BIORESOURCE TECHNOLOGY
·
2025
·
IF 9
Xinyue Xu,Ying Xu,Jialong Wen,Tongqi Yuan
Lignin contains aromatic rings, phenolic hydroxyl, and methoxy groups that confer promising potential for sunscreen applications. However, traditional extraction methods often lead to structural condensation, thus limiting the functional utilization of lignin. Herein, we propose a strategy for simultaneous lignin extraction and in-situ modification using tannic acid (TA) as both a functionalizing agent and a phenolic modifier. This approach enables efficient lignin isolation under mild conditions, while preserving reactive sites and enhancing multifunctional performance. Under optimized conditions (100 °C, 30 min), the pretreatment achieved a delignification efficiency of 89.1 %. The resulting TA-modified lignin (TA-Lig) exhibited excellent UV-blocking performance, antioxidant activity, tyrosinase inhibition, and favorable biocompatibility. Notably, incorporating 5 wt% TA-Lig into a commercial sunscreen (SPF 15) markedly enhanced the SPF to 145.3. This work demonstrates a sustainable extraction–modification strategy that yields multifunctional bio-based ingredients with strong potential for cosmetic applications.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2017
·
IF 2.843
Wei Fang,Sen Yang,Tong-Qi Yuan,Adam Charlton,Run-Cang Sun
Anionic, cationic, and nonionic surfactants with varying concentrations (0.2–1.2%) were introduced to neutralize beads on lignin nanofibers by decreasing the surface tension of spinning dopes. The surfactants used in this work were sodium dodecyl sulfate (SDS), N,N,N-trimethyl-1-dodecanaminium bromide (DTAB), and Triton X-100 (TX-100). The effects of viscosity, rheological properties, surface tension, and conductivity of the solutions on the morphology and physicochemical performances of fibers were investigated. As expected, the presence of certain amounts of surfactants eliminated the beads and resulted in the formation of smooth and bead-free fibers with small diameters. Furthermore, the gravimetric capacitance of the carbon mat with 1% SDS was slightly improved from 66.3 to 80.7 F g–1. The results suggested that the surfactants benefit from the electrospinning of lignin and allow for the control over nanofiber morphology without compromising their performance as supercapacitor electrodes.
✓ 已验证
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Linlin Liang,Meijiao Peng,Hui Xu,Zijun Wu,Baojie Liu,Chengrong Qin,Chen Liang,Caoxing Huang,Shuangquan Yao
Polyethersulfone (PES) membranes are widely utilized in oil-water separation applications owing to their exceptional chemical and thermal stability. However, their inherent hydrophobic nature renders them susceptible to fouling and blockage by oily substances in practical applications. In this study, aminated lignin (AML), containing hydrophilic amino groups and exhibiting good compatibility with PES, was incorporated into PES membranes to prepare AML/PES composite membranes. The physical and chemical properties, oil-water separation capacity, and anti-fouling performance of the composite membranes were systematically analyzed. Under optimal process conditions (AML concentration 2.0 wt%, PES concentration 16 wt%, temperature 40 °C), the AML/PES membrane exhibited markedly improved performance; the porosity reached 75.67 % and the hydrophilic contact angle decreased to 53.4°. Furthermore, pure water flux recovery rate FRR significantly increased from 65.51 % without AML to 79.22 %, while the resistance to irreversible contamination decreased to 26.47 %, and the resistance to reversible contamination increased to 29.75 %. After three testing cycles, the recovery rate of pure water flux declined by only 9.38 %, indicating that the composite membrane has excellent anti-pollution performance and good cycling stability. Our results highlight a promising strategy for the high-value utilization of lignin, providing a new type of high-performance membrane material solution for the field of oily wastewater treatment.
