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Pan K, Wei X, Zhu Z, Liu C, Yang B. Si-doped carbonized polymer dot as robust hydrophilic coating using for high efficiency antifogging. J Colloid Interface Sci 2024; 672:477-485. [PMID: 38852350 DOI: 10.1016/j.jcis.2024.06.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2024] [Revised: 05/20/2024] [Accepted: 06/02/2024] [Indexed: 06/11/2024]
Abstract
Hydrophilic coating can prevent surface from fogging but its application is limited by low mechanical performance. In this study, a hydrophilic coating was prepared by crosslinking the Si-doped carbonized polymer dot (Si-CPD) with 3-glycidyloxypropyltrimethoxysilane (GPTMS) and ethylene oxide (EO). The hydrophilic coating can be used as robust hydrophilic anti-fogging coating. The Si-CPD derived from ethylene diamine tetraacetic acid (EDTA) and aminopropyl oligosiloxanes (APOS) was successfully prepared via one-step hydrothermal method. Then, a resin solution was prepared by mixing Si-CPD, GPTMS and EO. Epoxy group of GPTMS and EO can react with amino group of Si-CPD. Finally, a composite coating with antifogging function can be obtained by simple heating curing. Due to the introduction of hydroxyl which derived from EO, the coating shows excellent antifogging performance. Meanwhile, the presence of inorganic component endows the coating with outstanding mechanical performance. The coating has great potential in related applications, such as optical lenses, mirrors and other transparency substrates.
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Affiliation(s)
- Kaibo Pan
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012, People's Republic of China
| | - Xiaoyu Wei
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012, People's Republic of China
| | - Zhicheng Zhu
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012, People's Republic of China
| | - Chongming Liu
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012, People's Republic of China
| | - Bai Yang
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012, People's Republic of China.
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2
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Li X, Zhang L, Li Y, Liu L, Wang R, Zhou H, Zhang D. Preparation and Properties Improvement of Decynediol-Ethoxylate-Modified Trisiloxane Surfactant. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024. [PMID: 39365841 DOI: 10.1021/acs.langmuir.4c02770] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/06/2024]
Abstract
Silicone surfactants are increasingly used in the industrial field due to their advantages such as low surface energy, stable performance, and good biocompatibility. However, many polyether-modified silicone surfactants' foam stability and easy hydrolysis in non-neutral aqueous systems limit their application in many fields. In this article, the decynediol-ethoxylate chain segment was grafted onto heptamethyltrisiloxane to synthesize a modified trisiloxane surfactant (G2). FT-IR and 1H NMR characterized its structure. Its surface activity, aggregation behavior, and wetting and spreading properties in water were studied by using instruments such as a surface tension meter, transmission electron microscope (TEM), dynamic light scattering (DLS), and contact angle tester. G2 can reduce the surface tension of water to 19.24 mN/m at a lower CMC (40.44 mg/L), and the foaming properties and hydrolysis stability of decynediol-ethoxylate-modified trisiloxane (G2) in water are significantly improved compared with allyl-polyoxyethylene-ether-modified trisiloxane (X5).
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Affiliation(s)
- Xinze Li
- Beijing Key Laboratory for Science and Application of Functional Molecular and Crystalline Materials, Department of Chemistry and Chemical Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Ling Zhang
- State Key Laboratory of Mesoscience and Engineering, Chinese Academy of Sciences, Beijing 100190, China
- School of Chemical Engineering, University of the Chinese Academy of Sciences, Beijing 100049, China
| | - Yibo Li
- State Key Laboratory of Mesoscience and Engineering, Chinese Academy of Sciences, Beijing 100190, China
- School of Chemical Engineering, University of the Chinese Academy of Sciences, Beijing 100049, China
| | - Longxin Liu
- China University of Mining & Technology, Beijing 100083, China
| | - Ruitao Wang
- Ningbo Key Laboratory of Green Petrochemical Carbon Emission Reduction Technology and Equipment, Ningbo 315201, China
| | - Hualei Zhou
- Beijing Key Laboratory for Science and Application of Functional Molecular and Crystalline Materials, Department of Chemistry and Chemical Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Donghai Zhang
- State Key Laboratory of Mesoscience and Engineering, Chinese Academy of Sciences, Beijing 100190, China
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3
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Ke Z, Yu J, Liao L, Rao X. Application progress of rosin in food packaging: A review. Int J Biol Macromol 2024; 280:135900. [PMID: 39313057 DOI: 10.1016/j.ijbiomac.2024.135900] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2024] [Revised: 09/11/2024] [Accepted: 09/20/2024] [Indexed: 09/25/2024]
Abstract
Foodborne illness caused by Gram bacteria is the most important food safety issue worldwide. Food packaging film is a very important means to extend the shelf life of food. It reduces microbial contamination and provides food safety assurance during the sales process. However, the food packaging material is derived from plastic. Most plastics are not only non-degradable but also harmful to human health. Biodegradable natural polymers are an ideal substitute, but their poor mechanical properties, hydrophilicity and weak antibacterial properties limit their applications. Rosin is an oily pine ester in the pine family, which is a natural renewable resource with a wide range of sources. It is widely used in various fields, such as surfactants, adhesives, drug loading, antibacterial, etc. However, there are only a few reports on the application of rosin in food packaging. It is worth noting that the unique hydrogenated phenanthrene ring structure of rosin can enhance the thermal stability, hydrophobicity and antibacterial properties of food packaging. More importantly, rosin has a wide range of sources, good biocompatibility, and can be degraded in nature. These advantages are conducive to the application of rosin in food packaging. However, previous reviews focused on resins, silicone rubbers and surfactants. In this review we will focus on the application of rosin in food packaging.
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Affiliation(s)
- Zhijun Ke
- Academy of Advanced Carbon Conversion Technology, Huaqiao University, Xiamen, Fujian Province 361021, China; College of Chemical Engineering, Huaqiao University, Xiamen, Fujian Province 361021, China; Fujian Provincial Key Laboratory of Biomass Low-Carbon Conversion (Huaqiao University), Xiamen, Fujian Province 361021, China
| | - Jinxuan Yu
- College of Chemical Engineering, Huaqiao University, Xiamen, Fujian Province 361021, China
| | - Lirong Liao
- Academy of Advanced Carbon Conversion Technology, Huaqiao University, Xiamen, Fujian Province 361021, China; College of Chemical Engineering, Huaqiao University, Xiamen, Fujian Province 361021, China; Fujian Provincial Key Laboratory of Biomass Low-Carbon Conversion (Huaqiao University), Xiamen, Fujian Province 361021, China
| | - Xiaoping Rao
- Academy of Advanced Carbon Conversion Technology, Huaqiao University, Xiamen, Fujian Province 361021, China; College of Chemical Engineering, Huaqiao University, Xiamen, Fujian Province 361021, China; Fujian Provincial Key Laboratory of Biomass Low-Carbon Conversion (Huaqiao University), Xiamen, Fujian Province 361021, China.
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4
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Zheng W, Zhang C, Han Y, Wang W, Li Z. Highly Durable Silicone-Based Elastomers Achieved Through the Synergy of Bi-Incompatible Soft Segments and Multi-Scale Hydrogen Bonds. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2402124. [PMID: 38593327 DOI: 10.1002/smll.202402124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2024] [Indexed: 04/11/2024]
Abstract
Developing a silicone elastomer with high strength, exceptional toughness, good crack tolerance, healability, and recyclability, poses significant challenges due to the inherent trade-offs between these properties. Herein, the design of silicone-based elastomers with a nanoscopic microphase separation structure and comprehensive mechanical properties is achieved by combining bi-incompatible soft segments and multi-scale hydrogen bonds. The formation of multi-scale hydrogen bonds involving urethane, urea, and 2-ureido-4[1H]-pyrimidinone (UPy) facilitates efficient reversible crosslinking of the synthesized polymer containing thermodynamically incompatible poly(dimethylsiloxane) (PDMS) and poly(propylene glycol) (PPG). The dynamic dissociation and recombination of hydrogen bonds, coupled with the forced compatibility and spontaneous separation of bi-incompatible soft segments, can effectively dissipate energy, particularly in the crack region during the stretching process. The obtained silicone-based elastomer exhibits a high break strength of 8.0 MPa, good elongation at break of 1910%, ultrahigh toughness of 67.8 MJ m-3, and unprecedented fracture energy of 31.8 kJ m-2 while maintaining their thermal stability, hydrophobicity, healability, and recyclability. This resilient and long-lasting silicone-based elastomer exhibits significant potential for use in flexible electronic devices.
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Affiliation(s)
- Wei Zheng
- Key Laboratory of Biobased Polymer Materials, Shandong Provincial Education Department, College of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao, Shandong, 266042, China
| | - Chengshu Zhang
- Key Laboratory of Biobased Polymer Materials, Shandong Provincial Education Department, College of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao, Shandong, 266042, China
| | - Yangjiao Han
- Key Laboratory of Biobased Polymer Materials, Shandong Provincial Education Department, College of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao, Shandong, 266042, China
| | - Wenpin Wang
- Key Laboratory of Biobased Polymer Materials, Shandong Provincial Education Department, College of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao, Shandong, 266042, China
| | - Zhibo Li
- Key Laboratory of Biobased Polymer Materials, Shandong Provincial Education Department, College of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao, Shandong, 266042, China
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Swann N, Tang K, Nam J, Lee J, Domin M, Shaw TE, Kozimor SA, Som S, Lee KL. Intermolecular C-H silylations of arenes and heteroarenes with mono-, bis-, and tris(trimethylsiloxy)hydrosilanes: control of silane redistribution under operationally diverse approaches. Chem Sci 2024; 15:11912-11918. [PMID: 39092102 PMCID: PMC11290416 DOI: 10.1039/d4sc03394a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2024] [Accepted: 06/17/2024] [Indexed: 08/04/2024] Open
Abstract
Efficient catalytic protocols for C-H silylations of arenes and heteroarenes with sterically and electronically different hydrosiloxysilanes are disclosed. The silylations are catalyzed by a well-defined Rh-complex (1 mol%), derived from [Rh(1,5-hexadiene)Cl]2 and a bulky BINAP type ligand. This catalyst not only promotes C-Si bond formation affording the desired products in up to 95% isolated yield, but also can suppress the silane redistribution side reactions of HSiMe2(OTMS). The protocol can also be applied for the C-H silylations of more reactive HSiMe(OTMS)2 with a much lower catalyst loading (0.25 mol%) and even with sterically demanding HSi(OTMS)3. The steric bulk of the arene substituent and hydrosiloxysilane is a major factor in determining the regioselectivity and electronic effect as secondary. The current method can be performed under operationally diverse conditions: with/without a hydrogen scavenger or solvent.
