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Li L, Liu X, Li L, Wei S, Huang Q. Preparation of Rosin-Based Composite Membranes and Study of Their Dencichine Adsorption Properties. Polymers (Basel) 2022; 14:polym14112161. [PMID: 35683833 PMCID: PMC9183177 DOI: 10.3390/polym14112161] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Revised: 05/09/2022] [Accepted: 05/11/2022] [Indexed: 02/04/2023] Open
Abstract
In this work, rosin-based composite membranes (RCMs) were developed as selective sorbents for the preparation of dencichine for the first time. The rosin-based polymer microspheres (RPMs) were synthesized using 4-ethylpyridine as a functional monomer and ethylene glycol maleic rosinate acrylate as a crosslinking. RCMs were prepared by spinning the RPMs onto the membranes by electrostatic spinning technology. The optimization of various parameters that affect RCMs was carried out, such as the ratio concentration and voltage intensity of electrospinning membrane. The RCMs were characterized by SEM, TGA and FT-IR. The performances of RCMs were assessed, which included adsorption isotherms, selective recognition and adsorption kinetics. The adsorption of dencichine on RCMs followed pseudo-second-order and adapted Langmuir–Freundlich isotherm model. As for the RCMs, the fast adsorption stage appeared within the first 45 min, and the experimental maximum adsorption capacity was 1.056 mg/g, which is much higher than the previous dencichine adsorbents reported in the literature. The initial decomposition temperature of RCMs is 297 °C, the tensile strength is 2.15 MPa and the elongation at break is 215.1%. The RCMs have good thermal stability and mechanical properties. These results indicated that RCMs are a tremendously promising adsorbent for enriching and purifying dencichine from the notoginseng extracts.
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Affiliation(s)
- Long Li
- School of Chemistry and Chemical Engineering, Guangxi Minzu University, Nanning 530006, China; (L.L.); (X.L.); (L.L.); (S.W.)
- Key Laboratory of Chemistry and Engineering of Forest Products, State Ethnic Affairs Commission, Nanning 530006, China
- Guangxi Key Laboratory of Chemistry and Engineering of Forest Products, Nanning 530006, China
- Guangxi Collaborative Innovation Center for Chemistry and Engineering of Forest Products, Guangxi Minzu University, Nanning 530006, China
| | - Xiuyu Liu
- School of Chemistry and Chemical Engineering, Guangxi Minzu University, Nanning 530006, China; (L.L.); (X.L.); (L.L.); (S.W.)
- Key Laboratory of Chemistry and Engineering of Forest Products, State Ethnic Affairs Commission, Nanning 530006, China
- Guangxi Key Laboratory of Chemistry and Engineering of Forest Products, Nanning 530006, China
- Guangxi Collaborative Innovation Center for Chemistry and Engineering of Forest Products, Guangxi Minzu University, Nanning 530006, China
| | - Lanfu Li
- School of Chemistry and Chemical Engineering, Guangxi Minzu University, Nanning 530006, China; (L.L.); (X.L.); (L.L.); (S.W.)
| | - Sentao Wei
- School of Chemistry and Chemical Engineering, Guangxi Minzu University, Nanning 530006, China; (L.L.); (X.L.); (L.L.); (S.W.)
| | - Qin Huang
- School of Chemistry and Chemical Engineering, Guangxi Minzu University, Nanning 530006, China; (L.L.); (X.L.); (L.L.); (S.W.)
- Key Laboratory of Chemistry and Engineering of Forest Products, State Ethnic Affairs Commission, Nanning 530006, China
- Guangxi Key Laboratory of Chemistry and Engineering of Forest Products, Nanning 530006, China
- Guangxi Collaborative Innovation Center for Chemistry and Engineering of Forest Products, Guangxi Minzu University, Nanning 530006, China
- Correspondence:
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Ma M, Chu Q, Lin H, Xu L, He H, Shi Y, Chen S, Wang X. Highly anisotropic thermal conductivity and electrical insulation of nanofibrillated cellulose/Al 2O 3@rGO composite films: effect of the particle size. NANOTECHNOLOGY 2022; 33:135711. [PMID: 34929686 DOI: 10.1088/1361-6528/ac44e7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Accepted: 12/20/2021] [Indexed: 06/14/2023]
Abstract
Nanofibrillated cellulose (NFC) film has received tremendous attention due to its excellent electrical insulation, which shows great application prospects in the field of electronic devices. However, the low efficient heat dissipation of NFC film largely limits its use in advanced applications. In this work, the reduced graphene oxide hybrid fillers loaded alumina (Al2O3) particles with different sizes were synthesized by different drying methods, and then they were mixed with NFC to prepare a series of NFC-based composite films. The effect of Al2O3particle sizes on the thermal conductivity of NFC-based composite films was studied. The results showed that the surface areas of l-Al2O3particles were smaller than that of s-Al2O3particles, resulting in the smaller interface thermal resistance and superior thermal conductivity of the film containing l-Al2O3particles. The NFC-based composite films showed great potential for applications in thermal management by adjusting the particle size of fillers.
