Carbohydrate Polymers最新文献_第3页

Sodium alginate-based adsorbents for pesticide removal: Advances, mechanisms, and future perspectives 海藻酸钠基农药去除吸附剂：进展、机制和未来展望

IF 12.5 1区化学 Q1 CHEMISTRY, APPLIED

Carbohydrate Polymers

Pub Date : 2025-12-03 DOI: 10.1016/j.carbpol.2025.124783

Gaurav Sharma , Tongtong Wang , Yaksha Verma , Sen Wang , Pooja Dhiman , Junchao Jia

The pervasive presence of pesticides in aquatic environments poses a significant threat to both ecological and human health due to their persistence, toxicity, and bioaccumulative nature. Traditional remediation methods often face limitations in sustainability. Among alternative strategies, adsorption has emerged as a promising approach for pesticide removal because of its operational simplicity, scalability, and high selectivity. This review critically examines recent progress in the development of sodium alginate (SA)-based adsorbents for efficient remediation of pesticide-contaminated water. SA, a natural, anionic polysaccharide derived from brown seaweed, offers tunable physicochemical properties, abundant functional groups, and excellent biocompatibility, making it an attractive matrix for adsorbent design. Emphasis is placed on the molecular design, functionalization strategies, and hybridization of SA-based hydrogels with inorganic fillers (e.g., metal oxides), carbonaceous materials (e.g., biochar), and magnetic nanoparticles to enhance adsorption efficiency, specificity, and reusability. Mechanistic insights into pesticide binding through electrostatic interactions, hydrogen bonding, π–π stacking, cation exchange, and metal–ligand complexation are systematically discussed. Collectively, this work provides a holistic and mechanistically grounded framework for understanding the design principles and application potential of SA-based materials. Finally, future opportunities for developing stimuli-responsive, multifunctional, and field-deployable alginate-based systems are proposed, highlighting their role in advancing sustainable water purification technologies.

农药在水生环境中的普遍存在，由于其持久性、毒性和生物蓄积性，对生态和人类健康构成了重大威胁。传统的修复方法往往面临可持续性的限制。在替代策略中，吸附因其操作简单，可扩展性和高选择性而成为一种有前途的农药去除方法。本文综述了海藻酸钠（SA）吸附剂在农药污染水的有效修复中的最新进展。SA是一种从褐藻中提取的天然阴离子多糖，具有可调节的物理化学性质、丰富的官能团和良好的生物相容性，是一种有吸引力的吸附剂设计基质。重点放在分子设计、功能化策略和sa基水凝胶与无机填料（如金属氧化物）、碳质材料（如生物炭）和磁性纳米颗粒的杂交上，以提高吸附效率、特异性和可重复使用性。通过静电相互作用、氢键、π -π堆叠、阳离子交换和金属配体络合，系统地讨论了农药结合的机理。总的来说，这项工作为理解sa基材料的设计原则和应用潜力提供了一个整体的、机械的基础框架。最后，提出了未来发展刺激响应、多功能和可现场部署的海藻酸盐系统的机会，强调了它们在推进可持续水净化技术方面的作用。

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引用次数: 0

Design of functional hydrogel beads based on polysaccharide-encapsulated Ganoderma lucidum spores for stability and targeted gastrointestinal delivery of protein–spore complex 基于多糖包封灵芝孢子的功能性水凝胶珠的设计，用于蛋白质-孢子复合物的稳定性和靶向胃肠道递送

IF 12.5 1区化学 Q1 CHEMISTRY, APPLIED

Carbohydrate Polymers

Pub Date : 2025-12-03 DOI: 10.1016/j.carbpol.2025.124762

Longqin Li , Ang Ma , Jiang Ni , Ruixing Chen , Junzhe Zhang , Zipeng Gong , Hai-Ning Lyu

