Tag: 500-600

Bibi, Aamna;Hsu, Sheng-Chieh;Ji, Wei-Fu;Cho, Yi-Chi;Santiago, Karen S.;Yeh, Jui-Ming published 《Comparative studies of CPEs modified with distinctive metal nanoparticle-decorated electroactive polyimide for the detection of UA》 in 2021. The article was appeared in 《Polymers (Basel, Switzerland)》. They have made some progress in their research.Application In Synthesis of 5,5′-((Propane-2,2-diylbis(4,1-phenylene))bis(oxy))bis(isobenzofuran-1,3-dione) The article mentions the following:

In this present work, an electrochem. sensor was developed for the sensing of uric acid (UA). The sensor was based on a carbon paste electrode (CPE) modified with electroactive polyimide (EPI) synthesized using aniline tetramer (ACAT) decorated with reduced nanoparticles (NPs) of Au, Pt, and Ag. The initial step involved the preparation and characterization of ACAT. Subsequently, the ACAT-based EPI synthesis was performed by chem. imidization of its precursors 4,4′-(4.4′-isopropylidene-diphenoxy) bis (phthalic anhydride) BPADA and ACAT. Then, EPI was doped with distinctive particles of Ag, Pt and Au, and the doped EPIs were abbreviated as EPIS, EPIP and EPIG, resp. Their structures were characterized by XRD, XPS, and TEM, and the electrochem. properties were determined by cyclic voltammetry and chronoamperometry. Among these evaluated sensors, EPI with Au NPs turned out the best with a sensitivity of 1.53 uA uM-1 UA, a low limit of detection (LOD) of 0.78 uM, and a linear detection range (LDR) of 5-50 uM UA at a low potential value of 310 mV. Addnl., differential pulse voltammetric (DPV) anal. showed that the EPIG sensor showed the best selectivity for a tertiary mixture of UA, dopamine (DA), and ascorbic acid (AA) as compared to EPIP and EPIS. And 5,5′-((Propane-2,2-diylbis(4,1-phenylene))bis(oxy))bis(isobenzofuran-1,3-dione) (cas: 38103-06-9) was used in the research process.

5,5′-((Propane-2,2-diylbis(4,1-phenylene))bis(oxy))bis(isobenzofuran-1,3-dione)(cas: 38103-06-9) is a diallyl based epoxy modification agent that blends with the resin to improve the mechanical property of the epoxy material.Application In Synthesis of 5,5′-((Propane-2,2-diylbis(4,1-phenylene))bis(oxy))bis(isobenzofuran-1,3-dione) It is majorly used in novalac based resins, which can be further cured with bismaleimides (BMI) for aerospace, electronics and wireless communication based applications.

Reference:
Benzofuran – Wikipedia,
Benzofuran | C8H6O – PubChem

Dradrach, Klaudia;Rogoz, Mikolaj;Grabowski, Przemyslaw;Xuan, Chen;Weglowski, Rafal;Konieczkowska, Jolanta;Schab-Balcerzak, Ewa;Piecek, Wiktor;Wasylczyk, Piotr published 《Traveling Wave Rotary Micromotor Based on a Photomechanical Response in Liquid Crystal Polymer Networks》 in 2020. The article was appeared in 《ACS Applied Materials & Interfaces》. They have made some progress in their research.Safety of 5,5′-((Propane-2,2-diylbis(4,1-phenylene))bis(oxy))bis(isobenzofuran-1,3-dione) The article mentions the following:

The photomech. response of liquid crystal polymer networks (LCNs) can be used to directly convert light energy into different forms of mech. energy. In this study, we demonstrate how a traveling deformation, induced in a liquid crystal polymer ring by a spatially modulated laser beam, can be used to drive the ring (the rotor) to rotate around a stationary element (the stator), thus forming a light-powered micromotor. The photomech. response of the polymer film is modeled numerically, different LCN mol. configurations are studied, and the performance of a 5.5 mm diameter motor is characterized.5,5′-((Propane-2,2-diylbis(4,1-phenylene))bis(oxy))bis(isobenzofuran-1,3-dione) (cas: 38103-06-9) were involved in the experimental procedure.

5,5′-((Propane-2,2-diylbis(4,1-phenylene))bis(oxy))bis(isobenzofuran-1,3-dione)(cas: 38103-06-9) is a diallyl based epoxy modification agent that blends with the resin to improve the mechanical property of the epoxy material.Safety of 5,5′-((Propane-2,2-diylbis(4,1-phenylene))bis(oxy))bis(isobenzofuran-1,3-dione) It is majorly used in novalac based resins, which can be further cured with bismaleimides (BMI) for aerospace, electronics and wireless communication based applications.

