JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·
IF 2.7
Jia-Lin Zhou,Yu-Qin Yang,Shuai Wang,Shanshan Zhang,Baiyu Jiang,Qian Li,Qiang Wu,Shi-Neng Li
As for cellulose-based aerogels, a feature of inadequate mechanics and easy-flammability seriously restricts their practical applications. To address this issue, herein a lightweight, mechanical elastic and flame-retardant phosphorylated lignin-based cellulose nanofiber (PLCNF-B) aerogel with the aid of boric acid was successfully obtained by freeze-drying method. Due to the uniform and tough network structure benefitting by strong hydrogen bond between phosphorylated fibers and boric acid, the resultant aerogel showed excellent mechanical performance, that is, high compressive strength of 8.9 kPa (strain: 50%) and outstanding cyclic reliability (remain 90% after 10 cycles). Meanwhile, PLCNF-B aerogel possesses highly improved flame-retardant property, that is, a high LOI value (up to 46%), significantly reduced peak heat release rate (11.2 W/g) and total heat release rate (0.47 kJ/g). Based on structural observation and analysis, the flame-retardant behavior should be attributed to the formation of PxOy/amorphous boron oxide protective layer, which is derived from the phosphorus containing group of PLCNF and boric acid. The splendid overall performance of aerogel material offers a potential material tactic for design and development of advanced bio-based aerogels for practical applications.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Xiaomeng Liu,Lang Wang,Ying Lei,Xiao Li,Chunzu Cheng,Leixin Yang,Long Jiao,Shuo Yang,Dengkun Shu,Bowen Cheng
Cellulose is considered an ideal material for flexible electronic humidity sensors due to its green renewable nature, rich surface groups and strong hydrophilicity. However, the traditional cellulose-based humidity sensor cannot simultaneously have wide detection range, high sensitivity and fast response time, which seriously hinder their development and application. Here, an ultrathin Lithium chloride (LiCl)/cellulose nanofiber membrane as moisture sensitive materials was prepared by one-step electrospinning and used to assemble a high-performance humidity sensor. N, N-Dimethylacetamide/Lithium chloride (DMAc/LiCl) solvent system was used to dissolve the cellulose, and DMAc volatilized into the air while LiCl remained in the cellulose nanofibers during the electrospinning process. LiCl as a highly moisture-sensitive inorganic salt has strong hydrophilicity and enhances the moisture sensing detection limit of cellulose fiber (especially under low humidity conditions), thus giving the cellulose moisture sensor excellent sensitivity (up to 4191 %) and a wide detection range (5–98 % RH). The nanometer size of cellulose fibers, the extremely low thickness and large pores of cellulose membranes accelerate the mass exchange of moisture between the air and the membrane, thus giving cellulose humidity sensor a fast response/recovery time (99/110 s) and low hysteresis (2.9 %). Moreover, the performances of humidity sensors didn’t degrade even after being subjected to long-term application (>30 days), high/low temperatures (73.6/0.1 ℃) and thousands of bending cycles. The proposed LiCl/cellulose nanofiber humidity sensor brings innovative solutions for the design of cellulose based sensor with great potential for use in non-contact humidity detection, respiratory monitoring and sleep apnea detection applications.
研究领域:
材料科学
·
电子工程
·
绿色化学
✓ 已验证
产品关联
DOI
高影响因子
CARBOHYDRATE POLYMERS
·
2018
·
IF 5.158
Xiaohe Li,Yongzhuang Liu,Yanyan Yu,Wenshuai Chen,Yixing Liu,Haipeng Yu
Given its health benefits to the human body, quercetin (QT) offers promising applications in the healthcare food and pharmaceutical industries. However, the instability, low water solubility and low bioavailability of QT remain to be solved. In this paper, cellulose nanofiber (CNF) was used as an effective nanoscale carrier to alleviate these problems. By adjusting the solvent composition ratio and processing method, QT was optimally immobilized on CNF surfaces and was eventually encapsulated in the CNF matrices, forming a CNF/QT nanoformulation. A high loading capacity of 78.91% and encapsulation efficiency of 88.77% were achieved simultaneously. The nanoformulation exhibited better dietary performance and antioxidant activity than raw QT. Moreover, sustained release of QT was demonstrated in vitro. These results reveal that CNF is an ideal natural nanoscale dietary carrier and offers high encapsulation efficiency for healthcare supplementation. This work also provides a promising nanoformulation candidate for managing sustained antioxidant requirements.