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Qiaolong Zhai,Jie Li,Kangze Miao,Shaoqi Yang,Yanju Lu,Qian Guan,Junming Xu,Jianjun Hu,Shuheng Zhao
The efficient extraction of lignin with preserved native structure and light color remains a critical challenge in biomass refining. Here, we present a novel strategy for lignin structural stabilization and chromophore suppression using a thioglycolic acid/glycolic acid (TgA/GA) cosolvent system with moderate acidity. This approach achieved efficient delignification (>83 %) and yielded lignin with near-native structural integrity and high whiteness. The TgA/GA cosolvent functioned on the lignin through a dual mechanism: quenching benzylic carbocations to protect β-O-4 linkages against condensation, and reducing chromophores in situ to inhibit their formation. The extracted lignin retained 59.0 β-O-4 linkages per 100 C 9 units—approaching native levels—allowing efficient catalytic depolymerization to monophenols (>22 wt% yield). It simultaneously exhibited high whiteness (L* > 80, ΔE < 18) due to the suppression of chromophores such as quinone-type, demonstrating suitability for applications such as sunscreens. Simultaneously, the co-produced cellulose fraction, devoid of condensed lignin particles, retained a light color and exhibited high enzymatic digestibility (>88 % glucose yield). This work presented an effective strategy for co-producing high-yield, high-whiteness, structurally preserved lignin and highly reactive cellulose from lignocellulose, paving the way for value-added lignin utilization in optically sensitive applications.
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Liyang Hu,Chao Wang,Lupeng Shao,Xingxiang Ji,Guihua Yang,Baozhong Lü,Feng Xu,Jiachuan Chen
Achieving high temperature phosphorescence (HTP), particularly using biomass as precursors, is intriguing but faces significant challenges due to the violent non-radiative decay. Here, lignin is converted to carbon dots (L-CD) in the urea-boric acid (UB) matrix through an in situ double matrix confinement strategy. The rigid UB matrix can provide multiple chemical and non-covalent interactions with L-CD, thus the triplet excitons are protected against quenching by strong confinement effect. The L-CD-UB demonstrates outstanding room temperature phosphorescence (RTP) lifetime of 1256.99 ms and quantum yield of 7.43% at ambient environment. Because of the high stability of the triplet excitons and reduced energy gap between singlet state and triplet state, the L-CD-UB shows thermally activated delayed fluorescence (TADF) and high temperature phosphorescence dual emission phenomenon, with a striking phosphorescence lifetime of 304.33 ms at 453 K. The work provides an effective method to achieve HTP of lignin and affords a promising eco-friendly material for high temperature anti-counterfeiting, encryption and smart sensing.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2026
·
IF 3.1
Wang Ziwei,Tong Yuxing,Liu Zhichang,Yu Yang,Wang Yixin,Zhang Lei,Gao Song,Feng Xiong,Lei Wang
The growing demand for sustainable polymeric materials has driven efforts to replace petroleum-based polyols in rigid polyurethane foams (RPFs) with renewable alternatives. Lignin, owing to its abundant hydroxyl groups and aromatic structure, is considered a promising candidate; however, its intrinsic rigidity and structural heterogeneity often limit its incorporation and compromise foam performance. In this study, industrial Kraft lignin (KL) was liquefied using 1,4-butanediol and employed as a bio-based polyol for RPF fabrication. Process optimization demonstrated that catalyst, surfactant, and water contents played critical roles in regulating foam density and compressive strength. To enhance mechanical performance, microcrystalline cellulose (MCC) derived from tobacco stems was introduced as a reinforcing phase. At an MCC loading of 5 wt%, the compressive strength at 10% strain increased by 34%, from 171.6 ± 7.5 to 229.7 ± 12.6 kPa, with enhancement up to 50% strain, while the apparent density increased slightly from 85.4 ± 2.0 to 93.5 ± 2.6 kg·m −3 . MCC incorporation also reduced the water contact angle from 110.3° to 100.0°. Morphological analysis revealed that increased system viscosity during foaming led to gas entrapment and larger, more irregular cellular structures. Overall, this work demonstrates an effective strategy for valorizing industrial byproducts into high-performance, sustainable RPFs.
