that blends with 5% and 10% of linseed and rubber seed oil had the optimum performance efficiency compared to other blends.
Article
Polymer Science
Li-Zhao Huang, Kun Song, Chao-Wen Yang, Jing-Jing Han, Ting-Ting Yang, Jia-Zhuang Xu, Guang-Ai Sun, Zhong-Ming Li, Dong Liu
Summary: A study aimed to investigate the filler network structures in silicone rubber with different filler volume fractions using in situ tensile-small-angle X-ray scattering (SAXS). The results showed that the aggregate sizes decreased and the homogeneity of aggregates and filler network improved with increasing filler volume fraction. Intrinsic differences in filler networks between the vertical and horizontal elongation directions were revealed. The intensity changes in medium-q range of Kratky plots suggested that the aggregates act as a stable unit of the filler network during elongation. Additional peaks appeared in the horizontal direction, which were attributed to the separation of initially adjacent aggregates and the expansion of correlation length.
Article
Polymer Science
You Xu, Weidong Ai, Jing Zuo, Wentong Yang, Cundi Wei, Shaonan Xu
Summary: Preparation of coal gasification fine slag mesoporous silica filler can enhance the mechanical and wet skid performance of styrene butadiene rubber composites, reduce the cost of rubber composites, and decrease environmental pollution.
Article
Biochemistry & Molecular Biology
Giovanni Consolati, Eros Mossini, Dario Nichetti, Fiorenza Quasso, Giuseppe Maria Viola, Erkin Yaynik
Summary: The study compared the free volume fraction obtained from experiments with the lattice-hole model, revealing that a cylindrical flattened geometry of the cavities provided better agreement than a spherical shape. Additionally, the best fit was found for holes that expanded preferentially in the radial direction, with a decrease in aspect ratio as temperature decreased.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Chemistry, Physical
Vikram G. Kamble, Johannes Mersch, Muhammad Tahir, Klaus Werner Stoeckelhuber, Amit Das, Sven Wiessner
Summary: The study presents a method for preparing adaptive fiber-elastomer composite structures, which can be used in smart applications such as soft robotics. By combining a functional fabric with liquid polybutadiene rubber using a low-temperature vulcanization process, the researchers successfully developed intelligent structures. These structures can achieve controlled deformation through Joule heating.
Article
Polymer Science
Kriengsak Damampai, Skulrat Pichaiyut, Klaus Werner Stoeckelhuber, Amit Das, Charoen Nakason
Summary: Enhancement of ENR properties by incorporating CNT-CCB hybrid fillers leads to improved mechanical strength, thermal stability, and electrical conductivity.
Article
Chemistry, Physical
Christian Biermaier, Phillip Petz, Thomas Bechtold, Tung Pham
Summary: Conductive textiles are important in electronics development, but their machine-washing durability is a major challenge. In this study, copper-plated polyamide 66 and cellulose fabrics were used to investigate wash ageing mechanisms. A flex tester with online resistance recording was developed and various tests were conducted. The results showed that the contribution of mechanical and chemical ageing varies depending on the substrate material. The delamination of the copper layer was found to be the main cause of fatigue, facilitated by the washing solution. A cumulative fatigue model was developed and the determination of the end of lifetime by intended use was discussed.
Article
Materials Science, Paper & Wood
Jantip Setthayanond, Felix Netzer, Kattika Seemork, Potjanart Suwanruji, Thomas Bechtold, Tung Pham, Avinash P. Manian
Summary: Cationisation of cellulose fibers has been studied extensively as an alternative method for salt-free reactive dyeing. However, the chemical balances of the cationisation reaction are often neglected, leading to substantial chemical consumption and issues of uneven dyeing and shade variations. A new approach using low concentrations of CHPTAC in a pad batch cationisation process for cotton fabric proved to achieve a low level cationisation with a cationic group content ranging from 5 to 79 mmol kg(-1). Exhaust dyeing experiments showed that a salt-free reactive dyeing is possible with a low cationic group content of 14 mmol kg(-1). This optimized low-level cationisation reduces overall chemical consumption, offering a cleaner alternative to traditional high-salt reactive dyeing.
Article
Polymer Science
Florian Wurm, Felix Netzer, Uwe Schaeffner, Jorg Leukel, Julia Schweiss, Pham Tung, Thomas Bechtold
Summary: The aim of this study was to investigate the interface between cellulose acetate (CA) and viscose (CV) in an all-cellulosic compound and to evaluate the feasibility of hydrophobic CA-coatings on viscose fibers. The mechanical strengths of cellulose foil-CA compounds were compared to pure CA samples. The effects of CA coating on CV fibers were investigated by pretreating the fibers and determining their properties.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Polymer Science
Avinash P. Manian, Felix E. Kraegeloh, Doris E. Braun, Amalid Mahmud-Ali, Thomas Bechtold, Tung Pham
Summary: The investigation focused on the selective dissolution of polyamide 66 (PA 66) from mixtures with cellulose fibers using calcium chloride-ethanol-water (CEW). The dissolved PA 66 was reprecipitated with water. The cellulose fibers were undamaged by the treatment and could effectively remove a substantial proportion of the PA 66 residues. About 80-90% of the original PA 66 in the mixtures could be recovered. Effective removal of calcium residues from the recovered PA 66 is critical to prevent changes in its melt behavior.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Christian Biermaier, Thomas Bechtold, Tung Pham
Summary: This study investigates the electroless copper deposition performance on woven cellulose fabrics. Silver seeds were printed on the fabrics, followed by electroless copper deposition. The layer formation and conductivity of coated fabrics were studied by varying the deposition time. It was found that the electrical resistance initially decreased rapidly with increasing deposition time, and then reached a plateau after 120 min. The strain sensitivity and percolation efficiency of the coated fabrics decreased as the deposition time increased. The substrate construction, such as yarn crossings, had a strong influence on the conductive performance and percolation efficiency.