研究领域:
食品科学
·
药学
·
材料科学
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Bin Wen,Zhongyu Yan,Jiahao Feizheng,Yike Huang,Chian Fang,Sihan Zhao,Jing Li,Daliang Guo,Huifang Zhao,Lizheng Sha,Qianyu Sun,Yinchao Xu
In this study, a brand-new, easy, and environmentally friendly approach for chemically functionalizing 2,2,6,6-tetramethylpiperidinyloxyl radical (TEMPO)-oxidized cellulose nanofiber (TOCNF) to produce modified cellulose nanofiber (octadecylamine-citric acid-CNF) was proposed. Effects of octadecylamine (ODA)/TOCNF mass ratio on the chemical structure , morphology, surface hydrophobicity and oleophobicity were studied. According to Fourier transform infrared spectroscopy (FTIR) analysis, ODA was successfully grafted onto the TOCNF by simple citric acid (CA) esterification and amidation reactions. Scanning electron microscopy (SEM) showed that a new rough structure was formed on the ODA-CA-CNF surface. The water contact angle (WCA) and the castor oil contact angle (OCA) of the ODA-CA-CNF reached 139.6° and 130.6°, respectively. The high-grafting-amount ODA-CA-CNF was sprayed onto paper, and the OCA reached 118.4°, which indicated good oil-resistance performance. The low-grafting-amount ODA-CNF was applied in a pH-responsive indicator film, exhibiting a colour change in response to the pH level, which can be applied in smart food packaging. The ODA-CA-CNF with excellent water/oil-resistance properties and fluorine-free properties can replace petrochemical materials and can be used in the fields of fluorine-free oil-proof paper.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Lili Zhu,Hao Zhang,Zuming Hu,Junrong Yu,Yan Wang
To acquire excellent wave-absorbing materials with broadened applications, transition metal carbides (Ti 3 C 2 T x , MXene) have been the research focus. However, the high conductivity of MXene limits its electromagnetic wave (EMW) absorption capability; meanwhile, the inferior mechanical properties of MXene-based aerogels severely restrict their applications. Here, porous MXene (PMXene) nanosheets were prepared by hydrogen peroxide etching, which was then physically and chemically crosslinked with cellulose nanofibres (CNF) to successfully prepare PMXene/CNF composite wave-absorbing aerogels with excellent mechanical properties. PMXene/CNF aerogel achieved a minimum reflection loss (RL min ) of − 72.27 dB and an effective absorption bandwidth (EAB) of 5 GHz at a thickness of 1.63 mm without any magnetic component. The aerogels exhibited excellent environmental stability at a density of 12.5 mg/cm 3 , including fatigue resistance (100 compression cycles, 0.075 energy loss efficiency) and low-temperature resistance. Refining the mechanical properties exploits the aerogel’s potential for motion monitoring and electronic skin applications. In addition, the aerogels integrate properties such as water–oil separation, photothermal conversion, and thermal insulation (thermal conductivity of 0.045 W/(m-K)). Therefore, multifunctional PMXene/CNF aerogels have a broad potential for future application in the defence industry, electronic devices, and smart wearable fields.
