JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION
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2022
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IF 3.682
Chengyan Zhao,Qiusheng Song,Lin Zhu,Haihong Ma
In the present study, a novel nanogel of HPC-PMAA/PpIX with thermo- and pH sensitive performance and its application in cancer photodynamic therapy is reported. HPC-PMAA/PpIX nanogels were prepared by free radical polymerization method with HPC as template, hydroxypropyl cellulose (HPC), methyl acrylic acid (MAA), protoporphyrin IX (PpIX) and N,N′-methylene bisacrylamide (BIS) as raw materials. The as-prepared nanogels were characterized by Fourier transform infrared (FTIR), photoluminescence (PL) and UV–visible spectrophotometer (UV–vis), dynamic light scattering (DLS) and transmission electron microscopy (TEM). PL and UV–vis spectra demonstrate that PpIX is incorporated into HPC-PMAA by covalent bonds, and its aggregation is prevented. Moreover, the as-prepared nanogels can be dispersed in water over 1 week, significant singlet oxygen can be produced under irradiation of laser. With tumor cell of HepG2 as model cell, the nanogels are biocompatible with cell viability of >85% even at high concentrations of the PpIX in vitro. In addition, the HPC-PMAA/PpIX nanogels show photo-dependent toxicity in the concentration range of 10 µg/mL of PpIX, suggesting that HPC-PMAA/PpIX nanogels have potential for the treatment of photodynamic therapy (PDT).
研究领域:
生物医学工程
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癌症治疗
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材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
OPTICAL MATERIALS
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2024
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IF 3.8
Liangmiao Zhang,Changzheng Pan,Jian Wu,Yi Du,Fang Xia,Yanfeng Gao
Hydrogels demonstrate significant potential as materials for fabricating energy-saving smart windows. Nevertheless, their liquid nature poses challenges and renders them susceptible to leakage during operation. In this study, we developed an HPC-PAA-PAM semi-solid hydrogel through a two-step polymerization process at 80 °C, with acrylamide serving as the curing agent. The resulting hydrogel exhibited a precisely tunable lower critical solution temperature (LCST) spanning from 31.5 °C to 36.2 °C. Additionally, we constructed double-layered glass-encapsulated HPC-PAA-PAM semi-solid hydrogel smart windows, which demonstrated remarkable optical transmittance (T lum = 88.3 %), excellent solar energy modulation (ΔT sol = 47.9 %), and remained stability through 100 heating and cooling cycles. Thermal regulation tests conducted in model houses revealed outstanding heat-shielding performance of these hydrogel smart windows, surpassing conventional double-glazed windows and double-glass encapsulated water windows. Notably, after 90 days of outdoor exposure, the HPC-PAA-PAM semi-solid hydrogel smart window experienced only a minimal reduction in solar modulation, underlining its exceptional weather durability in practical applications. Consequently, the HPC-PAA-PAM semi-solid hydrogel presents substantial promise for the production of smart windows, particularly suited for energy-efficient buildings in tropical and subtropical regions, where it can effectively prevent the intense summer sun's heat from penetrating indoors, fostering a more pleasant indoor temperature.
研究领域:
材料科学
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能源工程
✓ 已验证
产品关联
DOI
高影响因子
NANO
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2019
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IF 1.293
Ben Liu,Qiusheng Song,Qiancheng Zhang,Haihong Ma,Ziwen Zhang,Dapeng Wang
In this study, a kind of novel rare-earth nanocrystals/hydroxypropylcellulose–poly (acrylic acid) (HPC–PAA) complex fluorescent nanogel, its responsive behavior to environmental temperature and pH value were reported. For preparation, with HPC being used as template, HPC–PAA nanogel was first synthesized by polymerization and crosslinking reaction of acrylic acid (AA) in water solution. In the process, a redox initiator, which composed of ammonium persulfate (APS) and N,N,N′,N′-tetramethylethylenediamine (TEMED), was used to initiate the reaction. Then, the as-prepared nanogel reacted with Ce(NO 3 ) 3 and NH 4 F solution successively, and a novel CeF 3 nanocrystals/HPC–PAA complex nanogel was fabricated. The microstructure of the nanogel was characterized by Fourier transform infrared (FTIR), X-ray diffraction (XRD), Thermogravimetric (TG) and Transmission electron microscopy (TEM). The environmental sensitivity of the nanogel was investigated by photoluminescence (PL) and UV–Visible spectrophotometer (UV–Vis). The thermo- and pH-sensitive fluorescence were studied by PL at various temperatures and pH values; besides, the behavior of drug loading and release was researched by PL with a famous antibiotic of Ibuprofen as model drug. The results show that the PL intensity of the nanogel was largely affected by environmental temperature, or content of Ibuprofen loaded in the nanogel. The as-prepared nanogel can be used as useful sensitive material to detect temperature and pH value change, and drug loading or release property of Ibuprofen can be detected by PL emission of the nanogels conveniently.