Oral delivery of protein-based therapeutics and nutraceuticals is often limited by enzymatic degradation and structural instability in gastrointestinal environments, underscoring the need for safe and biocompatible carriers with tailored release profiles. In this study, Ganoderma lucidum spores (GLS) were designed as natural porous scaffolds for loading bovine serum albumin (BSA) to form BSA–GLS complexes, which were subsequently encapsulated within three edible polysaccharide matrices—chitosan, alginate, and pectin—to fabricate dual-layer hydrogel beads with differentiated release behaviors. All beads exhibited millimeter-scale spherical morphology with distinct microarchitectures: compact (chitosan), dense yet porous (alginate), and lamellar (pectin). Distinct release profiles were observed: chitosan beads, characterized by high hardness and cohesiveness, favored gastric-targeted release; alginate beads showed superior mechanical integrity and gradual intestinal release; while pectin beads resisted gastric erosion but enabled rapid, near-complete release under intestinal conditions. All formulations maintained over 90 % protein integrity during fabrication and 60 days of storage at 4 °C, confirming effective stabilization. This study presents the first demonstration of GLS–polysaccharide hybrid beads as a food-grade, dual-layer delivery platform for stabilizing and delivering protein cargos across different gastrointestinal environments.

基于蛋白质的治疗药物和营养保健品的口服递送通常受到胃肠道环境中酶降解和结构不稳定的限制，这强调了对具有定制释放谱的安全和生物相容性载体的需求。本研究将灵芝孢子（GLS）设计为天然多孔支架，用于装载牛血清白蛋白（BSA）形成BSA - GLS复合物，随后将其包裹在壳聚糖、海藻酸盐和果胶三种可食用多糖基质中，制备具有不同释放行为的双层水凝胶珠。所有微珠都呈现毫米级的球形形态，具有不同的微结构：致密（壳聚糖），致密但多孔（海藻酸盐）和层状（果胶）。壳聚糖微球具有较高的硬度和粘性，有利于胃靶向释放；藻酸盐微球具有良好的机械完整性和逐渐的肠道释放；而果胶珠可以抵抗胃糜烂，但在肠道条件下可以快速，几乎完全释放。所有配方在制作过程中都保持了90%以上的蛋白质完整性，并在4°C下保存了60天，证实了有效的稳定性。本研究首次展示了gls -多糖混合微球作为食品级双层输送平台，用于在不同胃肠道环境中稳定和输送蛋白质货物。

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引用次数: 0

3D-printing of hierarchical porous monoliths using emulsion gels stabilized by lignin-containing cellulose nanofibrils for thermal insulation 用含木质素的纳米纤维素稳定的乳液凝胶进行分层多孔整体体的3d打印

IF 12.5 1区化学 Q1 CHEMISTRY, APPLIED

Carbohydrate Polymers

Pub Date : 2025-12-03 DOI: 10.1016/j.carbpol.2025.124787

Chuhang Liu , Xiaojie Shi , Bo Lin , Zekun Song , Feng jiang , Mei-Chun Li , Chaozheng Liu , Changtong Mei

3D printing of cellulose-based porous materials with tailored architecture is of significant interest for advanced thermal insulation applications. However, most existing approaches lack internal hierarchical porosity, thereby limiting their insulation efficiency. Here, we propose an emulsion gel ink strategy based on high internal phase Pickering emulsions (HIPPEs) stabilized by lignin-containing cellulose nanofibrils (LCNFs) and reinforced with sodium alginate (SA). This approach integrates emulsion templating with direct ink writing (DIW), enabling simultaneous control of macroscopic geometry and microscopic pore structure. LCNFs with tunable lignin content and surface charge effectively stabilize oil–water interfaces, while SA provides a viscoelastic matrix, ensuring high printability. After freeze-drying, the printed porous monoliths exhibit low density (~17.7 mg·cm⁻³), high porosity (> 98 %), and hierarchical pores templated by emulsified droplets and LCNF-SA network. The resulting structures combine excellent mechanical resilience and low thermal conductivity (~0.031 W·m⁻¹·K⁻¹). This work provides a scalable route to bio-based 3D-printed porous materials with programmable porosity and multifunctional performance.