研究领域:
材料科学
·
电磁学
·
环境科学
·
机械工程
✓ 已验证
产品关联
DOI
高影响因子
CELLULOSE
·
2025
·
IF 4.8
Wu Xiaoxu,Liu Miao,Xie Linlin,Duan Yumin,Shen Kai,Hu Min,Li Zijun,Li Zhi
Lightweight, biodegradable multifunctional cellulose nanofiber (CNF) aerogel shows great potential in the fields of thermal insulation, electronic equipment and oil contaminant removal. However, its high fire risk and poor mechanical performance severely limit its extensive application. In this work, CNF aerogel with improved flame retardant and mechanical properties was successfully prepared by incorporating sepiolite (SEP) via an ice template-assisted strategy. The obtained results showed that the thermal stability and flame retardancy of CNF/SEP (CS) aerogel were significantly enhanced. For instance, the peak of heat release rate and total heat release of CS 2.5 with a mass ratio of SEP to CNFs of 5: 1 were reduced by 72.6% and 47.2%, respectively, relative to those of pure CNF aerogel. Furthermore, its limiting oxygen index value exceeded 70%, and reached UL-94 V-0 rating. Moreover, the CS 2.5 composite showed a high compressive strength of 121.1 kPa. Therefore, this study provides a facile strategy for fabricating fire safe and mechanically robust CNF aerogels, which is expected to broaden their application scope.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Manjila Adhikari,Omar Mohammad Atta,Mohmed Sobhy Kishta,Mostafa Maboruk,Zhijun Shi,Guang Yang
The demand for advanced biomaterials in medical treatments is rapidly expanding. To address this demand, a nanocomposite of cellulose nanofiber (CNF) with chitosan (Ch) and graphene oxide (GO) was developed for burn wound treatment. The CNF-Ch-GO nanocomposites were characterized and their biological properties were evaluated. Microscopic images showed a uniform distribution of CNF, Ch, and GO with a porous structure. ATR-FTIR and XRD analyses confirmed the chemical structures, while a thermogravimetric study confirmed the stability of CNF-Ch-GO nanocomposite under a N 2 atmosphere. The synthesized CNF-Ch-GO nanocomposite exhibited rapid absorption, absorbing 1781.7 ± 53.7 % PBS in 2 min. It demonstrated a Young's modulus of 11.90 ± 0.06 MPa in a hydrated condition, indicating its mechanical stability in water. Furthermore, it displayed excellent biocompatibility and hemocompatibility with 96.23 ± 12.21 % cell viability and 0.21 ± 0.08 % of hemolysis. Additionally, the blood clotting index of CNF-Ch-GO was comparable to that of standard dressing gauze. To enhance antimicrobial efficacy, CNF-Ch-GO was conjugated with lysozyme. This biotic and abiotic conjugation resulted in 92.17 % ± 3.02 % and 94.99 ± 2.1 % eradication of Escherichia coli and Staphylococcus aureus , respectively. The enhanced antimicrobial properties, biocompatibility, and mechanical stability of the superabsorbent CNF-Ch-GO nanocomposite indicate its significant potential for advanced burn wound healing applications.
研究领域:
生物材料学
·
医学工程
·
伤口护理
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CELLULOSE
·
2024
·Vol. 31
·期 10
·6421-6433
·
IF 4.9
Du Hong,Cheng Zhengbai,Liu Yingying,Hu Mengxin,Xia Mingfeng,Sun Xianhao,Lin Zhaoyun,Liu Hongbin
The toughness and adhesiveness of composite hydrogels play an important role in the field of wearable sensors, where they are used due to their remarkable flexibility and diverse specialized properties. In this work, a composite hydrogel with strong toughness and high adhesion for human motion detection and wireless sensing was obtained. Polydopamine (PDA)-modified cellulose nanofibers (PCNFs) were introduced into a polyvinyl alcohol (PVA) and polyacrylamide (PAM) network, resulting in the fabrication of a PCNF/PVA-PAM composite hydrogel. Lithium chloride served as a crosslinking agent and provided conductive ions, and the PCNFs provided the composite hydrogel with strong toughness and adhesion abilities. The compression strength of the obtained PCNF/PVA-PAM composite hydrogel was 1.1 MPa, and its adhesion strength to glass was 63.8 kPa. Moreover, the composite hydrogel exhibited good anti-freezing properties. The compression sensitivity of the composite hydrogel was 1.29, and it still maintained stability even after 500 testing cycles. The strain-sensing abilities of the composite hydrogel were satisfactory for different human body parts. This composite material holds great promise in the fields of wearable devices and wireless signal transmission.