研究领域:
材料科学
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生物医学工程
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药学
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
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2022
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IF 5.532
Liangmiao Zhang,Yi Du,Hui Xia,Fang xia,Guang Yang,Yanfeng Gao
Hydroxypropyl cellulose (HPC) hydrogel is a promising material for fabricating energy saving smart windows. However, its lower critical solution temperature (LCST = 42 °C) is much higher than comfortable room temperatures. In this work, we applied surface polymerization of acrylic acid (AA) monomers on HPC chains and synthesized HPC-polyacrylic acid (PAA) hydrogels with precisely controllable LCST in the range of 23.0–42.0 °C. The fabricated HPC-PAA hydrogel smart windows exhibited excellent T lum , 22 °C of 91.8% and ΔT sol , 22–40 °C of 73.7%, outperforming VO 2 hydrogel composites and photothermal nanoparticles doped hydrogel smart windows. Meanwhile, cesium tungsten bronze (Cs 0.32 WO 3 ) photothermal nanoparticles can be introduced to the HPC-PAA hydrogel matrix, and the near infrared (NIR) shielding ability of Cs 0.32 WO 3 allowed significant reduction of NIR transmittance of the smart windows from 81.7% to 41.6% at 22 °C, and from 19.3% to 3.6% at 40 °C. Temperature regulation tests in model houses revealed outstanding heat-shielding performance of Cs 0.32 WO 3 (0.4 wt %)/HPC-PAA hydrogel smart windows, especially compared with ordinary double-glass windows. Furthermore, the HPC-PAA hydrogel and Cs 0.32 WO 3 (0.4 wt %)/HPC-PAA hydrogel are non-toxic, biocompatible, low-cost, suggesting their suitability for energy-saving smart window applications.
研究领域:
材料科学
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能源与环境科学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Energy Materials
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2021
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IF 6.024
Liangmiao Zhang,Hui Xia,Fang Xia,Yi Du,Yupeng Wu,Yanfeng Gao
Hydroxypropyl cellulose (HPC) hydrogels exhibit thermal-responsive transparency change due to their temperature-sensitive miscible–immiscible transitions, making them promising thermochromic materials for fabricating energy-saving smart windows. However, their transition temperatures, named lower critical solution temperature (LCST), are too high for building window applications, and it is also challenging to reduce LCST to comfortable room temperature range (e.g., 26–28 °C) in hot seasons. In this work, we report smart windows prepared using poly(acrylic acid) (PAA)-modified HPC hydrogels and demonstrate that the LCST of the resulting HPC/PAA hybrid hydrogels can be effectively tuned by solution pH, from 44 to 10 °C with decreasing pH from 6.0 to 1.0. At pH 2.5, an optimized LCST at 26.5 °C has been achieved. The sandwich-structured smart window, composed of two glass panes and an optimized HPC/PAA hydrogel in between, shows a high visible-light transmittance (Tlum = 90.1%), excellent solar energy modulation (ΔTsol = 47.5%), outstanding heat-shielding performance, and excellent stability after 100 heating and cooling cycles. These optical properties outperform the reported thermosensitive cellulose-based materials, vanadium oxide based smart windows, and other thermosensitive hydrogel-based smart windows. Furthermore, HPC/PAA hydrogels are easy to prepare, nontoxic, biocompatible, low-cost, and environmentally friendly, making them very promising materials for energy-saving and climate-adaptable smart windows.
