INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2024
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IF 7.7
Mei Long,Xiaohui Yang,Tao Shi,Yinye Yang
Developing an effective and user-friendly hemostatic agent is highly desired in the treatment of hemorrhage. Inspired by the natural nanostructure and abundant hydroxyl groups of cellulose and clay minerals, we designed an aerogel (HNTs/TOCNs) composed of halloysite nanotubes (HNTs) and TEMPO-oxidized cellulose nanofibers (TOCNs) with a hierarchical porous structure for the treatment of bleeding, using a simple and environmentally friendly self-assembly method. TOCNs formed a three-dimensional porous scaffold with excellent water-holding capacity. The incorporation of HNTs enhanced the hemostatic efficiency and mechanical properties of the 3D framework. The large interlayer spaces and wide channels within the HNTs/TOCNs aerogel provided rapid passage for blood, facilitating blood concentration and offering ample room for interactions between the HNTs/TOCNs aerogel and platelets, erythrocytes, and coagulation factors, thereby promoting hemostasis. Benefiting from the natural hemostatic properties and well-designed structure, the HNTs/TOCNs aerogel displayed excellent hemostatic performance both in vitro and in vivo . Notably, the hemostatic time of HNTs/TOCNs-2 was only 74 ± 8 s, which is approximately 50 % shorter than the blank control (151 ± 20 s) in liver femoral artery injury model. This design of an HNTs/TOCNs aerogel presents a unique opportunity to enhance hemostatic efficacy by synergizing the advantages of natural materials.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2024
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IF 7.7
Jiawen Sun,Xingda Liu,Jizhou Duan,Kunyan Sui,Xiaofan Zhai,Xia Zhao,Yuqing Zhu,Ding Guo,Baorong Hou
Nanocomposite polymer coatings are being used as a new generation of marine antibiofouling coatings because of their toxin-free chemical composition and ease of large-scale adoption. Cellulose nanocrystal (CN) exhibits significant potential for composite reinforcement. Herein, CN was surface-modified via α,ω-bis(3-(2-hydroxyl-terminated polydimethylsiloxane (HTPDMS), resulting in dihydroxyl-terminated poly(dimethylsiloxane)-grafted CN (HP-g-CN). The amine-terminated PDMS as the foundational component was sequentially reacted with isophorone diisocyanate, isophthalaldehyde, and carbon disulfide to produce PDMS-based poly (urea-thiourea-imine) (PDMS-PUTI). Subsequently, a composite (PDMS-PUTI/HP-g-CN) was produced through physical blending. The intrinsic imine bonds and dynamic hydrogen-bonding network were responsible for the self-healing properties, which achieved a healing efficiency of up to 89.2 %. HP-g-CN was grafted with the non-leaching lubricant, HTPDMS, resulting in improved mechanical properties (1.38 MPa of ultimate strength) and adhesion strength (2.43 MPa), along with the self-cleaning and self-lubricating performance (0.700 coefficient) of the coating. Additionally, the fouling resistance to bovine serum albumin (BSA, 10.44 μg cm −2 ), bacteria (∼97.08 % and ∼ 98.05 % reduction for Pseudomonas sp. ( P. sp.) and Shewanella sp. ( S. sp.), respectively), and diatoms (∼27 cells mm −2 ) was further enhanced. Marine field tests conducted over 90 days revealed that the coatings were static fouling-resistant for an extended period. This study demonstrated a multifunctional, high-performance, and environmentally friendly nanocomposite polymer coating for preventing marine biofouling.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2025
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IF 8.5
Ziyong Zhou,Jun Xu,Junliang Lu,Jun Li,Wei Zhang,Kefu Chen
The functional chemicals in conventional personal care products may have negative effects on both human body and the environment, and natural proteins are gaining increasing attention as alternatives to functional chemical. However, due to the poor absorption of proteins on the surface of the hair, it cannot perform their function well. In this study, a protein-based multifunctional complexes, made of keratin and cationic cellulose nanocrystals by opposite charged-induction, were prepared for improving the glossiness and reducing hair thermal-photo damage. By changing the ratio of keratin and cationic cellulose nanocrystals in complexes, the optical properties and oil delivery property were studied. It was found that the protein-based complexes could improve the glossiness of substrate and have synergistic reducing UV transmittance, especially UVB. Besides, the complexes with high ratio of C-CNC were beneficial for the deposition of silicone oil onto hair. And after treated with the complexes or the resulting emulsion, the water evaporation of hair during heat treatment and the hair damage during light radiation were effectively reduced to improve the thermal-photo protection for hair. This study was expected to provide new design for improving adsorption of protein on the substrate and developing protein multifunctional application in personal care.