研究领域:
材料科学
·
生物医学工程
·
传感器技术
✓ 已验证
产品关联
DOI
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2024
·
IF 5.6
Xingya Kang,Baoying Wang,Yanhong Ding,Li Xu,Yan Zhang
In order to solve the drawbacks of carboxylated cellulose nanocrystals (CNCs) prepared by critic acid (CA) hydrolysis method, such as low yield and low esterification degree, herein, ball milling assisted CA hydrolysis method was applied to obtain carboxylated CNCs and cellulose nanofibers (CNFs) with fine and uniform size, high yield and carboxyl content, good crystallinity, and good thermal stability. It was discovered that the diameter of CNCs and CNFs were decreased and the size uniformity was improved. The yield of CNCs was obviously improved to 39.8 % due to the promoted esterification reaction, which was 3.3 times of that without ball milling. Moreover, the carboxyl group content of CNCs and CNFs were improved to a maximum of 0.52 and 0.48 mmol/g, respectively. As ball milling progressing, more amorphous regions were destroyed and cellulose bundles were dissociated, resulting in CNCs and CNFs with high crystallinity. The thermal decomposition temperature of CNCs and CNFs were ranged from 317 to 331℃, which was higher than that had reported. This work provided an effective route for carboxylated CNCs with good yield, esterification degree and other performance, which was beneficial for the subsequent applications in the field of biomaterials.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
FOOD CHEMISTRY
·
2025
·
IF 9.8
Fuyuan Ding,Siman Long,Xiaowei Huang,Xin Wang,Roujia Zhang,Jiyong Shi,Yang Zou,Xiaobo Zou
In this study, the electrospun cellulose acetate (CA) nanofibrous films were hydrolyzed and then dyed with a synthetic dye of 1-hydroxy-4-[4-(ethylsulfurate sulfonyl)-phenylazo]-naphthalene (HESPN). The physicochemical properties of the dyed films were similar to the unmodified films. Due to the covalent bonds formed between dye and cellulose molecules, the dyed films showed high stability with almost no dye leakage in acidic solutions and minimal leakage (0.4 %) in alkaline solutions. In addition, the dyed films exhibited rapid responsiveness to ammonia gas and could transit from yellow to brown within 20 s due to the nanofibrous structure of the films and quick color change of the dye. The dyed films can be used to monitor the spoilage of shrimp with a color change from yellow to brown. The nanofibrous cellulose films dyed with HESPN can be potentially applied as indicators to be used in smart packaging.
研究领域:
食品科学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2024
·
IF 5.6
Wenxue Wang,Hui Cao,Rong Fan,Ming Zhu,Rui Zhang,Pengtao Liu
Metal-organic frameworks (MOFs) are porous hybrid materials made of metal and organic linkers. Combining MOFs with polymers enhances their performance and addresses the issue of low stability. In this study, a uniform nanoscale Eu(III)-based metal-organic framework (Eu-MOF) was synthesized and grown in situ on TEMPO(2,2,6,6-tetramethylpiperidinyl-1-oxide)-oxidized cellulose nanofibrils (TOCNF), resulting in the formation of Eu-MOF@TOCNF fluorescence films through vacuum filtration. These films exhibited favorable mechanical properties, high transmittance, and stable fluorescence characteristics within the pH range of 3–11. The film produced the characteristic emission peak of Eu 3+ , recognized the selective quenching of Fe 3+ within 0–100μM, and displayed an inverse relationship between fluorescence intensity at 616 nm and Fe 3+ concentration. This approach holds significant promise for Fe 3+ detection in solutions and offers a novel strategy for developing highly efficient optical sensors based on fluorescence specificity.
研究领域:
材料科学
·
化学
✓ 已验证
产品关联
DOI
高影响因子
COMPOSITES COMMUNICATIONS
·
2025
·
IF 7.7
Min Zhang,Haizhen Chen,Yu He,Shuohang Li,Junchi Quan,Zhenzhen Wei,Yan Zhao
Cellulose has gained popularity in the energy and chemical industries due to its abundant resources, low cost, and biodegradability. However, traditional cellulose paper exhibits deficiencies in strength, flame retardancy, and hydrophobicity, thereby limiting its application in packaging materials as well as posing safety hazards. In this work, multifunctional cellulose nanofiber composite papers (AS-LAB) were fabricated via a combination of charge difference design and vacuum filtration technology, followed by the double coating of mixed micro-scaled and nano-scaled particles. The strength of the AS-LAB composite paper was enhanced by 2.2 times compared to that of pure cellulose paper, attributed to the multiple interactions (including hydrogen bonding, covalent cross-linking, and electrostatic attraction) between the components and the perfect match of particles with different scales. Moreover, the simultaneous utilization of different ammonium polyphosphates with high and low polymerization degrees offers the AS-LAB composite paper with remarkable flame retardancy, and the rough surface in the sandwich structure caused by the multiscale particles renders the composite paper with desirable hydrophobicity (water contact angle 138.1°) and self-cleaning properties. Therefore, the design and fabrication of cellulose nanofiber composite paper shed light on the paper performance improvement and suggest its potential application in the packaging field.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）