Coatings
·
2024
·Vol. 14
·期 4
·421
·
IF 2.9
Guanyu Cai,Jing Sun,Fei Kang,Qilin Lv,Jin Liu,Jie Wang,Zideng Gao,Xueqin Ren
Cadmium (Cd2+) pollution in soil and water bodies is a significant environmental concern, necessitating effective remediation strategies. Traditional methods often fall short in efficiency, cost-effectiveness, and environmental sustainability. This study develops and evaluates the effectiveness of chitosan–gelatin–hydroxypropyl methylcellulose (CS-GEL-HPMC) membranes for Cd2+removal from polluted environments. CS-GEL-HPMC membranes were synthesized with varying HPMC concentrations. Their structural and morphological characteristics were analyzed using UV–visible absorption spectroscopy and FT-IR. The membranes’ stability across different pH levels and their morphological traits were assessed. The adsorption efficiency for Cd2+ions was evaluated in both aqueous solutions and soil environments under varying conditions of pH, initial ion concentration, and contact time. The CS-GEL-HPMC membranes demonstrated significant structural integrity and stability, especially at higher HPMC concentrations. UV–visible and FT-IR analyses confirmed the successful integration of HPMC into the CS-GEL matrix. In aqueous solutions, the membranes exhibited efficient Cd2+adsorption, with the best performance observed for the CS30-GEL30-HPMC40 membrane. The adsorption capacity was influenced by contact time, initial Cd2+concentration, and pH. In soil treatments, the membranes effectively reduced Cd2+concentrations, with higher membrane dosages yielding better results. The incorporation of additives like (hydroxyapatite) HAP, fly ash (FA), and cement further enhanced the remediation efficiency. In summary, CS-GEL-HPMC membranes, particularly when combined with additives, emerge as a promising, sustainable solution for Cd2+remediation in both soil and water bodies. This study highlights the potential of biopolymer-based composites in environmental clean-up efforts, offering a novel approach that is both effective and eco-friendly.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
FOOD HYDROCOLLOIDS
·
2020
·
IF 7.053
Zhili Ji,Hongsheng Liu,Long Yu,Qingfei Duan,Ying Chen,Ling Chen
Studies on unique blends of cool and thermal gels have attracted increasing attention since they both have scientific and commercial importance, such as functional food design and edible packaging materials etc. In this work, the pH dependent gelation behaviors and morphologiesof blends of a cool gel, gelatin (GA), and a thermal gel,hydroxypropylmethylcellulose (HPMC), in aqueous solution were investigated by rheometer, UV spectrophotometer, fluorescence microscope (FM) and environmental scanning electron microscopy (ESEM). It was found that when pH < 4.75, HPMC was the continuous phase, while GA was the separated phase distributed in HPMC matrix as small spherical domains. Phase transition occurred at pH 5.00, in which GA became the continuous phase, while HPMC appeared as separated droplets dispersed in GA matrix. At lower pH values, GA and HPMC were compatible based on UV detection, ESEM observation, as well as phase separation kinetics. Near the isoelectric point (pI) of gelatin (pH 7.0–9.0), a maximum viscoelastic module (G') was detected. It was noticed that there were many interphasic regions in the blend systems. Each phase was not pure: GA phase contained some HPMC and vice versa at all pH values, which means that GA and HPMC are partly miscible or compatible to a certain degree.
研究领域:
食品科学
·
材料科学
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Qianyi Zhou,Shuangshuang Huang,Lina Zou,Dan Ren,Xiyu Wu,Dan Xu
Hydroxypropyl methylcellulose (HPMC) was employed as an intermediate layer to enhance interfacial interaction between chitosan (CS) coating and tangerine fruits, thereby improving the preservation effect. Owing to the low surface tension of tangerine fruit (26.04 mN/m), CS coating solutions showed poor wetting properties on fruit peels (contact angle > 100°). However, by applying a 1.0 % ( w / v ) HPMC coating on fruits, the contact angle of CS solutions with concentrations of 0.5 %, 1.0 %, and 1.5 % (w/v) decreased to 47.0°, 47.4°, and 48.5°, respectively, whereas the spreading coefficient increased to −16.0 mN/m, −17.6 mN/m and −19.8 mN/m, respectively. Subsequently, the effects of the coatings on fruit quality were investigated. The results demonstrated the promising performance of HPMC-CS two-layer coating in inhibiting fruit respiration, reducing decay rate, and maintaining nutrient content. Notably, HPMC-1.5%CS coating not only reduced the decay rate of tangerine fruit by 45 % and 31 %, in comparison to the uncoated group (CK) and pure CS coating respectively, but also maintained a high content of ascorbic acid. Therefore, this study confirmed that the use of amphiphilic polymers for improving the surface properties of fruits can effectively facilitate the wetting of hydrophilic coatings on fruits, and significantly improve the fresh-keeping performance of edible coatings.