具有定制结构的纤维素基多孔材料的3D打印对于高级隔热应用具有重要意义。然而，大多数现有的方法缺乏内部分层孔隙度，从而限制了它们的绝缘效率。在这里，我们提出了一种基于高内相皮克林乳液（hipes）的乳液凝胶墨水策略，该乳液由含木质素的纤维素纳米纤维（LCNFs）稳定，并用海藻酸钠（SA）增强。该方法将乳液模板与直接墨水书写（DIW）相结合，可以同时控制宏观几何形状和微观孔隙结构。具有可调木质素含量和表面电荷的LCNFs有效地稳定了油水界面，而SA提供了粘弹性基质，确保了高印刷性。经冷冻干燥后，打印出来的多孔整体具有低密度（~17.7 mg·cm−3）、高孔隙率（> 98%）、由乳化液滴和LCNF-SA网络模板化的分层孔结构。所得结构结合了优异的机械弹性和低导热系数（~0.031 W·m−1·K−1）。这项工作为具有可编程孔隙度和多功能性能的生物基3d打印多孔材料提供了一条可扩展的途径。

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引用次数: 0

Synergistic role of chitosan and carboxymethyl chitosan in regulating phase maturation and crystallinity of biomimetic calcium phosphate: From precursors to apatite 壳聚糖和羧甲基壳聚糖在调节仿生磷酸钙相成熟和结晶度中的协同作用：从前体到磷灰石

IF 12.5 1区化学 Q1 CHEMISTRY, APPLIED

Carbohydrate Polymers

Pub Date : 2025-12-01 DOI: 10.1016/j.carbpol.2025.124763

Krzysztof Stafin , Paweł Śliwa , Marek Piątkowski , Dalibor Matysek

A polyelectrolyte matrix composed of polycationic chitosan (CS) and polyanionic carboxymethyl chitosan (CCS) directs the formation of low-crystalline calcium phosphate (CaP) at an early stage of mineral maturation, yielding apatite-rich phases containing trace amounts of carbonate. Owing to its structural resemblance to bone apatite and intrinsic biocompatibility, the CS–CCS matrix serves as a promising template for biomimetic mineralization. To elucidate its role, a combined theoretical and experimental approach investigates CaP formation at both the prenucleation and crystal growth stages. Molecular dynamics simulations indicate that protonated CS and CCS chains stabilize interactions between calcium (Ca²⁺) and phosphate (Pi) ions at pH 8.0, promoting the formation of ionic assemblies with Ca/P ratios of 1.67 and 1.50 – values characteristic of apatite precursors. Experimental analyses (XRD, ATR-FTIR) confirm that the CS and CCS matrices guide mineral maturation and modulate the crystallinity of biphasic CaP composed of hydroxyapatite and apatite-like octacalcium phosphate. CS promotes apatite formation, whereas CCS induces a transition toward low-crystalline phases. When combined, they exhibit a synergistic effect, resulting in a higher content of the apatite phase than observed with either polysaccharide alone. Morphological differences in CaP particles formed with CS, CCS, and their combination are further confirmed by SEM and DLS analyses. This study reconstructs the dual pathway of CaP mineralization, in which chitosan-based matrices direct ion assembly toward either apatite or apatite-like phases via the classical and nonclassical mechanisms. These findings offer a mechanistic foundation for designing bone-inspired materials from carbohydrate polymers.

