Dehydrofluorination mechanism, structure and thermal stability of pure fluoroelastomer (poly(VDF-ter-HFP-ter-TFE) terpolymer) in alkaline environment

Li, Donghan; Liao, Mingyi

doi:10.1016/j.jfluchem.2017.08.002

Cited by 45 publications

(26 citation statements)

References 39 publications

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“…The dehydrofluorination degradations visually appear as a colour change to yellow or brown, concurrent with the C=C double bond formation, but can also present as the gelation of a PVDF solution due to the formation of crosslinks between adjacent PVDF chains (see Figure 11). The autocatalytic formation of C=C double bonds also increases the susceptibility of neighbouring groups to dehydrofluorination [270]. Given the limited available literature, several test experiments were performed in our labs to explore the stability of PVDF in mixtures intended for use in batteries.…”

Section: Chemical Stability Of Pvdfmentioning

confidence: 99%

On the Solubility and Stability of Polyvinylidene Fluoride

et al. 2021

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This literature review covers the solubility and processability of fluoropolymer polyvinylidine fluoride (PVDF). Fluoropolymers consist of a carbon backbone chain with multiple connected C–F bonds; they are typically nonreactive and nontoxic and have good thermal stability. Their processing, recycling and reuse are rapidly becoming more important to the circular economy as fluoropolymers find widespread application in diverse sectors including construction, automotive engineering and electronics. The partially fluorinated polymer PVDF is in strong demand in all of these areas; in addition to its desirable inertness, which is typical of most fluoropolymers, it also has a high dielectric constant and can be ferroelectric in some of its crystal phases. However, processing and reusing PVDF is a challenging task, and this is partly due to its limited solubility. This review begins with a discussion on the useful properties and applications of PVDF, followed by a discussion on the known solvents and diluents of PVDF and how it can be formed into membranes. Finally, we explore the limitations of PVDF’s chemical and thermal stability, with a discussion on conditions under which it can degrade. Our aim is to provide a condensed overview that will be of use to both chemists and engineers who need to work with PVDF.

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Section: Chemical Stability Of Pvdfmentioning

confidence: 99%

On the Solubility and Stability of Polyvinylidene Fluoride

et al. 2021

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“…Subsequently, a hydroxyl group is introduced into the molecular chain, thus resulting in the carboxyl-terminated liquid uoroelastomer. 36,37 There are two stages in the reduction of the carboxyl group by LiAlH 4 . The carboxyl group is reduced to an aldehyde in the rst stage.…”

Section: Resultsmentioning

confidence: 99%

“…Subsequently, a hydroxyl group is introduced into the molecular chain, thus resulting in the carboxyl-terminated liquid fluoroelastomer. 36,37 …”

Section: Resultsmentioning

confidence: 99%

Structure, preparation and properties of liquid fluoroelastomers with different end groups

et al. 2022

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“…As shown in Table 1 6,11,12,13). The results show that the maximum reduction rate is obtained as the amount of mixed solvent is 30 mL.…”

Section: Effect Of Solvent On Reductive Ratementioning

confidence: 99%

“…Low molecular weight LTCFs with M n ranging from 500 to 10 000 were prepared by oxidative degradation of uoroelastomers. 6,7 However, due to the properties of carboxyl groups, the LTCFs are difficult to react with cross-linking agents at low temperature and have low heat resistance stability, 8 which will inevitably affect their comprehensive properties and limit their application elds. Therefore, it is particularly important to convert the carboxyl groups into hydroxyl groups to improve the thermal stability and reduce the curing temperature of liquid uoroelastomers.…”

Section: Introductionmentioning

confidence: 99%