Article
Materials Science, Textiles
Caihong Gong, Kaihui Zhang, Ce Yang, Juan Chen, Shen Zhang, Chunwang Yi
Summary: This study proposed a simple method for separating and recycling PA6 and PU components of PA6/PU debris, showing that PU can be dissolved rapidly in N,N-dimethylformamide and recovered through selective precipitation-stripping. The separated samples exhibited stable chemical structure and thermal properties, suitable for reuse as recycled plastic materials.
TEXTILE RESEARCH JOURNAL
(2021)
Article
Gastroenterology & Hepatology
Yuta Sugiyama, Yumiko Mori, Misaki Nara, Yusuke Kotani, Emiko Nagai, Hiroki Kawada, Mayu Kitamura, Rika Hirano, Hiromi Shimokawa, Akira Nakagawa, Hiromichi Minami, Aina Gotoh, Mikiyasu Sakanaka, Noriho Iida, Takashi Koyanagi, Takane Katayama, Shigefumi Okamoto, Shin Kurihara
Summary: Gut microbiota can produce aromatic amines, which are different from dietary sources. The production of these aromatic amines is related to the activity of aadc in gut bacteria and may have an impact on diseases such as osteoporosis and irritable bowel syndrome. Human AADC inhibitors can inhibit the production of aromatic amines in gut bacteria.
Article
Environmental Sciences
Mahmood Ul Hasan, Shahid Adeel, Fatima Batool, Tanvir Ahmad, Ren-Cheng Tang, Nimra Amin, Shahid Rehman Khan
Summary: In the current pandemic scenario, sustainable green products with antiviral, antioxidant, and antibacterial properties are gaining worldwide attention. Cassia obovata has been valorized as a natural source of yellow dye for nylon, and using microwave treatment and bio-mordants can result in new shades with excellent fastness characteristics.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Chemistry, Multidisciplinary
Tatsuya Morofuji, Shota Nagai, Airi Watanabe, Kota Inagawa, Naokazu Kano
Summary: This study reports a new activation mode of amine catalysis called streptocyanine, which enables the conversion of pyridine rings to benzene rings. By N-arylation of pyridines with an alkenyl substituent at the 3-position, N-arylpyridiniums are generated, which can react with a catalytic amount of piperidine to form streptocyanine intermediates. These intermediates can then undergo a ring-closing reaction to form a benzene ring, releasing the amine catalyst. Mechanistic studies support the proposal that streptocyanine is an intermediated in this catalytic process.
Article
Chemistry, Applied
Junxiang Ma, Kunyi Cai, Chao Yang, Meiqi Li, Xiaopeng Pan, Yi Huang, Juming Yao, Jinhuan Zheng, Jianzhong Shao
Summary: A new photocurable coating process combining UV-LED and deliberately synthesized PUA was developed. By adjusting the molecular weight and functional groups in the PUA, a balance between wear resistance and flexibility of the coatings was achieved. Textile artificial leathers fabricated with the optimized formula exhibited excellent colorfastness to rubbing and satisfactory mechanical properties.
PROGRESS IN ORGANIC COATINGS
(2022)
Article
Polymer Science
Sahar Kiani, Ahmadreza Raisi
Summary: Blend membranes of polyurethane (PU) and nylon 6(3) were developed for gas separation applications, and the influence of nylon 6(3) on the microstructure and separation performance was investigated. The addition of nylon 6(3) decreased chain mobility, increased crystallinity, and resulted in a rough microstructure.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Enzo Pichon, David De Smet, Paul Rouster, Kim Freulings, Andrij Pich, Katrien V. Bernaerts
Summary: In this study, non-isocyanate polyurethane(urea)s with high bio-based content were synthesized and used as cationic waterborne dispersions in a sustainable coating system. The functionality and hydrophobicity of the neutralization agent as well as the dicarbamate monomer structures were investigated. The results showed that the combination of a monofunctional and hydrophilic neutralization agent led to stable dispersions with better properties compared to the commercial waterborne polyurethane dispersion reference.
