Article
Chemistry, Multidisciplinary
Muhammad Inshad Khan, Asma Iqbal, Humaira Masood Siddiqi, Naveed Kausar Janjua, Tehmina Maryam Butt
Summary: A series of new poly(amide-imide)s were prepared by polycondensation of a diamine containing flexible ether and amide linkages with different aromatic dianhydrides. These polymers showed good solubility, thermal stability, flame retardant characteristics, and interesting photoluminescent properties.
Article
Materials Science, Multidisciplinary
Yunfei Guo, Anna M. M. Cristadoro, Julian Kleemann, Stefan Bokern, Rint P. P. Sijbesma, Zeljko Tomovic
Summary: Polyurethane can be modified with thermally stable aromatic imide structures to enhance its mechanical and thermal properties. In this study, imide-containing isocyanate-terminated prepolymers were synthesized in solvent-free conditions and used to prepare PUI elastomers with improved char formation and stiffness. The aromatic PUI elastomer also showed enhanced flame retardancy. This work demonstrates the potential use of imide prepolymers in high thermal stability and flame retardant PU applications.
ACS APPLIED POLYMER MATERIALS
(2023)
Article
Chemistry, Physical
Xuhong Niu, Jing Li, Jianfeng Song, Yueming Li, Tao He
Summary: A PEI/PVP separator was prepared for sodium ion batteries, showing good wetting properties, high ionic conductivity, and thermal stability, as well as flexibility and mechanical strength. When used in sodium ion batteries, the PEI/PVP separator significantly improved the battery performance and cycling stability.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Polymer Science
Taejoon Byun, Seong Jong Kim, Sang Youl Kim
Summary: Soluble aromatic poly(amide-imide)s with controlled imide/amide bond ratio were synthesized from a new diamide-diamine monomer. These materials exhibited high thermal stability and solubility, and could be used to fabricate flexible films.
Article
Polymer Science
Xingfeng Lei, Guo Xiong, Yuyang Xiao, Tianhao Huang, Xiangze Xin, Shuyu Xue, Qiuyu Zhang
Summary: By incorporating amide hydrogen bonding interactions, researchers have developed a new material called poly(amide-imide) hybridization networks, which exhibit superior shape memory behavior, thermal stability, and mechanical strength, making them promising candidates for aerospace applications.
Article
Materials Science, Composites
Sedigheh Khalili, Zahra Rafiee
Summary: In this study, ternary superparamagnetic nanocomposites consisting of graphene oxide (GO), Fe3O4 nanoparticles, and optically active poly(amide-imide) (PAI) were successfully fabricated. The nanocomposites exhibited excellent properties after a facile one-pot synthesis of Fe3O4 on GO, modification of Fe3O4@GO, and subsequent composite formation with chiral PAI.
JOURNAL OF THERMOPLASTIC COMPOSITE MATERIALS
(2022)
Article
Polymer Science
Kazuki Tada, Chiaki Ikegaki, Yuki Fuse, Kazuki Tateishi, Hiromitsu Sogawa, Fumio Sanda
Summary: The polycondensation reaction of N-((3,5-diamino)benzoyl)-L-alanine dodecyl ester (1L) with p-phthalaldehyde (2) resulted in the synthesis of a novel optically active polymer, poly(1L-2), containing Schiff base moieties in the main chain. Similar polymers with Schiff base moieties were also synthesized by varying the feed ratios of N-((3,5-diamino) benzoyl)-D-alanine dodecyl ester (1D) and N-((3,5-diamino)benzoyl)glycine dodecyl ester (1G). These polymers exhibited chiral CD signals in CHCl3 solvent, dependent on the molar ratios of 1L/1D and 1L/1G. Poly(1L-2) showed lyotropic liquid crystallinity in CHCl3 and THF solvents.
Article
Polymer Science
Yinjun Chen, Huiyi Zhang, Soumabrata Majumdar, Rolf A. T. M. van Benthem, Johan P. A. Heuts, Rint P. Sijbesma
Summary: The diamide-imide equilibrium was utilized to synthesize dynamic covalent polymer networks with high processibility and processible viscoelasticity at elevated temperatures. The temperature-dependent mechanical properties of the materials were fully reversible, transitioning from elastic solids to predominantly viscous materials around 110 degrees Celsius.