由聚阳离子壳聚糖（CS）和聚阴离子羧甲基壳聚糖（CCS）组成的聚电解质基质在矿物成熟的早期阶段指导低晶磷酸钙（CaP）的形成，产生含有微量碳酸盐的富磷灰石相。CS-CCS基质具有与骨磷灰石相似的结构和内在的生物相容性，是一种很有前途的仿生矿化模板。为了阐明其作用，采用理论和实验相结合的方法研究了预成核和晶体生长阶段CaP的形成。分子动力学模拟表明，质子化的CS和CCS链稳定了pH 8.0下钙（Ca2+）和磷酸盐（Pi）离子之间的相互作用，促进了钙/磷比分别为1.67和1.50的离子组合的形成，这是磷灰石前驱体的特征。实验分析（XRD, ATR-FTIR）证实，CS和CCS基质引导矿物成熟，并调节由羟基磷灰石和类磷灰石八磷酸钙组成的双相CaP的结晶度。CS促进磷灰石形成，而CCS诱导向低晶相转变。当它们结合时，它们表现出协同效应，导致磷灰石相的含量高于单独使用任何一种多糖所观察到的含量。SEM和DLS分析进一步证实了CS、CCS及其组合形成的CaP颗粒的形态差异。本研究重建了CaP矿化的双重途径，其中壳聚糖基基质通过经典和非经典机制将离子组装导向磷灰石或类磷灰石相。这些发现为从碳水化合物聚合物中设计骨激发材料提供了机制基础。

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引用次数: 0

A pH-responsive drug delivery system based on phenylboronic acid-conjugated dextran hydrogel for doxorubicin release via dynamic boronate ester bonds 基于苯硼酸缀合右旋糖酐水凝胶的ph响应药物递送系统，通过动态硼酸酯键释放阿霉素

IF 12.5 1区化学 Q1 CHEMISTRY, APPLIED

Carbohydrate Polymers

Pub Date : 2025-12-01 DOI: 10.1016/j.carbpol.2025.124774

Yuqi Lu, Longyu Deng, Chunfeng Yin, Jingqin Yang, Shaoyun Shan, Hongying Su

Stimuli-responsive drug carriers based on dynamic covalent bonds, particularly boronate esters, have attracted significant attention for their ability to enable targeted release in specific microenvironments. In this study, an intelligent dextran-based hydrogel was developed through the Hantzsch multicomponent cross-linking strategy integrated with pH-sensitive boronate ester bonding. This hydrogel (DHPD-FPBA) features a dual-network architecture comprising rigid 1,4-dihydropyridine (DHP) covalent networks and dynamic boronate ester cross-links, achieved by employing 4-formylphenylboronic acid (FPBA) as a functional aldehyde component in the Hantzsch reaction. Comprehensive structural and morphological analyses confirmed successful formation, tunable cross-linking density, pronounced pH-dependent swelling and mechanical behavior with rapid framework disintegration under acidic conditions (pH 5.0). Doxorubicin (DOX) was efficiently loaded via boronate ester conjugation and released in a pH-responsive manner, with over 65 % release within 48 h at pH 5.0 compared to less than 25 % at pH 7.4. The release kinetics, which adhered to the Peppas model, indicated a diffusion–erosion coupled mechanism. Furthermore, the hydrogels demonstrated high biocompatibility in cytotoxicity assays, and confocal microscopy revealed efficient cellular internalization of the released DOX. These results underscore the potential of DHPD-FPBA hydrogel as a promising platform for tumor-microenvironment-targeted drug delivery.

基于动态共价键的刺激反应性药物载体，特别是硼酸酯，因其在特定微环境中实现靶向释放的能力而引起了极大的关注。在本研究中，通过Hantzsch多组分交联策略结合ph敏感的硼酸酯键，开发了一种基于右旋糖酐的智能水凝胶。该水凝胶（DHPD-FPBA）具有双网络结构，包括刚性的1,4-二氢吡啶（DHP）共价网络和动态硼酸酯交联，通过在Hantzsch反应中使用4-甲酰苯基硼酸（FPBA）作为功能醛组分实现。综合结构和形态分析证实，在酸性条件下（pH 5.0），形成成功，交联密度可调，明显的pH依赖性膨胀和框架快速解体的力学行为。多柔比星（DOX）通过硼酸酯偶联有效加载，并以pH响应的方式释放，在pH 5.0下，48 h内释放超过65%，而在pH 7.4下，释放低于25%。释放动力学符合Peppas模型，表现为扩散-侵蚀耦合机制。此外，水凝胶在细胞毒性试验中表现出高生物相容性，共聚焦显微镜显示释放的DOX有效的细胞内化。这些结果强调了DHPD-FPBA水凝胶作为肿瘤微环境靶向药物递送平台的潜力。