MATERIALS TODAY CHEMISTRY
(2023)
Article
Materials Science, Textiles
Da Eun Lee, Hyun Woo Yoo, Jung Jin Lee
Summary: In this study, bromocresol green was used as a pH-indicating dye to dye nylon 66 fabric for pH sensing application. The colored samples showed different colors when immersed in solutions of varying pH, with yellow samples dyed at pH 3 or less maintaining their orange color after immersion in acidic solutions. The results suggest that nylon 66 fabric dyed with bromocresol green may be used as a textile sensor.
FIBERS AND POLYMERS
(2022)
Article
Chemistry, Physical
Futao Sai, Haitao Zhang, Jianbo Qu, Jianyong Wang, Xiuzhong Zhu, Yang Bai, Peng Ye
Summary: This study successfully prepared waterborne polyurethane films with amine-response, self-healing, and recyclable functions. Among them, the WPU-2 film showed excellent self-healing capability, achieving a self-healing efficiency of 91.11% at high temperature. The film exhibited rapid response to dimethylamine, suitable for monitoring the freshness of seafood, and also had the characteristic of recyclability.
APPLIED SURFACE SCIENCE
(2022)
Article
Polymer Science
Jiong-Bo Chen, Sheng-Yu Lin, Naveed Ahmad, Chung-Feng Jeffrey Kuo
Summary: This series of studies aims to design acrylate-terminated polyurethanes for use in nylon seamless bonded fabrics. The researchers found that increasing the concentration of N,N-dimethylacrylamide (DMAA) in the polyurethane adhesive can effectively promote the formation of hydrogen bonds, leading to improved mechanical and processing properties of the adhesive.
Article
Agricultural Engineering
Ali Ozsevinc, Cemil Alkan
Summary: Polyurethane (PU) shell capsules were prepared to release medicinal lavender oil over time on cotton fabrics. These fragrance microcapsules in textiles are known as aromatherapeutic textiles. Environmentally friendly propylene glycol (PG) and isocyanate were combined to form the capsule shell, providing aromatherapeutic benefits for anxiety treatment. Characterization of the fragrance capsules was done by FT-IR spectroscopy, POM, SEM, and controlled release measurements. The capsules demonstrated specific peaks in the FT-IR spectral analysis and had a spherical structure as observed in the morphology analysis.
INDUSTRIAL CROPS AND PRODUCTS
(2023)
Article
Polymer Science
Amado Lacruz, Mireia Salvador, Miren Blanco, Karmele Vidal, Amaia M. Goitandia, Lenka Martinkova, Martin Kyselka, Antxon Martinez de Ilarduya
Summary: Waterborne polyurethane-urea dispersions based on 100% bio-based materials have been successfully synthesized and doped with single-walled carbon nanotubes to enhance the multifunctional properties of textiles. The synthesized dispersions exhibit remarkable water-repellency and water column, offering a sustainable alternative to traditional waterproof coatings. The addition of SWCNT to the polymeric matrices has resulted in textile coatings with excellent electrical conductivity and water column properties, making them highly desirable in protective workwear and technical textiles.
Article
Green & Sustainable Science & Technology
Jintao Wang, Xiuxia Zhang, Peng Yu
Summary: This study developed a textile material with superhydrophilicity and high oleophobicity through a simple dip-coating method, which can effectively separate oil-water mixtures with good separation efficiency.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Chemistry, Multidisciplinary
Riccardo Donadini, Carlo Boaretti, Luca Scopel, Alessandra Lorenzetti, Michele Modesti
Summary: Methylenedianiline (MDA) is a secondary product of the glycolysis process of polyurethane (PU) scraps, posing challenges for the recycling of PU. This study investigated different deaminating agents (DAs) and found that 2-ethylhexyl glycidyl ether and acetic anhydride were effective in reducing MDA content.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Multidisciplinary Sciences
Seiichi Takamatsu, Suguru Sato, Toshihiro Itoh
Summary: This study presents a thin stress-concentration-relocating interposer that can sustain up to 36% textile stretch in electronic textile devices. By transferring the stress concentration area from the fabric circuit to the interposer, the stress concentration in the wiring is reduced. This research is of great significance for the development of reliable packaging for electronic textiles.
SCIENTIFIC REPORTS
(2022)