A novel environment‐friendly synthetic technology of dibutyl itaconate

Yu, Yue; Wang, Shizhen; Zhong, Yang; Wang, Fang; Deng, Li

doi:10.1002/jctb.6447

Cited by 10 publications

(15 citation statements)

References 29 publications

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“…This behavior could be due to the fact that the DBI produces some plasticization effect into polymer matrices [ 46 ]. The introduction of a plasticizer reduces tensile modulus and tensile strength, and at the same time the elongation increases with regard to the other compounds studied; all these phenomenon can be explained by several plasticization theories, such as the lubricity, gel and free volume theories [ 47 , 48 ]. With the introduction of PBSA- g -IA and PBSA- g -MA copolymers into the BioPBSA/HEMP, the tensile modulus and tensile strength results are 2505 MPa and 23.2 MPa, respectively, for the BioPBSA/HEMP/PBSA- g -IA composite, and 2748 MPa and 29.1 MPa for the BioPBSA/HEMP/PBSA- g -MA.…”

Section: Resultsmentioning

confidence: 99%

Green Composites from Partially Bio-Based Poly(butylene succinate-co-adipate)-PBSA and Short Hemp Fibers with Itaconic Acid-Derived Compatibilizers and Plasticizers

et al. 2022

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In this work, green composites have been developed and characterized using a bio-based polymeric matrix such as BioPBSA and the introduction of 30 wt.% short hemp fibers as a natural reinforcement to obtain materials with maximum environmental efficiency. In order to increase the interfacial adhesion between the matrix and the fiber to obtain better properties in the composites, a reactive extrusion process has been carried out. On the one hand, different additives derived from bio-based itaconic acid have been added to the BioPBSA/HEMP composite, such as dibutyl itaconate (DBI) and a copolymer of PBSA grafted with itaconic acid (PBSA-g-IA). On the other hand, a different copolymer of PBSA grafted with maleic anhydride (PBSA-g-MA) was also tested. The resulting composites have been processed by injection-molding to obtain different samples which were evaluated in terms of mechanical, thermal, chemical, dynamic-mechanical, morphological and wettability and color properties. In relation to the mechanical properties, the incorporation of hemp fibers resulted in an increase in the stiffness of the base polymer. The tensile modulus of pure BioPBSA increased from 281 MPa to 3482 MPa with 30% fiber. The addition of DBI shows a remarkable improvement in the ductility of the composites, while copolymers with IA and MA, generate mechanically balanced composites. In terms of thermal properties, the incorporation of hemp fiber and compatibilizing agents led to a reduction in thermal stability. However, from the point of view of thermomechanical properties, a clear increase in rigidity is achieved throughout the temperature range studied. As far as the color of the samples is concerned, the incorporation of hemp generates a typical color, while the incorporation of the compatibilizing agents does not modify this color excessively. Finally, the introduction of lignocellulosic fibers greatly affects water absorption and contact angle, although the use of additives helped to mitigate this effect.

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Section: Resultsmentioning

confidence: 99%

Green Composites from Partially Bio-Based Poly(butylene succinate-co-adipate)-PBSA and Short Hemp Fibers with Itaconic Acid-Derived Compatibilizers and Plasticizers

et al. 2022

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“…Bio-based dibutyl itaconate was obtained by our group in Beijing University of Chemical Technology . Other chemicals used, reagents, and solvents were analytically pure and purchased commercially.…”

Section: Methodsmentioning

confidence: 99%

“…The study investigated the working mechanism of the pyrotechnic binder and the combustion process thereof to provide new strategies for a controllable combustion rate and clean combustion products. 8 Other chemicals used, reagents, and solvents were analytically pure and purchased commercially. They include 5-AT from Mobe (Shanghai) Biotech Co., Ltd. and potassium nitrate, benzoyl peroxide, and phenolic resin (PF) from Beijing Tongguang Fine Chemicals Company.…”

Section: Introductionmentioning

confidence: 99%

New Green Bio-Based Binder to Reduce the Poisonous and Harmful Gases Generated from the Combustion of Pyrotechnics

Han

Deng

et al. 2022

ACS Sustainable Chem. Eng.