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引用次数: 0

Highly sensitive, selective and reversible detection of Fe3+ ions based on elastic cellulose nanofibrils/chitosan composite modified with colorimetric and fluorescent probe 比色和荧光探针修饰弹性纤维素纳米纤维/壳聚糖复合材料对Fe3+离子的高灵敏度、选择性和可逆性检测

IF 12.5 1区化学 Q1 CHEMISTRY, APPLIED

Carbohydrate Polymers

Pub Date : 2025-12-01 DOI: 10.1016/j.carbpol.2025.124761

Zhe Zhang , Congcong An , Liyun Feng, Qingfeng Yang, Ming Zhang

Heavy metal ions are increasingly accumulated in the natural environment due to growing water pollution, causing serious pollution to biological communities. Therefore, it is of great significance to study the qualitative and quantitative adsorption and detection of heavy metal ions in wastewater. Using cellulose nanofibrils (CNF)/chitosan (CS) composite as adsorbent framework, salicylaldehyde ethylenediamine Schiff base (SESB) as fluorescent and colorimetric probe, citric acid (CA) as crosslinking agent, and freeze-drying technology to prepare CNF/CS/CA/SESB composite sponge and membrane. After adsorbing Fe³⁺, the composites changes color from yellow-green to brownish-black under sunlight, and undergoes fluorescence quenching within 17 s under ultraviolet light, enabling highly sensitive, selective and reversible detection towards Fe³⁺. The composite sponge exhibits amphiphilicity and a underwater oil contact angle of 154°, which endows it with anti-fouling properties underwater. Its adsorption capacity is 438.68 mg·g⁻¹, and it has excellent underwater compressive elasticity as well as fluorescence and colorimetric reversibility, providing significant foundation for its application in water purification and collection. The composite membrane can be wide applied in information encryption and anti-counterfeiting fields. Predictably, CNF/CS/CA/SESB composites will offer theoretical reference for the assembly strategy of cellulose fluorescent probes, as well as their applications in detection and information encryption.

由于水体污染日益严重，重金属离子在自然环境中积累越来越多，对生物群落造成严重污染。因此，研究废水中重金属离子的定性定量吸附与检测具有重要意义。以纤维素纳米原纤维(CNF)/壳聚糖（CS）复合材料为吸附骨架，水杨醛乙二胺希夫碱（SESB）为荧光和比色探针，柠檬酸（CA）为交联剂，采用冷冻干燥技术制备CNF/CS/CA/SESB复合材料海绵和膜。复合材料吸附Fe3+后，在阳光照射下由黄绿色变为棕黑色，在紫外光照射下17 s内荧光猝灭，对Fe3+具有高灵敏度、选择性和可逆性。复合海绵具有两亲性，水下油接触角为154°，具有水下防污性能。其吸附量为438.68 mg·g−1，具有良好的水下压缩弹性以及荧光和比色可逆性，为其在水净化和收集中的应用提供了重要的基础。该复合膜可广泛应用于信息加密和防伪领域。可以预见，CNF/CS/CA/SESB复合材料将为纤维素荧光探针的组装策略及其在检测和信息加密方面的应用提供理论参考。

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引用次数: 0

Oligosaccharide mapping analysis through UPLC-Orbitrap-HRMS and enzymatic hydrolysis from Polygonatum odoratum (Mill.) Druce UPLC-Orbitrap-HRMS及酶解对玉竹中低聚糖的定位分析Druce

