Article
Chemistry, Applied
Wanan Cai, Zhigang Yuan, Zhicheng Wang, Zhiyi Guo, Lili Zhang, Jun Wang, Wenbin Liu, Tao Tang
Summary: A novel hyperbranched benzoxazine (HB-PED230) was synthesized and found to have significant plasticizing effect on epoxy resin, reducing its brittleness and improving toughness. The mechanical properties of modified thermosets were enhanced after adding HB-PED230, indicating a great improvement in toughness for epoxy resin.
REACTIVE & FUNCTIONAL POLYMERS
(2021)
Article
Materials Science, Composites
Dwane E. Cossey, Stephen A. Hodge, Panagiotis G. Karagiannidis
Summary: This study reports the fabrication of nanocomposites with a poly(benzoxazine-co-epoxy) matrix reinforced with 1 wt% graphene. The addition of single fillers caused a delay in polymerisation and an increase in exothermic peak temperature, resulting in a reduction in ΔH-Total. Copolymerisation led to a decrease in tensile modulus and strength compared to the neat copolymer, while the nanocomposite with 0.7 wt% Nanene-002 + 0.3 wt% Nanene-001 showed the highest increase in tensile strength and elongation at break. Additionally, the thermal stability of the materials was improved.
JOURNAL OF REINFORCED PLASTICS AND COMPOSITES
(2023)
Article
Materials Science, Multidisciplinary
Yue Tang, Henry E. Symons, Pierangelo Gobbo, Jeroen Sebastiaan Van Duijneveldt, Ian Hamerton, Sebastien Rochat
Summary: A benzoxazine system combining liquid cardanol-based benzoxazine and an effective initiator with bisphenol A-based benzoxazine has been proposed. The mixture shows excellent fluidity and a relatively low peak polymerization temperature, and the cured polybenzoxazine exhibits high thermal decomposition temperature, moderate glass transition temperature, and robust mechanical strength comparable to the homopolymer obtained from curing bisphenol A-based benzoxazine.
ACS APPLIED POLYMER MATERIALS
(2023)
Article
Polymer Science
Jia-Xin Cheng, Wan-An Cai, Zhi-Cheng Wang, Abdul Qadeer Dayo, Zhi-Gang Yuan, Wen-Bin Liu, Jun Wang, Zhong-Cheng Pan
Summary: A boron-containing hyperbranched benzoxazine (HB-B) was synthesized and its properties were evaluated. The curing behavior, thermal stability, flame retardancy properties, and mechanical properties of the synthesized HB-B copolymer were studied. It was found that the introduction of HB-B improved the flame retardancy and mechanical properties of the copolymer.
POLYMERS FOR ADVANCED TECHNOLOGIES
(2023)
Article
Materials Science, Composites
Yuan Jia, Juxiang Yang, Zhen Liu, Limei Song, Ruifeng Shi
Summary: By modifying bismaleimide (BMI) resin with organic-inorganic hybrid silicon dioxide nanoparticles, the tribological properties were significantly improved, mainly due to the enhancement of heat resistance and mechanical properties.
PLASTICS RUBBER AND COMPOSITES
(2021)
Article
Energy & Fuels
Gonzalo Mauricio Ceron Lopez, Matthew B. Myers, Quan Xie, Colin D. Wood, Ali Saeedi
Summary: The use of a novel non-fluorinated benzoxazine monomer has been shown to effectively shift the wettability of sandstone rocks from strongly water-wet to an intermediate-wet state, thereby mitigating water blockage in gas producing wells. This environmentally friendly and cost-effective chemical treatment can increase gas relative permeability while reducing residual water saturation, offering a solution for low-permeability gas reservoirs where water blockage is a concern.
Article
Thermodynamics
Vyacheslav V. Shutov, Natalia Bornosuz, Roman F. Korotkov, Irina Yu Gorbunova, Igor S. Sirotin
Summary: This work presents a non-isothermal kinetic analysis of the curing process of benzoxazine - epoxy alloys using the DSC method. The results reveal a complex multi-step curing mechanism and demonstrate the importance of considering diffusion limitations in describing the real process under isothermal conditions.
THERMOCHIMICA ACTA
(2022)
Article
Polymer Science
Manlin Yuan, Xin Lu, Yudi Zhao, Shiao-Wei Kuo, Zhong Xin
Summary: In this paper, two novel siloxane-containing benzoxazine monomers, P-aptmds and P-appdms, were successfully synthesized. P-appdms exhibited excellent thermal stability and lower surface free energy and water absorption compared to P-aptmds. Both P-aptmds and P-appdms showed good dielectric properties due to the presence of bulky tert-butyl groups and non-polar siloxane segments.