Reference:
Benzofuran – Wikipedia,
Benzofuran | C8H6O – PubChem

Product Details of 38103-06-9In 2020, Zabegaeva, O. N.;Chen, G.;Fang, X.;Aliev, T. M.;Vygodskii, Ya. S. published 《Influence of the Structure of Polyimide Macromolecules on the Reinforcement of Polycaproamide》. 《Polymer Science, Series B: Polymer Chemistry》published the findings. The article contains the following contents:

Aromatic polyimides used in the anionic polymerization of ε-caprolactam as polyfunctional activators are considered effective reinforcing agents of polycaproamide formed in their presence. It is shown that the nature of polyimide, the rigidity of its macromols., makes the dominant contribution to the strength characteristics of copolymers. It is found that mol. composites containing up to 5 wt % of the rigid-chain polyimide have a unique specific impact strength that is several times higher than the corresponding values for both polycaproamide and its copolymers with flexible-chain polyimides. The experimental procedure involved many compounds, such as 5,5′-((Propane-2,2-diylbis(4,1-phenylene))bis(oxy))bis(isobenzofuran-1,3-dione) (cas: 38103-06-9) .

5,5′-((Propane-2,2-diylbis(4,1-phenylene))bis(oxy))bis(isobenzofuran-1,3-dione)(cas: 38103-06-9) is a diallyl based epoxy modification agent that blends with the resin to improve the mechanical property of the epoxy material.Product Details of 38103-06-9 It is majorly used in novalac based resins, which can be further cured with bismaleimides (BMI) for aerospace, electronics and wireless communication based applications.

Reference:
Benzofuran – Wikipedia,
Benzofuran | C8H6O – PubChem

HPLC of Formula: 38103-06-9In 2021, Miao, Weijun;Chen, Hanxi;Pan, Zhongbin;Pei, Xueliang;Li, Long;Li, Peng;Liu, Jinjun;Zhai, Jiwei;Pan, Hui published 《Enhancement thermal stability of polyetherimide-based nanocomposites for applications in energy storage》. 《Composites Science and Technology》published the findings. The article contains the following contents:

Improving thermal stability of high-performance polymer-based nanocomposite films for elec. energy storage is essential to meet ever-increasing demands for the elec. industry, especially at harsh environment applications. Here, the polyetherimide (PEI)-based composites films are prepared via grafting method in the presence of SrTiO₃ (ST) nanofillers to substantially improved capacitive performances at elevated temperature The composites films with the optimized filler compositions show a high discharged energy d. of 6.76 J/cm³ under 600 MV/m at room temperature Meantime, excellent high-temperature discharged energy d. of 6.6 J/cm³ at 100°C for the composites films is also achieved, which is superior to most of the previously reported. The simulations further demonstrate that the ST nanoparticles embedded into the composites films could effectively improve heat dissipation in comparison with pristine PEI matrix, resulting in enhancement high-temperature energy storage capabilities. This work gives considerable promise for high energy d. polymer-based nanocomposite films capacitors under harsh environments.5,5′-((Propane-2,2-diylbis(4,1-phenylene))bis(oxy))bis(isobenzofuran-1,3-dione) (cas: 38103-06-9) were involved in the experimental procedure.

5,5′-((Propane-2,2-diylbis(4,1-phenylene))bis(oxy))bis(isobenzofuran-1,3-dione)(cas: 38103-06-9) is a diallyl based epoxy modification agent that blends with the resin to improve the mechanical property of the epoxy material.HPLC of Formula: 38103-06-9 It is majorly used in novalac based resins, which can be further cured with bismaleimides (BMI) for aerospace, electronics and wireless communication based applications.

Reference:
Benzofuran – Wikipedia,
Benzofuran | C8H6O – PubChem

Jiao, Long;Du, Zhijun;Dai, Xuemin;Wang, Hanfu;Yao, Haibo;Qiu, Xuepeng published 《Multifunctional polyimide films with superheat-resistance, low coefficient of thermal expansion and fluorescence performance》 in 2022. The article was appeared in 《Polymer》. They have made some progress in their research.Application In Synthesis of 5,5′-((Propane-2,2-diylbis(4,1-phenylene))bis(oxy))bis(isobenzofuran-1,3-dione) The article mentions the following:

A series of novel aromatic polyimide (PI) films containing xanthone moiety was prepared through a two-step procedure, namely, the polymerization of 2,7-diaminoxanthone (2,7-DAX) and six aromatic anhydrides and thermal imidization. The solubility, thermal properties, dimensional stability, mech. properties, and fluorescence performance of the resulting PI films were studied extensively. The PI-1 film prepared by Pyromellitic dianhydride (PMDA)/2,7-DAX has a glass transition temperature (T_g) of more than 450°C, a coefficient of thermal expansion (CTE) of as low as 6.3 ppm K^-1, 5% weight loss temperature (T₅) of 608°C, a tensile strength of 164 MPa, and a tensile modulus of 5.65 GPa, resulting in potential applications in the flexible OLED field. In addition, xanthone moiety acts as a fluorophore group to provide a polymer fluorescent performance, and the maximum emission wavelength is in the range of 443-552 nm, from blue color to yellow color. And 5,5′-((Propane-2,2-diylbis(4,1-phenylene))bis(oxy))bis(isobenzofuran-1,3-dione) (cas: 38103-06-9) was used in the research process.

5,5′-((Propane-2,2-diylbis(4,1-phenylene))bis(oxy))bis(isobenzofuran-1,3-dione)(cas: 38103-06-9) is a diallyl based epoxy modification agent that blends with the resin to improve the mechanical property of the epoxy material.Application In Synthesis of 5,5′-((Propane-2,2-diylbis(4,1-phenylene))bis(oxy))bis(isobenzofuran-1,3-dione) It is majorly used in novalac based resins, which can be further cured with bismaleimides (BMI) for aerospace, electronics and wireless communication based applications.

Reference:
Benzofuran – Wikipedia,
Benzofuran | C8H6O – PubChem

Name: 5,5′-((Propane-2,2-diylbis(4,1-phenylene))bis(oxy))bis(isobenzofuran-1,3-dione)《Solvent-Resistant Self-Crosslinked Poly(ether imide)》 was published in 2021. The authors were Xu, Zhen;Gehui, Liu;Cao, Ke;Guo, Dong;Serrano, Joel;Esker, Alan;Liu, Guoliang, and the article was included in《Macromolecules (Washington, DC, United States)》. The author mentioned the following in the article:

Poly(ether imide) (PEI) is a high-performance polymer with outstanding thermal stability, mech. strength, and processability, but a critical drawback of poor solvent resistance. Exposure to solvents including chloroform, DMF, dichloromethane, and N-Me pyrrolidone severely compromises the mech. and thermal performances. Herein, we report a method for preparing thermally crosslinked PEI (X-PEI) from azide-terminated PEI (N₃-PEI-N₃) synthesized via a one-pot diazotization-azidation reaction. X-PEI affords unprecedented solvent resistance unpossessed by conventional PEIs, as well as solution processability unrivaled by counterpart high-performance polymers such as polyimide. The glass transition temperature, storage modulus, and swelling ratio correlate pos. with crosslinking d., which is determined by the molar mass and azide concentration of N₃-PEI-N₃. This work advances the chem. of high-performance polymers. The method is generic and applicable to other engineering polymers. And 5,5′-((Propane-2,2-diylbis(4,1-phenylene))bis(oxy))bis(isobenzofuran-1,3-dione) (cas: 38103-06-9) was used in the research process.

5,5′-((Propane-2,2-diylbis(4,1-phenylene))bis(oxy))bis(isobenzofuran-1,3-dione)(cas: 38103-06-9) is a diallyl based epoxy modification agent that blends with the resin to improve the mechanical property of the epoxy material.Name: 5,5′-((Propane-2,2-diylbis(4,1-phenylene))bis(oxy))bis(isobenzofuran-1,3-dione) It is majorly used in novalac based resins, which can be further cured with bismaleimides (BMI) for aerospace, electronics and wireless communication based applications.

Reference:
Benzofuran – Wikipedia,
Benzofuran | C8H6O – PubChem

Computed Properties of C31H20O8《Dual-curing propargyl-phthalonitrile imide-based thermoset: Synthesis, characterization and curing behavior》 was published in 2021. The authors were Kolesnikov, Timofey I.;Orlova, Alexandra M.;Tsegelskaya, Anna Y.;Cherkaev, Georgij V.;Kechekyan, Alexander S.;Buzin, Alexander I.;Dmitryakov, Petr V.;Belousov, Sergey I.;Abramov, Igor G.;Serushkina, Olga V.;Kuznetsov, Alexander A., and the article was included in《European Polymer Journal》. The author mentioned the following in the article:

Oligoimide containing propargyl and phthalonitrile groups in one mol. (OI-PR-PN) was synthesized by a facile and eco-friendly method in benzoic acid melt. To incorporate side propargyl groups into the polyimide backbone, a new monomer was developed – 5-(2-propyn-1-yloxy) benzene-1,3-diamine (PBD). The OI-PR-PN dual-curing behavior was studied by DSC and FT-IR methods. The curing of phthalonitrile groups can be promoted by the intermediates formed during the propargyl groups polymerization This allows crosslinking of phthalonitrile groups at 300-350°C in one component system. OI-PR-PN showed good solubility in low b.p. solvents and had low melt viscosity (up to 8 Pas at 250°C). The temperatures of 10% weight loss of the cross-linked OI-PR-PN and oligoimide containing only propargyl groups (OI-PR) are 496°C and 450°C correspondingly. The completely cured OI-PR-PN glass transition temperature measured by dynamic mech. anal. was 424°C with a storage modulus 4.2 GPa at 50°C. The possibility of crosslinking without using curing additives with a combination of excellent thermal and mech. properties indicates the potential of OI-PR-PN as a matrix for composite manufacturing To complete the study, the researchers used 5,5′-((Propane-2,2-diylbis(4,1-phenylene))bis(oxy))bis(isobenzofuran-1,3-dione) (cas: 38103-06-9) .

5,5′-((Propane-2,2-diylbis(4,1-phenylene))bis(oxy))bis(isobenzofuran-1,3-dione)(cas: 38103-06-9) is a diallyl based epoxy modification agent that blends with the resin to improve the mechanical property of the epoxy material.Computed Properties of C31H20O8 It is majorly used in novalac based resins, which can be further cured with bismaleimides (BMI) for aerospace, electronics and wireless communication based applications.

Reference:
Benzofuran – Wikipedia,
Benzofuran | C8H6O – PubChem

Tundidor-Camba, Alain;Tagle, Luis H.;Terraza, Claudio A.;Rivera, Jorge;Coll, Deysma;Ortiz, Pablo A. published 《Tri-functional oligomeric polyesters prepared from new dicarboxylic acids containing several amino acids residues by Higashi methodology: synthesis, characterization, and study of solubility and thermal behavior》 in 2021. The article was appeared in 《Polymer Bulletin (Heidelberg, Germany)》. They have made some progress in their research.COA of Formula: C31H20O8 The article mentions the following:

Abstract: The synthesis of polyfunctional aliphatic oligomeric polyesters (poly(ether-imido-esters); PEIEs) containing several amino acid residues is described, and their thermal properties and solubility behavior were studied. The new sym. monomeric dicarboxylic acids were synthesized using 4-nitrophthalonitrile as starting material, which reacted with bisphenol-A or bis(4-hydroxyphenyl)diphenylmethane. Then, the tetranitrile derivatives were hydrolyzed to the tetracarboxylic acids and dehydrated to the resp. dianhydrides. Finally, these compounds reacted with the amino acids glycine or L-alanine to obtain the aliphatic dicarboxylic acid monomers. PEIEs were obtained by Higashi methodol. from these monomers and bisphenol-A, characterized by elemental anal., NMR and IR, and the results were in agreement with the structures. The materials were soluble at 25°C in several aprotic polar organic solvents and some in CHCl₃ and THF. In agreement with the viscosity and SEC results, PEIEs were oligomers with d.p. of four and six, and Mw and Mn between 7370-9790 g/mol and 3680-4850 g/mol, resp. The samples showed low T_g values (124-160°C), associated with important structural flexibility promotes by dicarboxylic acid monomers. Despite this, this parameter depended of the aminoacidic residue nature in the sense that when the volume of it increased, the T_g also increased due to a decrease in the free rotation that neg. affects the segmental movements of the chains. This effect was also observed when the side groups of the diphenol moiety of the dicarboxylic acid monomers increase from Me to Ph. The recorded TDT_10% values from the TGA anal. (334-457°C) do not allow to consider these samples as thermoset materials. In this sense, it was possible to observe an average increase of 8-13°C and 23-28°C when the lateral group volume of the amino acid residues and of the diphenol moiety are increased, resp. And 5,5′-((Propane-2,2-diylbis(4,1-phenylene))bis(oxy))bis(isobenzofuran-1,3-dione) (cas: 38103-06-9) was used in the research process.

5,5′-((Propane-2,2-diylbis(4,1-phenylene))bis(oxy))bis(isobenzofuran-1,3-dione)(cas: 38103-06-9) is a diallyl based epoxy modification agent that blends with the resin to improve the mechanical property of the epoxy material.COA of Formula: C31H20O8 It is majorly used in novalac based resins, which can be further cured with bismaleimides (BMI) for aerospace, electronics and wireless communication based applications.