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PROGRESS IN ORGANIC COATINGS
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2024
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IF 6.5
Siqi Zhang,Feng Zhang,Juanjuan Su,Jian Han
Passive daytime radiative cooling technology is a highly efficient cooling technology with zero energy consumption. When utilized for personal thermal management, radiative cooling textiles are capable of finely regulating the temperature of the human skin microenvironment. This study presents a cellulose acetate (CA) hierarchical porous coated textile that accomplishes high reflectance of sunlight over the full wavelength range, with a low cost and scalability, and a simple preparation procedure. With a high reflectance of 0.91 in the solar wavelength band and a high emissivity of 0.95 in the atmospheric window wavelength band, the CA hierarchical porous coated textile offers exceptional spectrally selective performances. It manifests a subambient cooling temperature of up to 19.0 °C and a skin overheating prevention effect of up to 4.2 °C. Furthermore, the coated textile possesses promising abrasion resistance, acid-alkali corrosion resistance, and mechanical properties. The present work provides a facile path for the development of green-based radiative cooling coated textiles.
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CHEMICAL ENGINEERING JOURNAL
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2024
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IF 13.3
Ailing Xu,Qingning Xia,Yunjie Ju,Yonggui Wang,Zefang Xiao,Haigang Wang,Yanjun Xie
Conductive gels are crucial in developing today’s flexible wearable technologies and have attracted widespread attention. However, achieving a harmonious balance among mechanical, sensing performance, and other functions still poses a significant challenge. This study designed an ionic liquid/poly (N, N-dimethylacrylamide-methacrylic acid-acrylamide)/cellulose (BPC) ionogel ternary system. The BPC ionogels exhibited excellent adhesion (47.18 kPa), self-healing capabilities, electrical conductivity, and mechanical properties including tensile strength (0.48 MPa), and elongation at break (899.69 %). In addition, the BPC ionogels have been proven suitable for making highly sensitive strain and temperature sensors, which could accurately identify human joint bending dynamics and facial micro-expression changes. It was characterized by fast response speed (140 ms), high sensitivity (strain sensitivity: 3.95–11.82, temperature sensitivity: 4.25 %/℃), and excellent cycle stability. When the BPC ionogel was customized into a capacitive pen, it could achieve smooth and delicate drawing operations on a smart touch screen. In summary, the BPC ionogels designed in this study demonstrate great potential in wearable electronic devices and human–computer interaction.
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CARBOHYDRATE POLYMERS
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2024
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IF 10.7
Ting Su,Xinxing Zhang,Zhiru Wang,Yu Guo,Xueyang Wei,Bin Xu,Hengtong Xia,Wenzhong Yang,Hui Xu
A cellulose nanocrystal (CNC) polymer hydrogel containing magnetic iron oxide nanorods (Fe 3 O 4 NRs) was prepared for As(III) removal in water. Systematic studies on the performance of these prepared CNC-based composite hydrogels for the removal of As(III) have been undertaken. The maximum adsorption capacity of the CNC- g -PAA/ q P4VP (CP q P) hydrogel was 241.3 mg/g. After introduction of Fe 3 O 4 NRs in the hydrogel, the maximum adsorption capacity of the resulting Fe 3 O 4 NRs@CNC- g -PAA/ q P4VP (FN@CP q P) hydrogel was further improved to 263.0 mg/g. The high adsorption performance can be attributed to the facts that the 3D interconnected porous network of the hydrogel allows As species to easily enter into the hydrogel, the quaternized P4VP chains provides more adsorption sites, Fe 3 O 4 NRs uniformly distributed in the internal cavity of the hydrogel significantly reduces the nanoparticle aggregation. The adsorption kinetics indicated that the adsorption of arsenic by the hydrogel was mainly chemisorption. The isotherm analysis revealed that the adsorption of arsenic by the hydrogel was principally monolayer adsorption on a homogeneous surface. Moreover, the as-prepared CNC-based polymer hydrogels exhibited good stability and reusability with negligible performance loss after five adsorption-desorption cycles. The novel FN@CP q P hydrogel demonstrates great potential as a cost-effective adsorbent for the removal of arsenic contaminants from wastewater.
