Article
Materials Science, Paper & Wood
Jacobs H. Jordan, Michael W. Easson, Stephanie Thompson, Qinglin Wu, Brian D. Condon
Summary: Agricultural waste and residues, such as cotton gin trash and cotton gin motes, were used to prepare lignin-containing cellulose nanofibers with gradient degrees of lignin content. The physical properties of the nanofibers were affected by the lignin content and other components, impacting thermal stability and crystallinity. The degree of polymerization was smaller after processing, with differences based on the source material, resulting in slightly different suspension viscoelastic behavior.
Article
Instruments & Instrumentation
Yongliang Liu, Hee-Jin Kim
Summary: Maturity is a critical factor affecting the processing and performance of cotton fiber. Rapid and accurate identification of fiber maturity phenotypes and genotypes is important for breeders. This study explored the use of FT-IR combined with SIMCA-PCA to discriminate between different genotypes of wild type (WT) cotton fibers.
APPLIED SPECTROSCOPY
(2023)
Article
Materials Science, Paper & Wood
Yan Song, Wei Jiang, Haoxi Ben, Yuanming Zhang, Guangting Han, Arthur J. Ragauskas
Summary: Preparation of deuterium incorporated cellulose is important for investigating cellulose internal structure and expanding its application fields. The study successfully prepared cellulosic cotton fibers with anti-rehydration deuterium incorporation and characterized the process using nuclear magnetic resonance and spectroscopy. The results showed that the hydrogen-deuterium exchange occurred preferentially in the amorphous cellulose component and increased treatment time led to higher deuterium incorporation. Additionally, the isotope effect did not affect the cellulose microstructure, crystalline index, or degree of polymerization properties significantly.
Article
Chemistry, Multidisciplinary
Lei Wang, Guangyuan Xie, Hanchang Hu, Qiuyu Zhu, Jing Zhou, Zhicheng Yu
Summary: This study developed a urea-free dye fixation process to improve the dye fixation of reactive dyes in inkjet printing and reduce the environmental impact. The effects of moisture content and 3-chloro-2-hydroxypropyltrimethylammonium chloride (CHPTAC) concentration on inkjet printing performance were investigated. The results indicated that increasing the moisture content of cotton fabric promoted the diffusion and fixation of reactive dyes, and the urea-free process achieved good dye fixation and decreased environmental impact.
Article
Instruments & Instrumentation
Luis G. Vieira
Summary: Comprehensive modeling of non-polarized infrared attenuated total reflection spectrum based on Fresnel equations and wavenumber-dependent dielectric function models is proven to be an effective method to retrieve optical functions. The method is validated and its reliability is demonstrated by comparing the computed refractive index of water with literature data.
APPLIED SPECTROSCOPY
(2023)
Article
Chemistry, Physical
Wenjie Zhang, Bohan Li, Ruitao Lv, Huaming Li, Yuqing Weng, Wanci Shen, Feiyu Kang, Zheng-Hong Huang
Summary: Transforming cotton into functional flexible transparent film through deconstruction and reconstruction enables high-resolution printing of text and QR codes as well as direct fabrication of flexible microsupercapacitors with strong bonding interfaces. The cotton-derived film demonstrates excellent printability, swellability, degradability, and retained hydroxyl groups, making it superior to plastic in wearable device manufacturing and printing field.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Multidisciplinary
Sihong Ye, Mingli Xu, Hui Sun, Ying Ni, Rui Wang, Runping Ye, Lingzhong Wan, Fangzhi Liu, Xiaonan Deng, Juan Wu
Summary: A novel magnetic bio-adsorbent was synthesized by modifying cotton linter (CL) cellulose with deep eutectic solvents (DESs) and Fe3O4 magnetic nanoparticles. The adsorption capacity of the bio-adsorbent for Cu2+ was significantly improved due to the presence of Fe3O4 nanoparticles and the dissolution of DES, which increased the ion-exchange ability and chelation reaction of Cu2+. The adsorption behavior was well described by the Freundlich isotherm model and quasi-second-order kinetics model, indicating multiple adsorption mechanisms.
Article
Materials Science, Textiles
Jiangxin Ding, Haifeng Wang, Zhen Dong
Summary: A new strategy for reducing fiber strength loss during the extraction of cotton stalk bark fibers was investigated. By introducing a cationic modification pretreatment, the fiber strength loss was lowered and high-quality CSBF with good fineness and high breaking strength was obtained.
