Carbohydrate Polymers最新文献_第9页

Preparation of nanoparticles from atmospheric pressure plasma jet-activated gas modified pectin for oral insulin delivery 常压等离子体喷射活化气修饰果胶制备用于口服胰岛素的纳米颗粒

IF 12.5 1区化学

Carbohydrate Polymers Pub Date : 2026-05-01 Epub Date: 2026-01-23 DOI: 10.1016/j.carbpol.2026.124970

Nuo Chen , Xijia Zhang , Weichao Cao , Hong Tian , Xiao Hua

{"title":"Preparation of nanoparticles from atmospheric pressure plasma jet-activated gas modified pectin for oral insulin delivery","authors":"Nuo Chen , Xijia Zhang , Weichao Cao , Hong Tian , Xiao Hua","doi":"10.1016/j.carbpol.2026.124970","DOIUrl":"10.1016/j.carbpol.2026.124970","url":null,"abstract":"<div><div>This study investigates the effects of atmospheric pressure plasma jet-activated gas (APPJ) treatment on pectin and its nanoparticles (APPJ-pectin NPs), and explores their applications in oral insulin delivery systems. The results showed that as APPJ treatment progressed, the molecular weight of pectin significantly decreased, while the degree of esterification increased and its hydrophilic/hydrophobic properties altered. The insulin encapsulation efficiency of APPJ-pectin NPs exhibited minimal variation during the initial stage of treatment. In vitro release studies showed that APPJ-pectin NPs protected insulin in simulated gastric fluid and gradually released it at neutral pH, with the release rate initially decreasing and then increasing with extended APPJ treatment. The hemolysis rates of all samples ranged from 2% to 5%, suggesting that APPJ-pectin NPs exhibited favorable hemocompatibility. APPJ-pectin NPs primarily underwent transepithelial transport via the transcellular pathway, being internalized by endocytosis and subsequently transported intracellularly into the bloodstream. The transepithelial transport efficiency of APPJ-pectin NPs was evaluated using the Transwell system. APPJ treatment significantly increased the transport efficiency, with A60-NPs showing a 57.14% increase compared to the control. Confocal laser scanning microscope observations and flow cytometry experiments further confirmed this result, demonstrating that the uptake of APPJ-pectin NPs by Caco-2 cells was time-dependent, with A60-NPs exhibiting the highest uptake efficiency.</div></div>","PeriodicalId":261,"journal":{"name":"Carbohydrate Polymers","volume":"379 ","pages":"Article 124970"},"PeriodicalIF":12.5,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146076549","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Investigation of the reaction kinetics of 3-chloro-2-hydroxypropyl-N,N,N-trimethylammonium chloride (CHPTAC) with cellulose fibres 3-氯-2-羟丙基-N，N，N-三甲基氯化铵（CHPTAC）与纤维素纤维反应动力学研究

IF 12.5 1区化学

Carbohydrate Polymers Pub Date : 2026-05-01 Epub Date: 2026-01-27 DOI: 10.1016/j.carbpol.2026.125021

Felix Netzer , Avinash P. Manian , Alistair W.T. King , Thomas Bechtold , Tung Pham

{"title":"Investigation of the reaction kinetics of 3-chloro-2-hydroxypropyl-N,N,N-trimethylammonium chloride (CHPTAC) with cellulose fibres","authors":"Felix Netzer , Avinash P. Manian , Alistair W.T. King , Thomas Bechtold , Tung Pham","doi":"10.1016/j.carbpol.2026.125021","DOIUrl":"10.1016/j.carbpol.2026.125021","url":null,"abstract":"<div><div>In the reaction system consisting of 3-chloro-2-hydroxypropyl-<em>N</em>,<em>N</em>,<em>N</em>-trimethylammonium chloride (CHPTAC), sodium hydroxide, cellulose and H<sub>2</sub>O, it is widely accepted that the low reaction yield is the result of fast alkaline hydrolysis of CHPTAC. Some inconsistencies remain unexplained by rapid hydrolysis alone, indicating the need to understand the role of the cellulose-NaOH interaction to advance beyond the current state of the art. This raises two key questions: is NaOH uptake on cellulose decisive for cationisation yield, and is all epoxide consumed by end of the cationisation? Investigations into the reactions rates were conducted in the absence and the presence of cellulose fibres by applying a novel ion-exchange high-performance liquid chromatography method and nitrogen analysis to quantify both reactant in solution and product formation. It was found that hydrolysis rates are slower in the presence of the fibre, which was attributed to sorption of reactants, particularly sodium hydroxide, onto the fibre. The bonding of CHPTAC to cellulose shows initially high reaction rates but approaches a plateau, even though 40% of the cationisation agent is still available in solution. This phenomenon is attributed to the consumption of “active” (deprotonated) cellulose sites, highlighting the need for improved understanding of the cellulose-NaOH interaction, and its influence on derivatisation reactions.</div></div>","PeriodicalId":261,"journal":{"name":"Carbohydrate Polymers","volume":"379 ","pages":"Article 125021"},"PeriodicalIF":12.5,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146049228","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Rod-like percolation of conducting polymers via vapor-phase polymerization into cellulose nanofibril hydrogels 导电聚合物通过气相聚合进入纤维素纳米纤维水凝胶的棒状渗透

