AICHE JOURNAL
·
2022
·Vol. 68
·期 8
·e17759
·
IF 4.167
Lu Liu,Yuang Zhang,Shufen Zhang,Bingtao Tang
Crude oil pipeline transportation is one of widely used ways in land transportation and comprises a large share of the world's long-distance oil transmission. Warming and heat preservation of crude oil is vital for efficient oil pipeline transportation. However, it remains a formidable challenge in coping with caused tremendous energy consumption and environmental pollution. In this work, bio-based phase change composites with superior thermal-formability and photothermal storage properties were fabricated and molded to photothermal oil transportation system using template-confined thermoforming strategy. On the basis of desirable thermal energy management ability of PEG as well as the synergistic effects between heat localization and electron nonradiative transition of Fe 2 O 3 nanoparticles, the system realized a remarkable decrease in oil viscosity and efficient transmission. Particularly, the preparation process could be facilely scaled up and indicate real application feasibility. This successful exploration offers a significant path for developing green, highly effective crude oil transportation.
研究领域:
材料科学
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能源工程
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
CARBOHYDRATE POLYMERS
·
2020
·
IF 7.182
Yanling Sun,Yunming Wang,Longhui Li,Mei Li,Yue Fu,Jiaqi Zheng,Dan Chen,Yun Zhang,Huamin Zhou
Cellulose limited by fusibility and solubility is impossible to be directly thermoformed, of which the existing progress crucially relies on larger liquids, making it hard to achieve a direct all-green manufacture. Here, we propose an innovative strategy that the surface molecular chains of cellulose nanospheres are activated at 100 °C and intertwined under 500 MPa because of the high molecular activity on the surface of nanospheres and the reduction of activation energy after ball-milling. It is confirmed that only physical changes are involved, according to infrared spectrum. Results show that applicable mechanical properties (hardness and modulus reach 0.44 and 9.66 GPa, respectively) are successfully obtained. Simultaneously, the optimum optical performance of all-cellulose substrate reaches more than 80 % at visible light. Combined with their intrinsic properties, these cellulose-based products could be potentially utilized as biomass substrates. Therefore, our innovative strategy opens up a door for the direct thermoforming of cellulose.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Zhiping Su,Lan Cui,Huanhuan Zhang,Lei Xiao,Bing Chi,Haiayan Xu,Liping Ning,Shanshan Jia,Xiaohui Wang
The increasing application of non-degradable petroleum-based plastics has resulted in serious environmental pollution . Renewable and degradable cellulose-based materials are attractive candidates to replace petroleum-based plastics. However, the strong hydrogen bond (H-bond) interactions of cellulose result in its poor plastic formability such as thermoforming. Herein, a novel and effective thermoforming method of cellulose was developed by modifying cellulose into cellulose-based polyimine vitrimer (Cel-PI) via introducing dynamic imine bonds between cellulose molecular chains using Schiff-base reaction. The presence of dynamic imine bonds enables the heat-induced dynamic exchange and stress relaxation behavior of Cel-PI networks, making the excellent thermo-processability of Cel-PI. The as-synthesized Cel-PI powders can be easily thermoformed into Cel-PI film via heat-pressing approach without adding any plasticizers . The resulting Cel-PI film exhibits high Young’s modulus (2.9 GPa), high strength (46.3 MPa), good self-healing ability, excellent waterproof capability and organic solvent stability, and high thermal stability. Moreover, it can be chemically degraded, biodegraded, and recycled. Therefore, Cel-PI represents a promising and sustainable petroleum-based plastic replacement.
研究领域:
材料科学
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环境科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
COMPOSITES SCIENCE AND TECHNOLOGY
·
2025
·
IF 9.8
Yuxin Wei,Menglong Dai,Yige Liu,Rui Hao,Shuchang Wang,Huiqun Zeng,Xinghua Hong
Biobased multifunctional composites with graphene-like fillers can be widely used in various industries, such as aerospace, automotive, and energy industries. Such organic‒inorganic composites containing biomaterials currently suffer from prolonged fabrication processes and limited functionality. Herein, a biobased composite that incorporates in situ reduced graphene oxide (RGO) onto a carbon fiber mat (CFM) is presented, which is rapidly combined with biobased polyamide (PA56) under high-temperature and low-pressure conditions to maintain the structural integrity of the three-dimensional network within the matrix, thereby enhancing its electrical and mechanical properties. As a result of these strategies, the biobased RGO/CFM/PA56 composite demonstrates significantly enhanced electrical heating performance (5 V, 126 °C) and electromagnetic shielding capability (76 dB, 0.74 mm), which is among the highest values reported for existing biobased composite materials. Furthermore, the material exhibited notable thermoelectric properties, characterized by a value of −25.3 μV K −1 . Notably, the modified composite demonstrates rapid thermal forming capabilities and possesses welding characteristics facilitated by PA56, enabling it to be recyclable and reusable. After rapid repair, the mechanical performance of the samples remains at approximately 80 %, whereas the other functionalities are maintained above 90 %. This study is the first to report biobased PA56/carbon fiber mat composites, highlighting their benefits in various applications and providing a fresh perspective on sustainable and high-performance biobased composites.
研究领域:
材料科学
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高分子科学
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纳米技术
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复合材料工程
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可持续技术
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电磁工程
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry B
·
2022
·Vol. 10
·期 37
·7650-7660
·
IF 7.571
Niping Deng,Jinghang Li,Hao Lyu,Ruochuan Huang,Haoran Liu,Chengchen Guo
Soft actuators with stimuli-responsiveness have great potential in biomedical applications such as drug delivery and minimally invasive surgery. In this study, protein-based soft actuators with magnetic actuation are fabricated using naturally occurring silk proteins and synthesized Fe3O4 magnetic nanoparticles (NPs). Briefly, magnetic silk films are first prepared by solution casting of a mixture containing silk proteins, synthesized Fe3O4 NPs, and glycerol. The molecular structures of the magnetic silk films are characterized by FTIR spectroscopy, which show that the β-sheet content in the films is about 20%. The mechanical tests show that the magnetic silk films can be stretched to over 200% under wet conditions and Young's modulus is estimated to be 4.89 ± 0.69 MPa, matching the stiffness of soft tissues. Furthermore, the enzymatic degradability, good biocompatibility, and in vivo X-ray visibility of the films are demonstrated by the in vitro enzymatic degradation test, in vivo biocompatibility test, and micro-CT imaging, respectively. Degradable silk-based soft actuators with magnetic responsiveness are successfully prepared by thermal forming or plastic molding of the magnetic silk films. The fabricated soft actuators can be actuated and move with precise locomotive gaits in solutions using a magnet. In addition, the retention of the soft actuators and localized drug delivery in gastrointestinal tracts by attaching a magnet to the abdominal skin are demonstrated using model systems. The degradable silk-based soft actuators provide many opportunities for improving current therapeutic strategies in biomedicine.
研究领域:
生物医学工程
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材料科学
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纳米技术
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药物递送系统
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）