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ACS Applied Materials & Interfaces
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2024
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IF 8.3
Wenqin Shao,Xutao Zhang,Xiao Liang,Wenting Tao,Meng Ma,Si Chen,Yanqin Shi,Huiwen He,Yulu Zhu,Xu Wang
Cellulose nanofiber (CNF) has been widely used as a flexible and lightweight polymer matrix for electromagnetic shielding and thermally conductive composite films because of its excellent mechanical strength, environmental performance, and low cost. However, the lack of flame retardancy seriously hinders its further application. Herein, renewable and biomass-sourced l-arginine (AR) was used to surface-modify ammonium polyphosphate (APP) and an environmentally friendly biobased flame retardant was synthesized by the coordination of zinc sulfate heptahydrate (ZnSO4·7H2O), which was named AAZ. AAZ was deposited on the surface of CNF by electrostatic adsorption and Zn2+ complexation. The biobased compatibilizer Triton X-100 was employed to assist the exfoliation of graphene nanoplatelets (GNPs) and their dispersion in the CNF matrix. Due to the formation of a dense lamellar layer resembling a shell structure, the CNF/GNPs composite films with a tensile strength of 52 MPa were obtained via vacuum-assisted filtration. Because the phosphorus-containing group produces a protective layer of PxOy compound and promotes the formation of a carbon layer by CNF and the combustion releases ammonia gas, the fire-resistant performance of the composite films was greatly improved. Compared with the pure CNF film, the composite film exhibits 33% reduction in PHRR value and 40% reduction in THR. In addition, the CNF/GNPs composite film with 20 wt % GNPs possessed high conductivity (2079.2 S/m) and electromagnetic interference (EMI) shielding effectiveness (37 dB). The ultrathin CNF/GNPs composite films have excellent potential for use as efficient flame retardant and EMI shielding materials.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2025
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IF 8.5
Yanping Liu,Ying Zou,Hong Hu,Hongxia Gao,Yuan Yuan,Mianhong Chen,Ruyi Li,Yaping Dai,Xiaobing Huang,Chenghui Zhang,Jihua Li,Wei Zhou
Natural essential oils, such as d -limonene, are frequently used as flavoring agents and fragrances in the food industry. However, their susceptibility to volatilization and chemical degradation poses challenges for widespread application. In this study, cellulose nanocrystals (CNCs) and cellulose nanofibers (CNFs) were used to stabilize palm oils (POs) with different melting points to prepare Pickering emulsions (PEs) for the encapsulation of d -limonene. The physicochemical properties, environmental stability, 3D printing performance, and retention of d -limonene were explored. It results indicated that CNFs stabilized PO emulsions exhibit a stronger gel network structure, particularly pronounced in high melting point PO. CNF-stabilized emulsions enhanced stability to pH changes, salt ion, and storage conditions, due to a greater gel structure. Notably, it should be noted that CNCs and CNFs slowed down the release of d -limonene in both fresh and heat-treated emulsions. Furthermore, CNCs and CNFs emulsions as 3D printing inks, ensure accurate and stable formation of target shapes. The volatilization of d -limonene during the process was effectively suppressed (<9 %). The lower release of d -limonene in CNF emulsions (<2.8 %) could be linked to the tight distribution of CNF particles between the oil/water interface and the droplets, which makes the emulsion more resistant to extrusion. This study provides valuable insights into the use of PEs for encapsulating flavor components in 3D printing applications.
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Aggregate
·
2024
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IF 13.9
Wenye Sun,Bing Tian,Bang An,Rui Teng,Mingcong Xu,Chunhui Ma,Zhijun Chen,Haipeng Yu,Jian Li,Wei Li,Siqi Huan,Shouxin Liu,Orlando J. Rojas
Circularly polarized luminescent materials find extensive applications in 3D displays, information encryption, and photoinduced supramolecular chirality. However, controlling the handedness of circularly polarized luminescence remains a significant challenge in advancing optical technologies. In this study, we present a Janus circularly polarized light emitter comprising a fluorescent film combined with chiral nematic cellulose with switchable chirality. The emitter achieves maximum luminescence dissymmetry factors (0.28 and −0.65) through mode switching. In addition, we show the emitter's versatility in inducing chiral helices in azobenzene polymers with varying polar groups, resulting in significant chiral signals. Importantly, the chirality of these polymers can be switched by altering the luminescence mode of the emitter. These results are expected to facilitate the efficient design of chiral luminescent materials and photoinduction devices.