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Affiliation(s)
- Meng Ma
- College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, People's Republic of China
| | - Qindan Chu
- College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, People's Republic of China
| | - Hao Lin
- College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, People's Republic of China
| | - Lin Xu
- College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, People's Republic of China
| | - Huiwen He
- College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, People's Republic of China
| | - Yanqin Shi
- College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, People's Republic of China
| | - Si Chen
- College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, People's Republic of China
| | - Xu Wang
- College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, People's Republic of China
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Zhu Y, Zhao X, Peng Q, Zheng H, Xue F, Li P, Xu Z, He X. Flame-retardant MXene/polyimide film with outstanding thermal and mechanical properties based on the secondary orientation strategy. NANOSCALE ADVANCES 2021; 3:5683-5693. [PMID: 36133273 PMCID: PMC9419387 DOI: 10.1039/d1na00415h] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Accepted: 08/10/2021] [Indexed: 06/15/2023]
Abstract
With the development of multifunction and miniaturization in modern electronics, polymeric films with strong mechanical performance and high thermal conductivity are urgently needed. Two-dimensional transition metal carbides and nitrides (MXenes) have attracted extensive attention due to their tunable surface chemistry, layered structure and charming properties. However, there are few studies on using MXenes as fillers to enhance polymer properties. In this paper, we fabricate a three-dimensional foam by the freeze-drying method to enhance the interfacial interaction between adjacent MXene sheets and polyimide (PI) macromolecules, and then a composite film with a dense and well-ordered layer-by-layer structure is produced by the hot-pressing process. Based on the secondary orientation strategy, the resultant MXene/PI film exhibits an enhanced thermal conductivity of 5.12 ± 0.37 W m-1 K-1 and tensile strength of 102 ± 3 MPa. Moreover, the composite film has good flexibility and flame retardancy owing to the synergistic effect of MXene sheets and PI chains. Hence, the MXene/PI composite film with the properties of flexibility, flame-retardancy, high mechanical strength and efficient heat transmission is expected to be used as the next thermal management material in a variety of applications.
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Affiliation(s)
- Yue Zhu
- National Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Center for Composite Materials and Structures, Harbin Institute of Technology Harbin 150080 P. R. China
| | - Xingbin Zhao
- National Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Center for Composite Materials and Structures, Harbin Institute of Technology Harbin 150080 P. R. China
| | - Qingyu Peng
- National Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Center for Composite Materials and Structures, Harbin Institute of Technology Harbin 150080 P. R. China
- Shenzhen STRONG Advanced Materials Research Institute Co., Ltd. Shenzhen 518000 P. R. China
| | - Haowen Zheng
- National Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Center for Composite Materials and Structures, Harbin Institute of Technology Harbin 150080 P. R. China
| | - Fuhua Xue
- National Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Center for Composite Materials and Structures, Harbin Institute of Technology Harbin 150080 P. R. China
| | - Pengyang Li
- National Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Center for Composite Materials and Structures, Harbin Institute of Technology Harbin 150080 P. R. China
| | - Zhonghai Xu
- National Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Center for Composite Materials and Structures, Harbin Institute of Technology Harbin 150080 P. R. China
| | - Xiaodong He
- National Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Center for Composite Materials and Structures, Harbin Institute of Technology Harbin 150080 P. R. China
- Shenzhen STRONG Advanced Materials Research Institute Co., Ltd. Shenzhen 518000 P. R. China
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Wang L, Li H, Xiao S, Zhu M, Yang J. Preparation of p-Phenylenediamine Modified Graphene Foam/Polyaniline@Epoxy Composite with Superior Thermal and EMI Shielding Performance. Polymers (Basel) 2021; 13:2324. [PMID: 34301081 PMCID: PMC8309473 DOI: 10.3390/polym13142324] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 04/28/2021] [Accepted: 04/28/2021] [Indexed: 12/25/2022] Open
Abstract
With the development of integrated devices, the local hot spot has become a critical problem to guarantee the working efficiency and the stability. In this work, we proposed an innovative approach to deliver graphene foam/polyaniline@epoxy composites (GF/PANI@EP) with improvement in the thermal and mechanical property performance. The graphene foam was firstly modified by the grafting strategy of p-phenylenediamine to anchor reactive sites for further in-situ polymerization of PANI resulting in a conductive network. The thermal conductivity (κ) and electromagnetic interference shielding (EMI) performance of the optimized GF/PANI4:1@EP is significantly enhanced by 238% and 1184%, respectively, compared to that of pristine EP with superior reduced modulus and hardness. Such a method to deliver GF composites can not only solve the agglomeration problem in traditional high content filler casting process, but also provides an effective way to build up conductive network with low density for thermal management of electronic devices.