Article
Polymer Science
Taejoon Byun, Seong Jong Kim, Sang Youl Kim
Summary: Transparent and soluble poly(amide-imide)s (PAIs) with high dimensional stability were successfully synthesized using specific monomer synthesis method, and the prepared PAIs exhibited excellent properties with simple fabrication process.
Article
Chemistry, Multidisciplinary
Xun-Hui Xu, Shu-Ming Kang, Run-Tan Gao, Zheng Chen, Na Liu, Zong-Quan Wu
Summary: This work demonstrates the development of high performance fluoropolymers through a living polymerization mechanism. The synthesized poly(trifluoromethyl methylene) exhibits excellent properties such as resistance to chemical corrosion, high hydrophobicity, and low dielectric loss. The polymer can form stable helices and shows high optical activity and circularly polarized luminescence when synthesized using chiral palladium catalysts. Moreover, the polymer can be completely degraded to (E)-1,1,1,4,4,4-hexafluorobut-2-ene at high temperatures (>280 degrees C) and can be further modified.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Polymer Science
Mahipal Meena, Anjlina Kerketta, Manorama Tripathi, Prasun Roy, Josemon Jacob
Summary: Thermally stable, waterproof, hydrophilic, breathable poly(urethane-imide) (PUI) films were developed as a potential replacement for existing polyurethanes (PU) in waterproof breathable clothing. The PUI films showed higher waterproofness and breathability than PU films due to the presence of imide functionalities, as well as improved thermal stability.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Cheng Zhu, Alexandre Bergantini, Santosh K. Singh, Ralf I. Kaiser, Andre K. Eckhardt, Peter R. Schreiner, Ya-Syuan Huang, Bing-Jian Sun, Agnes H. H. Chang
Summary: The first formation of phosphine imide and its isomer phosphinous amide was achieved by exposing phosphine and ammonia ices to ionizing radiation. This method can be used to prepare, separate, and detect highly reactive compounds like intermediates of Wittig reactions.
CHEMICAL COMMUNICATIONS
(2021)
Article
Polymer Science
Yuanhao Zhang, Yubo Zhou, Zhen Wang, Jingling Yan
Summary: Colorless polyimide films have great potential for flexible display applications due to their excellent optical transparency and thermal and mechanical properties. By adjusting the molar ratios of monomers, the thermal, mechanical, and optical properties of the copolymers were optimized. The incorporation of amide linkages significantly improved the mechanical properties and dimensional stability of the films. The adoption of CBDA suppressed the formation of charge transfer complexes, resulting in well-balanced optical properties.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Chemistry, Organic
Garrett E. Evenson, Wyatt C. Powell, Aaron B. Hinds, Maciej A. Walczak
Summary: In this research, an effective and practical method for the synthesis of oxazolines and thiazolines was developed. This method utilizes a Mo(VI) dioxide catalyst stabilized by substituted picolinic acid ligands, which exhibits tolerance towards functional groups that are sensitive to highly electrophilic alternative reagents. The method has the potential to facilitate the synthesis of natural products, chiral ligands, and pharmaceutical intermediates.
JOURNAL OF ORGANIC CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
A. Young Kim, Seon Ju Lee, Moon Young Choi, Changyub Na, Lee Ku Kwac, Hong Gun Kim, Jin-Hae Chang
Summary: Polyamic acid (PAA) was synthesized using specific monomers and transformed into colorless transparent poly(amide imide) (CPAI) hybrid films. The CPAI hybrid films were prepared by dispersing organoclay STN in CPAI, and the properties were studied based on the dispersed STN content. While some clay were agglomerated, most clays were well-dispersed in nano-size. The best thermomechanical properties were achieved with an STN content of 3 wt%.
