Article
Chemistry, Physical
Xiaowei Yang, Ying Wang, Qian Huang, Yuqing Zeng, Wangyang Lu, Xianan Qin
Summary: Polyethylene terephthalate (PET) with its negatively charged surface repels bacteria but lacks direct antibacterial activity. Alkali-treated PET nanofibers, also negatively charged due to carboxyl groups, surprisingly exhibit remarkable antibacterial properties (89% and 75% antibacterial rate against S.aureus and E.coli, respectively). The increased carboxyl groups on the fiber surface induced by alkali-treatment attract positively charged cetyltrimethylammonium ions (CTA+), which can efficiently inactivate the bacteria by forming stable electrical double layers (EDL). An effective heavy-metal free antibacterial fiber has been developed by loading iron-phthalocyanine to the nanofibers, which can inactivate bacteria under dark conditions by utilizing surface CTA+ and weak reactive oxygen species.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Polymer Science
Choncharoen Sawangrat, Parichat Thipchai, Kannikar Kaewapai, Kittisak Jantanasakulwong, Jonghwan Suhr, Pitiwat Wattanachai, Pornchai Rachtanapun
Summary: The effect of argon and oxygen gases, as well as treatment times, on the properties of modified bamboo fibers using DBD plasma were investigated. Plasma treatment with inert gases generated ions and radicals on the fiber surface. Different spectroscopy and microscopy techniques confirmed changes in chemical composition, crystallinity, and surface roughness. Mechanical properties of the fiber-reinforced epoxy composites showed different trends with different plasma treatments and treatment times.
Article
Agricultural Engineering
Hong Chen, Jieyu Wu, Jiangjing Shi, Wenfu Zhang, Hankun Wang
Summary: The study aimed to investigate the effects of alkali treatment on the microstructure, chemical composition, and thermal properties of bamboo parenchyma cells and fibers. It was found that alkali treatment could extract starch and remove lignin from parenchyma cells, while almost not affecting hemicellulose content. In contrast, both lignin and hemicellulose in fibers were removed after alkali treatment.
INDUSTRIAL CROPS AND PRODUCTS
(2021)
Article
Polymer Science
Julia Beter, Boris Maroh, Bernd Schrittesser, Inge Muehlbacher, Thomas Griesser, Sandra Schloegl, Peter Filipp Fuchs, Gerald Pinter
Summary: This study investigates the effect of surface treatments on glass fibers in endless fiber-reinforced elastomers under high deformations. The results demonstrate that optimized surface treatments significantly enhance interface strength and chemical bonding, providing a basis for improved performance at the component level.
Article
Biochemistry & Molecular Biology
Juvvi Siva Naga Raju, Melvin Victor Depoures, P. Kumaran
Summary: The study demonstrated that alkali treatment significantly enhanced the physical, chemical, tensile, thermal, and surface properties of Symphirema involucratum stem fiber. The treated fiber showed improvements in density, crystallinity, tensile strength, and thermal stability, making it suitable for lightweight composite structures.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2021)
Article
Engineering, Electrical & Electronic
Xiuping Zhao, Xin Deng, Ling Zheng, Xiaolan Jiao
Summary: The study investigates the effects of modified bamboo fiber on the properties of composite hydrogels and develops ion-conductive hydrogels with different bamboo fiber contents. The results show that adding 1.5% modified bamboo fiber improves the mechanical and swelling properties of the hydrogel. Additionally, the conductivity of the composite conductive hydrogels significantly increases with the rise of bamboo fiber content.
ACS APPLIED ELECTRONIC MATERIALS
(2023)
Article
Materials Science, Paper & Wood
Muhammad Iqbal Maulana, Rio Ardiansyah Murda, Byantara Darsan Purusatama, Rita Kartika Sari, Deded Sarip Nawawi, Siti Nikmatin, Wahyu Hidayat, Seung Hwan Lee, Fauzi Febrianto, Nam Hun Kim
Summary: The physical and mechanical properties of BOSBs were significantly increased by alkali washing treatment at concentrations from 1% to 3%, with the greatest properties obtained at a 3% concentration. However, washing treatments at concentrations of 4% and 5% resulted in reduced physical and mechanical properties of the BOSBs.