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Affiliation(s)
- Noah Swann
- University of Central Florida, Department of Chemistry 4111 Libra Drive, PSB #255 Orlando FL USA 32816
| | - Kiki Tang
- University of Central Florida, Department of Chemistry 4111 Libra Drive, PSB #255 Orlando FL USA 32816
| | - Jihyeon Nam
- University of Central Florida, Department of Chemistry 4111 Libra Drive, PSB #255 Orlando FL USA 32816
| | - Jooyeon Lee
- University of Central Florida, Department of Chemistry 4111 Libra Drive, PSB #255 Orlando FL USA 32816
| | - Marek Domin
- Mass Spectrometry Centre, Boston College 245 Beacon Street, Chestnut Hill MA 02467 USA
| | - Thomas E Shaw
- Los Alamos National Laboratory P.O. Box 1663 Los Alamos NM 87545 USA
| | - Stosh A Kozimor
- Los Alamos National Laboratory P.O. Box 1663 Los Alamos NM 87545 USA
| | - Salina Som
- University of Central Florida, Department of Chemistry 4111 Libra Drive, PSB #255 Orlando FL USA 32816
| | - Kangsang L Lee
- University of Central Florida, Department of Chemistry 4111 Libra Drive, PSB #255 Orlando FL USA 32816
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6
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Wang L, Dong H, Zheng K, Zeng N, Wu M, Wang X, Li H. Organofluorosilicon Modified Polyacrylate with the Unidirectional Migration Promotion of Disperse Dyes toward Polyester Fabric for Wash-Free Digital Inkjet Dyeing. ACS APPLIED MATERIALS & INTERFACES 2024; 16:40030-40045. [PMID: 39013080 DOI: 10.1021/acsami.4c08767] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/18/2024]
Abstract
The printing and dyeing industry is currently accelerating toward a direction of high efficiency, energy conservation, environmental protection, and integration with digitalization. Disperse dye wash-free digital inkjet dyeing is a revolutionary breakthrough for cleaning and coloring polyester fabric. Based on the solubility parameters and the hot-melt dyeing characteristics of disperse dyes, soft, hard, and functional monomers of acrylate were used as the main body. Moreover, single-vinyl fluorinated polysiloxane and divinyl polysiloxane with low solubility parameters were used as modified monomers. A modified polyacrylate (PFSMA) adhesive containing silicon in the main chain and fluorine silicon in the side chain was prepared via miniemulsion polymerization. Using disperse digital inkjet dyeing of polyester fabric without washing can realize energy saving, emission reduction, and carbon reduction. Results showed that the optimum preparation conditions of PFSMA were as follows: DVFS molecular weight of 957 g/mol and DVFS content of 2.5 wt %. Compared with that of polyacrylate (PA), the glass-transition temperature of PFSMA film decreased, and its water resistance, toughness, and adhesion enhanced. When the PFSMA content in the wash-free disperse red ink was 8 wt %, the color yields of the front and back of the PFSMA jet-dyed polyester fabric were 18.86 and 13.28, respectively. Moreover, the color yield of the front of PFSMA jet-dyed polyester fabric was 39.9% higher than that of the pure liquid disperse red jet-dyed fabric. The simulated fixation rate was 87.9%, approximately 2.9 times higher than that of the PA wash-free jet-dyed fabric. The color fastness to dry rubbing reached level 4 and the color fastness to wet rubbing reached level 3-4, which was one level higher than that of pure liquid disperse red jet-dyed fabrics. The color fastness to soaping reached grade 5 and the color fastness to heat compression reached grades 4-5 and above. The fabric was a little firmer but smoother. The color properties, color fastness, and hand feeling of the PFSMA wash-free jet-dyed polyester fabric exceeded the levels of commercially available adhesives.
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Affiliation(s)
- Lili Wang
- Engineering Research Center for Eco-Dyeing and Finishing of Textiles (Ministry of Education), College of Textiles Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, PR China
| | - Huixian Dong
- Engineering Research Center for Eco-Dyeing and Finishing of Textiles (Ministry of Education), College of Textiles Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, PR China
| | - Keying Zheng
- Engineering Research Center for Eco-Dyeing and Finishing of Textiles (Ministry of Education), College of Textiles Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, PR China
| | - Nasha Zeng
- Engineering Research Center for Eco-Dyeing and Finishing of Textiles (Ministry of Education), College of Textiles Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, PR China
| | - Minghua Wu
- Engineering Research Center for Eco-Dyeing and Finishing of Textiles (Ministry of Education), College of Textiles Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, PR China
| | - Xi Wang
- Hangzhou Honghua Digital Technology Co., Ltd., Hangzhou 310052, PR China
| | - Huijun Li
- Hangzhou Huasi Xiasha Textile Technology Co., LTD., Hangzhou 311199, PR China
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7
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Wang X, Zhao Y, Li H, Gao W, Liu Y, Sun A, Ma K, Hu Z, Wang Y. Adhesion and Transparency Enhancement between Flexible Polyimide-PDMS Copolymerized Film and Copper Foil for LED Transparent Screen. Polymers (Basel) 2024; 16:1591. [PMID: 38891537 PMCID: PMC11174799 DOI: 10.3390/polym16111591] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2024] [Revised: 05/21/2024] [Accepted: 06/02/2024] [Indexed: 06/21/2024] Open
Abstract
With the increasing demand for innovative electronic products, LED transparent screens are gradually entering the public eye. Polyimide (PI) materials combine high temperature resistance and high transparency, which can be used to prepare flexible copper-clad laminate substrates. The physical and chemical properties of PI materials differ from copper, such as their thermal expansion coefficients (CTEs), surface energy, etc. These differences affect the formation and stability of the interface between copper and PI films, resulting in a short life for LED transparent screens. To enhance PI-copper interfacial adhesion, aminopropyl-terminated polydimethylsiloxane (PDMS) can be used to increase the adhesive ability. Two diamine monomers with a trifluoromethyl structure and a sulfone group structure were selected in this research. Bisphenol type A diether dianhydride is a dianhydride monomer. All three of the above monomers have non-coplanar structures and flexible structural units. The adhesion and optical properties can be improved between the interface of the synthesized PI films and copper foil. PI films containing PDMS 0, 1, 3, and 5 wt% were analyzed using UV spectroscopy. The transmittance of the PI-1/3%, PI-1/5%, PI-2/3%, and PI-2/5% films were all more than 80% at 450 nm. Meanwhile, the Td 5% and Td 10% heat loss and Tg temperatures decreased gradually with the increase in PDMS. The peel adhesion of PI-copper foil was measured using a 180° peel assay. The effect of PDMS addition on peel adhesion was analyzed. PIs-3% films had the greatest peeling intensities of 0.98 N/mm and 0.85 N/mm.
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Affiliation(s)
- Xinming Wang
- School of Chemical Engineering, University of Science and Technology Liaoning, Anshan 114051, China; (X.W.); (Y.Z.); (H.L.); (W.G.); (Y.L.); (A.S.)
| | - Yuting Zhao
- School of Chemical Engineering, University of Science and Technology Liaoning, Anshan 114051, China; (X.W.); (Y.Z.); (H.L.); (W.G.); (Y.L.); (A.S.)
| | - Heming Li
- School of Chemical Engineering, University of Science and Technology Liaoning, Anshan 114051, China; (X.W.); (Y.Z.); (H.L.); (W.G.); (Y.L.); (A.S.)
| | - Weiguo Gao
- School of Chemical Engineering, University of Science and Technology Liaoning, Anshan 114051, China; (X.W.); (Y.Z.); (H.L.); (W.G.); (Y.L.); (A.S.)
| | - Yan Liu
- School of Chemical Engineering, University of Science and Technology Liaoning, Anshan 114051, China; (X.W.); (Y.Z.); (H.L.); (W.G.); (Y.L.); (A.S.)
| | - Anning Sun
- School of Chemical Engineering, University of Science and Technology Liaoning, Anshan 114051, China; (X.W.); (Y.Z.); (H.L.); (W.G.); (Y.L.); (A.S.)
| | - Ke Ma
- School of Chemical Engineering, University of Science and Technology Liaoning, Anshan 114051, China; (X.W.); (Y.Z.); (H.L.); (W.G.); (Y.L.); (A.S.)
| | - Zhizhi Hu
- School of Chemical Engineering, University of Science and Technology Liaoning, Anshan 114051, China; (X.W.); (Y.Z.); (H.L.); (W.G.); (Y.L.); (A.S.)
- Oxiranchem Holding Group Co., Ltd., Liaoyang 111003, China
| | - Yongqi Wang
- School of Information and Engineering, Liaoning Agricultural Technical College, Yingkou 115009, China
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8
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Wu M, Mu L, Zhang Z, Han X, Guo H, Han L. Anti-Cracking TEOS-Based Hybrid Materials as Reinforcement Agents for Paper Relics. Molecules 2024; 29:1834. [PMID: 38675652 PMCID: PMC11054927 DOI: 10.3390/molecules29081834] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2024] [Revised: 04/13/2024] [Accepted: 04/16/2024] [Indexed: 04/28/2024] Open
Abstract
Tetraethoxysilane (TEOS) is the most commonly used silicon-based reinforcement agent for conserving art relics due to its cost-effectiveness and commercial maturity. However, the resulting silica gel phase is prone to developing cracks as the gel shrinks during the sol-gel process, potentially causing severe damage to the objects being treated. In this study, dodecyltrimethoxysilane (DTMS) was introduced into TEOS to minimize this shrinkage by adding elastic long chains to weaken the capillary forces. The gel formed from the DTMS/TEOS hybrid material was transparent and crack-free, featuring a dense microstructure without mesopores or micropores. It exhibited excellent thermal stability, with a glass transition temperature of up to 109.64 °C. Evaluation experiments were conducted on artificially aged, handmade bamboo paper. The TEOS-based hybrid material effectively combined with the paper fibers through the sol-gel process, polymerizing into a network structure that enveloped the paper surface or penetrated between the fibers. The surface of the treated paper displayed excellent hydrophobic properties, with no significant changes in appearance, color, or air permeability. The mechanical properties of the treated bamboo paper improved significantly, with longitudinal and transverse tensile strengths increasing by up to 36.63% and 44.25%, respectively. These research findings demonstrate the promising potential for the application of DTMS/TEOS hybrid materials in reinforcing paper relics.
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Affiliation(s)
- Mengruo Wu
- Key Laboratory of Archaeomaterials and Conservation, Ministry of Education, Institute for Cultural Heritage and History of Science & Technology, University of Science and Technology Beijing, Beijing 100083, China; (M.W.); (Z.Z.); (L.H.)
| | - Le Mu
- Baotou Museum, Baotou 014010, China;
| | - Zhiyue Zhang
- Key Laboratory of Archaeomaterials and Conservation, Ministry of Education, Institute for Cultural Heritage and History of Science & Technology, University of Science and Technology Beijing, Beijing 100083, China; (M.W.); (Z.Z.); (L.H.)
| | - Xiangna Han
- Key Laboratory of Archaeomaterials and Conservation, Ministry of Education, Institute for Cultural Heritage and History of Science & Technology, University of Science and Technology Beijing, Beijing 100083, China; (M.W.); (Z.Z.); (L.H.)
| | - Hong Guo
- Key Laboratory of Archaeomaterials and Conservation, Ministry of Education, Institute for Cultural Heritage and History of Science & Technology, University of Science and Technology Beijing, Beijing 100083, China; (M.W.); (Z.Z.); (L.H.)
| | - Liuyang Han
- Key Laboratory of Archaeomaterials and Conservation, Ministry of Education, Institute for Cultural Heritage and History of Science & Technology, University of Science and Technology Beijing, Beijing 100083, China; (M.W.); (Z.Z.); (L.H.)