研究领域:
材料科学
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化学工程
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能源效率
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建筑技术
✓ 已验证
产品关联
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
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2015
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IF 4.642
Taotao Qiang,Xin Gao,Jing Ren,Xiaoke Chen,Xuechuan Wang
This paper discusses the terminal carboxyl groups of the hyperbranched polymer (HPAE-C) complexing Al3+ in aluminum sulfate to synthesis a new chrome-free tanning agent (HPC-Al). The molecular structure of HPC-Al was characterized and analyzed by IR, UV, and XRD. In the tanning process, the results indicate the following: (1) The shrinkage temperature of HPC-Al tanning leather is 79.5 °C. (2) The shrinkage temperature is greater than 95 °C after chrome retanning and about 87 °C after zirconium retanning. (3) It has greatly improved the fullness, softness, and physical-mechanical properties of the leather. Meanwhile, the environmental impact assessment after tanning was evaluated. The results show that biochemical oxygen demand, total dissolved solids, and total suspended solids are reduced. This indicates that the use of HPC-Al as a tanning agent, with chrome-free or chrome-less tanning, can be achieved.
研究领域:
材料科学
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环境科学
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皮革化学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Lizhi Song,Wei‐Jing Chen,Jiarui Huang,Dinggen Hu,Xingxiang Ji,Li Hua,Zhaoqing Lu
With the rapid development of intelligent electronic technology, there have been increasing interests and demands of wearable sensors. In this emerging field, some issues of sensing materials are still need to be well-addressed, such as inadequate flexibility, poor biocompatibility, and delamination of conductive components, etc. In this study, a composite ion-conductive hydrogel with incorporated hydroxypropyl cellulose (HPC) was prepared. This composite hydrogel maintains excellent mechanical properties and biocompatibility. Moreover, the hydrogel exhibits zero crosstalk good humidity sensing as well as temperature responsiveness, and effectively avoid signal crosstalk. The hydrogel can accurately detect environmental humidity changes and real-world scenarios like oral respiration through variations in current. Additionally, it can respond to external temperature changes through transparency alterations, while retaining the strain-sensing capabilities of conductive hydrogels, enabling self-adhesive stress–strain sensing. Notably, HPC forms a network structure within the hydrogel system, leveraging its hydrophilic surface groups to enhance the humidity sensing performances. This research explores the structural distribution of HPC within the hydrogel system, offering a novel strategy for the development of HPC-added hydrogel sensors, which hold significant potentials for applications in flexible wearable devices.
研究领域:
材料科学
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生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
MACROMOLECULAR CHEMISTRY AND PHYSICS
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2025
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IF 2.7
Yanling Yang,Yining Shi,Yue Shi
Smart windows with adjustable optical properties for energy-saving applications have received increasing attention. In this study, an anisotropic single-domain structure is successfully prepared by shearing-oriented hydroxypropyl cellulose (HPC) in poly(2-acrylamido-2-methylpropanesulfonic acid) (PAMPS) hydrogel network. This composite hydrogel can respond to ambient temperature and solar radiation in the visible and near-infrared light regions for smart window applications. By precisely controlling the component of the composite hydrogel, the cloud point temperature ( T cp ) of the smart window can be significantly tuned from a very high value to below the comfortable temperature for the human body. For example, with 10 wt.% PAMPS and 42 wt.% HPC, the crosslinking hydrogel demonstrates a stable single-domain structure and relatively low T cp . With the addition of NaCl, T cp can be further reduced to even below the human comfort temperature. The oriented composite hydrogel showed excellent durability, flexibility, and thermal radiation shielding under the sunlight simulator with tunable T cp . These properties make the HPC/PAMPS composite hydrogel have a broad application prospect in the realm of energy-efficient building smart windows and effectively improve the comfort of indoor environments with different demands.
研究领域:
材料科学
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能源技术
✓ 已验证
DOI
高影响因子
POLYMER ENGINEERING AND SCIENCE
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2025
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IF 3.2
Xihao Yang,Xiuling Lin,Shuo Wang,Yong Chen,Xiangyu Dai
The selection of appropriate materials for adjusting the properties of polyvinyl alcohol (PVA) electrospun fiber membrane is an essential objective. In this study, a novel PVA/hydroxypropyl cellulose (PVA/HPC) composite fiber membrane was fabricated through electrospinning technology. The water-soluble HPC served as an additive to modify the structures and properties of the PVA electrospun fiber membrane. The electrospinning process was optimized with an 8% PVA solution containing different contents of HPC additive, achieving continuous fiber formation at 20 kV applied voltage with a 16 cm collector distance, which significantly improved the spinnability of PVA solutions. The addition of HPC can improve the mechanical properties of the PVA fiber membrane. The PVA/HPC fiber membrane displayed an ideal capacity for sustained drug release and exhibited significant antibacterial activity. The P8H1.5 (PVA/HPC was 8%/1.5%) fibers, which were uniform and defect-free, demonstrated the best release effect and antibacterial activity. These results suggested that HPC is an ideal material for improving the properties of the PVA electrospun fiber membrane and that the PVA/HPC fiber membrane could be a potential antibacterial and anti-inflammatory material for medical applications.
