Lewis acidic deep eutectic solvents as catalysts for rosin polymerization

Yu, Yali; Yu, Fengli; Li, Lu; Yuan, Bing; Xie, Congxia; Yu, Shitao

doi:10.1039/d3nj04425d

Cited by 3 publications

(3 citation statements)

References 29 publications

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“…This result fully showed that too weak acid strength could not achieve a rational catalytic effect, and too strong acid strength will cause some side reactions. This result was in good agreement with the previous literature, 22 so rosin polymerization needed appropriate acid strength.…”

Section: Study On Rosin Polymerization 331 Catalytic Performances Of ...supporting

confidence: 93%

“…The green synthesis technology of polymerized rosin under a deep eutectic solvent system is shown in Figure 2. Using 15 g of rosin as raw material 22 and 17.20 mL of toluene as a solvent, it was carried out in a 150 mL threenecked flask. First of all, the rosin needed to be completely dissolved in the solvent by mechanical stirring at 70 °C, and then DES was added into the reaction liquid, the amount of which was 30% (m DES :m rosin ).…”

Section: Preparation Of Polymerized Rosinmentioning

confidence: 99%

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Sustainable Brønsted-Lewis Acid Deep Eutectic Solvent for High Conversion of Rosin to Polymerized Rosin

Zheng,

Ji,

Wang

et al. 2024

Macromolecules

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The use of renewable rosin as a raw material to prepare rosin-based polymers with good properties had aroused great interest. This work used rosin as raw material and acid deep eutectic solvent [ZnCl 2 ][FA] 3 (synthesized by zinc chloride (ZnCl 2 ) and formic acid (FA)) as a catalyst for high conversion of rosin to polymerized rosin. [ZnCl 2 ][FA] 3 possessed a suitable acid strength (457 mV), with both a Brønsted acid site and Lewis acid site, in which the Brønsted acid site could effectively promote the isomerization of rosin and the Lewis acid site could effectively promote the polymerization of rosin, so polymerized rosin with a high softening point (148.40 °C) and low acid value (125.23 mg KOH/g) was obtained under the following conditions: rosin = 15 g, m DES :m rosin = 30%, T = 110 °C, and t = 9 h. [ZnCl 2 ][FA] 3 maintained good catalytic performance in all 5 cycles; on this basis, the green synthesis technology of polymerized rosin under the DES system was given and not only promoted the further application of polymerized rosin but also realized the high value-added utilization of renewable resource rosin. In addition, the formation mechanism of DES was systematically explained through DFT calculation, and the reaction mechanism of rosin polymerization over [ZnCl 2 ][FA] 3 was explored, which could provide a theoretical basis for further research.

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Section: Study On Rosin Polymerization 331 Catalytic Performances Of ...supporting

confidence: 93%

Section: Preparation Of Polymerized Rosinmentioning

confidence: 99%

Sustainable Brønsted-Lewis Acid Deep Eutectic Solvent for High Conversion of Rosin to Polymerized Rosin

Zheng,

Ji,

Wang

et al. 2024

Macromolecules

Self Cite

View full text Add to dashboard Cite

show abstract

“…Diminishing the sizing rate in the desizing process can mitigate the emission of organic pollutants with high biochemical oxygen demand (BOD), including fibers, desizing agents, and sizing materials. Furthermore, this can ameliorate the quality of weaving, reduce operational costs, minimize wastage of sizing materials, and conserve thermal energy [4][5][6]. Consequently, the development of accurate and rapid sizing rate detection technology holds substantial practical significance.…”

Section: Introductionmentioning

confidence: 99%