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9
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Li X, Ou X, Chen G, Bi R, Li Z, Xie Z, Yue W, Guo SZ. Ultrasoft and High-Adhesion Block Copolymers for Neuromorphic Computing. ACS APPLIED MATERIALS & INTERFACES 2024. [PMID: 38412379 DOI: 10.1021/acsami.3c19350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/29/2024]
Abstract
The "von Neumann bottleneck" is a formidable challenge in conventional computing, driving exploration into artificial synapses. Organic semiconductor materials show promise but are hindered by issues such as poor adhesion and a high elastic modulus. Here, we combine polyisoindigo-bithiophene (PIID-2T) with grafted poly(dimethylsiloxane) (PDMS) to synthesize the triblock-conjugated polymer (PIID-2T-PDMS). The polymer exhibited substantial enhancements in adhesion (4.8-68.8 nN) and reductions in elastic modulus (1.6-0.58 GPa) while maintaining the electrical characteristics of PIID-2T. The three-terminal organic synaptic transistor (three-terminal p-type organic artificial synapse (TPOAS)), constructed using PIID-2T-PDMS, exhibits an unprecedented analog switching range of 276×, surpassing previous records, and a remarkable memory on-off ratio of 106. Moreover, the device displays outstanding operational stability, retaining 99.6% of its original current after 1600 write-read events in the air. Notably, TPOAS replicates key biological synaptic behaviors, including paired-pulse facilitation (PPF), short-term plasticity (STP), and long-term plasticity (LTP). Simulations using handwritten digital data sets reveal an impressive recognition accuracy of 91.7%. This study presents a polyisoindigo-bithiophene-based block copolymer that offers enhanced adhesion, reduced elastic modulus, and high-performance artificial synapses, paving the way for the next generation of neuromorphic computing systems.
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Affiliation(s)
- Xiaohong Li
- Guangzhou Key Laboratory of Flexible Electronic Materials and Wearable Devices, Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, State Key Laboratory of Optoelectronic Materials and Technologies, School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou 510275, P. R. China
| | - Xingcheng Ou
- Guangzhou Key Laboratory of Flexible Electronic Materials and Wearable Devices, Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, State Key Laboratory of Optoelectronic Materials and Technologies, School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou 510275, P. R. China
| | - Guoliang Chen
- Guangzhou Key Laboratory of Flexible Electronic Materials and Wearable Devices, Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, State Key Laboratory of Optoelectronic Materials and Technologies, School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou 510275, P. R. China
| | - Ran Bi
- Guangzhou Key Laboratory of Flexible Electronic Materials and Wearable Devices, Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, State Key Laboratory of Optoelectronic Materials and Technologies, School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou 510275, P. R. China
| | - Ziqian Li
- Guangzhou Key Laboratory of Flexible Electronic Materials and Wearable Devices, Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, State Key Laboratory of Optoelectronic Materials and Technologies, School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou 510275, P. R. China
| | - Zhuang Xie
- Guangzhou Key Laboratory of Flexible Electronic Materials and Wearable Devices, Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, State Key Laboratory of Optoelectronic Materials and Technologies, School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou 510275, P. R. China
| | - Wan Yue
- Guangzhou Key Laboratory of Flexible Electronic Materials and Wearable Devices, Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, State Key Laboratory of Optoelectronic Materials and Technologies, School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou 510275, P. R. China
| | - Shuang-Zhuang Guo
- Guangzhou Key Laboratory of Flexible Electronic Materials and Wearable Devices, Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, State Key Laboratory of Optoelectronic Materials and Technologies, School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou 510275, P. R. China
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10
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Zhang D, Wang Y, Safaripour M, Bellido-Aguilar DA, Van Donselaar KR, Webster DC, Croll AB, Xia W. Energy renormalization for temperature transferable coarse-graining of silicone polymer. Phys Chem Chem Phys 2024; 26:4541-4554. [PMID: 38241021 DOI: 10.1039/d3cp05969c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2024]
Abstract
The bottom-up prediction of thermodynamic and mechanical behaviors of polymeric materials based on molecular dynamics (MD) simulation is of critical importance in polymer physics. Although the atomistically informed coarse-grained (CG) model can access greater spatiotemporal scales and retain essential chemical specificity, the temperature-transferable CG model is still a big challenge and hinders widespread application of this technique. Herein, we use a silicone polymer, i.e., polydimethylsiloxane (PDMS), having an incredibly low chain rigidity as a model system, combined with an energy-renormalization (ER) approach, to systematically develop a temperature-transferable CG model. Specifically, by introducing temperature-dependent ER factors to renormalize the effective distance and cohesive energy parameters, the developed CG model faithfully preserved the dynamics, mechanical and conformational behaviors compared with the target all-atomistic (AA) model from glassy to melt regimes, which was further validated by experimental data. With the developed CG model featuring tremendously improved computational efficiency, we systematically explored the influences of cohesive interaction strength and temperature on the dynamical heterogeneity and mechanical response of polymers, where we observed consistent trends with other linear polymers with varying chain rigidity and monomeric structures. This study serves as an extension of our proposed ER approach of developing temperature transferable CG models with diverse segmental structures, highlighting the critical role of cohesive interaction strength on CG modeling of polymer dynamics and thermomechanical behaviors.
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Affiliation(s)
- Dawei Zhang
- Department of Civil, Construction, and Environmental Engineering, North Dakota State University, Fargo, ND 58108, USA
| | - Yang Wang
- Zernike Institute for Advanced Materials, University of Groningen, 9747 AG, Groningen, The Netherlands
| | - Maryam Safaripour
- Department of Coatings and Polymeric Materials, North Dakota State University, Fargo, ND 58108, USA
| | - Daniel A Bellido-Aguilar
- Department of Coatings and Polymeric Materials, North Dakota State University, Fargo, ND 58108, USA
| | | | - Dean C Webster
- Department of Coatings and Polymeric Materials, North Dakota State University, Fargo, ND 58108, USA
| | - Andrew B Croll
- Department of Physics, North Dakota State University, Fargo, ND 58108, USA
| | - Wenjie Xia
- Department of Aerospace Engineering, Iowa State University, Ames, IA 50011, USA.
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11
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Porpora F, Dei L, Duncan TT, Olivadese F, London S, Berrie BH, Weiss RG, Carretti E. Non-Aqueous Poly(dimethylsiloxane) Organogel Sponges for Controlled Solvent Release: Synthesis, Characterization, and Application in the Cleaning of Artworks. Gels 2023; 9:985. [PMID: 38131971 PMCID: PMC10742450 DOI: 10.3390/gels9120985] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Revised: 12/07/2023] [Accepted: 12/11/2023] [Indexed: 12/23/2023] Open
Abstract
Polydimethylsiloxane (PDMS) organogel sponges were prepared and studied in order to understand the role of pore size in an elastomeric network on the ability to uptake and release organic solvents. PDMS organogel sponges have been produced according to sugar leaching techniques by adding two sugar templates of different forms and grain sizes (a sugar cube template and a powdered sugar template), in order to obtain materials differing in porosity, pore size distribution, and solvent absorption and liquid retention capability. These materials were compared to PDMS organogel slabs that do not contain pores. The sponges were characterized by Fourier-transform infrared spectroscopy with attenuated total reflectance (FTIR-ATR) and compared with PDMS slabs that do not contain pores. Scanning electron microscopy (SEM) provided information about their morphology. X-ray micro-tomography (XMT) allowed us to ascertain how the form of the sugar templating agent influences the porosity of the systems: when templated with sugar cubes, the porosity was 77% and the mean size of the pores was ca. 300 μm; when templated with powdered sugar, the porosity decreased to ca. 10% and the mean pore size was reduced to ca. 75 μm. These materials, porous organic polymers (POPs), can absorb many solvents in different proportions as a function of their polarity. Absorption capacity, as measured by swelling with eight solvents covering a wide range of polarities, was investigated. Rheology data established that solvent absorption did not have an appreciable impact on the gel-like properties of the sponges, suggesting their potential for applications in cultural heritage conservation. Application tests were conducted on the surfaces of two different lab mock-ups that simulate real painted works of art. They demonstrated further that PDMS sponges are a potential innovative support for controlled and selective cleaning of works of art surfaces.
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Affiliation(s)
- Francesca Porpora
- Department of Chemistry “Ugo Schiff” & CSGI Consortium, University of Florence, Via della Lastruccia, 3-13, 50019 Sesto Fiorentino, Italy; (F.P.); (L.D.); (F.O.)
| | - Luigi Dei
- Department of Chemistry “Ugo Schiff” & CSGI Consortium, University of Florence, Via della Lastruccia, 3-13, 50019 Sesto Fiorentino, Italy; (F.P.); (L.D.); (F.O.)
| | | | - Fedora Olivadese
- Department of Chemistry “Ugo Schiff” & CSGI Consortium, University of Florence, Via della Lastruccia, 3-13, 50019 Sesto Fiorentino, Italy; (F.P.); (L.D.); (F.O.)
| | - Shae London
- Department of Chemistry and Institute for Soft Matter Synthesis and Metrology, Georgetown University, 37th and O Streets NW, Washington, DC 20057, USA; (S.L.); (R.G.W.)
| | - Barbara H. Berrie
- Department of Scientific Research, National Gallery of Art, 2000 South Club Drive, Landover, MD 20785, USA;
| | - Richard G. Weiss
- Department of Chemistry and Institute for Soft Matter Synthesis and Metrology, Georgetown University, 37th and O Streets NW, Washington, DC 20057, USA; (S.L.); (R.G.W.)
| | - Emiliano Carretti
- Department of Chemistry “Ugo Schiff” & CSGI Consortium, University of Florence, Via della Lastruccia, 3-13, 50019 Sesto Fiorentino, Italy; (F.P.); (L.D.); (F.O.)
