1
|
Sheng W, Yin R, Chen J, Zhang K. High-performance highly cross-linked networks based on ortho-imide functional mono-benzoxazines containing benzocyclobutene group. REACT FUNCT POLYM 2022. [DOI: 10.1016/j.reactfunctpolym.2021.105154] [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]
|
2
|
Lochab B, Monisha M, Amarnath N, Sharma P, Mukherjee S, Ishida H. Review on the Accelerated and Low-Temperature Polymerization of Benzoxazine Resins: Addition Polymerizable Sustainable Polymers. Polymers (Basel) 2021; 13:1260. [PMID: 33924552 PMCID: PMC8069336 DOI: 10.3390/polym13081260] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Revised: 04/07/2021] [Accepted: 04/10/2021] [Indexed: 12/30/2022] Open
Abstract
Due to their outstanding and versatile properties, polybenzoxazines have quickly occupied a great niche of applications. Developing the ability to polymerize benzoxazine resin at lower temperatures than the current capability is essential in taking advantage of these exceptional properties and remains to be most challenging subject in the field. The current review is classified into several parts to achieve this goal. In this review, fundamentals on the synthesis and evolution of structure, which led to classification of PBz in different generations, are discussed. Classifications of PBzs are defined depending on building block as well as how structure is evolved and property obtained. Progress on the utility of biobased feedstocks from various bio-/waste-mass is also discussed and compared, wherever possible. The second part of review discusses the probable polymerization mechanism proposed for the ring-opening reactions. This is complementary to the third section, where the effect of catalysts/initiators has on triggering polymerization at low temperature is discussed extensively. The role of additional functionalities in influencing the temperature of polymerization is also discussed. There has been a shift in paradigm beyond the lowering of ring-opening polymerization (ROP) temperature and other areas of interest, such as adaptation of molecular functionality with simultaneous improvement of properties.
Collapse
Affiliation(s)
- Bimlesh Lochab
- Materials Chemistry Laboratory, Department of Chemistry, School of Natural Sciences, Shiv Nadar University, Gautam Buddha Nagar, Uttar Pradesh 201314, India; (M.M.); (N.A.); (S.M.)
| | - Monisha Monisha
- Materials Chemistry Laboratory, Department of Chemistry, School of Natural Sciences, Shiv Nadar University, Gautam Buddha Nagar, Uttar Pradesh 201314, India; (M.M.); (N.A.); (S.M.)
| | - Nagarjuna Amarnath
- Materials Chemistry Laboratory, Department of Chemistry, School of Natural Sciences, Shiv Nadar University, Gautam Buddha Nagar, Uttar Pradesh 201314, India; (M.M.); (N.A.); (S.M.)
| | - Pratibha Sharma
- Department of Polymer Science and Engineering, Indian Institute of Technology, Hauz Khas, New Delhi 110016, India;
| | - Sourav Mukherjee
- Materials Chemistry Laboratory, Department of Chemistry, School of Natural Sciences, Shiv Nadar University, Gautam Buddha Nagar, Uttar Pradesh 201314, India; (M.M.); (N.A.); (S.M.)
| | - Hatsuo Ishida
- Department of Macromolecular Science and Engineering, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, OH 441067202, USA
| |
Collapse
|
3
|
Lu Y, Yu X, Evans CJ, Yang S, Zhang K. Elucidating the role of acetylene in ortho-phthalimide functional benzoxazines: design, synthesis, and structure–property investigations. Polym Chem 2021. [DOI: 10.1039/d1py00850a] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Novel ortho-phthalimide-benzoxazines containing acetylene have been designed and their corresponding thermosets exhibit excellent thermal stability although the expected benzoxazole cyclization at a much higher temperature did not take place.