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MATERIALS CHEMISTRY AND PHYSICS
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2024
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IF 4.3
Xueqing Shi,Lvye Yang,Jianfeng Yao
A new simple preparation method for water-in-salt-type cellulose hydrogels filled with ZnBr 2 is reported. The ZnBr 2 hydrogel electrolyte can be applied to zinc-ion hybrid supercapacitors and Zn–Br interfacial batteries. The water-in-salt ZnBr 2 hydrogel serves as a stable electrolyte for good electrochemical performance in zinc-ion hybrid supercapacitors without redox reactions and can participate in the charging/discharging process of the Zn–Br interfacial battery through the redox reaction of halogen anions. The assembled zinc-ion hybrid supercapacitor exhibits a specific capacitance of 241.8 F g −1 at 0.5 A g −1 . Furthermore, after a 10,000-cycle-long charging/discharging test at 5 A g −1 , the coulombic efficiency is found at nearly 100 %. The interfacial battery reaches the highest energy efficiency of 66 % at a current density of 3 mA cm −2 at 0–1.8 V and displays a good cycle life with an 88 % average coulombic efficiency at 3 mA cm −2 . This work expands the application of hydrogels and provides new possibilities for optimizing the high performance of electrolytes.
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CHEMICAL ENGINEERING JOURNAL
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2022
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IF 16.744
Zhen Lang,Yunjie Ju,Yonggui Wang,Zefang Xiao,Haigang Wang,Daxin Liang,Jian Li,Yanjun Xie
Switchable optical transparency is an intrinsic property for solid–liquid phase change materials (PCMs) during phase change processes. However, due to non-transparent porous confinement materials and core-shell structures, the synthesis of shape-stabled PCMs typically sacrifices their switchable optical transparency. Here, we present a copolymerization-induced shape-stabilization strategy that uses cellulose 10-undecenoyl ester (CUE) as a polymer-based crosslinker and a variety of alkyl acrylates (AAs) as phase change monomers to produce solid–solid phase change membranes (CUE-AAs) with high efficient thermal energy storage and excellent thermo-reversible optical transparency. These as-prepared CUE-AAs membranes present excellent switchable optical transparency from approximately below 5% to over 90% during phase change processes, and the responsive temperature of the transparency could be tailored in the range of 23–67 °C by using different AAs. Furthermore, three kinds of n-alkanes including hexadecane, octadecane, and docosane were physically entrapped in the CUE-AAs cross-linked networks to enhance the thermal energy storage performance, leading to a maximum melting enthalpy of up to 166.5 J/g. Moreover, the introduction of surface modified antimony-doped tin oxide nanoparticles significantly improved the light-to-thermal conversion effect, endowing the resulted membranes with high potential in application as thermal management material. Thus, the diverse properties of these CUE-AAs based PCMs, such as excellent thermo-reversible optical transparency, high thermal energy storage performance, remarkable photo-thermal storage efficiency, and high thermal stability, made them suitable for a wide range of applications, including intelligent optical devices and solar energy storage devices.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2024
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IF 7.7
Qian Sun,Xielong Dong,Juan Xu,Ting Wang
The study aimed to develop a multifunctional wound dressing with enhanced antibacterial properties and wound healing promotion. The synthesis process involved preparing oxidized regenerated cellulose (ORC) following a modified procedure, synthesizing chitosan/silver nanoparticles (CS/Ag NPs) via an in-situ reduction method, and subsequently preparing ORC/CS/Lys@Ag NPs hydrogels. Characterization techniques including FTIR, XRD, SEM, and EDS were employed to analyze functional groups, lattice structure, morphology, and elemental composition. Gelation time, swelling behavior, water retention, mechanical properties, viscosity, self-healing capacity, rheological behavior, oxygen permeability, in vitro degradation, release of Ag + , and antibacterial properties were evaluated using various experimental methods. Results indicated that the novel wound dressing has the capability to evenly distribute Ag NPs to effectively counteract bacteria. It can maintain moist conditions for 86 h, resist a sturdy mechanical pressure of 11.3 KPa, and degrade by 11.045 % ± 0.429 within 8 h. Combining its efficient gas exchange abilities, self-repairing function, and biocompatibility, almost full recovery was observed in injured mouse skin within 13 days, highlighting its promising clinical utility.
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