- National Research Council—National Institute of Optics (CNR-INO), Largo E. Fermi 6, 50125 Florence, Italy
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12
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Liu Y, Zhang F, Chi H, Zhang H, Huang X, Wang X, Wang J, Bai Y, Wang P, Xu K, Liu C, Zhou C. Design of Intelligent Protective Composite Material with Stress Rate Sensitivity, Strong Interface Adhesion, and Recyclability. Macromol Rapid Commun 2023; 44:e2300216. [PMID: 37335892 DOI: 10.1002/marc.202300216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Revised: 06/03/2023] [Indexed: 06/21/2023]
Abstract
Poly(dimethyl siloxane) (PDMS) elastomers play a significant role in smart materials, actuators, and flexible electronics. However, current PDMS lacks adhesion abilities and intelligent responsive properties, which limit its further application. In this study, the polydimethylsiloxane-ureidopyrimidinone impact hardening polymer (PDMS-UI) composites are manufactured by a dual cross-linking compositing tactic. PDMS, a chemically stable cross-linked network, acts as a framework owing to its excellent mechanical strength, whereas UI, a reversible dynamic physically cross-linked network with quadruple hydrogen bonding, endows the PDMS-UI with excellent self-healing ability (efficiency > 90%) and energy absorption (75.23%). Impressively, owing to multivalent hydrogen bonds, the PDMS-UI exhibits superior adhesion performance: the adhesion strength on various substrates exceed 150 kPa and that on the Ferrum substrate reaches 570 kPa. These outstanding properties make the PDMS-UI a potential candidate for application in both well-developed fields, such as, wearable protective materials, artificial skin and soft robotics.
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Affiliation(s)
- Ying Liu
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Changchun, 130022, P. R. China
- Ministry of Education, School of Chemical Engineering, Changchun University of Technology, Changchun, 130012, P. R. China
| | - Fan Zhang
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Changchun, 130022, P. R. China
| | - Hui Chi
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Changchun, 130022, P. R. China
| | - Hao Zhang
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Changchun, 130022, P. R. China
- Ministry of Education, School of Chemical Engineering, Changchun University of Technology, Changchun, 130012, P. R. China
| | - Xiaona Huang
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Changchun, 130022, P. R. China
- Ministry of Education, School of Chemical Engineering, Changchun University of Technology, Changchun, 130012, P. R. China
| | - XinYue Wang
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Changchun, 130022, P. R. China
| | - Jiarui Wang
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Changchun, 130022, P. R. China
| | - Yungang Bai
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Changchun, 130022, P. R. China
| | - Pixin Wang
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Changchun, 130022, P. R. China
| | - Kun Xu
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Changchun, 130022, P. R. China
| | - Chao Liu
- Anta Sports Goods Group Co., Ltd, Xiamen, 361000, P. R. China
| | - Chao Zhou
- Ministry of Education, School of Chemical Engineering, Changchun University of Technology, Changchun, 130012, P. R. China
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13
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Deriabin KV, Filippova SS, Islamova RM. Self-Healing Silicone Materials: Looking Back and Moving Forward. Biomimetics (Basel) 2023; 8:286. [PMID: 37504174 PMCID: PMC10807480 DOI: 10.3390/biomimetics8030286] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Revised: 06/28/2023] [Accepted: 06/28/2023] [Indexed: 07/29/2023] Open
Abstract
This review is dedicated to self-healing silicone materials, which can partially or entirely restore their original characteristics after mechanical or electrical damage is caused to them, such as formed (micro)cracks, scratches, and cuts. The concept of self-healing materials originated from biomaterials (living tissues) capable of self-healing and regeneration of their functions (plants, human skin and bones, etc.). Silicones are ones of the most promising polymer matrixes to create self-healing materials. Self-healing silicones allow an increase of the service life and durability of materials and devices based on them. In this review, we provide a critical analysis of the current existing types of self-healing silicone materials and their functional properties, which can be used in biomedicine, optoelectronics, nanotechnology, additive manufacturing, soft robotics, skin-inspired electronics, protection of surfaces, etc.
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Affiliation(s)
- Konstantin V. Deriabin
- Institute of Chemistry, St Petersburg State University, 7/9 Universitetskaya Emb., St. Petersburg 199034, Russia; (K.V.D.); (S.S.F.)
- South Ural State University, Chelyabinsk 454080, Russia
| | - Sofia S. Filippova
- Institute of Chemistry, St Petersburg State University, 7/9 Universitetskaya Emb., St. Petersburg 199034, Russia; (K.V.D.); (S.S.F.)
| | - Regina M. Islamova
- Institute of Chemistry, St Petersburg State University, 7/9 Universitetskaya Emb., St. Petersburg 199034, Russia; (K.V.D.); (S.S.F.)
- South Ural State University, Chelyabinsk 454080, Russia
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14
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Tang J, Feng S, Wang D. Facile Synthesis of Sulfur-Containing Functionalized Disiloxanes with Nonconventional Fluorescence by Thiol-Epoxy Click Reaction. Int J Mol Sci 2023; 24:ijms24097785. [PMID: 37175492 PMCID: PMC10177946 DOI: 10.3390/ijms24097785] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Revised: 04/22/2023] [Accepted: 04/23/2023] [Indexed: 05/15/2023] Open
Abstract
Herein, a series of novel sulfur-containing functionalized disiloxanes based on a low-cost and commercially available material, i.e., 1,3-bis(3-glycidoxypropyl)-1,1,3,3-tetramethyldisiloxane, and various thiol compounds were prepared by thiol-epoxy click reaction. It was found that both lithium hydroxide (LiOH) and tetrabutylammonium fluoride (TBAF) have high catalytic activity after optimizing the reaction condition, and the reaction can be carried out with high yields, excellent regioselectivity, mild reaction condition, and good tolerance of functional groups. These compounds exhibit excellent nonconventional fluorescence due to the formation of coordination bonds between Si atoms and heteroatoms (e.g., S or N) and can emit blue fluorescence upon ultraviolet (UV) irradiation. These results demonstrate that the thiol-epoxy click reaction could promisingly act as an efficient organosilicon synthetic methodology to construct various organosilicon materials with novel structures and functionality, and thus their application scope will be significantly expanded.
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Affiliation(s)
- Jing Tang
- Institute of Novel Semiconductors, State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China
- National Engineering Research Center for Colloidal Materials & Key Laboratory of Special Functional Aggregated Materials, Ministry of Education, Shandong Key Laboratory of Advanced Organosilicon Materials and Technologies, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
| | - Shengyu Feng
- National Engineering Research Center for Colloidal Materials & Key Laboratory of Special Functional Aggregated Materials, Ministry of Education, Shandong Key Laboratory of Advanced Organosilicon Materials and Technologies, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
| | - Dengxu Wang
- Institute of Novel Semiconductors, State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China
- National Engineering Research Center for Colloidal Materials & Key Laboratory of Special Functional Aggregated Materials, Ministry of Education, Shandong Key Laboratory of Advanced Organosilicon Materials and Technologies, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
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15
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Fang J, Luo Y, Kuang S, Luo K, Xiao Z, Peng X, Huang Z, Wang Z, Fang P. Effect of NO 2 Aging on the Surface Structure and Thermal Stability of Silicone Rubber with Varying Al(OH) 3 Contents. MATERIALS (BASEL, SWITZERLAND) 2023; 16:2540. [PMID: 36984420 PMCID: PMC10054637 DOI: 10.3390/ma16062540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Revised: 03/17/2023] [Accepted: 03/18/2023] [Indexed: 06/18/2023]
Abstract
In this study, silicone rubber (SiR) with 0, 90, and 180 parts of aluminum hydroxide (Al(OH)3, ATH) contents prepared in the laboratory was treated in a certain concentration of NO2 for 0, 12, 24, and 36 h. Fourier transform-infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), atomic force microscopy (AFM), X-ray photoelectron spectroscopy (XPS), and thermogravimetry (TG) were used to study the changes in the surface structure and thermal stability of SiR, as well as the influence of Al(OH)3 on the properties of SiR. According to AFM, the root-mean-square roughness of ATH-90 SiR was 192 nm, which was 2.7 times of ATH-0 SiR. With the incorporation of ATH, the surface of SiR became more susceptible to corrosion by NO2. According to FT-IR and XPS, with the increase in aging time, the side chain Si-CH3 of polydimethylsiloxane (PDMS) was oxidized gradually and a few of nitroso -NO2 groups were formed. According to TG, the incorporation of ATH caused the maximum decomposition rate temperature of PDMS to advance from 458.65 °C to 449.37 and 449.26 °C, which shows that the thermal stability of SiR degraded by adding ATH. After NO2 aging, a new decomposition stage appeared between 75 and 220 °C (stage Ⅰ), and this decomposition trend was similar to aluminum nitrate, which was proven to reduce the thermal stability of PDMS. The effects of NO2 on the surface structure and thermal stability of different ATH contents of silicone rubber were preliminarily clarified by a variety of characterization methods, which provided ideas for the development of silicone rubber resistant to NO2 aging.
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Affiliation(s)
- Jiapeng Fang
- Key Laboratory of Nuclear Solid State Physics Hubei Province, School of Physics and Technology, Wuhan University, Wuhan 430072, China
| | - Yi Luo
- Key Laboratory of Nuclear Solid State Physics Hubei Province, School of Physics and Technology, Wuhan University, Wuhan 430072, China
| | - Shilong Kuang
- Key Laboratory of Nuclear Solid State Physics Hubei Province, School of Physics and Technology, Wuhan University, Wuhan 430072, China
| | - Kai Luo
- Key Laboratory of Nuclear Solid State Physics Hubei Province, School of Physics and Technology, Wuhan University, Wuhan 430072, China
| | - Zikang Xiao
- Key Laboratory of Nuclear Solid State Physics Hubei Province, School of Physics and Technology, Wuhan University, Wuhan 430072, China
| | - Xiangyang Peng
- Guangdong Key Laboratory of Electric Power Equipment Reliability, Electric Power Research Institute of Guangdong Power Grid Co., Ltd., Guangzhou 510080, China
| | - Zhen Huang
- Guangdong Key Laboratory of Electric Power Equipment Reliability, Electric Power Research Institute of Guangdong Power Grid Co., Ltd., Guangzhou 510080, China
| | - Zheng Wang
- Guangdong Key Laboratory of Electric Power Equipment Reliability, Electric Power Research Institute of Guangdong Power Grid Co., Ltd., Guangzhou 510080, China
| | - Pengfei Fang
- Key Laboratory of Nuclear Solid State Physics Hubei Province, School of Physics and Technology, Wuhan University, Wuhan 430072, China
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16
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Liu T, Mao XR, Song S, Chen ZY, Wu Y, Xu LP, Wang P. Enantioselective Nickel-Catalyzed Hydrosilylation of 1,1-Disubstituted Allenes. Angew Chem Int Ed Engl 2023; 62:e202216878. [PMID: 36651564 DOI: 10.1002/anie.202216878] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Revised: 01/17/2023] [Accepted: 01/18/2023] [Indexed: 01/19/2023]
Abstract
Here, we report the first example of Ni-catalyzed asymmetric hydrosilylation of 1,1-disubstituted allenes with high level of regioselectivities and enantioselectivities. The key to achieve this stereoselective hydrosilylation reaction was the development of the SPSiOL-derived bisphosphite ligands (SPSiPO). This protocol features broad substrate scope, excellent functional group, and heterocycle tolerance, thus provides a versatile method for the construction of enantioenriched tertiary allylsilanes in a straightforward and atom-economic manner. DFT calculations were performed to reveal the reaction mechanism and the origins of the enantioselectivity.