IF 12.5 1区化学

Carbohydrate Polymers Pub Date : 2026-05-01 Epub Date: 2026-01-22 DOI: 10.1016/j.carbpol.2026.124949

Tobias Benselfelt , Noah Al-Shamery , Dace Gao , Pooi See Lee

{"title":"Rod-like percolation of conducting polymers via vapor-phase polymerization into cellulose nanofibril hydrogels","authors":"Tobias Benselfelt , Noah Al-Shamery , Dace Gao , Pooi See Lee","doi":"10.1016/j.carbpol.2026.124949","DOIUrl":"10.1016/j.carbpol.2026.124949","url":null,"abstract":"<div><div>Conducting polymers are essential for soft bioelectronics, but they are challenging to process into homogeneous, low-solidity hydrogels due to their poor solubility and tendency to agglomerate. Here, we utilize cellulose nanofibril (CNF) hydrogels as a percolating template for the vapor-phase assisted polymerization of conducting polymers. Pyrrole efficiently polymerizes within the hydrated CNF network, forming a conformal polypyrrole (PPy) coating that yields conductivities approaching 100 S/m and charge storage of 16 mAh/g (dry) or capacitance of 52 F/g solids at 93 wt% water content. The CNF framework induces rod-like percolation of the PPy phase, producing unusually low percolation thresholds and non-universal transport exponents. Long-aspect-ratio fibrils further enhance conductivity by increasing the number of effective junctions, and PPy stiffens the hydrogels (0.2–1.5 MPa) by locking these junctions. Glycerol could be used as the liquid phase to prevent evaporation and these gels remained conductive and dimensionally stable in air. Comparison with liquid-phase polymerization highlights that vapor delivery minimizes skin formation and enables more uniform bulk coverage. Finally, we demonstrate 2D/3D patterning and conductive filament fabrication, underscoring vapor-phase polymerization as a versatile route for soft conducting materials, electrodes, and patterned hydrogel devices.</div></div>","PeriodicalId":261,"journal":{"name":"Carbohydrate Polymers","volume":"379 ","pages":"Article 124949"},"PeriodicalIF":12.5,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146049229","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

N-acetylcysteine-functionalized biodegradable polysaccharide hydrogel patches for the repair of acute liver injury n -乙酰半胱氨酸功能化生物可降解多糖水凝胶贴片修复急性肝损伤

IF 12.5 1区化学

Carbohydrate Polymers Pub Date : 2026-05-01 Epub Date: 2026-01-21 DOI: 10.1016/j.carbpol.2026.124983

Shanshan Li , Lixin Xia , Shuo Wang , Ruibao Ju , Zi Han , Xiansen Lv , Baoqin Han , Jinhua Chi

