Journal of Energy Storage
·
2020
·
IF 3.762
Yi Zhao,Xuelai Zhang,Xiaofeng Xu,Shihua Zhang
According to the temperature requirements of pharmaceutical cold chain logistics, the aim is to develop phase change materials with a phase transition temperature of 2 °C ~ 8 °C. In this study, a mixed solution of tetradecane (TD) and lauryl alcohol (LA) was selected as the base liquid. In view of the low thermal conductivity of organic phase change materials, expanded graphite (EG) was added to TD-LA to improve the thermal conductivity. This study also developed a new type of cold storage equipment for vaccine, which can monitor the temperature of the vaccine in real time on the user's mobile phone. The cold storage equipment is equipped with a special cold storage box of vaccine. The vaccine reagent tube can be placed in the storage hole of the cold storage box. It can ensure that the cold storage agent in the cold storage box releases and transmits the cold quantity more evenly among the goods. Coupling the developed low temperature phase change material with the cold storage equipment can ensure that the vaccine is always in the required low temperature environment in the process of transportation for a long time to ensure its quality.
研究领域:
材料科学
·
生物医药工程
✓ 已验证
产品关联
DOI
高影响因子
APPLIED ENERGY
·
2024
·
IF 10.1
Kai Liu,Ling Wang,Zhifeng He,Pengcheng Lin,Ying Chen
Phase change cold storage , as an emerging cold chain method of maintaining a low-temperature environment and effectively ensuring the quality of biochemical reagents, is extensively utilized because of its benefits of high energy density , low cost, energy conservation and environmentally friendly mode. However, the low thermal conductivity of working medium affects its cold charging/discharging rate and operating efficiency. Meanwhile, the high leakage characteristic in the phase change process leads to a decrease of cold storage capacity and contamination of items. This work proposes the efficient utilization of cold energy enabled by leakage-free phase change cold storage brine gels with extraordinary high thermal conductivity towards biochemical reagent cold chain. Phase change thermal storage gel is prepared by confining brine in the sodium polyacrylate‑calcium alginate network and porous adsorption of expanded graphite . The prepared materials present leak free characteristics and almost 100% mass retention rate. Expanded graphite addition enables the thermal conductivity increase from 0.542 W m −1 K −1 to an extremely high value of 2.766 W m −1 K −1 (an increase of 510%). The enthalpy value of the cold storage brine gel is as high as 144 Jg −1 , stably releasing cold at around −24 °C. By regulating the distribution of cold storage working medium, the minimum temperature difference inside the apparatus can be reduced from 6.7 °C to about 1 °C. Finally, performance-enhancing phase change cold storage materials and apparatus in the cold chain of biological reagents is fruitful, effectively providing a long-lasting and uniform low-temperature environment.
研究领域:
材料科学
·
生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
Journal of Energy Storage
·
2024
·
IF 8.9
Shenhui Tan,Xuelai Zhang
In this paper, a novel binary eutectic phase change material (DA-HDL EPCM) and ternary composite phase change material (HDL-DA-CA/EG CPCM) are proposed for the temperature range of 10–20 °C and 2–8 °C. Compared with traditional ternary phase change materials (2–8 °C), CPCM has higher latent heat value and economic performance. The ternary CPCM uses dodecyl alcohol (DA) and 1,6 hexadiol (HDL) as the main eutectic phase change energy storage materials, and n-capric acid (CA) as the temperature modifier. A kind of HDL-DA-CA/EG composite phase change material (CPCM) was prepared by vacuum adsorption method, which solved the problems of low thermal conductivity and easy leakage of ternary CPCM. Differential scanning calorimeter (DSC), scanning electron microscope (SEM), thermal property analyzer (TCA) and high and low temperature alternating test chamber were used to characterize the thermal properties, microstructure, thermal conductivity and cyclic stability of related PCM. Experimental results: The final ratio of CPCM is 43.61%DA + 25.6%HDL + 23.08%CA + 7.7%EG, the phase transition temperature is 2.9 °C, the latent heat of phase transition is 181.3 J/g, and the thermal conductivity is 1.90 W/mK. After 500 cycles, the phase transition temperature of CPCM has little change, and the latent heat of phase transition is 169.8 J/g, which is reduced by 6.34 %, not more than 10 %, and has good stability. Finally, the simulation application data show that CPCM has a good application prospect in fruit and vegetable cold chain logistics.