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Affiliation(s)
- Tao Liu
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, CAS, 345 Lingling Road, Shanghai, 200032, P. R. China
| | - Xin-Rui Mao
- School of Chemistry and Chemical Engineering, Shandong University of Technology, 266 West Xincun Road, Zibo, 255000, P. R. China
| | - Shuo Song
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, CAS, 345 Lingling Road, Shanghai, 200032, P. R. China
| | - Zi-Yang Chen
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, CAS, 345 Lingling Road, Shanghai, 200032, P. R. China
| | - Yichen Wu
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, CAS, 345 Lingling Road, Shanghai, 200032, P. R. China
| | - Li-Ping Xu
- School of Chemistry and Chemical Engineering, Shandong University of Technology, 266 West Xincun Road, Zibo, 255000, P. R. China
| | - Peng Wang
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, CAS, 345 Lingling Road, Shanghai, 200032, P. R. China
- CAS Key Laboratory of Energy Regulation Materials, Shanghai Institute of Organic Chemistry, CAS, 345 Lingling Road, Shanghai, 200032, P. R. China
- School of Chemistry and Material Sciences, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou, 310024, China
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17
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Duan S, Li Z, Liu Y, Zhao N, Li Z. Preparation of robust diphenyl silicone elastomers with enhanced mechanical properties and thermal-aging resistances by using phosphazene as catalyst. POLYMER 2023. [DOI: 10.1016/j.polymer.2023.125855] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/16/2023]
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18
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Selim MS, Fatthallah NA, Shenashen MA, Higazy SA, Madian HR, Selim MM, El-Safty SA. Bioinspired Graphene Oxide-Magnetite Nanocomposite Coatings as Protective Superhydrophobic Antifouling Surfaces. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:2333-2346. [PMID: 36719844 DOI: 10.1021/acs.langmuir.2c03061] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Antifouling (AF) nanocoatings made of polydimethylsiloxane (PDMS) are more cost-efficient and eco-friendly substitutes for the already outlawed tributyltin-based coatings. Here, a catalytic hydrosilation approach was used to construct a design inspired by composite mosquito eyes from non-toxic PDMS nanocomposites filled with graphene oxide (GO) nanosheets decorated with magnetite nanospheres (GO-Fe3O4 nanospheres). Various GO-Fe3O4 hybrid nanofillers were dispersed into the PDMS resin through a solution casting method to evaluate the structure-property relationship. A simple coprecipitation procedure was used to fabricate magnetite nanospheres with an average diameter of 30-50 nm, a single crystal structure, and a predominant (311) lattice plane. The uniform bioinspired superhydrophobic PDMS/GO-Fe3O4 nanocomposite surface produced had a micro-/nano-roughness, low surface-free energy (SFE), and high fouling release (FR) efficiency. It exhibited several advantages including simplicity, ease of large-area fabrication, and a simultaneous offering of dual micro-/nano-scale structures simply via a one-step solution casting process for a wide variety of materials. The superhydrophobicity, SFE, and rough topology have been studied as surface properties of the unfilled silicone and the bioinspired PDMS/GO-Fe3O4 nanocomposites. The coatings' physical, mechanical, and anticorrosive features were also taken into account. Several microorganisms were employed to examine the fouling resistance of the coated specimens for 1 month. Good dispersion of GO-Fe3O4 hybrid fillers in the PDMS coating until 1 wt % achieved the highest water contact angle (158° ± 2°), the lowest SFE (12.06 mN/m), micro-/nano-roughness, and improved bulk mechanical and anticorrosion properties. The well-distributed PDMS/GO-Fe3O4 (1 wt % nanofillers) bioinspired nanocoating showed the least biodegradability against all the tested microorganisms [Kocuria rhizophila (2.047%), Pseudomonas aeruginosa (1.961%), and Candida albicans (1.924%)]. We successfully developed non-toxic, low-cost, and economical nanostructured superhydrophobic FR composite coatings for long-term ship hull coatings. This study may expand the applications of bio-inspired functional materials because for multiple AF, durability and hydrophobicity are both important features in several industrial applications.
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Affiliation(s)
- Mohamed S Selim
- Petroleum Application Department, Egyptian Petroleum Research Institute (EPRI), Nasr City11727, Cairo, Egypt
| | - Nesreen A Fatthallah
- Processes Design & Development Department, Egyptian Petroleum Research Institute (EPRI), Nasr City11727, Cairo, Egypt
| | - Mohamed A Shenashen
- Petroleum Application Department, Egyptian Petroleum Research Institute (EPRI), Nasr City11727, Cairo, Egypt
- National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukubashi, Ibaraki-ken305-0047, Japan
| | - Shimaa A Higazy
- Petroleum Application Department, Egyptian Petroleum Research Institute (EPRI), Nasr City11727, Cairo, Egypt
| | - Hekmat R Madian
- Processes Design & Development Department, Egyptian Petroleum Research Institute (EPRI), Nasr City11727, Cairo, Egypt
| | - Mahmoud M Selim
- Prince Sattam Bin Abdulaziz University, P.O. Box 173, Al-Kharj11942, Saudi Arabia
| | - Sherif A El-Safty
- National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukubashi, Ibaraki-ken305-0047, Japan
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19
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Budrienė S, Kochanė T, Žurauskaitė N, Balčiūnas E, Rinkūnaitė I, Jonas K, Širmenis R, Bukelskienė V, Baltriukienė D. Synthesis and characterization of UV curable biocompatible hydrophilic copolymers containing siloxane units. JOURNAL OF BIOMATERIALS SCIENCE. POLYMER EDITION 2023:1-20. [PMID: 36651136 DOI: 10.1080/09205063.2023.2170141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Tissues are highly three-dimensional structure complexes composed of different cell types and their interactions. One of the main challenges in tissue engineering is the inability to produce large, highly perfused scaffolds in which cells can grow at a high cell density and viability. Poly(dimethyl siloxane) (PDMS) is used as a flexible, biocompatible cell culture substrate with tunable mechanical properties. However, its fragility and hydrophobicity still pose a challenge. Here, we present a new strategy for the three-step one-pot synthesis of novel biocompatible hydrophilic copolymers containing siloxane units. In the first step, free radical copolymerization of acrylic acid (AA), butyl methacrylate (BMA), and 2-hydroxyethyl methacrylate (HEMA) was carried out in dioxane (DO) solution in the presence of 2,2'-azodiisobutyronitrile (AIBN). In the second step, the copolymers were modified with diepoxypropoxypropyl-terminated polydimethylsiloxane (DE-PDMS), and in the third step, the copolymers were additionally modified with glycidyl methacrylate (GMA). The modified copolymers were characterized by FTIR, NMR spectroscopy and elemental analysis. Films of modified copolymers were prepared by UV curing. SEM studies revealed microphase separated morphology with distribution of PDMS domains. The mechanical properties of the films depended on the amount of incorporated silicone modifier. The films were more hydrophilic than PDMS films. All novel copolymers showed high biocompatibility.
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Affiliation(s)
- Saulutė Budrienė
- Faculty of Chemistry and Geosciences, Vilnius University, Vilnius, Lithuania
| | - Tatjana Kochanė
- Faculty of Chemistry and Geosciences, Vilnius University, Vilnius, Lithuania
| | - Neringa Žurauskaitė
- Faculty of Chemistry and Geosciences, Vilnius University, Vilnius, Lithuania
| | - Evaldas Balčiūnas
- Institute of Biochemistry, Life Sciences Center, Vilnius University, Vilnius, Lithuania
| | - Ieva Rinkūnaitė
- Institute of Biochemistry, Life Sciences Center, Vilnius University, Vilnius, Lithuania
| | - Karolis Jonas
- Institute of Biochemistry, Life Sciences Center, Vilnius University, Vilnius, Lithuania
| | - Raimondas Širmenis
- Institute of Biochemistry, Life Sciences Center, Vilnius University, Vilnius, Lithuania
| | - Virginija Bukelskienė
- Institute of Biochemistry, Life Sciences Center, Vilnius University, Vilnius, Lithuania
| | - Daiva Baltriukienė
- Institute of Biochemistry, Life Sciences Center, Vilnius University, Vilnius, Lithuania
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20
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Xu J, Song S, Li J, Ji Y, Li Z, Fu D, Zhong Z, Xu G, Su F. Forming Multiple Heterojunctions in ZnO/Cu/Cu2O Boosts Dimethyldichlorosilane Production in Rochow-Müller Reaction. J Catal 2023. [DOI: 10.1016/j.jcat.2023.02.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
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21
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Vafaiee M, Ejehi F, Mohammadpour R. CNT-PDMS foams as self-powered humidity sensors based on triboelectric nanogenerators driven by finger tapping. Sci Rep 2023; 13:370. [PMID: 36611085 PMCID: PMC9825370 DOI: 10.1038/s41598-023-27690-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2022] [Accepted: 01/05/2023] [Indexed: 01/09/2023] Open
Abstract
An increasing number of frequently applied portable electronics has raised the significance of self-powered systems. In this regard, triboelectric nanogenerators (TENGs) have drawn considerable attention due to their diversity of design and high power output. As a widely used material in TENG electrodes, polydimethylsiloxane (PDMS) shows attractive characteristics, such as electron affinity, flexibility, and facile fabrication. To achieve active TENG-based humidity sensing, we proposed a straightforward method to enhance the hydrophilicity of PDMS by two parallel approaches: 1. Porosity induction, 2. Carbon nanotube (CNT) compositing. Both of the mentioned processes have been performed by water addition during the synthesis procedure, which is not only totally safe (in contrast with the similar foaming/compositing routes), but also applicable for a wide range of nanomaterials. Applying the modified electrode as a single-electrode TENG-based humidity sensor, demonstrated an impressive enhancement of sensing response from 56% up to 108%, compared to the bare electrodes. Moreover, the detecting range of ambient humidity was broadened to higher values of 80% in a linear behavior. The fabricated humidity sensor based on a CNT-PDMS foam not only provides superior sensing characteristics but also is satisfactory for portable applications, due to being lightweight and desirably self-powered.
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Affiliation(s)
- Mohaddeseh Vafaiee
- Institute for Nanoscience and Nanotechnology, Sharif University of Technology, Tehran, 14588-89694, Iran
| | - Faezeh Ejehi
- Institute for Nanoscience and Nanotechnology, Sharif University of Technology, Tehran, 14588-89694, Iran
| | - Raheleh Mohammadpour
- Institute for Nanoscience and Nanotechnology, Sharif University of Technology, Tehran, 14588-89694, Iran.