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
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Cheng Tang,Yujuan Xu,Yong Xie,Xiaoyan Liu,Zhaoming Wang,Hui Zhou,Kezhou Cai,Baocai Xu
The gelation mechanisms of aqueous collagen/hydroxypropyl methylcellulose (HPMC) mixtures were investigated below the macroscopic phase separation threshold. This study examines the interactions between collagen and HPMC, the phase behavior, and the resulting gel and structural properties. The results indicate that at low mixing concentrations, hydrogen bonding between collagen and HPMC, along with excluded volume effects, induces microscopic phase separation under partially phase-compatible conditions. As the HPMC concentration increases, the phase morphology transitions from a collagen-dominant phase to an HPMC-dominant phase, accompanied by enhanced hydrogen bonding between the two components. Gel formation in these mixtures follows a two-step gelation process, with HPMC influencing gelation kinetics. The excluded volume effect results in collagen concentration, while an optimal HPMC concentrations facilitates the entanglement of collagen chains, promoting the formation of α-helix, β-turn, and antiparallel β-sheet conformations, and ordered triple-helix structures, thereby enhancing gel properties. However, at excessively high HPMC concentrations, excessive hydrogen bonding and excluded volume effects hinder the formation of triple-helix structures, leading to a gel network with reduced mechanical properties. This study highlights the critical role of HPMC concentration in modulating collagen gel formation and provides insights into the complex interactions governing gelation in protein-polysaccharide systems.
研究领域:
生物材料学
·
食品科学
·
高分子化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
FOOD CHEMISTRY
·
2021
·
IF 7.514
Meixia Zheng,Jianfu Chen,Kok Bing Tan,Meichun Chen,Yujing Zhu
A novel film composed of xanthan gum (XG) and hydroxypropyl methylcellulose (HPMC) was prepared (XH). The films were characterized by Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), and scanning electron microscopy (SEM). The light transmittance, mechanical properties and water vapor transmission rate (WVTR) indicated the good compatibility between XG and HPMC with hydrogen-bond interaction and XG had a significant effect on the chemical structure, crystalline texture and microstructure of the XH composite film. The best XH sample with optimum XG concentration of 2 g/L was used as food packaging via coating onto banana, whereby the weight loss rate on banana was able to decreased from 25 ± 3% (without XH coating) to 16 ± 4% (with XH coating). Consequently, the release of flavor substances was also decreased. Banana shelf life has qualitatively improved with XH composite film for food preservation and affirmed the uses in food packaging applications.
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
FOOD CHEMISTRY
·
2025
·
IF 9.8
Yuehong Fang,Chengmei Liu,Shunjing Luo,Xiuting Hu
Ten polysaccharides were mixed to select polysaccharides with the synergistic anti-freezing effect in this study. It was found that hydroxypropyl methylcellulose (HPMC) and pectin (PEC) or κ-carrageenan (κ-CAR) synergistically decreased the freezing temperature of water and enhanced the ice recrystallization inhibition activity. Moreover, HPMC/κ-CAR exhibited greater synergy than HPMC/PEC. Raman spectroscopy analysis demonstrated that these polysaccharides increased the disorder of water molecules and inhibited the transition from liquid water to solid ice, and HPMC and PEC or κ-CAR had a synergistic effect on increasing the disorder of water molecules. Particularly, dynamic ice-shaping measurements showed that the HPMC/κ-CAR mixture changed circular ice into hexagonal ice in 20.0 % sucrose solution, whereas the HPMC/PEC mixture did not. Moreover, κ-CAR was more compatible with HPMC than PEC. The above differences might explain why κ-CAR was more effective than PEC in improving the anti-freezing ability of HPMC.