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The combustion of pyrotechnics is typically fast and incomplete, resulting in air pollutants such as particulate matters (PM) and poisonous, harmful gases. Demands for environment-friendly pyrotechnics that can be applied at a low temperature with a controllable combustion rate are ever-growing. The study used bio-based dibutyl itaconate (DBI) as the reactive monomer for self-polymerization to prepare poly-dibutyl itaconate (PDIB) with a molecular weight of 5307 g/mol. The molecular structure and thermal stability of PDIB were measured and analyzed. Serving as binders, PDIB and phenolic resin (PF) were, respectively, mixed with CH 3 N 5 (5-AT) and KNO 3 to prepare a pyrotechnic formulation. The final products were tested and compared in terms of their safety, mechanical, combustion, and environment-friendly performances. The results showed that the PDIB binder pyrotechnics is featured with a slower complete combustion, a large amount of gases produced, a small amount of combustion residues, a low PM2.5 concentration, and environmentally friendly flue gases. These prove that PDIB can be used as a new environmentally friendly binder for pyrotechnics. In addition, this study discovered the "string bag" theory of the pyrotechnic binder, which implies that the monomer structure of the binder and the ignition point of the polymer are the key to determine the combustion rate of pyrotechnics.

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“…An orbital shaker would be placed in the reaction pot, and external agitation is applied. Based on Table S1, it can be seen that the residence time required for reaction systems that employ external agitation/ orbital shakers require longer residence times in order to achieve high product yield, with an average time of 24 h, where the longest residence time is reported to be 72 h. 32,46,50,51 In comparing the two agitation systems, Yu et al found that the conversion rate of itaconic acid at 65 °C is higher in a magnetic stirring system at a yield of 61.8% at 72 h, and the conversion rate is at 47.5% at 120 h for an external agitation system. The authors explained that stirring by a magnetic stirrer is more intense and promotes contact between the substrate and the enzyme.…”

Section: Type Of Reactors Used and Choice Of Enzymes In Biocatalysismentioning

confidence: 99%

“…46 Yu et al reports that Novozym 435 can produce a high purity product due to the enzyme's high selectivity that will cleave specific bonds. 46 3.7. Reusability of the Enzyme.…”

Section: Overview Of Reaction Conditionsmentioning

confidence: 99%

Enzyme Biocatalysis for Sustainability Applications in Reactors: A Systematic Review

Chook,

Aroua,

Gew

2023

Ind. Eng. Chem. Res.

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Enzyme biocatalysis is well known for its biodegradability and environmentally friendly conditions. Its novel properties such as high reaction selectivity and mild reaction conditions prove that it is a promising alternative that can overcome the global resource scarcity of the conventional chemical catalysts that are of a nonrenewable source. In this study, we documented the advancements and breakthroughs in emerging biocatalysis reactor technologies spanning over a decade. We aim to encapsulate the remarkable progress and innovations witnessed within this dynamic field. Thus, we reviewed 48 articles related to enzyme biocatalysis in the production of glycerides using reactors. The reaction parameters using a biocatalysis route were reviewed systematically and discussed in our study. In the biocatalysis transformation, the processes mainly focus on the conversion of raw material into product. In the optimization of biocatalysis, temperature and residence time parameters have been thoroughly researched in order to maximize the productivity of the enzyme activity. In the selection of reactors, the type of reactor and its agitator play a vital role in enzyme activity. We anticipate that the greenness of biocatalysis transformation could be improved if the enzymes in waste streams could be converted from another reaction to functional products. This work may serve as a stepping stone for the biocatalysis industry, acting as a precursor for industries or individuals interested in exploring this evergreen field.

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A novel environment‐friendly synthetic technology of dibutyl itaconate

Cited by 10 publications

References 29 publications

Green Composites from Partially Bio-Based Poly(butylene succinate-co-adipate)-PBSA and Short Hemp Fibers with Itaconic Acid-Derived Compatibilizers and Plasticizers

Green Composites from Partially Bio-Based Poly(butylene succinate-co-adipate)-PBSA and Short Hemp Fibers with Itaconic Acid-Derived Compatibilizers and Plasticizers

New Green Bio-Based Binder to Reduce the Poisonous and Harmful Gases Generated from the Combustion of Pyrotechnics

Enzyme Biocatalysis for Sustainability Applications in Reactors: A Systematic Review

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