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22
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Dou H, Hu Y, Gao Y, Sun F. Design, synthesis and properties of trifluoromethyl polysiloxane oxetane monomers. Eur Polym J 2023. [DOI: 10.1016/j.eurpolymj.2022.111756] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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23
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Duszczak J, Mrzygłód A, Mituła K, Dutkiewicz M, Januszewski R, Rzonsowska M, Dudziec B, Nowicki M, Kubicki M. Distinct insight into the use of difunctional double-decker silsesquioxanes as building blocks for alternating A–B type macromolecular frameworks. Inorg Chem Front 2023. [DOI: 10.1039/d2qi02161g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A distinct look at known, hydrosilylation reactions used for the formation of DDSQ-based linear A–B alternating macromolecular systems with DPn > 1000 is presented. Selected physicochemical properties of obtained hybrid co-polymers were determined.
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Affiliation(s)
- Julia Duszczak
- Faculty of Chemistry, Adam Mickiewicz University in Poznan, Uniwersytetu Poznanskiego 8, 61-614 Poznan, Poland
- Centre for Advanced Technologies, Adam Mickiewicz University in Poznan, Uniwersytetu Poznanskiego 10, 61-614 Poznan, Poland
| | - Aleksandra Mrzygłód
- Faculty of Chemistry, Adam Mickiewicz University in Poznan, Uniwersytetu Poznanskiego 8, 61-614 Poznan, Poland
- Centre for Advanced Technologies, Adam Mickiewicz University in Poznan, Uniwersytetu Poznanskiego 10, 61-614 Poznan, Poland
| | - Katarzyna Mituła
- Faculty of Chemistry, Adam Mickiewicz University in Poznan, Uniwersytetu Poznanskiego 8, 61-614 Poznan, Poland
- Centre for Advanced Technologies, Adam Mickiewicz University in Poznan, Uniwersytetu Poznanskiego 10, 61-614 Poznan, Poland
| | - Michał Dutkiewicz
- Adam Mickiewicz University Foundation, Poznan Science and Technology Park, Rubiez 46, 61-612 Poznan, Poland
| | - Rafał Januszewski
- Faculty of Chemistry, Adam Mickiewicz University in Poznan, Uniwersytetu Poznanskiego 8, 61-614 Poznan, Poland
- Centre for Advanced Technologies, Adam Mickiewicz University in Poznan, Uniwersytetu Poznanskiego 10, 61-614 Poznan, Poland
| | - Monika Rzonsowska
- Faculty of Chemistry, Adam Mickiewicz University in Poznan, Uniwersytetu Poznanskiego 8, 61-614 Poznan, Poland
- Centre for Advanced Technologies, Adam Mickiewicz University in Poznan, Uniwersytetu Poznanskiego 10, 61-614 Poznan, Poland
| | - Beata Dudziec
- Faculty of Chemistry, Adam Mickiewicz University in Poznan, Uniwersytetu Poznanskiego 8, 61-614 Poznan, Poland
- Centre for Advanced Technologies, Adam Mickiewicz University in Poznan, Uniwersytetu Poznanskiego 10, 61-614 Poznan, Poland
| | - Marek Nowicki
- Centre for Advanced Technologies, Adam Mickiewicz University in Poznan, Uniwersytetu Poznanskiego 10, 61-614 Poznan, Poland
- Institute of Physics, Poznan University of Technology, Piotrowo 3, 60-965 Poznan, Poland
| | - Maciej Kubicki
- Faculty of Chemistry, Adam Mickiewicz University in Poznan, Uniwersytetu Poznanskiego 8, 61-614 Poznan, Poland
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24
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Mantha S, Chao H, Ylitalo AS, Fitzgibbons TC, Zhou W, Ginzburg VV, Wang ZG. Surfactant in a Polyol-CO 2 Mixture: Insights from a Classical Density Functional Theory Study. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:16172-16182. [PMID: 36524704 PMCID: PMC9798868 DOI: 10.1021/acs.langmuir.2c02913] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Revised: 11/26/2022] [Indexed: 06/17/2023]
Abstract
Silicone-polyether (SPE) surfactants, made of a polydimethyl-siloxane (PDMS) backbone and polyether branches, are commonly used as additives in the production of polymeric foams with improved properties. A key step in the production of polymeric foams is the nucleation of gas bubbles in the polymer matrix upon supersaturation of dissolved gas. However, the role of SPE surfactants in the nucleation of gas bubbles is not well understood. In this study, we use classical density functional theory to investigate the effect of an SPE surfactant on the nucleation of CO2 bubbles in a polyol foam formulation. We find that the addition of an SPE surfactant leads to a ∼3-fold decrease in the polyol-CO2 interfacial tension at the surfactant's critical micelle concentration. Additionally, the surfactant is found to reduce the free energy barrier and affect the minimum free energy pathway (MFEP) associated with CO2 bubble nucleation. In the absence of a surfactant, a CO2-rich bubble nucleates from a homogeneous CO2-supersaturated polyol solution by following an MFEP characterized by a single nucleation barrier. Adding a surfactant results in a two-step nucleation process with reduced free energy barriers. The first barrier corresponds to the formation of a spherical aggregate with a liquid-like CO2 core. This spherical aggregate then grows into a CO2-rich bubble (spherical aggregate with a vapor-like CO2 core) of a critical size representing the second barrier. We hypothesize that the stronger affinity of CO2 for PDMS (than polyether) stabilizes the spherical aggregate with the liquid-like CO2 core, leading to a lower free energy barrier for CO2 bubble nucleation. Stabilization of such an aggregate during the early stages of the nucleation may lead to foams with more, smaller bubbles, which can improve their microstrustural features and insulating abilities.
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Affiliation(s)
- Sriteja Mantha
- Division
of Chemistry and Chemical Engineering, California
Institute of Technology, Pasadena, California 91125, United States
| | - Huikuan Chao
- Dow,
Inc., Midland, Michigan 48667, United States
| | - Andrew S. Ylitalo
- Division
of Chemistry and Chemical Engineering, California
Institute of Technology, Pasadena, California 91125, United States
| | | | - Weijun Zhou
- Dow,
Inc., Lake Jackson, Texas 77566, United States
| | - Valeriy V. Ginzburg
- Dow,
Inc., Midland, Michigan 48667, United States
- Michigan
State University, East Lansing, Michigan 48910, United States
| | - Zhen-Gang Wang
- Division
of Chemistry and Chemical Engineering, California
Institute of Technology, Pasadena, California 91125, United States
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25
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Qiu S, Li Z, Ye X, Ying X, Zhou J, Wang Y. Selective Swelling of Polystyrene (PS)/Poly(dimethylsiloxane) (PDMS) Block Copolymers in Alkanes. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c01903] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Shoutian Qiu
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing211816, Jiangsu, P. R. China
| | - Zhuo Li
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing211816, Jiangsu, P. R. China
| | - Xiangyue Ye
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing211816, Jiangsu, P. R. China
| | - Xiang Ying
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing211816, Jiangsu, P. R. China
| | - Jiemei Zhou
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing211816, Jiangsu, P. R. China
| | - Yong Wang
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing211816, Jiangsu, P. R. China
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26
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Suzuki T, Seki T, Seki T. Study on a Novel Transdermal Therapeutic System that Combines the Achievement of Supersaturation by pH-shift Method and User–Activated System. J Pharm Innov 2022. [DOI: 10.1007/s12247-022-09702-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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27
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Miroshnichenko AS, Neplokh V, Mukhin IS, Islamova RM. Silicone Materials for Flexible Optoelectronic Devices. MATERIALS (BASEL, SWITZERLAND) 2022; 15:8731. [PMID: 36556538 PMCID: PMC9780939 DOI: 10.3390/ma15248731] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 12/02/2022] [Accepted: 12/05/2022] [Indexed: 06/17/2023]
Abstract
Polysiloxanes and materials based on them (silicone materials) are of great interest in optoelectronics due to their high flexibility, good film-forming ability, and optical transparency. According to the literature, polysiloxanes are suggested to be very promising in the field of optoelectronics and could be employed in the composition of liquid crystal devices, computer memory drives organic light emitting diodes (OLED), and organic photovoltaic devices, including dye synthesized solar cells (DSSC). Polysiloxanes are also a promising material for novel optoectronic devices, such as LEDs based on arrays of III-V nanowires (NWs). In this review, we analyze the currently existing types of silicone materials and their main properties, which are used in optoelectronic device development.
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Affiliation(s)
- Anna S. Miroshnichenko
- Institute of Chemistry, Saint Petersburg State University, 7/9 Universitetskaya Emb., St. Petersburg 199034, Russia
- ChemBio Cluster, ITMO University, 49 Kronverksky Pr., St. Petersburg 197101, Russia
- Laboratory of Renewable Energy Sources, St. Petersburg Academic University, 8/3 Khlopina Str., St. Petersburg 194021, Russia
| | - Vladimir Neplokh
- Institute of Chemistry, Saint Petersburg State University, 7/9 Universitetskaya Emb., St. Petersburg 199034, Russia
- ChemBio Cluster, ITMO University, 49 Kronverksky Pr., St. Petersburg 197101, Russia
- High School of Engineering Physics, The Great St. Petersburg Polytechnical University, 29 Polytechnicheskaya Str., St. Petersburg 195251, Russia
| | - Ivan S. Mukhin
- Institute of Chemistry, Saint Petersburg State University, 7/9 Universitetskaya Emb., St. Petersburg 199034, Russia
- ChemBio Cluster, ITMO University, 49 Kronverksky Pr., St. Petersburg 197101, Russia
- Laboratory of Renewable Energy Sources, St. Petersburg Academic University, 8/3 Khlopina Str., St. Petersburg 194021, Russia
- High School of Engineering Physics, The Great St. Petersburg Polytechnical University, 29 Polytechnicheskaya Str., St. Petersburg 195251, Russia
| | - Regina M. Islamova
- Institute of Chemistry, Saint Petersburg State University, 7/9 Universitetskaya Emb., St. Petersburg 199034, Russia
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28
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Farcaş‐Johnson MA, Kyne SH, Webster RL. Dehydrocoupling Polymerization: Poly(silylether) Synthesis by Using an Iron β-Diketiminate Catalyst. Chemistry 2022; 28:e202201642. [PMID: 35856289 PMCID: PMC9826106 DOI: 10.1002/chem.202201642] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Indexed: 01/11/2023]
Abstract
We describe the iron-catalyzed polymerizations of diol and silane monomers to obtain fourteen different poly(silylether) products with number average molecular weights (Mn ) up to 36.3 kDa. The polymerization reactions developed in this study are operationally simple and applicable to 1° and 2° silane monomer substrates and a range of benzylic and aliphatic diol substrates as well as one polyol example. The polymers were characterized by IR spectroscopy, DSC and TGA and, where solubility allowed, 1 H, 13 C{1 H}, 29 Si{1 H} NMR spectroscopies, GPC and MALDI-TOF were also employed. The materials obtained displayed low Tg values (-70.6 to 19.1 °C) and were stable upon heating up to T-5%,Ar 421.6 °C. A trend in T-5%,Ar was observed whereby use of a 2° silane leads to higher T-5%,Ar compared to those obtained using a 1° silane. Reaction monitoring was undertaken by in situ gas evolution studies coupled with GPC analysis to follow the progression of chain-length growth which confirmed a condensation polymerization-type mechanism.