Article
Chemistry, Applied
Avinash P. Manian, Sophia Mueller, Thomas Bechtold, Tung Pham
Summary: Circularity of post-consumer textile wastes should take into account the presence of dyes. Denim textiles, which are predominantly dyed with indigo, can be recycled fiber-to-fiber to reuse the dye. An analytical method using alkaline Fe(II)-complex with triethanolamine as ligand is developed to quantify the indigo content. The method allows for measurement of dye concentration, regardless of the uneven dye distribution in denim, making it suitable for indigo quantification in denim waste.
Article
Polymer Science
Michael Cordin, Avinash P. Manian, Thomas Bechtold, Tung Pham
Summary: Thermoplastic all-polymer composites, made from the same material for reinforcing fibers and matrix material, have become increasingly popular due to their potential for recycling compared to traditional composites with inorganic reinforcements. This study proposes a new preparation concept for all-polyamide composites using a hybrid yarn of polyamide-6 and polyamide-66 fibers. By embroidering the hybrid yarn in the desired direction on a polyamide-6 fabric, composites with desired reinforcing fiber orientation can be prepared, maintaining the integrity of the reinforcing and unmelted PA66 fibers embedded in a molten PA6 matrix during thermoforming at 230 degrees C. The mechanical properties of these composites, including different matrix-to-reinforcement ratios and reinforcing fiber orientations, are characterized using quasi-static and high-speed tensile tests as well as penetration tests.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Acoustics
Margit Lenninger, Thomas Bechtold, Tung Pham
Summary: C.I. Sulphur Black 1 is an important dye for cellulose textiles due to its maximum colour depth at reasonable costs. In this study, pad-steam dyeing with C.I. Sulphur Black 1 was used, and the effects of an intensified washing process with ultrasonification on rub fastness were investigated. The results showed that ultrasound washing can improve the wet rub fastness of the dye.
ULTRASONICS SONOCHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Christian Biermaier, Carolin Gleissner, Thomas Bechtold, Tung Pham
Summary: Researchers investigated the basic mechanism of using citrate anion to fix silver species and form metal catalyst directly on textile substrates. During the particle formation process and subsequent electroless copper deposition, silver undergoes multiple oxidation state changes. Under reducing conditions, silver ions are converted to silver metal. Additionally, the thermal decomposition of silver citrate generates CO2 and hexane-2,5-dione.
ARABIAN JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Physical
Thomas Bechtold, Noemi Aguilo-Aguayo, Tung Pham
Summary: Disperse dyes are important colorants for dyeing polyester fibers, but their wastewater discharge poses an environmental burden. This study explores an alternative method of electrochemical dye reduction, and successfully demonstrates the cathodic reduction of dispersed organic dyes.
Article
Chemistry, Physical
Justus Landsiedel, Jacqueline Tschannett, Margit Lenninger, Sandra Stroj, Matthias Domke, Thomas Bechtold, Tung Pham, Noemi Aguilo-Aguayo
Summary: The study introduces the use of a siloxane interlayer as a strategy to modify the surface properties of polyamide 6.6 fabrics and improve the uniformity of copper surface coating. The application of the siloxane intermediate coating significantly enhances electrical conductivity and improves the appearance and properties of the fabrics.
SURFACES AND INTERFACES
(2023)
Article
Materials Science, Textiles
Carolin Gleissner, Thomas Bechtold, Tung Pham
Summary: In this study, three different principles of surface activation were compared for their effects on the properties of single polyamide fibers. The results showed that the CEW modification, atmospheric pressure plasma treatment, and grafting process all improved the wettability of the fibers but also decreased their tensile strength.
FIBERS AND POLYMERS
(2023)
Proceedings Paper
Engineering, Manufacturing
Christian Biermaier, Carolin Gleissner, Thomas Bechtold, Tung Pham
Summary: This study developed a novel method to form flexible conductive structures on textile substrates by silver precursor seeding and chemical copper deposition. Conductive lines of 2-3 mm with electrical resistances below 1 Omega cm(-1) were obtained using silver nitrate solution printing. In situ resistance recording revealed the establishment and removal of percolation for chemical ageing.
2022 IEEE INTERNATIONAL CONFERENCE ON FLEXIBLE AND PRINTABLE SENSORS AND SYSTEMS (IEEE FLEPS 2022)
(2022)