Article
Chemistry, Applied
Nanthicha Thajai, Pornchai Rachtanapun, Sarinthip Thanakkasaranee, Thanongsak Chaiyaso, Yuthana Phimolsiripol, Noppol Leksawasdi, Sarana Rose Sommano, Korawan Sringarm, Tanpong Chaiwarit, Warintorn Ruksiriwanich, Pensak Jantrawut, Araya Kodsangma, Sukunya Ross, Patnarin Worajittiphon, Winita Punyodom, Kittisak Jantanasakulwong
Summary: An antimicrobial thermoplastic starch (TPS) was developed by melt-mixing TPS with chlorhexidine gluconate (CHG) and epoxy resin (Er). The addition of Er improved the tensile strength and hardness of TPSCh blend, especially at 5 wt% Er. TPSCh/Er showed higher water contact angle due to improved interfacial tension and exhibited lower CHG release compared to TPSCh.
CARBOHYDRATE POLYMERS
(2023)
Article
Polymer Science
Yunyao Zhang, Jiaxiong Tian, Xiaoyun Liu, Yunhe Yang, Qixin Zhuang
Summary: In the research of benzoxazine, striking a balance between thermal stability and processability has been a great challenge. The traditional trial-and-error method is time-consuming and inefficient, calling for a new approach. In this study, we propose a new method called gold panning, which involves the design of specific structures and screening. Using this method, we successfully obtained new benzoxazines with high thermal stability and ease of processing.
EUROPEAN POLYMER JOURNAL
(2022)
Article
Polymer Science
Tinghao Zhang, Wenzheng Zhang, Zichun Ding, Jianjian Jiao, Jinyan Wang, Wei Zhang
Summary: A fluorine-containing benzoxazine co-cured with biphenyl epoxy for the integrated circuit industry was studied. The curing kinetics, rheological behavior, and thermal stability of the co-curing systems were investigated. Quartz fiber cloth reinforced composites were prepared and their mechanical, thermal, and dielectric properties were evaluated.
Article
Materials Science, Multidisciplinary
Lucio Rossi de Souza, Jose Roberto M. d'Almeida, Xiang Cheng, Li-Han Rong, Eugene B. Caldona, Rigoberto C. Advincula
Summary: The copolymerization of a triamine-based benzoxazine and a commercial difunctional epoxy resin was explored to enhance thermal properties. Results indicated significant improvements such as increased glass transition temperature and higher thermal stability compared to individual components. The copolymers showed potential for extended uses in higher temperature applications.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Polymer Science
Manuel Romeis, Dietmar Drummer
Summary: In this research, a dual-cure system based on epoxy resin was developed for SLA additive manufacturing. By combining UV curing and thermal curing, the material achieved superior thermal and mechanical properties. Experimental results demonstrated significant improvement in tensile stress and glass transition temperature as epoxy concentrations increased.
Article
Crystallography
Worawat Wattanathana, Yuranan Hanlumyuang, Suttipong Wannapaiboon, Kantapat Chansaenpak, Piyanut Pinyou, Tanin Nanok, Pongsakorn Kanjanaboos
Summary: This study reports the synthesis of a novel benzoxazine monomer from bioresources and analyzes its structural characteristics. X-ray crystallography and intermolecular interaction examinations reveal important interactions between benzoxazine molecules. The photophysical properties of the benzoxazine in various solvents were also investigated, with corresponding relations proposed and explained based on computational calculations.
Article
Polymer Science
Athar Ali Khan Gorar, Zhiyi Guo, Zhicheng Wang, Abbas Daham, Jun Wang, Wen-Bin Liu, Jun-yi Wang, Mehdi Derradji
Summary: In this study, an isothermal compression molding process was used to develop enhanced green composites made from alkali-treated pine nut shell particles reinforced in fully bio-driven benzoxazine and epoxy copolymer. The properties of the composites were improved by varying weight percent of bio-filler. The composites showed higher flexural strength, modulus, and impact strength, as well as improved thermal stability and storage modulus compared to the unfilled copolymer. Finite element analysis confirmed the mechanical behavior of the prepared composites.
POLYMERS FOR ADVANCED TECHNOLOGIES
(2023)