研究领域:
材料科学
·
食品科学
·
物流工程
✓ 已验证
产品关联
DOI
高影响因子
HEAT AND MASS TRANSFER
·
2020
·Vol. 56
·期 9
·2769-2777
·
IF 1.867
Zhang Shihua,Zhang Xuelai,Xu Xiaofeng,Zhao Yi
The effect of nanomaterials on the thermal behavior of Decanoic-Caprylic Acid (DA-CA) binary eutectic mixture was investigated experimentally. Different high thermal conductivity nanomaterials, including nano-sized iron oxide (Fe 2 O 3 ), nano-sized copper (Cu), hydroxylated multi-walled carbon nanotubes (MWCNT-OH), and dispersant Span-60, were added into DA-CA, respectively. The nanomaterial-enhanced phase change materials (NePCMs) were prepared by the ultrasonic oscillation method. The effects of nanomaterials on the cool storage performance of DA-CA were studied from the types and concentrations of nanomaterials. The experimental results showed that as the nanomaterials mass concentration increased, the thermal conductivity increased first and then gradually stabilized. The thermal conductivity trend for the composites added to the nanomaterials was: 0.40 g·L −1 Fe 2 O 3 > 0.10 g·L −1 MWCNT-OH > 0.30 g·L −1 Cu. DA-CA + 0.40 g·L −1 Fe 2 O 3 exhibited the best thermal properties, and its thermal conductivity increased by 36.8%, and the thermal storage time decreased by 38%. After 500 times thermal stability test, the NePCMs still maintained the appropriate phase change temperature and high latent heat. Therefore, this material has potential as part of the cold chain logistics for fruit and vegetable preservation.
研究领域:
材料科学
·
热能工程
✓ 已验证
产品关联
DOI
高影响因子
Frontiers in Nutrition
·
2022
·
IF 6.59
Qian Yun-Fang,Yu Jia-Yi,Yu Ying-Jie,Xie Jing,Yang Sheng-Ping
In order to study the effects of the compound preservatives (curcumin and piperine (CP)) and vacuum packaging (VP) on the quality of salmon during cold chain logistics suffered from temperature abuse, the physiochemical indexes (texture, water holding capacity (WHC), total volatile basic nitrogen (TVB-N), thiobarbituric acid reactive substances (TBARS), free amino acids (FAA) contents), microbial indicators (total mesophilic bacteria count (MBC), total psychrotrophic bacteria count (PBC), H2S-producing bacteria count (HSBC)) were determined, and the moisture changes were explored by near-infrared (NIR) spectroscopy and low-field nuclear magnetic resonance (LF-NMR). The results showed that the treatment of curcumin and piperine in combination with vacuum packaging could maintain the quality of salmon suffered from temperature abuse most effectively. At the end of storage, the MBC of VP+CP was only 4.95 log CFU/g, which was about 1 log CFU/g lower than the control sample stored at the same condition. The combined treatment also retarded the increase of TVB-N, TBARS, and the decrease of hardness, springiness, and a* value, as well as water migration in salmon, contributing to higher water holding capacity and better appearance. Besides, VP+CP retarded the decrease of free glutamate, which contributed to umami taste. Due to the biological activity and safety of the preserves, the combined treatment could be a promising method for preservation of seafood.
研究领域:
食品科学
·
生物化学
✓ 已验证
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2023
·
IF 9.5
Kai Liu,Zhifeng He,Yingying Luo,Pengcheng Lin,Ying Chen
Cold chain logistics plays an extremely important role in the storage and transportation of perishable products. Nowadays, phase change materials (PCMs) have been applied in emerging cold chain logistics to overcome the problems of low stability, high energy consumption, and high cost in mechanical refrigeration-based cold chain logistics. Mass production of high-performance phase change cold storage materials toward cold chain logistics is still a major challenge. Herein, self-repairing brine phase change gels (BPCMGs) massively fabricated by ionic cross-linking, covalent cross-linking, and hydrogen bond cross-linking are proposed. Brine containing 23.3% sodium chloride (NaCl) is selected as the phase change component because its phase change temperature is suitable for the cold storage demand of aquatic products. The proposed BPCMGs demonstrate superior thermophysical properties in terms of no phase separation, no supercooling, high form stability, high latent heat, high thermal conductivity, high cyclic stability, and high self-repairing rate. Meanwhile, the BPCMGs present high cost-effectiveness. Given these advantages, BPCMGs are utilized to assemble smart cold storage equipment for the storage and transportation of aquatic products. The cold storage time reaches 36.73 h for aquatic products when the stored cold energy is 364078 J. The location and temperature of the refrigerated products are monitored in real-time. The state-of-the-art BPCMGs provide diversified possibilities for the advanced smart cold chain.