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Affiliation(s)
- Liusi Wang
- School of Materials Science and Engineering, University of Shanghai for Science and Technology, No. 516 Jungong Road, Shanghai 200093, China; (L.W.); (S.X.); (M.Z.)
| | - Haoliang Li
- School of Materials Science and Engineering, University of Shanghai for Science and Technology, No. 516 Jungong Road, Shanghai 200093, China; (L.W.); (S.X.); (M.Z.)
- School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology, No. 516 Jungong Road, Shanghai 200093, China
| | - Shuxing Xiao
- School of Materials Science and Engineering, University of Shanghai for Science and Technology, No. 516 Jungong Road, Shanghai 200093, China; (L.W.); (S.X.); (M.Z.)
| | - Mohan Zhu
- School of Materials Science and Engineering, University of Shanghai for Science and Technology, No. 516 Jungong Road, Shanghai 200093, China; (L.W.); (S.X.); (M.Z.)
| | - Junhe Yang
- School of Materials Science and Engineering, University of Shanghai for Science and Technology, No. 516 Jungong Road, Shanghai 200093, China; (L.W.); (S.X.); (M.Z.)
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Ruan K, Guo Y, Lu C, Shi X, Ma T, Zhang Y, Kong J, Gu J. Significant Reduction of Interfacial Thermal Resistance and Phonon Scattering in Graphene/Polyimide Thermally Conductive Composite Films for Thermal Management. RESEARCH (WASHINGTON, D.C.) 2021; 2021:8438614. [PMID: 33718876 PMCID: PMC7931127 DOI: 10.34133/2021/8438614] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/13/2020] [Accepted: 02/02/2021] [Indexed: 11/25/2022]
Abstract
The developing flexible electronic equipment are greatly affected by the rapid accumulation of heat, which is urgent to be solved by thermally conductive polymer composite films. However, the interfacial thermal resistance (ITR) and the phonon scattering at the interfaces are the main bottlenecks limiting the rapid and efficient improvement of thermal conductivity coefficients (λ) of the polymer composite films. Moreover, few researches were focused on characterizing ITR and phonon scattering in thermally conductive polymer composite films. In this paper, graphene oxide (GO) was aminated (NH2-GO) and reduced (NH2-rGO), then NH2-rGO/polyimide (NH2-rGO/PI) thermally conductive composite films were fabricated. Raman spectroscopy was utilized to innovatively characterize phonon scattering and ITR at the interfaces in NH2-rGO/PI thermally conductive composite films, revealing the interfacial thermal conduction mechanism, proving that the amination optimized the interfaces between NH2-rGO and PI, reduced phonon scattering and ITR, and ultimately improved the interfacial thermal conduction. The in-plane λ (λ ||) and through-plane λ (λ ⊥) of 15 wt% NH2-rGO/PI thermally conductive composite films at room temperature were, respectively, 7.13 W/mK and 0.74 W/mK, 8.2 times λ || (0.87 W/mK) and 3.5 times λ ⊥ (0.21 W/mK) of pure PI film, also significantly higher than λ || (5.50 W/mK) and λ ⊥ (0.62 W/mK) of 15 wt% rGO/PI thermally conductive composite films. Calculation based on the effective medium theory model proved that ITR was reduced via the amination of rGO. Infrared thermal imaging and finite element simulation showed that NH2-rGO/PI thermally conductive composite films obtained excellent heat dissipation and efficient thermal management capabilities on the light-emitting diodes bulbs, 5G high-power chips, and other electronic equipment, which are easy to generate heat severely.