✓ 已验证
产品关联
DOI
高影响因子
Molecular Catalysis
·
2024
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IF 3.9
Zhenzhen Wang,Encheng Liu,Zhonghua Sun,Zhihui Zhang,Mingyang He,Qun Chen,Junfeng Qian
Formic acid (FA) is of great significance given its extensive applications in various industrial fields. At present, methanol carbonylation is the main industrial production process of FA. However, this process uses two kinds of raw materials from fossil fuels and emits a large amount of CO 2 . Alternatively, converting CO 2 into FA can not only achieve the production of value-added chemicals but also effectively address environmental issues caused by CO 2 emission. To improve the low reactivity of CO 2 , homogeneous and heterogeneous catalytic systems have been widely evaluated, among which heterogeneous catalytic systems are attracting ever-increasing attention owing to their great industrialization prospects. However, some of these heterogeneous catalysts suffer from low catalytic performance. Herein, PdAu alloy nanoparticles anchored on amine-functionalized hierarchical porous carbon (PdAu/HPC-AP) were constructed to drive efficient converting of CO 2 into FA. Characterization and testing results demonstrated that the introduced Au atoms caused lattice distortion and charge redistribution on the surface of the bimetallic catalyst, facilitating the adsorption and activation of reaction molecules. Furthermore, the modification of HPC with an appropriate amount of amine ligands was found important to the chemical adsorption of CO 2 and the dispersion of PdAu NPs. The Pd 60 Au 40 /HPC-AP catalyst with the optimum synergy of alloy and ligand demonstrated excellent activity for the target reaction with a TOF value of 486 h –1 at 100 °C. Moreover, it can even catalyze the reaction at room temperature with a TOF value of 13 h –1 .
研究领域:
催化化学
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环境科学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
POLYMER DEGRADATION AND STABILITY
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2020
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IF 4.032
Jie Zhang,Dahai Zhang,Xiaogang Zhang
Irradiation by light is considered to be one of the primary sources of damage to the cellulose matrix under environmental conditions. In this study, a laminated assembly method was used to coat 2, 4-dihydroxybenzophenone (UV-0) and hydroxypropyl cellulose (HPC) on the paper surface to form a light-shielding layer. The coating material was characterized by UV–vis and FTIR. The photostability of the coating treatment was further evaluated by comparing the measured values of UV–vis, infrared spectrum, degree of polymerization, tensile strength , folding endurance and chromaticity before and after accelerated aging for two kinds of paper samples. The results demonstrated that the coating treatment could significantly enhance the photodurability of cellulose-based materials with different pigments under accelerated UV aging conditions.
研究领域:
文物保护
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
ENERGY & FUELS
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2019
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IF 3.021
Jun Zhao,Haibin Zuo,Guangwei Wang,Jingsong Wang,Qingguo Xue
To effectively utilize low-rank coal and biomass in the coking process, through the dissolution method, hypercoal (HPC) was produced, and its performance as an additional component in the coking process was also investigated. The cold strength of coke was tested using an I-type tumble tester and a universal testing machine; the carbon structure of the HPCs was examined via thermogravimetry (TG), X-ray diffraction (XRD), and Fourier transform infrared spectrometry (FT-IR) analyses. The results revealed that the thermoplastic properties of HPCs and the coke cold strength increased compared to raw coal. There is a positive linear relationship between the cold strength of coke and the order degree of the HPCs. As the biomass amount increased, the order degree of the HPCs greatly decreased, resulting in a decrease in the coke cold strength. When the amount of biomass was 20%, the caking index (G), drum strength, and compressive strength achieved maximum values of 95.21%, 83%, and 7.13 MPa, respectively. In addition, a caking mechanism of the HPCs is proposed.
研究领域:
燃料化学
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煤化工
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材料科学
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能源工程
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工业化学
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资源利用
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）