研究领域:
食品科学
·
生物化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Food & Function
·
2018
·Vol. 9
·期 7
·3657-3664
·
IF 3.289
Gege Sun,Lingling Lei,Huanle Chen,Bin Li,YanPing Cao,Yan Li
Hydroxypropyl methylcellulose (HPMC)-stabilized emulsions were produced and their structure was further modified by altering the oil (glycerol monolaurate, GML) and aqueous (whey protein concentrate, WPC) phases. Then, the encapsulation and release of nobiletin were evaluated. HPMC (3%) could efficiently stabilize the oil droplets with a particle size around 370 nm. When HPMC was the emulsifier, the stabilization time of nobiletin in the emulsion was prolonged, but its encapsulation amount was still maintained around 4.5 mg g−1. Nobiletin crystals were found to adsorb on the interface of oil droplets. The addition of GML and WPC changed the microstructure of HPMC-stabilized emulsions. Both of them enhanced the encapsulation efficiency and storage stability of nobiletin. Nobiletin crystals became softer and shorter. After modification, nobiletin was stable for one week at a level of 7.5 mg g−1. The bioaccessibility of nobiletin was modulated in the presence of GML and WPC. The results demonstrate that the structure of emulsion-based delivery systems affects the encapsulation and delivery of hydrophobic components.
研究领域:
食品科学
·
药物递送系统
·
生物化学
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Shuai Zhang,Jiantao Zhu,Yan Song,Mei Zhang,Minghai Qu,Fan Yang,Rubing Bai,Huanjie Chi,Jinkun Wang,Junzhi Ma
Silk is widely utilized in high-end fashion apparel, home textiles and other fields due to its excellent comfort and air permeability and moisture permeability. However, inkjet printing on silk typically requires two printings on the front and back side to obtain a good color performance, leading to high process cost and low efficiency. Herein, clean and efficient inkjet printing is achieved using hydroxypropyl methylcellulose/sodium alginate (HPMC/SA) graded to regulate the surface tension of silk. In comparison to traditional inkjet printing process, the process utilizing HPMC/SA graded treatment eliminates the need for secondary inkjet printing, reduces energy consumption, and lowers the per-printing cost by 47 %. Meanwhile, this approach also significantly improved the utilization of reactive dyestuff ink, enhancing the uniformity and clarity on both sides of the printed silk patterns. Therefore, the development of a novel inkjet printing process with graded regulation of fabric surface tension is highly significant for the green and sustainable development of the textile printing and dyeing industry.
研究领域:
纺织科学
·
绿色制造
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Ziyu Yao,Luyang Zuo,Huan Yang,Bin Qin,Xiaolong Li,Jinzeng Wang,Fang Wang
A ternary composite of Ti 3 C 2 quantum dots, hydroxypropyl methylcellulose, and Bi 2 WO 6 effectively harnesses both optical and mechanical energy to achieve a strong piezo-phototronic effect for the removal of tetracycline hydrochloride. Under external mechanical stress, this system maintains a tightly integrated heterostructure, dynamically facilitating charge transfer across the nanosheets. Notably, the catalytic activity of the Ti 3 C 2 quantum dots/hydroxypropyl methylcellulose/Bi 2 WO 6 composite has been significantly enhanced, exhibiting a kinetic rate constant of 0.146 min −1 , which is 9.7 and 7.3 times higher than that of Bi 2 WO 6 under pure photocatalytic and piezocatalytic conditions, respectively. The enhanced piezo-photocatalytic performance can be attributed to several synergistic factors: (i) Charge carriers move in the direction of external forces while holes move in the opposite direction, reducing the recombination efficiency of photoexcited electrons and holes; (ii) The good dispersibility and abundant hydroxyl groups of hydroxypropyl methylcellulose enable the even distribution of Ti 3 C 2 quantum dots. Moreover, they form strong hydrogen bonds between Ti 3 C 2 quantum dots and Bi 2 WO 6 , significantly promoting charge transfer and system stability; (iii) Ti 3 C 2 quantum dots serve as electrons accepter of photogenerated carriers on the surface of Bi 2 WO 6 nanoplates, accelerating the separation and migration of photoelectrons. This work demonstrates the successful construction of a stable organic–inorganic ternary catalytic system and elucidates its underlying mechanism, offering a promising strategy to boost the piezo-phototronic effect in advanced wastewater treatment applications.
