COLORATION TECHNOLOGY
·
2025
·
IF 2.2
Na-won Baek
Enzymatic coloration offers an eco-friendly alternative to synthetic dyeing but faces commercial limitations, including poor reproducibility, low colour fastness and restricted colour range. This study investigated horseradish peroxidase-catalysed oxidation and coloration of four phenolic compounds on silk and cotton fabrics, incorporating polyethylene glycol (PEG) templates to improve dye uptake and stability. Dyeing performance was evaluated using colorimetric analysis, with maximum K/S values reaching 11.6 for cotton and 19.2 for silk (with PEG), representing an improvement of 36.5% and 9.7%, respectively, compared with non-templated samples. Colour fastness to washing, rubbing and light was assessed according to ISO standards, showing that PEG-treated fabrics exhibited ratings that were generally one to two grades higher, or at least equivalent, compared with non-templated samples. Structural and morphological changes were examined by Fourier Transform–infrared spectroscopy, scanning electron microscopy and thermogravimetric analysis, while liquid chromatography–tandem mass spectrometry elucidated the polymerisation mechanism of the oxidised phenolic dyes. These results demonstrate that PEG-templated enzymatic coloration can enhance colour intensity and fastness while maintaining sustainability, providing a viable pathway towards greener textile processing.
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产品关联
DOI
高影响因子
JOURNAL OF NANOBIOTECHNOLOGY
·
2021
·Vol. 19
·期 1
·1-14
·
IF 10.435
Xiong Wei,Lan Qiumei,Liang Xiaonan,Zhao Jinmin,Huang Hanji,Zhan Yanting,Qin Zainen,Jiang Xianfang,Zheng Li
Intra-articular (IA) injection is an efficient treatment for osteoarthritis, which will minimize systemic side effects. However, the joint experiences rapid clearance of therapeutics after intra-articular injection. Delivering system modified through active targeting strategies to facilitate localization within specific joint tissues such as cartilage is hopeful to increase the therapeutic effects. In this study, we designed a nanoscaled amphiphilic and cartilage-targeting polymer-drug delivery system by using formononetin (FMN)-poly(ethylene glycol) (PEG) (denoted as PCFMN), which was prepared by PEGylation of FMN followed by coupling with cartilage-targeting peptide (CollBP). Our results showed that PCFMN was approximately regular spherical with an average diameter about 218 nm. The in vitro test using IL-1β stimulated chondrocytes indicated that PCFMN was biocompatible and upregulated anabolic genes while simultaneously downregulated catabolic genes of the articular cartilage. The therapeutic effects in vivo indicated that PCFMN could effectively attenuate the progression of OA as evidenced by immunohistochemical staining and histological analysis. In addition, PCFMN showed higher intention time in joints and better anti-inflammatory effects than FMN, indicating the efficacy of cartilage targeting nanodrug on OA. This study may provide a reference for clinical OA therapy.
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DOI
PubMed
高影响因子
POLYMER
·
2022
·
IF 4.432
Yu-Zhuang Gao,Jun-Cai Chen,Zhe Cui,Cong-Lei Zhao,Yi-Xian Wu
The acylated propylene glycol alginate- g -polytetrahydrofuran amphiphilic graft copolymers (APGA- g -PTHF) with various grafting numbers ( G N ) of 3–23 per 1000 monosaccharide rings and PTHF (PTMG or PTMO) branches with different molecular weights ( M n,PTHF ) of 600–3400 g/mol could be successfully synthesized via nucleophilic substitution of PTHF living chains carrying oxonium ions with the –OH side groups of APGA backbone. The nanophase separation, the hydrophobicity and the surface roughness were increased due to the less restricted movement of hydrophobic PTHF branches to the surface. APGA- g -PTHF graft copolymers behave low cytotoxicity and good anti-protein performance. Interestingly, APGA- g -PTHF amphiphilic graft copolymers could form homogeneous nanospheres (<250 nm) via self-assembly in H 2 O/CH 2 Cl 2 medium which could be used for drug (ibuprofen or curcumin) carriers having high drug loading efficiency (∼45%) and fast release behavior. The nanospheres carried curcumin behave very higher (10-fold) anticancer effect against HeLa cells than that of curcumin and thus reduce the harmful drug dosage. Moreover, the nanospheres carried drug might enter into HeLa cells and present pH-sensitive drug release. To the best of our knowledge, this is the first example of PGA-based graft copolymers for highly effective nano-carriers and anti-protein surfaces, which would have a prospect in biomedical areas.