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Affiliation(s)
- Mirela A. Farcaş‐Johnson
- Department of ChemistryUniversity of Bath Claverton DownBathUK
- School of ChemistryMonash UniversityClaytonVictoria3800Australia
| | - Sara H. Kyne
- School of ChemistryMonash UniversityClaytonVictoria3800Australia
| | - Ruth L. Webster
- Department of ChemistryUniversity of Bath Claverton DownBathUK
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29
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Cambiaso S, Rasera F, Rossi G, Bochicchio D. Development of a transferable coarse-grained model of polydimethylsiloxane. SOFT MATTER 2022; 18:7887-7896. [PMID: 36206016 DOI: 10.1039/d2sm00939k] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Polydimethylsiloxane (PDMS) is a popular silicon-based polymer with advanced applications in microfluidics and nanocomposites. The slow dynamics of polymer chains in such complex systems hinders molecular dynamics investigations based on all atom force fields. This limitation can be overcome by exploiting finely tuned coarse-grained (CG) models. This paper develops a transferable CG model of PDMS, compatible with the recent Martini 3 force field, using structural and thermodynamic properties as targets in the parametrization, including a vast set of experimental free energies of transfer. We validate the model transferability by reproducing the correct scaling laws for the PDMS gyration radius in the melt and good and bad solvents. We successfully test the model by reproducing the wetting behavior of water and acetonitrile on PDMS and the phase behavior of a PDMS-peptide triblock copolymer system. This work sets the stage for computational studies involving the interaction between PDMS and many synthetic and biological molecules modeled within the Martini framework.
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Affiliation(s)
- Sonia Cambiaso
- Physics Department, University of Genoa, Via Dodecaneso 33, 16146 Genoa, Italy.
| | - Fabio Rasera
- Dept of Mechanical and Aerospace Engineering, University of Rome La Sapienza, Via Eudossiana 18, 00184 Rome, Italy
| | - Giulia Rossi
- Physics Department, University of Genoa, Via Dodecaneso 33, 16146 Genoa, Italy.
| | - Davide Bochicchio
- Physics Department, University of Genoa, Via Dodecaneso 33, 16146 Genoa, Italy.
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30
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Hu X, Yuan Q, Huang F, Liu Z, Li B. Preparation and ablative behaviors of carbon fiber‐reinforced polydimethylsiloxane‐
co
‐poly(silylene acetylenearyleneacetylene) composites. J Appl Polym Sci 2022. [DOI: 10.1002/app.53087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Xueying Hu
- Key Laboratory for Specially Functional Materials and Related Technology of Ministry of Education, School of Materials Science & Engineering East China University of Science and Technology Shanghai China
| | - Qiaolong Yuan
- Key Laboratory for Specially Functional Materials and Related Technology of Ministry of Education, School of Materials Science & Engineering East China University of Science and Technology Shanghai China
| | - Farong Huang
- Key Laboratory for Specially Functional Materials and Related Technology of Ministry of Education, School of Materials Science & Engineering East China University of Science and Technology Shanghai China
| | - Zuozhen Liu
- Key Laboratory for Specially Functional Materials and Related Technology of Ministry of Education, School of Materials Science & Engineering East China University of Science and Technology Shanghai China
| | - Boqian Li
- Aerospace Research Institute of Materials and Processing Technology Beijing China
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31
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Deriabin KV, Islamova RM. Ferrocenyl-Containing Oligosiloxanes and Polysiloxanes: Synthesis, Properties, and Application. POLYMER SCIENCE SERIES C 2022. [DOI: 10.1134/s1811238222700096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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32
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Wang M, Chen W, Luo S, Zhou Y, Lei Y, Liu T. Effects of
scCO
2
foaming process and post‐vulcanization method on cellular structure, mechanical properties, and thermal stability of
PMVQ
foams. J Appl Polym Sci 2022. [DOI: 10.1002/app.53053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Min Wang
- Institute of Chemical Materials China Academy of Engineering Physics Mianyang China
- Material Science and Engineering College Southwest University of Science and Technology Mianyang China
| | - Wenyan Chen
- Institute of Chemical Materials China Academy of Engineering Physics Mianyang China
| | - Shikai Luo
- Institute of Chemical Materials China Academy of Engineering Physics Mianyang China
- Material Science and Engineering College Southwest University of Science and Technology Mianyang China
| | - Yuanlin Zhou
- Material Science and Engineering College Southwest University of Science and Technology Mianyang China
| | - Yajie Lei
- Institute of Chemical Materials China Academy of Engineering Physics Mianyang China
| | - Tao Liu
- Institute of Chemical Materials China Academy of Engineering Physics Mianyang China
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33
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Cai Y, Zheng J, Hu Y, Wei J, Fan H. The preparation of polyolefin elastomer functionalized with polysiloxane and its effect in ethylene-propylene-diene monomer/silicon rubber blends. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2022.111468] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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34
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Zhang C, Su R, Guo Y, Li D, Zhao J, Zhao Y, Yu T. Phenanthroimidazole/carbazole and phenanthroimidazole/ phenothiazine hybrids with alkoxyorganosilane functional groups as blue emitting materials. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.133062] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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35
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Feng B, Bai L, Yan X, Liu X, Zheng J. A Robust and Thermally Stable Poly(dimethylsiloxane) Elastomer with Reprocessability Based on Dynamic Silyl Ether Linkages. MACROMOL CHEM PHYS 2022. [DOI: 10.1002/macp.202200049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Bingwei Feng
- Tianjin Key Laboratory of Composite and Functional Materials School of Materials Science and Engineering Tianjin University Tianjin 300350 P. R. China
| | - Lu Bai
- Tianjin Key Laboratory of Composite and Functional Materials School of Materials Science and Engineering Tianjin University Tianjin 300350 P. R. China
| | - Xingxing Yan
- Tianjin Key Laboratory of Composite and Functional Materials School of Materials Science and Engineering Tianjin University Tianjin 300350 P. R. China
| | - Xiaofei Liu
- Tianjin Key Laboratory of Composite and Functional Materials School of Materials Science and Engineering Tianjin University Tianjin 300350 P. R. China
| | - Junping Zheng
- Tianjin Key Laboratory of Composite and Functional Materials School of Materials Science and Engineering Tianjin University Tianjin 300350 P. R. China
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36
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Zhu J, Chu W, Luo J, Yang J, He L, Li J. Dental Materials for Oral Microbiota Dysbiosis: An Update. Front Cell Infect Microbiol 2022; 12:900918. [PMID: 35846759 PMCID: PMC9280126 DOI: 10.3389/fcimb.2022.900918] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Accepted: 06/07/2022] [Indexed: 11/21/2022] Open
Abstract
The balance or dysbiosis of the microbial community is a major factor in maintaining human health or causing disease. The unique microenvironment of the oral cavity provides optimal conditions for colonization and proliferation of microbiota, regulated through complex biological signaling systems and interactions with the host. Once the oral microbiota is out of balance, microorganisms produce virulence factors and metabolites, which will cause dental caries, periodontal disease, etc. Microbial metabolism and host immune response change the local microenvironment in turn and further promote the excessive proliferation of dominant microbes in dysbiosis. As the product of interdisciplinary development of materials science, stomatology, and biomedical engineering, oral biomaterials are playing an increasingly important role in regulating the balance of the oral microbiome and treating oral diseases. In this perspective, we discuss the mechanisms underlying the pathogenesis of oral microbiota dysbiosis and introduce emerging materials focusing on oral microbiota dysbiosis in recent years, including inorganic materials, organic materials, and some biomolecules. In addition, the limitations of the current study and possible research trends are also summarized. It is hoped that this review can provide reference and enlightenment for subsequent research on effective treatment strategies for diseases related to oral microbiota dysbiosis.
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Affiliation(s)
- Jieyu Zhu
- State Key Laboratory of Oral Diseases, Department of Cariology and Endodontics, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Wenlin Chu
- State Key Laboratory of Oral Diseases, Department of Cariology and Endodontics, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, China
| | - Jun Luo
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, China
| | - Jiaojiao Yang
- State Key Laboratory of Oral Diseases, Department of Cariology and Endodontics, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
- *Correspondence: Jiaojiao Yang, ; Libang He,
| | - Libang He
- State Key Laboratory of Oral Diseases, Department of Cariology and Endodontics, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
- *Correspondence: Jiaojiao Yang, ; Libang He,
| | - Jiyao Li
- State Key Laboratory of Oral Diseases, Department of Cariology and Endodontics, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
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37
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Hada R, Kanazawa A, Aoshima S. Degradable Silyl Ether Polymers Synthesized by Sequence-Controlled Cationic Terpolymerization of 1,3-Dioxa-2-silacycloalkanes with Vinyl Ethers and Aldehydes. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c00857] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ryosuke Hada
- Department of Macromolecular Science, Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - Arihiro Kanazawa
- Department of Macromolecular Science, Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - Sadahito Aoshima
- Department of Macromolecular Science, Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan
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38
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Cazacu M, Dascalu M, Stiubianu GT, Bele A, Tugui C, Racles C. From passive to emerging smart silicones. REV CHEM ENG 2022. [DOI: 10.1515/revce-2021-0089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Amassing remarkable properties, silicones are practically indispensable in our everyday life. In most classic applications, they play a passive role in that they cover, seal, insulate, lubricate, water-proof, weather-proof etc. However, silicone science and engineering are highly innovative, seeking to develop new compounds and materials that meet market demands. Thus, the unusual properties of silicones, coupled with chemical group functionalization, has allowed silicones to gradually evolve from passive materials to active ones, meeting the concept of “smart materials”, which are able to respond to external stimuli. In such cases, the intrinsic properties of polysiloxanes are augmented by various chemical modifications aiming to attach reactive or functional groups, and/or by engineering through proper cross-linking pattern or loading with suitable fillers (ceramic, magnetic, highly dielectric or electrically conductive materials, biologically active, etc.), to add new capabilities and develop high value materials. The literature and own data reflecting the state-of-the art in the field of smart silicones, such as thermoplasticity, self-healing ability, surface activity, electromechanical activity and magnetostriction, thermo-, photo-, and piezoresponsivity are reviewed.