IF 12.5 1区化学 Q1 CHEMISTRY, APPLIED

Carbohydrate Polymers

Pub Date : 2025-12-01 DOI: 10.1016/j.carbpol.2025.124765

Qing-Hua Liu, Liu Yang, Yue Wang, Hao-Ming Xiong, Cai-Yun Wang, Guo-Yuan Zhu, Li-ping Bai, Zhi-Hong Jiang, Wei Zhang

Polygonatum odoratum (P. odoratum) oligosaccharides (POO) are bioactive compounds with complex structures. Since the precise structure of POO remains undefined, their pharmacological development and clinical application have been hindered. This study developed a universal strategy to elucidate oligosaccharide structures of P. odoratum by combining Orbitrap high-resolution mass spectrometry (Orbitrap-HRMS) and enzymatic hydrolysis. Initially, monosaccharide constituents of free oligosaccharides (POO) and polysaccharides (POP) in P. odoratum were quantitatively analyzed. The accurate mass values, retention time, and sequence-specific fragment information facilitated initial characterization by comparing with the self-established oligosaccharide library based on these monosaccharides. Due to the limitations of MS in precisely identifying isomer structures, enzymatic hydrolysis was further employed to distinguish the glycosidic linkage and oligosaccharide type. Fructanase mixture, endo-1,4-β-mannanase, exo-1,3-β-D-glucanase, α-galactosidase and amyloglucosidase were used to identify hexose-based isomers, while α-L-arabinofuranosidase and endo-1,4-β-xylanase were used for pentose-based isomers. The study revealed that POO primarily consisted of fructooligosaccharides, and its isomers, such as 1-kestose, 6-kestose, and neokestose, were clarified. POP mainly comprised galactomannan, with the branching site at α-(1 → 6)-galactoside in POPO determined for the first time in P. odoratum. This strategy provides a straightforward methodology for analyzing plant oligosaccharides, establishing a structure analytical foundation for further pharmacological research and potential clinical applications.

香竹寡糖（POO）是具有复杂结构的生物活性化合物。由于POO的精确结构尚不清楚，阻碍了它们的药理开发和临床应用。本研究采用Orbitrap高分辨率质谱法（Orbitrap- hrms）和酶解相结合的方法，建立了一种通用的方法来阐明香玉藤的低聚糖结构。首先，定量分析了香竹中游离寡糖（POO）和多糖（POP）的单糖成分。通过与基于这些单糖的自建低聚糖文库进行比较，准确的质量值、保留时间和序列特异性片段信息有助于初步表征。由于质谱法在精确鉴定异构体结构方面的局限性，我们进一步采用酶解法来区分糖苷键和寡糖类型。采用混合果糖酶、内切-1,4-β-甘露聚糖酶、外切-1,3-β- d -葡聚糖酶、α-半乳糖苷酶和淀粉葡糖苷酶鉴定己糖基异构体，采用α- l -阿拉伯糖醛酸苷酶和内切-1,4-β-木聚糖酶鉴定戊糖基异构体。研究表明，便便主要由低聚果糖组成，其异构体如1-酮糖、6-酮糖和新酮糖被澄清。POPO主要由半乳甘露聚糖组成，首次在香桐中检测到POPO中α-(1→6)-半乳甘露聚糖的分支位点。该策略为植物低聚糖的分析提供了一种简单的方法，为进一步的药理研究和潜在的临床应用奠定了结构分析基础。

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引用次数: 0

Corrigendum to “3-Diethylaminopropyl isothiocyanate modified glycol chitosan for constructing mild-acid sensitive electrospinning antibacterial nanofiber membrane” [Carbohydrate Polymers 324 (2024) 121468] “3-二乙基氨基异硫氰酸丙酯修饰乙二醇壳聚糖构建柔酸敏感静电纺丝抗菌纳米纤维膜”[碳水化合物聚合物324(2024)121468]。