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DOI
高影响因子
CELLULOSE
·
2017
·Vol. 24
·期 10
·4189-4203
·
IF 3.417
Zhang Xiuqiang,Zhang Jinlong,Dong Lili,Ren Suxia,Wu Qinglin,Lei Tingzhou
We report a series of thermoresponsive cellulose nanocrystals (CNCs) decorated with poly(poly(ethylene glycol) methylacrylate) copolymers (poly(PEGMA)- g -CNCs) synthesized by surface initiated-atom transfer radical polymerization (SI-ATRP). The chemical structures and surface morphologies were subsequently confirmed by FT-IR, XPS, and AFM measurements. With regard to thermally responsive behavior, poly(PEGMA)- g -CNCs show tunable lower critical solution temperature (LCST) values in the range of 34–66 °C by varying the feeding ratios of comonomers. The reversible morphological transformation from individual nano-rod structures to larger globule aggregates was further verified by AFM during the LCST transition. These functionalized CNCs have potential as smart film filters and biosensors.
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DOI
高影响因子
JOURNAL OF SURFACTANTS AND DETERGENTS
·
2020
·Vol. 23
·期 5
·981-989
·
IF 1.654
Xihuai Qiang,Ting Jian,Wei Xu
A series of polyethylene glycol-linked Gemini fatty alcohol phosphate surfactants (GFAP) were prepared with long chain n -alkanol (C = 8, 12, 16, 18), polyethylene glycol (PEG-200, PEG-400, PEG-600, PEG-800, PEG-1000) and phosphorus oxychloride (POCl 3 ). The structure of the prepared surfactants was characterized by Fourier transform infrared spectrometer (FT-IR). The surfactants were employed for the modification of chrome-tanned leather. The morphological changes of chrome-tanned leather and modified chrome-tanned leather were observed by scanning electron microscopy (SEM). The relationship between the alkyl chain length and molecular weight of the PEG and the hydrophobicity, softness, mechanical strength of modified chrome-tanned leather was also discussed. The experimental results showed that the mechanical strength and softness of modified chrome-tanned leather were enhanced with an increase of alkyl chain length, while the hydrophobicity, mechanical strength and softness were decreased with an increase of molecular weight of the PEG. The hydrophobicity, mechanical strength and softness of modified chrome-tanned leather were optimized for an alkyl chain length of 16. Therefore, 16–200 Gemini phosphate surfactants with an alkyl chain length of 16 and a PEG molecular weight of 200 have a good comprehensive modification effect on Chrome-tanned leather, the tensile strength, tear strength and softness of modified chrome-tanned leather are 57.07 N mm −2 , 79.49 N mm −1 , 9.73 mm, respectively.
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DOI
高影响因子
CHINESE JOURNAL OF POLYMER SCIENCE
·
2020
·Vol. 39
·期 3
·355-364
·
IF 3.154
Ma Ying-Ying,Liu Min,Wang Jing-Tao,Zhu Bin,Li Yi-Fan
Recently, hollow filler as an emerging concept is attracting more attention in preparation of mixed matrix membranes (MMMs). Herein, poly(ethylene glycol) microcapsules (PMC) are synthesized via distillation precipitation polymerization and embedded into the polyetherimide (Ultem®1000) matrix to fabricate MMMs for CO 2 capture. The PMC exhibits a preferential hollow structure within the Ultem matrix to furnish highways within membrane, and thus achieve high gas permeability. Meanwhile, the favorable affinity of poly(ethylene glycol) (PEG) microcapsule with ether oxygen group (EO) towards CO 2 enhances the CO 2 solubility selectivity. Such integration of physical and chemical microenvironments in the as-designed PEG microcapsule affords highly enhanced CO 2 separation performance. Compared to pristine Ultem®1000, the membrane with 2.5 wt% PMC loading exhibits 310% increment in CO 2 permeability and 22% increment in CO 2 /N 2 selectivity, which shows the promising prospects of designing PEG-containing microcapsules as the filler of MMMs for CO 2 capture.