✓ 已验证
产品关联
DOI
高影响因子
Polymers
·
2026
·Vol. 18
·期 2
·286
·
IF 4.9
Jianan Hu,Yunni Zhan,Xuelian Zhou
In order to improve the utilization of alkali lignin (AL) as an effective component for ultraviolet (UV) shielding, demethylation and acetylation modification were carried out to improve the UV absorption performance of lignin. Then, lignin-based sunscreens were successfully prepared by mixing the modified lignin and commercial cream without UV shielding ingredients. The modified alkali lignin was comprehensively characterized in terms of its molecular weight, functional groups and structural properties by GPC, UV spectroscopy and 31 P NMR. The results showed that the Mw of all three lignin feedstocks (AL, AL MeOH and AL Acetone ) was decreased with prolonged demethylation time. Compared to the original feedstock, demethylated AL had a darker color and improved UV absorption performance due to the increased phenolic hydroxyl content (approximately 4.35 mmol/g). 31 P-NMR spectra showed that the guaiacyl phenolic hydroxyl content decreased rapidly after acetylation, causing the sample color to become lighter. Among all lignin-based sunscreens, DAL Acetone achieved the highest SPF value of 11.23, a 69.4% increase over its pre-reaction level and a 7.58-fold enhancement compared to the original lignin. In summary, this study opens a promising avenue for repurposing industrial lignin as a sustainable biomaterial in high-value sectors like UV-blocking agents and cosmetic formulations.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Bioresources and Bioproducts
·
2026
·
IF 13
Huali Zeng,Linlin Liang,Liuli Zhu,Xianting Zeng,Yanling Bin,Renman Wu,Baojie Liu,Chengrong Qin,Shuangfei Wang,Shuangquan Yao
Hydroxyl functionalized additives (Ga-OHs) that can inhibit lignin re-polymerization have demonstrated significant potential in biomass resource conversion and utilization. However, the molecular mechanisms underlying this inhibitory effect remain poorly understood. This study systematically compares the lignin condensation inhibition capabilities of four hydroxyl functionalized additives with distinct functional group effects: salicylic acid, mannitol, 2-naphthol, and glycolic acid. Results indicate that lignin condensation inhibition is primarily associated with hydrogen bonding interactions formed between hydroxyl functionalized additives and oxygen containing functionalities on lignin side chains, while van der Waals interactions contribute as non-specific stabilizing contacts at the early stages. Rapid electron flow in short-chain compounds molecules stabilized the lignin structure. The strong hydrogen bond interaction between mannitol and oxygen groups in lignin branches (–80.38 kJ/mol) enhanced the stability of a separated lignin in a strong acidic environment, which resulted in a high β -O-4 content (up to 47.12 per 100 aromatic units). Here, we comparatively screened hydroxyl functionalized additives with different structures under dilute acid pretreatment and linked the quantitative outcomes of lignin condensation inhibition to density functional theory (DFT) validated noncovalent interactions. This work provides insight into the separation of low condensation lignin and informs the screening of additives with lignin condensation inhibition potential.
✓ 已验证
产品关联
DOI
高影响因子
iScience
·
2022
·
IF 6.107
Zipeng Li,Di Xie,Weizhi Zhu,Hongjie Wang,Tulong Ouyang,Jianping Sun,Yiqiang Wu,Fangchao Cheng
Nanocrystalline cellulose (NCC) preparation in an integrated fractionation manner is expected to solve the problems of low yield and environmental impact in the traditional process. An integrated fractionation strategy for NCC production from wood was developed through catalytic biomass fractionation, the partial dissolution of cellulose-rich materials (CRMs) in aqueous tetrabutylphosphonium hydroxide, and short-term ultrasonication. The presented process could tolerate a high CRM lignin content of 21.2 wt % and provide a high NCC yield of 76.6 wt % (34.3 wt % of the original biomass). The increase in the CRM lignin content decreased the NCC yield, facilitated the crystal transition of NCC from cellulose I to cellulose II, and showed no apparent effects on the NCC morphology. A partial/selective dissolution mechanism is proposed for the presented strategy. This study provided a promising efficient fractionation-based method toward comprehensive and high-value utilization of lignocellulosic biomass through effective delignification and high-yield NCC production.