研究领域:
环境科学
·
材料科学
·
催化化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2013
·
IF 2.39
Chunfa Dong,Xianglin Zhang,Hao Cai
A simple and environmentally friendly method for the synthesis of highly stable and small sized silver nanoparticles with narrow distribution from 3 nm to 17 nm is reported. Silver nitrate, hydroxy propyl methyl cellulose (HPMC) and glucose, were used as silver precursor, capping agents and reducing agents respectively. The formation of silver nanoparticles was observed by change of color from colorless to wine red. The silver nanoparticles were characterized by transmission electron microscopy (TEM), UV–visible spectroscopy (UV–vis), X-ray diffraction (XRD) and Fourier-transform infrared spectroscopy (FT-IR). The results demonstrated that the obtained metallic nanoparticles were single crystalline silver nanoparticles capped with HPMC. The effects of the reaction time, reaction temperature and the concentration of silver ion and reducing agents on the particle size were investigated. A possible formation mechanism was proposed. The method may be extended to other noble metal for other technological applications such as additional medicinal, industrial applications.
研究领域:
材料科学
·
纳米技术
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
FOOD HYDROCOLLOIDS
·
2015
·
IF 4.09
Huanle Chen,Yaping An,Xiangxing Yan,David Julian McClements,Bin Li,Yan Li
Emulsion-based delivery systems are widely utilized for encapsulation of hydrophobic bioactive compounds . However, they must be carefully designed to retain and stabilize the encapsulated components during storage, and to release them after ingestion. In the present work, the influence of hydroxypropyl methylcellulose (HPMC) addition and heat treatment on the retention and release of a model hydrophobic nutraceutical (nobiletin) in nanoemulsions prepared by self-emulsification was investigated. Physical stability was assessed by measuring nobiletin retention, crystal morphology, and droplet size during storage. Further, the bioaccessibility of nobiletin was evaluated using a simulated gastrointestinal model. The results indicated that the presence of HPMC in the aqueous phase improved the retention of nobiletin in the nanoemulsions , without promoting any physical instability. The saturation concentration of nobiletin in the nanoemulsions increased from 4.5 to 6.0 mg/mL in the presence of HPMC. Heating the nanoemulsions promoted rapid droplet coalescence above a critical temperature. The combination of HPMC addition and heat treatment increased the retention time of nobiletin in nanoemulsions. Neither HPMC addition nor heat treatment affected the bioaccessibility (around 85%) of nobiletin when it was fully dissolved in the nanoemulsions. However, when nobiletin was not fully dissolved in the nanoemulsions, HPMC addition (from 52 to 59% without heat treatment) and heat treatment (from 52% to 82% without HPMC and from 59% to 84% with HPMC) increased the bioaccessibility. These findings are useful for the rational design and fabrication of nanoemulsion-based delivery systems with high loading efficiency and good release characteristics.
研究领域:
食品科学
·
药剂学
·
生物技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2020
·Vol. 138
·期 3
·49916
·
IF 2.52
Xueyu Wang,Yong Qi,Shufen Zhang,Wenbin Niu,Wei Ma,Suli Wu,Bingtao Tang
Mechanical nondiscoloring and antistretching photonic crystal (PC) films, especially those with stable structure colors during deformation, have great potential applications in wearable display devices, decoration, and packaging. Here, PC films with antistretching and invariant structural colors during deformation were prepared, by combining Zn 2+ coordinated elastic material and hydroxypropyl methylcellulose (HPMC) with polystyrene@silica (PS@SiO 2 ) colloidal crystals. The PC films release energy by forming local fractures at a microscopic level during the straining process but the lattice spacing and effective refractive index of the local array do not change. According to the Bragg law, the structure color remains unchanged. The introduction of HPMC gave the PC films excellent tensile properties, and the maximum tensile strength reached 10 MPa. And after 100 times of stretching, bending and compression cycles, the structural color remained unchanged.
研究领域:
材料科学
·
光学
✓ 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）