Collapse
Affiliation(s)
- Yin Lu
- Research School of Polymeric Materials, School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Xinye Yu
- Research School of Polymeric Materials, School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Corey J. Evans
- School of Chemistry, University of Leicester, Leicester LE1 7RH, UK
| | - Shengfu Yang
- School of Chemistry, University of Leicester, Leicester LE1 7RH, UK
| | - Kan Zhang
- Research School of Polymeric Materials, School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, China
| |
Collapse
|
4
|
Nalakathu Kolanadiyil S, Minami M, Endo T. Implementation of meta-Positioning in Tetrafunctional Benzoxazines: Synthesis, Properties, and Differences in the Polymerized Structure. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c00947] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
| | - Masaki Minami
- Specialty Chemical & Material Company, JXTG Nippon Oil & Energy Corporation, 8 Chidori, Yokohama 231-0815, Japan
| | - Takeshi Endo
- Molecular Engineering Institute, Kindai University, 11-6 Kayanomori, Iizuka, Fukuoka 820-8555, Japan
- Kyushu Institute of Technology, 1-1 Sensui-cho, Tobata-ku, Kitakyushu-shi, Fukuoka 804-8550, Japan
| |
Collapse
|
5
|
Zhang K, Liu Y, Evans CJ, Yang S. Easily Processable Thermosets with Outstanding Performance via Smart Twisted Small-Molecule Benzoxazines. Macromol Rapid Commun 2020; 41:e1900625. [PMID: 31958211 DOI: 10.1002/marc.201900625] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Revised: 12/18/2019] [Indexed: 11/10/2022]
Abstract
High-performance aromatic polymers have excellent thermal, mechanical, and electrical properties and are lightweight, but it is highly challenging to deliver outstanding performances while still maintaining good processability of the precursors. Here, a new family of small-molecule benzoxazine resins with ortho-maleimide functionality is reported, which strikes an exceptional balance between the processability and performance. The excellent processability is attributed to the twisted molecular configurations of ortho-maleimide-substituted benzoxazines, which prevent intermolecular packing in the resin systems. The new benzoxazines can polymerize through multiple routes, which eliminate the twisted structures and create highly cross-linked polymer networks. The resulting new polymers are found to possess fascinating properties such as a high thermal stability (no Tg can be detected before 400 °C), excellent flame retardancy (a heat release capacity of 42.5 J g-1 K-1 ), and low dielectric constants (2.62-2.30 in the frequency range of 1 Hz to 10 MHz). The combined processability and versatility highlight the potential of smart benzoxazines in the preparation of high-performance thermosets, with important new applications that may span aerospace, transportation, and electronic packaging materials.
Collapse
Affiliation(s)
- Kan Zhang
- Research School of Polymeric Materials, School of Materials Science and Engineering, Jiangsu University, Zhenjiang, 212013, Jiangsu, P. R. China
| | - Yuqi Liu
- Research School of Polymeric Materials, School of Materials Science and Engineering, Jiangsu University, Zhenjiang, 212013, Jiangsu, P. R. China
| | - Corey J Evans
- School of Chemistry, University of Leicester, Leicester, LEI 7RH, UK
| | - Shengfu Yang
- School of Chemistry, University of Leicester, Leicester, LEI 7RH, UK
| |
Collapse
|
6
|
Han M, You S, Wang Y, Zhang K, Yang S. Synthesis of Highly Thermally Stable Daidzein-Based Main-Chain-Type Benzoxazine Resins. Polymers (Basel) 2019; 11:polym11081341. [PMID: 31412564 PMCID: PMC6723207 DOI: 10.3390/polym11081341] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Revised: 08/07/2019] [Accepted: 08/07/2019] [Indexed: 11/16/2022] Open
Abstract
In recent years, main-chain-type benzoxazine resins have been extensively investigated due to their excellent comprehensive properties for many potential applications. In this work, two new types of main-chain benzoxazine polymers were synthesized from daidzein, aromatic/aliphatic diamine, and paraformaldehyde. Unlike the approaches used synthesizing traditional main-chain-type benzoxazine polymers, the precursors derived from daidzein can undergo a further cross-linking polymerization in addition to the ring-opening polymerization of the oxazine ring. The structures of the new polymers were then studied by 1H nuclear magnetic resonance spectroscopy (NMR) and Fourier-transform infrared spectroscopy (FT-IR), and the molecular weights were determined by using gel permeation chromatography (GPC). We also monitored the polymerization process by differential scanning calorimetry (DSC) and in situ FT-IR. In addition, the thermal stability and flame-retardant properties of the resulting polybenzoxazines were investigated using TGA and microscale combustion calorimeter (MCC). The polybenzoxazines obtained in this study exhibited a very high thermal stability and low flammability, with a Tg value greater than 400 °C, and a heat release capacity (HRC) value lower than 30 J/(g K).
Collapse
Affiliation(s)
- Mengchao Han
- Research School of Polymeric Materials, School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Sijia You
- Research School of Polymeric Materials, School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Yuting Wang
- Research School of Polymeric Materials, School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Kan Zhang
- Research School of Polymeric Materials, School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, China.
| | - Shengfu Yang
- Department of Chemistry, University of Leicester, Leicester LE1 7RH, UK
| |
Collapse
|