FIBERS AND POLYMERS
(2023)
Article
Biochemistry & Molecular Biology
Jing Wu, Qingjun Ding, Wen Yang, Luoxin Wang, Hua Wang
Summary: This study investigated the influence of submicron hydrophilic fibers on the hydration and microstructure of Portland cement paste. The results showed that the addition of submicron fibrillated cellulose fibers can accelerate the cement hydration rate and improve the microstructure of cement paste. This is because the scale of the fibers matches the size of the C-S-H gel and provides potential nucleation sites for hydration products, leading to a more homogeneous and compact microstructure.
Article
Chemistry, Multidisciplinary
Jian Shen, Jiangbin Yu, Hao Luo, Xiang Liu, Qiongzhi Zhou, Tianxiang Wei, Xinyi Yu, Yahui Wu, Yifei Yu, Mingjie Li
Summary: In this study, nitrogen-doped carbons were prepared by carbonizing a mixture of cotton pulp and melamine, resulting in improved specific capacitance through pore and surface modification. The nitrogen-doped carbons exhibited high specific capacitance and good stability, providing a new cost-effective carbon-based material for energy storage applications.
Article
Instruments & Instrumentation
Shaoyang Gao, Yuanchang Liu, Rui Yatabe, Takeshi Onodera, Masami Nishimura, Takuya Nogi, Toshiaki Oe, Kiyoshi Toko
Summary: This paper discusses and utilizes the multiple-reflection attenuated total reflectance (ATR) method of near-infrared spectroscopy (NIRS) for determining the glycogen content in Japanese wagyu beef. Experimental results from diffuse reflection are also compared. Glycogen, as a reservoir of glucose units, has a positive impact on the palatability of wagyu beef. By preprocessing the obtained spectra using various methods, a calibration and prediction model between spectral data and glycogen content is developed using partial least squares regression (PLSR). The study finds that the multiple-reflection ATR method outperforms the diffuse reflection method in predicting glycogen content in wagyu beef, with a determination coefficient of 0.72 compared to 0.29. These results suggest the potential of the multiple-reflection ATR method for predicting glycogen content in wagyu beef and have implications for the development of portable beef glycogen sensors in the future.
SENSORS AND MATERIALS
(2023)
Article
Instruments & Instrumentation
Luis G. Vieira
Summary: This article presents a method for measuring the optical functions of a flat sample made of homogeneous and isotropic material using attenuated total reflection spectroscopy when there is poor contact between the sample and the internal reflection element. The method treats the spacing between the internal reflection element and the sample as an adjustable parameter in the fitting of s- and p-polarized spectra obtained when the gap distance is unknown. The method's ability to accurately determine the optical functions is demonstrated through testing with synthetic and experimental spectra (polystyrene).
APPLIED SPECTROSCOPY
(2023)
Article
Biochemical Research Methods
Lipeng Zhang, Xianchang Li, Shiding Zhang, Qianqian Gao, Quanwei Lu, Renhai Peng, Peng Xu, Haihong Shang, Youlu Yuan, Huawen Zou
Summary: This study used micro-FTIR to investigate cellulose crystallinity in developing cotton fibers and introduced a new IR crystallinity index method. The results demonstrated that micro-FTIR combined with curve fitting method is effective for qualitatively analyzing crystallinity in cotton fibers.
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
(2021)
Article
Materials Science, Multidisciplinary
Daniel J. Silva, Rennan F. S. Barbosa, Alana G. Souza, Rafaela R. Ferreira, Paulo H. Camani, Derval S. Rosa
Summary: This study utilized ultrasound waves to coat cotton fibers with zinc oxide and copper nanoparticles, evaluating the impact of this surface treatment on various properties of the cotton fibers through different tests.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Instruments & Instrumentation
Jakub Budil, Pavla Stenclova, Alexander Kromka, Petra Liskova
Summary: In this study, infrared attenuated total reflection spectroscopy coupled with optical and confocal laser scanning microscopy was used to analyze the real-time development of Pseudomonas syringae biofilm. The kinetics of representative band areas in the spectral window 4000-800 cm(-1) were analyzed to characterize different developmental stages of the biofilm.
APPLIED SPECTROSCOPY
(2023)