研究领域:
材料科学
·
冷链物流
·
能源存储
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Energy Storage
·
2022
·
IF 8.907
Kai Liu,Zhifeng He,Pengcheng Lin,Xi Zhao,Qiyang Chen,Hua Su,Yingying Luo,Hongjiao Wu,Xinxin Sheng,Ying Chen
Cold chain logistics is an important technology to ensure the quality and preservation of food, drugs and biological samples. In this work, novel brine phase change material gels (BPCMGs) are proposed by loading the eutectic brine in super absorbent polymer (SAP) to realize the highly-efficient cold energy storage towards the cold chain transportation. Potassium chloride (KCl) and ammonium chloride (NH 4 Cl) are dissolved in water to form the eutectic brine PCM on account of its phase change temperature near −21 °C for the refrigerated transport of aquatic products and biological samples. SAP with excellent brine adsorption capacity can provide the free-standing feature for the BPCMGs. The resulted BPCMGs demonstrate eliminated supercooling, high latent heat of 230.62 Jg −1 , high thermal conductivity of 0.589 Wm −1 K −1 and high cost-effectiveness of 7.63 × 10 −6 $J −1 . The BPCMGs also possess stable thermophysical properties after 200 cycles. Taking advantages of the above merits, the BPCMGs are applied in the cold chain logistics of aquatic products and biological samples. The cold storage times reach 21.44 h and 16.37 h for aquatic products and biological samples when the stored cold energy is 691,800 J. Furthermore, the temperatures and locations of the cold storage box can be real-time monitored remotely by equipping with temperature sensor , GPS positioning system and a smart phone. This work creates a state-of-the-art alternative for the next-generation cold energy storage materials and cold energy storage equipment.
研究领域:
材料科学
·
物流工程
·
生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
·
2023
·
IF 2.3
Qin Qin,Cao Weiqi,Zhaxi DaWa,Chen Xianyong,Andreeva Daria V.,Chen Kefan,Yang Shuai,Tian Hao,Shaker Majid,Jin Zhan,Novoselov Kostya S.
Phase change materials (PCMs) offer efficient solutions for energy sustainability. Here, we used 1-decanol, expanded graphite (EG) with high thermal conductivity, and silica aerogel (SA), which is often used for thermal insulation protection, to prepare composite PCMs (EG-PCM and SA-PCM) with stable shape through the vacuum absorption method. The leakage rate test after heat treatment determined the optimum contents of EG and SA in the composite PCMs to be 9 and 14 wt.%, respectively. Even after 220 heating/cooling cycles, the fabricated composite PCMs still maintain good thermal stability. The thermal conductivity enhancement of EG-PCM and SA-PCM to 16.09 times and 1.21 times of the neat PCM, respectively. Moreover, we tested the prepared two composite PCMs by yogurt preservation experiments in a cold chain transport portable box, which proved that they could effectively maintain the temperature and acidity of yogurt for several hours without any cooling system. Based on these results, EG-PCM and SA-PCM have broad application prospects in cold chain transport of temperature-sensitive products such as food, medicine, and vaccine.
研究领域:
材料科学
·
能源工程
·
食品科学
✓ 已验证
产品关联
DOI
高影响因子
RENEWABLE ENERGY
·
2021
·
IF 8.001
Lu Liu,Xuelai Zhang,Xiaofeng Xu,Xiangwei Lin,Yi Zhao,Lingeng Zou,Yifan Wu,Huifan Zheng
This research aims to explore a novel PCM that can satisfy the needs of vaccine cold chain logistics temperature zone (2–8 °C), with decyl alcohol (DA) and lauric acid (LA) chose to be eutectic . Considering the thermal conductivity and leakage of materials, DA-LA/EG composite phase change material (CPCM) with a mass ratio of 12:1 is prepared by the vacuum adsorption method. The thermal properties of DA-LA/EG CPCM are analyzed by DSC , cooling curve, Hot Disk, SEM etc. From the DSC graphs of DA-LA eutectic phase change material (EPCM), it is found that there is difference between the melting temperature and solidification temperature, which is defined as phase change hysteresis . The results indicate that the phase transition temperature of DA-LA/EG CPCM is 2.08 °C, with high latent heat and thermal conductivity of 188.71 J g −1 and 1.7527 W m −1 K −1 , respectively. Due to the unique porous structure of EG, the thermal conductivity is 13.75 times higher than that without EG, which leads to the phase transition time shortened by 79.47%. Furthermore, DA-LA/EG CPCM shows excellent cyclic stability and chemical stability after 500 high-low temperature alternating tests. From TGA, the decomposition temperature of DA-LA/EG CPCM is 186.55 °C, higher than the working temperature range. The applicability is demonstrated by using the CPCM into an incubator . Overall, DA-LA/EG CPCM has good application prospects in vaccine cold chain logistics.