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DOI
高影响因子
JOURNAL OF CHEMICAL THERMODYNAMICS
·
2022
·
IF 3.269
An Huang,Yanqiong Bao,Houpei Li,Yu Liu,Xiong Zheng,Guangzhao Qin
Binary mixtures of ethylene glycol and water are widely used as working fluids in many areas, and the study of thermal conductivity is crucial in the determination of the heat transfer properties of related systems. In this paper, the thermal conductivity of these binary mixtures at a series of ethylene glycol concentrations (0 to 100 wt%) is measured experimentally using a transient hot-wire system at evaluated temperature and pressure range from 293–533 K and 0.1–15.0 MPa. Moreover, the experimental data are fitted into an equation as a function of temperature, pressure, and concentration, the average absolute deviation and maximum deviation between fitted values and experimental data are 0.29 % and 1.05 %, respectively, which shows that this equation describes our data very well. Furthermore, available experimental data in the literature are collected and the comparisons between literature data and our data are analyzed, our data agree well with most literature data. This work is expected to promote the use of binary mixtures of ethylene glycol and water as heat transfer working fluids in industries.
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DOI
高影响因子
BIOMACROMOLECULES
·
2021
·
IF 6.988
Wenzhi Wang,Jiawen Wang,Ge Hong,Lina Mao,Na Zhu,Tianjun Liu
Highly tumor-tissue-selective drugs are a prerequisite for accurate diagnosis and efficient photodynamic therapy (PDT) of tumors, but the currently used fluorescent dyes and photosensitizers generally lack the ability for high accumulation and precise localization in tumor tissues. Here we report that monomethoxy polyethylene glycol (MPEG)-modified zinc phthalocyanine (ZnPc) can be selectively accumulated in multiple tumor tissues, and that the selectivity is controlled by the chain length of MPEG. MPEG-monosubstituted ZnPcs with different chain lengths were synthesized, among which the shorter chain (mw < 2k)-modified ZnPc did not show tumor tissue selectivity, while MPEG2k–5k-substituted ZnPc could be rapidly and selectively accumulated in H22 tumor tissues in mice after intravenous injection. Especially, MPEG4k-Pc showed the best tumor tissue selectivity with a tumor/liver (T/L) ratio of 1.7–2.2 in HepG2, MDA-MB231, AGS, and HT-29 tumor-bearing mice. It also exhibited potent photodynamic therapy effects after one PDT treatment, and tumor growth was significantly inhibited in H22-bearing mice with an inhibition rate over 98% and no obvious toxicity. Consequently, MPEG-modified ZnPc could serve as a potential platform for selective fluorescence imaging and photodynamic therapy of multiple tumors.
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DOI
高影响因子
Journal of Thermal Science
·
2023
·Vol. 33
·期 1
·383-393
·
IF 2.5
Dai Zhaofeng,She Xiaohui,Shao Bohan,Yin Ershuai,Ding Yulong,Li Yongliang,Zhang Xiaosong,Zhao Dongliang
Plastic crystal neopentyl glycol (NPG) exhibits colossal barocaloric effect with high entropy changes. However, their application is restricted in several aspects, such as low thermal conductivity, substantial supercooling effect, and poor springback properties. In this work, multi-walled carbon nanotubes (MWCNTs) with ultra-high thermal conductivity and high mechanical strength were selected for performance enhancement of NPG. The optimal mixing ratio was determined to be NPG with 3 wt% MWCNTs composites, which showed a 6 K reduction in supercooling without affecting the phase change enthalpy. Subsequently, comprehensive performance of the composites with optimal mixing ratio was compared with pure NPG. At 40 MPa, 390 J·K −1 ·kg −1 change in entropy and 9.9 K change in temperature were observed. Furthermore, the minimum driving pressure required to achieve reversible barocaloric effect was reduced by 19.2%. In addition, the thermal conductivity of the composite was increased by approximately 28%, significantly reducing the heat exchange time during a barocaloric refrigeration cycle. More importantly, ultra-high pressure release rate resulted in a 73.7% reduction in the springback time of the composites, offering new opportunities for the recovery of expansion work.
