Highly efficient synthesis of polyvinyl butyral (PVB) using a membrane dispersion microreactor system and recycling reaction technology

Lin, Xiyan; Yan, Stone; Zhou, Baiyang; Wang, Kai; Zhang, Jisong; Luo, Guangsheng

doi:10.1039/c7gc00670e

Cited by 32 publications

(25 citation statements)

References 23 publications

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“…PVA reacts with aldehydes to form six‐membered rings primarily between adjacent and intramolecular hydroxyl groups. [ 106 ] PVB is a clear, colorless, amorphous thermoplastic exhibiting excellent flexibility and film formation, good adhesion, and outstanding UV resistance. The PVB properties (namely, the solubility in various solvents and compatibility with binders and plasticizers) depend on the degrees of acetalization and polymerization.…”

Section: Properties and Classification Of Psc Polymeric Additivesmentioning

confidence: 99%

Role and Contribution of Polymeric Additives in Perovskite Solar Cells: Crystal Growth Templates and Grain Boundary Passivators

et al. 2021

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Polymers or polymeric materials are used as additives for promoting the nucleation and crystallization of perovskite films to increase the crystal grain size. Due to their high molecular weight, polymers remain within perovskite‐crystal grain boundaries (GBs), where they passivate trap sites. Furthermore, some polymers function as charge‐transport materials in interfacial layers to effectively separate charge carriers and reduce charge recombination. Certain hydrophobic polymers protect perovskite films against moisture, whereas elastic polymers contribute to the mechanical resilience of perovskite films by crosslinking and self‐healing. Although polymeric additives have become essential to perovskite fabrication, a thorough review has not summarized their application to perovskite solar cells. Therefore, various strategies are comprehensively discussed for incorporating typical polymers and 1D polymeric materials into perovskite materials to improve the efficiency and stability of perovskite devices. Herein, thermoplastic, hydrophilic, and conductive polymers and elastomers are focused and related works are chronologically discussed to clearly elucidate the advances in perovskite devices.

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Section: Properties and Classification Of Psc Polymeric Additivesmentioning

confidence: 99%

Role and Contribution of Polymeric Additives in Perovskite Solar Cells: Crystal Growth Templates and Grain Boundary Passivators

et al. 2021

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“…The bands at 1050 and 1150 cm −1 correspond to symmetric and asymmetric stretchings of C C vibrations present in the butyral ring, while the band at 1740 cm −1 is attributed to the presence of acetal groups. 23 Nuclear Magnetic Resonance. 1,21 All the spectra are similar, and, with the exception of the PVB/CNT 0.1, all samples present a 1560 cm −1 band relative to a symmetrical C C C stretch.…”

Section: Characterization Of Nanoparticlesmentioning

confidence: 99%

Role of the degree of acetalization on dynamic mechanical properties of polyvinyl butyral/carbon nanotube composites

Hoepfner

Loos

Pezzin

2019

J of Applied Polymer Sci

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In this work, polyvinyl butyral (PVB) nanocomposites reinforced with 0.1-1.0 wt % of pristine [carbon nanotube (CNT)] or oxidized (CNTO) multiwalled CNTs were synthesized via in situ polymerization. It was found that the presence of the reinforcement during the synthesis altered the degree of acetalization of PVB. Dynamic mechanical analyses showed that PVB nanocomposites containing 0.5 wt % of pristine CNT had the best adhesion factor, with increases of about 30% in the storage modulus. On the other hand, PVB/CNTO 1.0 wt % nanocomposites achieved the best reinforcement efficiency factor ("C" coefficient). It is concluded that the in situ polymerization improves dispersion and final properties of the nanocomposite only if the nanoparticles are able to form relevant interfacial interactions during the PVB synthesis. In addition, it was verified that the presence of CNT or CNTO altered the degree of acetalization of PVB, which strongly influences the final properties of the nanocomposites.

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“…PVB resin has high mechanical transparency, good mechanical properties, and good adhesion to glass, ceramics, metals and other materials [5][6][7], so it is mainly made into films used in safety glass, photovoltaic battery interlayer materials [6], in addition to widely used in coatings, aluminum foil paper and other aspects [9][10][11]. Due to the expansion of the automotive industry, the demand for PVB films with sound insulation, UV resistance, high impact strength, transparency, and high and low temperature resistance will continue to increase [12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Polyvinyl Butyral Synthesis Process Based on Deep Eutectic Solvent as a Catalyst

Xue

Sun

et al. 2021

AJOCS

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Polyvinyl butyral (PVB) was prepared by the condensation reaction of polyvinyl alcohol (PVA) with n-butyraldehyde using a catalyst which is a kind of deep eutectic solvent (DES) made of dodecyltrimethylammonium chloride and p-toluenesulfonic acid. The raw materials and products were characterized by Fourier transform infrared spectroscopy (FT-IR). The effects of the following reaction conditions on the degree of PVB acetal, yield and agglomeration of the products were investigated: the mass ratio of n-butyraldehyde to PVA (mBA/mPVA) of 0.48-0.96, the mass ratio of catalyst to PVA (mcat/mPVA) of 0.16-0.64, the low temperature reaction temperature (5-20℃), and the low temperature reaction time (1-3h). The results showed that at mBA/mPVA =0.8, mcat/mPVA =0.32, low temperature reaction temperature of 15°C and low temperature reaction time of 2 hours, the obtained PVB was a homogeneous powder with the highest acetal degree of 73.85%.

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Highly efficient synthesis of polyvinyl butyral (PVB) using a membrane dispersion microreactor system and recycling reaction technology

Abstract: The application of a membrane dispersion microreactor provides a highly efficient alternative for the synthesis of PVB.

Cited by 32 publications

References 23 publications

Role and Contribution of Polymeric Additives in Perovskite Solar Cells: Crystal Growth Templates and Grain Boundary Passivators

Role and Contribution of Polymeric Additives in Perovskite Solar Cells: Crystal Growth Templates and Grain Boundary Passivators

Role of the degree of acetalization on dynamic mechanical properties of polyvinyl butyral/carbon nanotube composites

Polyvinyl Butyral Synthesis Process Based on Deep Eutectic Solvent as a Catalyst

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