{"title":"N-acetylcysteine-functionalized biodegradable polysaccharide hydrogel patches for the repair of acute liver injury","authors":"Shanshan Li , Lixin Xia , Shuo Wang , Ruibao Ju , Zi Han , Xiansen Lv , Baoqin Han , Jinhua Chi","doi":"10.1016/j.carbpol.2026.124983","DOIUrl":"10.1016/j.carbpol.2026.124983","url":null,"abstract":"<div><div>Acute liver injury (ALI) caused by acetaminophen (APAP) has a high incidence rate worldwide, and severe cases may cause liver failure or even death. <em>N</em>-acetylcysteine (NAC), as an effective treatment drug approved for clinical application in ALI, has limitations such as a short half-life and the requirement for high-dose injections. Consequently, it is imperative to optimize new administration method of NAC and promote alternative therapeutic strategies for ALI. Herein, hydrogel patches ONC composed of oxidized chondroitin sulfate (OCS) and NAC-grafted CMCS were developed, and their reparative effects on APAP-induced ALI were investigated. ONC hydrogels exhibited excellent biocompatibility and appropriate biodegradability, and favorable hemostatic effects in the liver. In vitro experiments demonstrated that ONC could promote the proliferation and migration of hepatocytes, as well as the angiogenesis of HUVECs. By establishing an APAP-induced ALI model in mice, liver enzymes after ONC hydrogel patches treatment recovered to near-normal levels. Moreover, histological examination, RT-qPCR, and transcriptome sequencing results demonstrated that ONC patches could reduce the expression of inflammatory factors and apoptosis in the liver, while simultaneously activating antioxidant-related signaling pathways, thereby promoting the regeneration and functional repair of damaged tissues. Therefore, ONC hydrogel patches may be a promising alternative strategy for treating ALI.</div></div>","PeriodicalId":261,"journal":{"name":"Carbohydrate Polymers","volume":"379 ","pages":"Article 124983"},"PeriodicalIF":12.5,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146049230","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

High-efficiency evaporation and concentration with exceptional salt resistance via a chitosan annular hydrogel evaporator 壳聚糖环形水凝胶蒸发器，高效蒸发浓缩，具有优异的耐盐性

IF 12.5 1区化学

Carbohydrate Polymers Pub Date : 2026-05-01 Epub Date: 2026-01-12 DOI: 10.1016/j.carbpol.2026.124910

Hang Su , Shanbin Zhang , Chen Yuan , Limei Li , Youdong Wang , Chen Song , Qing Xu , Xiang Li , Jitian Song

{"title":"High-efficiency evaporation and concentration with exceptional salt resistance via a chitosan annular hydrogel evaporator","authors":"Hang Su , Shanbin Zhang , Chen Yuan , Limei Li , Youdong Wang , Chen Song , Qing Xu , Xiang Li , Jitian Song","doi":"10.1016/j.carbpol.2026.124910","DOIUrl":"10.1016/j.carbpol.2026.124910","url":null,"abstract":"<div><div>To address the challenges of salt accumulation and limited evaporation rates in solar-driven interfacial evaporation systems under high-salinity environments, this study designed and fabricated an annular hydrogel evaporator with radially aligned channels based on the hydrophilic groups and cross-linked network properties of chitosan. This design significantly reduces material consumption while synergistically enhancing the evaporation rate and ambient energy harvesting capacity through a substantial increase in the Evaporation Area Index and intensified internal thermal convection, achieving an evaporation rate of 4.29 kg·m<sup>−2</sup>·h<sup>−1</sup> and a 6.7-fold improvement in volumetric evaporation efficiency. To further enhance long-term operational stability under extreme salinity, a top-active water supply strategy was introduced, which effectively clears concentrated salt ions at the evaporation interface via precise flow control, maintaining stable evaporation without salt deposition even in 25 wt% high-salinity brine. Outdoor experiments demonstrated that the system can not only continuously produce freshwater meeting WHO standards at a rate of 11.53–15.36 kg·m<sup>−2</sup>·d<sup>−1</sup>, but also simultaneously achieve efficient brine concentration (concentration ratio: 1.16–2.29) and effective purification of heavy metals and organic dyes. Leveraging the core properties achieved through chemical structure modulation of chitosan—such as low evaporation enthalpy, high hydrophilicity, and stable salt rejection—this technology can be extended to concentration-dependent processes including brine mineral recovery and crystal purification, establishing a new paradigm for such applications. This design strategy also opens a new pathway for the broader application of carbohydrate polymers in sustainable water treatment and resource recovery.</div></div>","PeriodicalId":261,"journal":{"name":"Carbohydrate Polymers","volume":"379 ","pages":"Article 124910"},"PeriodicalIF":12.5,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146076551","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Combination citric acid and phytic acid co-esterified starch derivative with cellulose acetate as a coating for formulating a full biomass-based slow-release urea fertilizer 柠檬酸和植酸共酯化淀粉衍生物与醋酸纤维素的组合作为涂层，用于配制全生物质基缓释尿素肥料