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DOI
高影响因子
JOURNAL OF SURFACTANTS AND DETERGENTS
·
2017
·Vol. 20
·期 6
·1281-1290
·
IF 1.45
Zhang Qian,Li Sha,Zhang Fanglei,Wei Xilian,Liu Min,Liu Jie,Sun Dezhi
The self-assembly behaviors of mixtures of sodium bis(2-ethylhexyl) sulfosuccinate (AOT) and didodecyl dimethylammonium bromide (DDAB) in polyethylene glycol 200 (PEG 200) and in water were investigated by surface tension, conductivity, steady-state fluorescence and dynamic light scattering (DLS) methods. The results show that the oppositely charged binary surfactant system can form micelles in PEG 200; the critical micellization concentration (CMC) decreases for the binary system versus those of either surfactant alone. Although there is no charge screening in the PEG 200 system, the CMC values significantly increase and the system does not precipitate or show turbidity at any proportion of AOT to DDAB, while a multiphase composition gap exists in water due to the strong electrostatic attraction. It is speculated that the weak polarity of PEG 200, the decreased solvophobic interaction between the alkyl chain and PEG 200, and the loose structure of the resulting micelles might explain the experimental phenomena. Observed from the values of the interaction parameter, it is found that there are a strong attractive interaction and a synergistic effect between AOT and DDAB in aqueous solution, in comparison, the synergy between them in PEG 200 is very weak.
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DOI
高影响因子
Journal of Macromolecular Science Part A-Pure and Applied Chemistry
·
2014
·
IF 0.74
Yunyan Xue,Dandan Ma,Tianzhu Zhang,Siyan Lin,Shengnan Shao,Ning Gu
In this study, a series of comb-like methoxy polyethylene glycol (MPEG) functionalized polyurethanes (PUs) (PU–g–MPEG) were successfully prepared via ‘click’ chemistry and polyaddition reaction. The copper catalyzed Huisgen 1,3-dipolar cycloaddition was firstly carried out between 3,5-bis(hydroxymethyl)-1-propargyloxybenzene (PBM) and methoxy polyethylene glycol azide (MPEG–N3) to obtain MPEGylated diol PBM (MPEG–PBM). Then, the comb-like PUs having MPEG located on the backbones (PU–g–MPEG) were synthesized through the polyaddition of MPEGylated diol PBM and hexamethylene diisocyanate (HDI). Fourier transform infrared (FTIR), 1H NMR spectroscopy, size exclusion chromatography (SEC), and thermo gravimetric analyses (TGA) were used to characterize these synthesized MPEG-functionalized comb-like PUs (PU–g–MPEG). Compared with PU without MPEG grafts, PU–g–MPEG show a better wettability.
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DOI
高影响因子
Journal of Macromolecular Science Part B-Physics
·
2021
·
IF 1.504
Zhuodong Liu,Zhengguang Heng,Haoruo Zhang,Ji Zhou,Yang Chen,Mei Liang,Huawei Zou
A series of high comprehensive performance composite phase-change materials (PCMs) were designed and prepared by a physical blending and evaporation method. Cellulose nanofibers (CNF) were introduced as supporting materials to keep the shape of polyethylene glycol (PEG) stable during the phase-change process, and expanded graphite (EG) was used to synergize with the PEG to enhance the infrared thermal stealth performance. The comprehensive performance and structure–property relationships of the composite PCMs were investigated by means of various characterization techniques. The CNF30/PEG69/EG1 composite exhibited the best comprehensive performance: a high PEG melting enthalpy of 144.3 J/g due to a high crystallinity of the PEG, good thermal stability, a shape stabilization effect and superior IR attenuation performance. The EG was proved to be an effective supporting material which contributed to the enhancement of the crystallinity of PEG, and played an important role as a nucleating agent in the crystallization process of the PEG. The synergistic effect of PEG and the small amount of EG gave the composites excellent infrared stealth performance.
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DOI
高影响因子
危险品化学品经营许可证（带存储）