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Affiliation(s)
- Maria Cazacu
- Department of Inorganic Polymers , “Petru Poni” Institute of Macromolecular Chemistry , Aleea Gr. Ghica Voda 41A , 700487 Iasi , Romania
| | - Mihaela Dascalu
- Department of Inorganic Polymers , “Petru Poni” Institute of Macromolecular Chemistry , Aleea Gr. Ghica Voda 41A , 700487 Iasi , Romania
| | - George-Theodor Stiubianu
- Department of Inorganic Polymers , “Petru Poni” Institute of Macromolecular Chemistry , Aleea Gr. Ghica Voda 41A , 700487 Iasi , Romania
| | - Adrian Bele
- Department of Inorganic Polymers , “Petru Poni” Institute of Macromolecular Chemistry , Aleea Gr. Ghica Voda 41A , 700487 Iasi , Romania
| | - Codrin Tugui
- Department of Inorganic Polymers , “Petru Poni” Institute of Macromolecular Chemistry , Aleea Gr. Ghica Voda 41A , 700487 Iasi , Romania
| | - Carmen Racles
- Department of Inorganic Polymers , “Petru Poni” Institute of Macromolecular Chemistry , Aleea Gr. Ghica Voda 41A , 700487 Iasi , Romania
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Tan W, Du S, He Y, Lv G, Ma W, Xing A, Huang J. Effects of opening design of gas distribution plate on fluidization of the synthesis process of organosilicon monomer. KOREAN J CHEM ENG 2022. [DOI: 10.1007/s11814-022-1162-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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40
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Sharma A, Ming J, Liu N, Sun X, Zhu Y, Yano M, Chen G, Yang Y. Sustainable and efficient reduction of pollutants by immobilized PEG-P/Ag/Ag 2O/Ag 3PO 4/TiO 2 photocatalyst for purification of saline wastewater. MARINE POLLUTION BULLETIN 2022; 179:113731. [PMID: 35576679 DOI: 10.1016/j.marpolbul.2022.113731] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Revised: 04/17/2022] [Accepted: 05/01/2022] [Indexed: 06/15/2023]
Abstract
In this study, we have reported an efficient and stable degradation of pollutants at salinity condition using newly developed solar-light-driven silicone-TiO2 based photocatalytic immobilized system. The interfacial layer of Silicone-PEG-P/Ag/Ag2O/Ag3PO4/TiO2 (S-PEG/PAgT) photocatalyst exhibited higher surface roughness, hydrophobicity, better light absorption, and narrow band gap than S-TiO2. The Rh B degradation by S-PEG/PAgT (91.2%) was 1.71 folds higher than S-TiO2 (53.5%) under simulated solar light irradiation. The reduction rate was significantly higher in S-PEG/PAgT (0.0792 min-1) than S-TiO2 (0.0229 min-1). The S-PEG/PAgT demonstrated high TOC removal (>80%), high repeatability (10 cycles) and excellent activity after 30 days of incubation in aqueous NaCl. The mechanism analysis revealed the synergistic effect of surface morphology with irregular chamfered edges and photoinduced reactive species (O2-) with successive formation of free chlorine radicals (Cl) contributed to the removal of pollutants in saline wastewater. Therefore, considering the above advantages of high efficiency and effective elimination of organics illustrates the potential of newly developed S-PEG/PAgT immobilized system in long-term practical treatment real seawater and ballast water.
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Affiliation(s)
- Aditya Sharma
- Graduate School of Life and Environmental Science, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8572, Japan
| | - Jie Ming
- Graduate School of Life and Environmental Science, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8572, Japan
| | - Na Liu
- Graduate School of Life and Environmental Science, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8572, Japan
| | - Xiang Sun
- Graduate School of Life and Environmental Science, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8572, Japan
| | - Yunxin Zhu
- Graduate School of Life and Environmental Science, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8572, Japan
| | - Minami Yano
- Graduate School of Life and Environmental Science, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8572, Japan
| | - Guoping Chen
- Research Center for Functional Materials, National Institute for Materials Sciences, 1-1-1 Namiki, Tsukuba, Ibaraki 305-0004, Japan
| | - Yingnan Yang
- Graduate School of Life and Environmental Science, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8572, Japan.
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41
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Precise synthesis of α,ω-chain-end-functionalized poly(dimethylsiloxane) with bromoaryl groups for incorporation in naphthalene-diimide-based N-type semiconducting polymers. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.124934] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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42
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Inherent Flame-Retardant, Humid Environment Stable and Blue Luminescent Polyamide Elastomer Regulated by Siloxane Moiety. Polymers (Basel) 2022; 14:polym14091919. [PMID: 35567088 PMCID: PMC9104639 DOI: 10.3390/polym14091919] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2022] [Accepted: 04/28/2022] [Indexed: 11/17/2022] Open
Abstract
The rapid development of the polymeric materials market has created an urgent demand for the thermoplastic polyamide elastomer (TPAE) owing to its greater functionality, and ability to be synthesized via a facile and industrial route. In this work, a series of novel silicone-containing polyamides (PA1212/Si12) were successfully synthesized from 1,12-dodecarboxylic acid (LA), 1,12-dodecarbondiamine (DMDA), and 1,3-bis (amino-propyl) tetramethyldisiloxane (BATS), via a one-pot melt polycondensation method in the absence of a catalyst. FTIR, 1H-NMR, GPC and inherent viscosity results cohesively prove that the polymerization of monomers was well conducted, and the chemical structure was in high accordance with the design. As expected, the Si12 unit-content of the copolymers regulate the properties of the series. As the feeding ratio of BATS in the diamines increases from 5 mol% to 40 mol%, the thermal transition temperatures, Tg and Tm, decline steadily before finally stabilizing at ~6 °C and 160 °C, respectively, indicating that the co-polyamides possess improved chain flexibility but restricted crystallization ability. The conspicuous evolution in crystalline morphology of the series was observed by XRD and AFM. The increased PA Si12 phase induces the crystallized PA 1212 phase to transit from a thermally-favorable large and rigid crystal structure (α phase) to a kinetically-favorable small and ductile crystal structure (γ phase). Reflected in their stress–strain behavior, PA1212/Si12 copolymers are successfully tailored from rigid plastic to ductile elastomer. The tensile strength mildly drops from above 40 MPa to ~30 MPa while the reversible elongation increases from ~50% to approximately 350%. Accordingly, the moderate surface tension differences in the monomers facilitate the efficient conduction of the co-polymerization process, and the distributed short siloxane unit in the backbone fulfills the copolymer with desirable elasticity. Interestingly, the novel silicone-containing polyamides also display Si12 unit-content dependent flame retardancy, humidity stability, and unconventional solid-state fluorescence properties. The elastomers exhibit a low bibulous rate and anti-fouling characteristics to dye droplets and mud contamination, pass the V–1 rating (UL 94) with a constantly declining PHRR value, and emit blue luminescence under a 365 nm light source. Herein, we propose a new facile strategy for developing a high-performance and multifunctional silicone-modified polyamide, which bears promising industrialization potential. In addition, this first reported silicone-containing thermoplastic polyamide elastomer, which is self-extinguishing, anti-fouling and blue-luminescent, will further broaden the application potential of thermoplastic polyamide elastomers.
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Verma G, Sheshkar N, Pandey C, Gupta A. Recent trends of silicon elastomer-based nanocomposites and their sensing applications. JOURNAL OF POLYMER RESEARCH 2022. [DOI: 10.1007/s10965-022-03044-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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44
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Mituła K, Januszewski R, Duszczak J, Rzonsowska M, Dudziec B. High thermally stable polysiloxanes cross-linked with di(alkenyl)functionalized DDSQs exhibiting swelling abilities. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2022.111191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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45
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Fast synthesis of high molecular weights polydiethylsiloxanes and random poly(dimethylsiloxane-co- diethylsiloxane) copolysiloxanes via cyclic trimeric phosphazene base catalyzed ring-opening (co)polymerization. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2022.111280] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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46
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Yan X, Bai L, Feng B, Zheng J. Mechanically Strong, Thermally Stable, and Reprocessable Poly(dimethylsiloxane) Elastomers Enabled by Dynamic Silyl Ether Linkages. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2022.111267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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47
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Li Q, Wang ZL, Lu HX, Xu YH. Copper-Catalyzed Enantioselective 1,4-Protosilylation of Alkynyl-substituted Enones to Synthesize the Highly Diastereomeric Chiral Homoallenylsilanes. Org Lett 2022; 24:2832-2836. [PMID: 35394282 DOI: 10.1021/acs.orglett.2c00739] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A copper-catalyzed 1,4-protosilylation of α-alkynyl-enones to form the functionalized chiral homoallenylsilanes was developed. In the presence of a chiral monopyridine oxazoline ligand, a variety of trisubstituted allene derivatives bearing a contiguous stereogenic center and axis were prepared in good yields with excellent enantioselectivities and diastereoselectivities.
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Affiliation(s)
- Qi Li
- Department of Chemistry, University of Science and Technology of China, Hefei 230026, P. R. China
| | - Zi-Lu Wang
- Department of Chemistry, University of Science and Technology of China, Hefei 230026, P. R. China
| | - Huan-Xuan Lu
- Department of Chemistry, University of Science and Technology of China, Hefei 230026, P. R. China
| | - Yun-He Xu
- Department of Chemistry, University of Science and Technology of China, Hefei 230026, P. R. China
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Huang CC, Du MX, Zhang BQ, Liu CY. Glass Transition Temperatures of Copolymers: Molecular Origins of Deviation from the Linear Relation. Macromolecules 2022. [DOI: 10.1021/acs.macromol.1c02287] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Cong-Cong Huang
- CAS Key Laboratory of Engineering Plastics, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, The Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 10049, China
| | - Ming-Xuan Du
- CAS Key Laboratory of Engineering Plastics, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, The Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 10049, China
| | - Bao-Qing Zhang
- CAS Key Laboratory of Engineering Plastics, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, The Chinese Academy of Sciences, Beijing 100190, China
| | - Chen-Yang Liu
- CAS Key Laboratory of Engineering Plastics, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, The Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 10049, China
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49
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Deng J, Liu M, Du Z, Zhang C, Wang H, Kong P, Zou W. Study on high energy absorption of spontaneous closed cell polyacrylate foam. POLYM ENG SCI 2022. [DOI: 10.1002/pen.25914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Jingqian Deng
- Key Laboratory of Carbon Fiber and Functional Polymers Beijing University of Chemical Technology People's Republic of China
| | - Meng Liu
- Key Laboratory of Carbon Fiber and Functional Polymers Beijing University of Chemical Technology People's Republic of China
| | - Zhongjie Du
- Sinochem Petrochemical Distribution Co., Ltd Shanghai China
| | - Chen Zhang
- Key Laboratory of Carbon Fiber and Functional Polymers Beijing University of Chemical Technology People's Republic of China
| | - Hui Wang
- Unipoly (Shanghai) Performance Materials Co., Ltd, Shanghai People's Republic of China
| | - Peng Kong
- Key Laboratory of Carbon Fiber and Functional Polymers Beijing University of Chemical Technology People's Republic of China
| | - Wei Zou
- Key Laboratory of Carbon Fiber and Functional Polymers Beijing University of Chemical Technology People's Republic of China
- Changzhou Advanced Materials Research Institute Beijing University of Chemical Technology Jiangsu People's Republic of China
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50
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Effect of varying polydimethylsiloxane chain length and content on the adhesion and thermal properties of polydimethylsiloxane‐grafted acrylic pressure‐sensitive adhesives. J Appl Polym Sci 2022. [DOI: 10.1002/app.51738] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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