IF 12.5 1区化学

Carbohydrate Polymers Pub Date : 2026-05-01 Epub Date: 2026-01-26 DOI: 10.1016/j.carbpol.2026.125015

Shijia Gu , Guohua Dong , Xiaoxiao Tan , Xinjia Zhang , Tianyuan Xiao , Chao Wang , Yushu Wang , Wenzhi Zhang

{"title":"Combination citric acid and phytic acid co-esterified starch derivative with cellulose acetate as a coating for formulating a full biomass-based slow-release urea fertilizer","authors":"Shijia Gu , Guohua Dong , Xiaoxiao Tan , Xinjia Zhang , Tianyuan Xiao , Chao Wang , Yushu Wang , Wenzhi Zhang","doi":"10.1016/j.carbpol.2026.125015","DOIUrl":"10.1016/j.carbpol.2026.125015","url":null,"abstract":"<div><div>The development of coated slow-release fertilizers (SRF) utilizing low-cost and abundantly available biomass materials is still a significant challenge in sustainable agricultural production. Herein, based on the citric acid and phytic acid co-esterified natural starch (NS) derivatives (CAPAS) and cellulose acetate (CAc), a novel full biomass-based coated urea (CAPAS-CAc@urea) SRF was developed by utilizing multiple impregnation coating technology. The experimental results demonstrate that the synthesized CAPAS possesses higher hydrophobicity, film-forming ability, and a well-developed cross-linked network structure, ultimately leading to enhanced mechanical properties, hydrophobicity, and biodegradability of the CAPAS-CAc film. Importantly, the resulting CAPAS-CAc@urea SRF shows superior nutrient slow-release properties, endowing a cumulative N slow-release rate ∼ 77.5% (48 h) in water and ∼ 58.9% (29 d) in soil, which is approximately five times slower than that of uncoated urea. Kinetic fitting indicates that the N release of the prepared CAPAS-CAc@urea complies with the First-order kinetics model, which is governed by a Fickian diffusion mechanism. The results of the sugar sorghum pot experiment verify that CAPAS-CAc@urea exhibits the prominent function for promoting plant growth, primarily through improving root development. Consequently, this study provides a novel route for advancement of environmentally-friendly coated SRF with degradable biomass materials in the sustainable agriculture.</div></div>","PeriodicalId":261,"journal":{"name":"Carbohydrate Polymers","volume":"379 ","pages":"Article 125015"},"PeriodicalIF":12.5,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146076983","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dynamic chitosan-hyaluronic acid hydrogels for extrusion printing: Combined effects of polymer molecular weight and carbon nanofillers 挤出印刷用动态壳聚糖-透明质酸水凝胶：聚合物分子量和碳纳米填料的联合效应

IF 12.5 1区化学

Carbohydrate Polymers Pub Date : 2026-05-01 Epub Date: 2026-01-21 DOI: 10.1016/j.carbpol.2026.124982

Ane García-García , Maialen Goyoaga , Francisco Nuño , Ana Catarina Lopes , Estíbaliz Hernáez-Laviña , Isabel Moreno-Benítez , Jose Luis Vilas-Vilela , Senentxu Lanceros , Leyre Pérez-Álvarez