Reference:
Benzofuran – Wikipedia,
Benzofuran | C8H6O – PubChem

Constantin, Catalin-Paul;Gradinaru, Luiza Madalina;Plopa, Olga;Rusu, Radu-Dan published 《Surface modification of polyimide films towards very low contact angles》. The research results were published in《Polymer Degradation and Stability》 in 2022.HPLC of Formula: 38103-06-9 The article conveys some information:

Homogeneous plasma treatment was used as a viable approach to modulate the surface characteristics of two polyimide films obtained by high-temperature polycondenzation and conventional casting. Physicochem. transformations of the polymeric materials surface were addressed through an interconnected parallel between bulk features, surface chem., topog., and wettability before and after exposure to plasma. Rigorous FTIR investigations, further complemented by EDX anal., were used to qual. assess mechanistic insights and plasma-triggered surface chem. modifications by monitoring the main changes in the position and integrated surface area of principal absorption bands. The film-forming conduct and surface specifics of pristine and modified materials were evaluated in terms of mech. stability, flexibility, morphol., optical transmittance, and roughness fluctuations. The connection between the plasma-induced hydrophilization of the two films and severe changes in polar:dispersive surface components, work of adhesion, and surface energy were thoroughly analyzed. Short- and long-term cell proliferation studies of the pristine and activated films were employed to determine the effect of plasma-induced modifications upon fibroblast growth. And 5,5′-((Propane-2,2-diylbis(4,1-phenylene))bis(oxy))bis(isobenzofuran-1,3-dione) (cas: 38103-06-9) was used in the research process.

5,5′-((Propane-2,2-diylbis(4,1-phenylene))bis(oxy))bis(isobenzofuran-1,3-dione)(cas: 38103-06-9) is a diallyl based epoxy modification agent that blends with the resin to improve the mechanical property of the epoxy material.HPLC of Formula: 38103-06-9 It is majorly used in novalac based resins, which can be further cured with bismaleimides (BMI) for aerospace, electronics and wireless communication based applications.

Reference:
Benzofuran – Wikipedia,
Benzofuran | C8H6O – PubChem

Jiang, Hongyu;Zhang, Hong;Wen, Yaqing;Tan, Liyun;Fang, Xingzhong;Chen, Guofei published 《Synthesis and comparative study on copolyetherimides from mixed isopropylidenebis(1,4-phenylene-oxy) bis(phthalic anhydride)s》 in 2022. The article was appeared in 《Polymer》. They have made some progress in their research.Computed Properties of C31H20O8 The article mentions the following:

Mixed isopropylidenebis(1,4-phenylene-oxy) bis(phthalic anhydride)s with different ratios (Mixed-BPADA 1-3) were synthesized successfully via aromatic nucleophilic substitution from nitrophthalonitrile and bisphenol A. The corresponding copolyetherimides (CoPEIs) were prepared with two representative aromatic diamines (4,4′-oxydianiline (4,4′-ODA) and m-phenylenediamine (m-PDA)) via two-step procedure and chem. imidization. CoPEIs showed T_gs from 222 to 256°C and T_d5%s from 486 to 505°C in argon, good mech. properties (tensile moduli of 2.5-2.9 GPa, tensile strengths of 69-96 MPa, and elongations at break of 3.3-6.3%), and good solubility With the introduction of 3-substituted phthalimide unit, CoPEIs displayed higher T_g values, lower elongations, better solubility and larger d-spacings. The rheol. properties of thermoplastic polyimide resins based on the mixed-BPADA were investigated. CoPEI-b series displayed good melt processibility, and the CoPEI-3b derived from mixed-BPADA 3 and m-PDA had the lowest melt viscosity among the copolymers. Compared to isomeric PEIs derived from BPADA isomers, CoPEIs displayed lower melt viscosities, indicating that the melt processibility had been greatly improved. And 5,5′-((Propane-2,2-diylbis(4,1-phenylene))bis(oxy))bis(isobenzofuran-1,3-dione) (cas: 38103-06-9) was used in the research process.

5,5′-((Propane-2,2-diylbis(4,1-phenylene))bis(oxy))bis(isobenzofuran-1,3-dione)(cas: 38103-06-9) is a diallyl based epoxy modification agent that blends with the resin to improve the mechanical property of the epoxy material.Computed Properties of C31H20O8 It is majorly used in novalac based resins, which can be further cured with bismaleimides (BMI) for aerospace, electronics and wireless communication based applications.

Reference:
Benzofuran – Wikipedia,
Benzofuran | C8H6O – PubChem