✓ 已验证
DOI
PubMed
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2022
·
IF 6.449
Shuo Wang,Xu Chen,Yida Yin,Hao Meng,Yonggui Wang,Zefang Xiao,Haigang Wang,Daxin Liang,Yanjun Xie
Dye removal from wastewater via adsorption constitutes an active area of research in effluent treatment. For this purpose, superadsorbent hydrogels have emerged as a promising tool; however, large adsorption capacities for various dyes are still required. As a novel adsorbent, lignin is attracting attention owing to its abundant sources and environmental friendliness; unfortunately, its hydrophobicity limits its practical application. Herein, lignin was directly esterified using methacrylate anhydride, itaconic anhydride, or maleic anhydride to produce three lignin esters (LEs) with different hydrophilic properties. These LEs were subsequently used to copolymerize with acrylic acid, yielding three types of hydrogels. Because of high water-absorbing capacity of hydrogels, the highest adsorption capacity reported to date for methylene blue was obtained (2445 mg g −1 ) using lignin-based adsorbents. The type of LEs, the reactant concentrations and ratios, and the pH of the soaking solution affected the properties and hence the adsorption capacities of the hydrogels. The adsorption process was fitted with a pseudo-second-order model and the Langmuir adsorption isotherm model. This study reveals the synergistic adsorptive action of lignin and confirms the potential of LE–acrylic acid hydrogels for removing methylene blue from sewage.
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2014
·
IF 3.096
Xiaohuan Liu,Yuzhi Xu,Juan Yu,Shouhai Li,Jifu Wang,Chunpeng Wang,Fuxiang Chu
Three kinds of acrylic monomers (2,2,3,4,4,4-hexafluorobutyl methacrylate (HFBMA), methyl methacrylate (MMA) and butyl acrylate (BA)) were utilized to modify the lignin (BBL) by “grafting from” free radical polymerization (FRP), respectively. Calcium chloride/hydrogen peroxide (CaCl 2 /H 2 O 2 ) was used as initiator. Effects of monomer type and concentration, initiator concentration and polymerization time on grafting from BBL were studied. Grafting of poly (acrylic monomers) onto BBL was verified by the following characterizations and this synthesis method was found to be high efficient and selective for grafting polymerization of BBL. The presence of the BBL moiety in the backbone also resulted in higher glass transition temperature compared with the homopolymer of each monomer, and some modified copolymers also improved its thermal stability. All modifications made BBL more hydrophobic and the static contact angles of these modified copolymers were above 80°. XPS analysis revealed that the surface of these modified BBL copolymers were dominated by acrylate monomer moiety. Additionally, the BBL- g -PBA copolymers can be used as dispersion modifiers in PLA-based materials to enhance UV absorption.
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2019
·
IF 4.784
Junwang Zhang,Lili Song,Kunlan Li,Qingda An,Hao Ma,Liyu Yang,Ligang Wei
Water addition was found to enhance the thermal stability of alkylimidazolium–acetate ionic liquids (ILs). Especially in the case of high water content (30–50 wt%), few decomposition products can be observed in the 1 H NMR spectra even after treatment for 24 h at 150 °C. On the basis of this finding, lignin treatment of water and acetate IL mixtures (50–90 wt% IL content) were investigated at 150 °C. The addition of water, as opposed to pure IL treatment, can inhibit the lignin depolymerization into small fragments. Lignin degradation and the structure of regenerated lignin are more affected by cation types of ILs rather than the IL contents and pH values. In the case of 50–70 wt% 1-ethyl-3-methylimidazolium acetate–water system, the specific inter-unit linkages of lignin can be broken down, and regenerated lignin with a narrow polydispersity index (5.0–9.6) can be obtained.
研究领域:
绿色化学
·
生物质转化
·
高分子化学
·
离子液体化学
·
木质素化学
·
可持续材料
·
热化学转化
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）