{"title":"Dynamic chitosan-hyaluronic acid hydrogels for extrusion printing: Combined effects of polymer molecular weight and carbon nanofillers","authors":"Ane García-García , Maialen Goyoaga , Francisco Nuño , Ana Catarina Lopes , Estíbaliz Hernáez-Laviña , Isabel Moreno-Benítez , Jose Luis Vilas-Vilela , Senentxu Lanceros , Leyre Pérez-Álvarez","doi":"10.1016/j.carbpol.2026.124982","DOIUrl":"10.1016/j.carbpol.2026.124982","url":null,"abstract":"<div><div>Despite the increasing interest on self-healing hydrogels in the fabrication of customized scaffolds for tissue engineering applications, their optimal printability is still a challenge due to the weak mechanical stability of dynamic networks. This work presents the first successful extrusion-based 3D-printing of <em>N</em>-succinyl chitosan (S-CHI) and oxidized hyaluronic acid (A-HA). The dynamic hydrogels based on imine bonds formation between S-CHI and A-HA were reinforced with graphene oxide (GO), amino-functionalized GO (GO-NH<sub>2</sub>), carboxyl-functionalized carbon nanotubes (CNT-COOH), and amino-functionalized CNTs (CNT-NH<sub>2</sub>) in order to study their effect on the 3D-printability, mechanical, rheological and self-healing properties of the gels. Compression tests, strain sweeps tests and the geometry of the printed scaffolds shown that non-aminolized GO and CNTs strengthen the networks, and improve printability but cause a detrimental effect on the self-recovery capability, unlike amino-functionalized fillers that enhance self-repairing but weaken mechanical strength and printability. The presence of the fillers also delays gelation, particularly in the case of amino functionalized particles. However, electrochemical impedance spectroscopy confirmed that the incorporation of the fillers did not affect the electrical conductivity of the hydrogels. Besides, this study analyses the role of the molecular weight of S-CHI units on the aforementioned properties.</div></div>","PeriodicalId":261,"journal":{"name":"Carbohydrate Polymers","volume":"379 ","pages":"Article 124982"},"PeriodicalIF":12.5,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146076984","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Development of a double-network gel foam based on sodium carboxymethyl cellulose with enhanced extinguishing and re-ignition resistance performance for tank fires 基于羧甲基纤维素钠的双层网状凝胶泡沫的研制，增强了储罐火灾的灭火和抗再燃性能

IF 12.5 1区化学

Carbohydrate Polymers Pub Date : 2026-05-01 Epub Date: 2026-01-22 DOI: 10.1016/j.carbpol.2026.124996

Congpei Wu , Zhenqi Hu , Jianping Zhang , Chang Tian , Anthony Chun Yin Yuen , Jinlong Zhao

{"title":"Development of a double-network gel foam based on sodium carboxymethyl cellulose with enhanced extinguishing and re-ignition resistance performance for tank fires","authors":"Congpei Wu , Zhenqi Hu , Jianping Zhang , Chang Tian , Anthony Chun Yin Yuen , Jinlong Zhao","doi":"10.1016/j.carbpol.2026.124996","DOIUrl":"10.1016/j.carbpol.2026.124996","url":null,"abstract":"<div><div>Traditional fluorinated foams (AFFF/FFFP), widely used for liquid fire suppression, suffer from poor thermal stability, re-ignition propensity, and often contain environmentally harmful fluorocarbon surfactants. This study developed an interpenetrating double-network gel foam (IDNGF) using non-fluorinated surfactants (AEG and AOS), gelling agent (CMC-Na and Na₂SiO₃), and crosslinking agent (AlCit). Orthogonal experiments optimized the foam expansion ratio and water retention. The optimal formulation—0.6 wt% AOS/AEG (1:9), 2.2 wt% Na₂SiO₃, 0.14 wt% CMC<img>Na, and 1.0 wt% AlCit—produced homogeneous foams with enhanced thermal stability due to the formation of a CMC–Al<sup>3+</sup>/silicate double-network structure. Thermogravimetric analysis revealed a significantly higher complete evaporation temperature than conventional FFFP. Reactive forcefield molecular dynamics (ReaxFF-MD) simulations identified orthosilicic acid and aluminum-containing oxides as key pyrolysis products. Fire extinguishing and re-ignition existence experiments demonstrated that IDNGF reduced extinguishing time by 3.6% relative to FFFP while significantly extending the burnback time to 603 s—a 76.3% improvement. These results highlight the potentil of using IDNGF as a high-performance, re-ignition-resistant, and sustainable fire suppression agent.</div></div>","PeriodicalId":261,"journal":{"name":"Carbohydrate Polymers","volume":"379 ","pages":"Article 124996"},"PeriodicalIF":12.5,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146076550","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Chemically modified bacterial cellulose–mediated fiber salting-out method for preparing tough hydrogels 制备坚韧水凝胶的化学修饰细菌纤维素介导纤维盐析方法

IF 12.5 1区化学

Carbohydrate Polymers Pub Date : 2026-05-01 Epub Date: 2026-01-27 DOI: 10.1016/j.carbpol.2026.124999

Bei Zhang , Xin-Xin Chen , Xiao-Rui Ge , Xin-Ping Wang , Xiao-Hui Yao , Wei-Guo Zhao , Tao Chen , Dong-Yang Zhang