Article
Construction & Building Technology
Xiao Cheng, Jianxun Liu, Chao Han, Xiaorui Zhang, Zhishen Wu
Summary: The rheological properties of fiber reinforced asphalt (FRA) can be significantly influenced by the surface properties of fibers. Modified basalt fibers with versatile surface features were tested and evaluated for their effects on the rheological properties of BF reinforced asphalt at different high-level temperatures. The study provides insights into the modification of silane coupling agents (SCAs) in combination with mineral fillers to enhance the overall performance of asphalt mixtures.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Construction & Building Technology
Qianqian Niu, Xiaopeng Yue, Zhenghong Guo, Zhengping Fang, Juan Li
Summary: This study successfully improved the mechanical and flame retardant properties of bamboo fiber-reinforced polylactic acid composites through fiber modification. The modified bamboo fiber enhanced the interface adhesion with polylactic acid, leading to increased tensile and impact strength. Compared to traditional bamboo fiber, the modified fiber also reduced the thermal conductivity of the composites and enhanced their flame retardancy.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Green & Sustainable Science & Technology
Zhenghao Chen, Keke Du, Hongnian Yin, Dongyan Zhang, Jian Gao, Wei Song, Shuangbao Zhang
Summary: A novel eco-friendly surface modification pathway for bamboo fiber (BF) was demonstrated using laccase to polymerize dopamine into poly(dopamine) (PDA) and deposit it on BF surface, improving the interfacial adhesion between PHB and BF.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Engineering, Civil
Shuang Du, Congqi Luan, Lianwang Yuan, Peng Du, Zonghui Zhou, Jinbang Wang
Summary: This study explores the impact of varying amounts of untreated steel fibers versus those that have undergone SCA treatment on the durability of Ultra-high performance concrete (UHPC). The results show that treating steel fibers with SCA significantly reduces the pore space between the matrix and steel fibers and increases the production of hydration products on the steel fiber surface. Furthermore, this treatment facilitates the formation of a compact transition zone between the UHPC matrix and steel fibers. Electrochemical corrosion resistance, chloride ion penetration resistance, frost resistance, and sulfate erosion resistance of UHPC are all enhanced by this method, significantly improving the durability of UHPC.
ARCHIVES OF CIVIL AND MECHANICAL ENGINEERING
(2023)
Article
Biochemistry & Molecular Biology
C. A. Rodriguez-Ramirez, Alain Dufresne, Norma D'Accorso, Nancy Lis Garcia
Summary: A chemical modification method was developed to modify the surface of cellulose nanofibrils (CNFs) from an ordinary bamboo. The modified CNFs were used as nano-fillers to improve the properties of films based on polylactic acid (PLA). The study showed that the addition of 5% modified CNFs resulted in improved thermal, mechanical, and surface properties of the films.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2022)
Article
Construction & Building Technology
Demei Yu, Anming Jia, Chao Feng, Wendi Liu, Tengfei Fu, Renhui Qiu
Summary: Bamboo fibers are effectively used for reinforcing asphalt mixture, with the synthesis of copolymers providing improvements to mechanical properties and longevity.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Chemistry, Applied
Manash Protim Mudoi, Shishir Sinha, Vijay Parthasarthy
Summary: The study found that alkaline treatment at a concentration of 5% is the optimal method for surface treatment of Himalayan nettle fibres. This treatment effectively removes impurities and improves the fibre properties, making them suitable for polymer composites.
CARBOHYDRATE POLYMERS
(2022)
Article
Materials Science, Textiles
Qifeng Zhang, Yunhai Ma, Zicheng Qi, Wei Song, Lekai Li, Zhanling Chen
Summary: This study investigated the effect of sodium hydroxide modification on the powder flowability of rapeseed straw reinforced fibers. The results showed that the modification reduced the flowability index and improved the morphological and surface characteristics of the fibers. This research has important implications for the industrial application of natural fiber composites.
JOURNAL OF NATURAL FIBERS
(2023)