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Affiliation(s)
- Kunpeng Ruan
- MOE Key Laboratory of Material Physics and Chemistry under Extraordinary Conditions, Shaanxi Key Laboratory of Macromolecular Science and Technology, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, China
| | - Yongqiang Guo
- MOE Key Laboratory of Material Physics and Chemistry under Extraordinary Conditions, Shaanxi Key Laboratory of Macromolecular Science and Technology, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, China
| | - Chuyao Lu
- Queen Mary University of London Engineering School, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, China
| | - Xuetao Shi
- MOE Key Laboratory of Material Physics and Chemistry under Extraordinary Conditions, Shaanxi Key Laboratory of Macromolecular Science and Technology, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, China
| | - Tengbo Ma
- MOE Key Laboratory of Material Physics and Chemistry under Extraordinary Conditions, Shaanxi Key Laboratory of Macromolecular Science and Technology, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, China
| | - Yali Zhang
- MOE Key Laboratory of Material Physics and Chemistry under Extraordinary Conditions, Shaanxi Key Laboratory of Macromolecular Science and Technology, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, China
| | - Jie Kong
- MOE Key Laboratory of Material Physics and Chemistry under Extraordinary Conditions, Shaanxi Key Laboratory of Macromolecular Science and Technology, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, China
| | - Junwei Gu
- MOE Key Laboratory of Material Physics and Chemistry under Extraordinary Conditions, Shaanxi Key Laboratory of Macromolecular Science and Technology, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, China
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Liu D, Ma C, Chi H, Li S, Zhang P, Dai P. Enhancing thermal conductivity of polyimide composite film by electrostatic self-assembly and two-step synergism of Al 2O 3 microspheres and BN nanosheets. RSC Adv 2020; 10:42584-42595. [PMID: 35516729 PMCID: PMC9058035 DOI: 10.1039/d0ra08048a] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Accepted: 11/08/2020] [Indexed: 12/22/2022] Open
Abstract
To improve the perfection of a three-dimensional thermally conductive network in polyimide (PI) composite film and with respect to the economy and simplicity of processing, a strategy of the two-step synergism of Al2O3 microspheres and hexagonal boron nitride (BN) nanosheets was proposed. First, BN nanosheet-coated Al2O3 microspheres (Al2O3@BN) were prepared by electrostatic self-assembly method for the first step of the synergism. Then, the Al2O3@BN&BN/PI composite film containing Al2O3@BN and BN was fabricated by a two-step method for the second step of the synergism, and was systematically characterized. With an optimized mass ratio of 2 : 1 of Al2O3@BN to BN, the thermal conductivity of the 35 wt% Al2O3@BN&BN/PI composite film reached 3.35 W m-1 K-1, and was increased by 1664% compared to that of pure PI. The synergism of the Al2O3 and BN was the most significant in the Al2O3@BN&BN/PI composite film with the thermal conductivity, which was 36.6%, 23% and 22% higher than that of the Al2O3/PI, BN/PI and Al2O3@BN/PI composite films, respectively. The enhancement mechanism of heat conduction was clearly demonstrated. The BN coated on the surface of Al2O3 mainly played a bridging role between the Al2O3 and the BN network, which improved the perfection of the thermally conductive network. The Al2O3@BN segregated the PI matrix to construct the BN network with the typical segregated structure in the composite film, resulting in an efficient thermally conductive network. This work provided a novel strategy for the preparation of conductive polymer composites.
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Affiliation(s)
- Dongxu Liu
- School of Material Science and Engineering, Guilin University of Electronic Technology Guilin 541004 China
| | - Chuanguo Ma
- School of Material Science and Engineering, Guilin University of Electronic Technology Guilin 541004 China
- Guangxi Key Laboratory of Information Materials Guilin 541004 China
- Engineering Research Center of the Ministry of Education for Electronic Information Materials and Devices Guilin 541004 China
| | - Hongtao Chi
- School of Material Science and Engineering, Guilin University of Electronic Technology Guilin 541004 China
| | - Shihui Li
- School of Material Science and Engineering, Guilin University of Electronic Technology Guilin 541004 China
| | - Ping Zhang
- Engineering Research Center of the Ministry of Education for Electronic Information Materials and Devices Guilin 541004 China
| | - Peibang Dai
- School of Material Science and Engineering, Guilin University of Electronic Technology Guilin 541004 China
- Guangxi Key Laboratory of Information Materials Guilin 541004 China
- Engineering Research Center of the Ministry of Education for Electronic Information Materials and Devices Guilin 541004 China
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He X, Wang Y. Highly Thermally Conductive Polyimide Composite Films with Excellent Thermal and Electrical Insulating Properties. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.9b05939] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Xuhua He
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Yuechuan Wang
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
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