{"title":"Chemically modified bacterial cellulose–mediated fiber salting-out method for preparing tough hydrogels","authors":"Bei Zhang , Xin-Xin Chen , Xiao-Rui Ge , Xin-Ping Wang , Xiao-Hui Yao , Wei-Guo Zhao , Tao Chen , Dong-Yang Zhang","doi":"10.1016/j.carbpol.2026.124999","DOIUrl":"10.1016/j.carbpol.2026.124999","url":null,"abstract":"<div><div>Bacterial cellulose (BC) is employed as a toughening agent in the preparation of composite hydrogels. However, achieving both high strength and toughness after incorporating BC into hydrogels remains challenging. Insufficient amounts of BC limit the enhancement of strength, whereas excessive BC results in reduced elongation of hydrogels. Herein, a fiber salting-out method was developed to fabricate BC/polyvinyl alcohol (PVA) hydrogels by modifying BC with Hofmeister series ions (–COO<sup>−</sup>, –PO<sub>3</sub><sup>2−</sup>, –SO<sub>3</sub><sup>−</sup>). Through the fiber salting-out effect of BC, PVA was induced to aggregate on the BC surface, forming more crystalline domains and thereby improving the mechanical properties of the hydrogels. Among them, the tensile strength and toughness of the SBCP hydrogel (BC modified with –SO<sub>3</sub><sup>−</sup>) reached the highest values, measuring 2.98 MPa and 27.48 MJ m<sup>−3</sup>, respectively—representing 9-fold and 36-fold increases over those of pure PVA hydrogels. Furthermore, this hydrogel exhibits high electrical conductivity and favorable biocompatibility. This study presents a new strategy for fabricating tough BC-based hydrogels and provides insight into new applications for BC fibers.</div></div>","PeriodicalId":261,"journal":{"name":"Carbohydrate Polymers","volume":"379 ","pages":"Article 124999"},"PeriodicalIF":12.5,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146076553","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Investigation of holocellulose, lignin, and plasticizer interactions and their effect on the thermoformability of plasticized kraft pulp studied by ssNMR, O-PTIR and SAXS/WAXS 利用ssNMR、O-PTIR和SAXS/WAXS研究了全新纤维素、木质素和增塑剂的相互作用及其对增塑剂硫酸盐浆热成型性能的影响

IF 12.5 1区化学

Carbohydrate Polymers Pub Date : 2026-05-01 Epub Date: 2026-01-22 DOI: 10.1016/j.carbpol.2026.125002

Åke Henrik-Klemens , Stephanie Bachmann , Dinu Iuga , Anette Larsson

{"title":"Investigation of holocellulose, lignin, and plasticizer interactions and their effect on the thermoformability of plasticized kraft pulp studied by ssNMR, O-PTIR and SAXS/WAXS","authors":"Åke Henrik-Klemens , Stephanie Bachmann , Dinu Iuga , Anette Larsson","doi":"10.1016/j.carbpol.2026.125002","DOIUrl":"10.1016/j.carbpol.2026.125002","url":null,"abstract":"<div><div>Plasticization-enhanced thermoformability in pulp materials could enable the replacement of fossil-based thermoplastics, but the process is still in its infancy, with many knowledge gaps. One such gap is how plasticizers of varying chemical structures distribute themselves within the pulp cell wall and what components – cellulose, hemicellulose, or lignin – they preferentially interact with. This gap has hindered a full understanding of how these compounds affect the thermoformability of the cell wall – a key factor in pulp molding. In this work, unbleached softwood kraft pulp was plasticized with glycerol and triacetin. Solid-state spin-transfer and relaxation NMR and optical photothermal infrared spectroscopy (O-PTIR) revealed differences in the molecular dispersion of the two plasticizers within the cell wall. Dynamic mechanical analysis (DMA) showed that the softening temperature of the pulp – the <em>T</em><sub>g</sub> of lignin – was reduced from 235 °C to ∼120 °C with both plasticizers, allowing for thermal processing at non-degrading temperatures. X-ray scattering of pulp hot-pressed above and below the <em>T</em><sub>g</sub> revealed increased cellulose aggregation, but only with plasticizers was this observed without reduction in crystallinity. This indicates that deformation mechanism under hot-pressing was more plastic when plasticized and operated above the <em>T</em><sub>g</sub> of lignin.</div></div>","PeriodicalId":261,"journal":{"name":"Carbohydrate Polymers","volume":"379 ","pages":"Article 125002"},"PeriodicalIF":12.5,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146171320","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0