研究领域:
材料科学
·
生物医学工程
✓ 已验证
DOI
高影响因子
Sensors & Diagnostics
·
2024
·
IF 3.5
Qingliu Wu,Songjia Luo,Lu Wang,Baolei Dong,Hao Qu,Lei Zheng
Given the susceptibility of Severe Acute Respiratory Syndrome Coronavirus (SARS-CoV-2) and Norovirus (NoV) to survive in cold chain food, thereby posing significant public health risks, we present a novel approach for biosensor development utilizing a graphene field-effect transistor (GFET) modified with nucleic acid aptamers. The biosensor’s innovative design incorporates 1-pyrenebutyric acid N-hydroxysuccinimide ester (PBASE) as a coupling agent to facilitate the attachment of nucleic acid aptamers onto channel graphene. This modification induces a redistribution of charge on the graphene surface, resulting in a shift of the Dirac point upon target capture by the nucleic acid aptamer. Through this pioneering methodology, we successfully engineered SARS-CoV-2 GFET and NoV GFET biosensors capable of detecting trace amounts of SARS-CoV-2 and norovirus within a rapid 5-minute timeframe, showcasing detection limits of 33 fg/mL and 6.17 pg/mL, respectively. Subsequently, we applied these sensors to detect SARS-CoV-2 in frozen meat and norovirus in shellfish, yielding promising results with excellent specificity and stability. This groundbreaking sensing mechanism holds significant promise for the detection of foodborne viruses across a diverse range of food samples.
研究领域:
生物传感器技术
·
病毒检测
·
食品安全
✓ 已验证
产品关联
DOI
高影响因子
ACS Nano
·
2023
·
IF 17.1
Chao Huang,Yuanyuan Shang,Jiachuan Hua,Yadong Yin,Xuemin Du
Vaccines are undoubtedly a powerful weapon in our fight against global pandemics, as demonstrated in the recent COVID-19 case, yet they often face significant challenges in reliable cold chain transport. Despite extensive efforts to monitor their time–temperature history, current time–temperature indicators (TTIs) suffer from limited reliability and stability, such as difficulty in avoiding human intervention, inapplicable to subzero temperatures, narrow tracking temperature ranges, or susceptibility to photobleaching. Herein, we develop a class of structural color materials that harnesses dual merits of fluidic nature and structural color, enabling thermal-triggered visible color destruction based on triggering agent-diffusion-induced irreversible disassembly of liquid colloidal photonic crystals for indicating the time–temperature history of the cold chain transport. These self-destructive structural color liquids (SCLs) exhibit inherent irreversibility, superior sensitivity, tunable self-destructive time (minutes to days), and a wide tracking temperature range (−70 to +37 °C). Such self-destructive SCLs can be conveniently packaged into flexible TTIs for monitoring the storage and exposure status of diverse vaccines via naked-eye inspection or mobile phone scanning. By overcoming the shortcomings inherent in conventional TTIs and responsive photonic crystals, these self-destructive SCLs can increase their compatibility with cold chain transport and hold promise for the development and application of the next-generation intelligent TTIs and photonic crystals.
研究领域:
材料科学
·
生物医学工程
·
光学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF FOOD ENGINEERING
·
2021
·
IF 5.354
Tingting Gao,Da-Wen Sun,You Tian,Zhiwei Zhu
A time-temperature indicator (TTI) based on gold-silver core-shell nanorods (Au@Ag NRs) was developed to monitor the quality degradation of pasteurized milk in the cold chain. Changes of longitudinal plasmon peak wavelength, micro-morphology and colour of the Au@Ag NRs TTI at 4 °C, 15 °C, 25 °C, and 35 °C were investigated, and kinetic characteristics and temperature dependence of the TTI were studied. Pasteurized milk was also stored at the same temperatures, and changes of titratable acidity (TA), pH values and total bacterial count (TBC) were determined and fitted to characterize the kinetic properties of each quality attributes at different storage temperatures. Besides, the Arrhenius equation was used to calculate the activation energy ( E a ) values, among which the Au@Ag NRs TTI, TA, pH and TBC showed E a values of 70.36, 65.67, 127.87 and 52.33 kJ/mol, respectively. Results showed that the TTI and TA possessed more similar E a values, suggesting that the TTI could predict the TA of pasteurized milk in the cold chain more accurately. Furthermore, a dynamic temperature test was performed to verify the applicability and reliability of the TTI. Temperature accumulation effects were calculated and effective temperatures ( T eff ) of the TTI and the pasteurized milk were determined as 287.4 K and 287.3 K, respectively, which indicated high sensitivity and good applicability of the TTI for quality monitoring of the real milk system, showing great application potentials for cold chain intelligent labels.
研究领域:
食品科学
·
纳米技术
✓ 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）