IF 12.5 1区化学 Q1 CHEMISTRY, APPLIED

Carbohydrate Polymers

Pub Date : 2025-12-01 DOI: 10.1016/j.carbpol.2025.124589

Weiyang Shen , Yongxin wang , Yali Li , Zongyao Cui , Yitong Yang , Honglu Shi , Chenfeng Xu , Tingjie Yin

引用次数: 0

Corrigendum to “immunomodulatory activity of red algal galactans and their partially depolymerized derivatives in RAW264.7 macrophages” [carbohydrate polymers 347 (2025) 122741] “红藻半乳及其部分解聚衍生物在RAW264.7巨噬细胞中的免疫调节活性”[碳水化合物聚合物347(2025)122741]的更正。

IF 12.5 1区化学 Q1 CHEMISTRY, APPLIED

Carbohydrate Polymers

Pub Date : 2025-12-01 DOI: 10.1016/j.carbpol.2025.124694

Sanjida Humayun , Vitalijs Rjabovs , Elsa Easter Justine , Clarisa Naa Shormeh Darko , Md Musa Howlader , Indrek Reile , Jae Heon Sim , Yeon-Ju Kim , Rando Tuvikene

引用次数: 0

Eco-friendly sodium alginate-based composite foam for thermal insulation and flame retardancy 环保海藻酸钠基复合泡沫，用于隔热和阻燃

IF 12.5 1区化学 Q1 CHEMISTRY, APPLIED

Carbohydrate Polymers

Pub Date : 2025-12-01 DOI: 10.1016/j.carbpol.2025.124772

Shuo Wang, Yuxiao Fu, Zanyang Xu, Jidong Zhang, Ye Niu, Jintao Wang

Eco-friendly thermal insulation materials with better flame retardancy are of great significance in reducing energy consumption, minimizing fire hazards and protecting the environment. In this study, an eco-friendly mica/sodium alginate composite foam (SAM foam) was prepared by using sodium alginate and mica powder through the freeze-drying method and crosslinked by Ca²⁺. Additionally, to enhance the water resistance of SAM foam, the foam was hydrophobically modified with perfluorooctyltriethoxysilane (MSAM foam). The prepared SAM foam exhibits a porous structure with high porosity of 95.39 %, and low thermal conductivity (0.0438 W m⁻¹ K⁻¹), which endows it with good thermal insulation performance. More importantly, the incorporation of mica powder not only strengthened the mechanical properties of the SAM foam but also significantly enhanced its flame retardancy. Specifically, the foam exhibits a peak heat release rate of 13.8 kW m⁻², which is substantially lower than that of reported majority of flame-retardant polymeric materials. Furthermore, the limiting oxygen index (LOI) test results demonstrate that the SAM foam is non-flammable under the test conditions. Combined with its enhanced mechanical properties and a simple, potentially scalable fabrication process, the SAM foam may hold great potential for various applications, such as building insulation, packaging, and electronic device protection.

具有较好阻燃性的环保型保温材料对于降低能耗、减少火灾隐患、保护环境具有重要意义。本研究以海藻酸钠和云母粉为原料，通过冷冻干燥法制备了环保型云母/海藻酸钠复合泡沫（SAM foam）。此外，为了提高SAM泡沫的耐水性，用全氟辛基三乙基氧基硅烷（MSAM泡沫）对泡沫进行疏水改性。制备的SAM泡沫具有高孔隙率（95.39%）和低导热系数（0.0438 W m−1 K−1）的多孔结构，具有良好的保温性能。更重要的是，云母粉的加入不仅增强了SAM泡沫的力学性能，而且显著提高了其阻燃性。具体来说，泡沫的峰值放热率为13.8 kW m−2，大大低于大多数阻燃聚合物材料。此外，极限氧指数（LOI）测试结果表明，在测试条件下，SAM泡沫是不可燃的。结合其增强的机械性能和简单的，潜在的可扩展的制造工艺，SAM泡沫可能在各种应用中具有巨大的潜力，例如建筑绝缘，包装和电子设备保护。

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引用次数: 0