Article
Materials Science, Composites
Mohsen Hajibeygi, Mahdi Fardi, Meisam Shabanian
POLYMER COMPOSITES
(2019)
Article
Chemistry, Applied
Mohsen Hajibeygi, Saeid Shafiei-Navid, Meisam Shabanian
APPLIED ORGANOMETALLIC CHEMISTRY
(2019)
Article
Chemistry, Analytical
Sepideh Moradi Shahrebabak, Mohammad Saber-Tehrani, Mohammad Faraji, Meisam Shabanian, Parviz Aberoomand-Azar
MICROCHEMICAL JOURNAL
(2019)
Article
Chemistry, Analytical
Laleh Adlnasab, Maryam Ezoddin, Meisam Shabanian, Behnaz Mahjoob
MICROCHEMICAL JOURNAL
(2019)
Article
Polymer Science
Mohsen Hajibeygi, Hosein Jafarzadeh
Article
Polymer Science
Mohsen Hajibeygi, Navid Habibnejad, Meisam Shabanian, Hossein Ali Khonakdar
POLYMERS FOR ADVANCED TECHNOLOGIES
(2020)
Article
Materials Science, Multidisciplinary
Mohsen Hajibeygi, Masoumeh Mousavi, Meisam Shabanian, Henri Vahabi
MATERIALS TODAY COMMUNICATIONS
(2020)
Article
Polymer Science
Mohsen Hajibeygi, Navid Habibnejad, Meisam Shabanian, Hossein Ali Khonakdar
Summary: DODA was synthesized to prepare DOPA and modify Mg(OH)(2) nanoparticles for the fabrication of nanocomposites. The uniform dispersion of nanoparticles in the polymer matrix was observed, contributing to the enhanced thermal and combustion properties of the composites.
POLYMER INTERNATIONAL
(2021)
Article
Materials Science, Multidisciplinary
Mohsen Hajibeygi, Masoumeh Mousavi, Meisam Shabanian, Navid Habibnejad, Henri Vahabi
Summary: A new ternary polypropylene hybride containing micro size magnesium oxide and nano size hydroxyapatite particles was prepared via melt blending technique. The distribution of HA nanoparticles in the PP matrix was uniform, improving the flame retardancy and mechanical properties of the material.
MATERIALS CHEMISTRY AND PHYSICS
(2021)
Article
Materials Science, Composites
Mohsen Hajibeygi, Shayan Faramarzinia
Summary: The study investigated the preparation of polyamide nanocomposites (PANC) containing hydrazide-hydrazone groups and their lead ions adsorption efficiency. The results showed that PANC exhibited higher thermal resistance than neat PA in N-2 environment and the addition of FPMN efficiently increased the combustion resistance of the material.
POLYMER COMPOSITES
(2021)
Article
Materials Science, Multidisciplinary
Mohsen Hajibeygi, Shayan Faramarzinia, Meisam Shabanian, Somayeh Norouzbahari, Jochen Meier-Haack
Summary: Hydrazide-hydrazone based polyamide (HHPA) and surface modified hydroxyapatite (SMHA) were successfully synthesized and used to fabricate PLA nanocomposites with enhanced heat and combustion resistance, mechanical strength, and gas barrier properties. The synergistic effect of SMHA and HHPA significantly improved the performance of PLA.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Polymer Science
Mohsen Hajibeygi, Aliasghar Javadi-gharyesafa
Summary: New polyamide/clay-layered double hydroxide nanocomposites (PACLN) were successfully prepared and characterized for their thermal and combustion properties. The results showed that PACLN exhibited improved heat resistance and thermal stability due to the effective dispersion of clay-layered double hydroxide nanosheets in the polyamide matrix.
POLYMER INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Mohsen Hajibeygi, Shayan Faramarzinia, Meisam Shabanian, Somayeh Norouzbahari, Jochen Meier-Haack
Summary: This study investigates the synthesis of hydrazide-hydrazone based polyamide (HHPA) and the surface modification of hydroxyapatite nanoparticles (HAN) for the preparation of polylactic acid (PLA)/HAN/HHPA nanocomposites. The results show that the introduction of HHPA and SMHA improves the heat resistance, combustion resistance, mechanical strength, and gas barrier properties of the PLA nanocomposites.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Polymer Science
Maryam Jahan Biglari, Rouhollah Semnani Rahbar, Meisam Shabanian, Hossein Ali Khonakdar
POLYMER-PLASTICS TECHNOLOGY AND MATERIALS
(2019)