Fourier transform infrared spectroscopic study on the molecular structure of bis(butanoato) zinc(II) and μ4-oxohexa-μ-butanoatotetrazinc(II) complexes

Dreveni, I.; Berkesi, Ottó; Janovics, I.; Andor, J.A.; Mink, J.

doi:10.1016/0924-2031(91)85027-k

Cited by 11 publications

(3 citation statements)

References 12 publications

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“…Here, the vibrational peaks were assigned in accordance to the results reported for zinc butyrate. 61 In contrast, carbonyl (CAO) stretching of 1,697 cm Ϫ1 , which is a vibrational characteristic peak of glutaric acid and glutaric anhydride, was not detected.…”

Section: Synthesis and Characterization Of Zinc Glutarate Catalystsmentioning

confidence: 86%

A new copolymerization process leading to poly(propylene carbonate) with a highly enhanced yield from carbon dioxide and propylene oxide

Ree

Bae

Jung

et al. 1999

J. Polym. Sci. A Polym. Chem.

195

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Section: Synthesis and Characterization Of Zinc Glutarate Catalystsmentioning

confidence: 86%

A new copolymerization process leading to poly(propylene carbonate) with a highly enhanced yield from carbon dioxide and propylene oxide

Ree

Bae

Jung

et al. 1999

J. Polym. Sci. A Polym. Chem.

195

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“…The characteristic band at about 1400 cm −1 corresponds to COO − symmetric stretching and the characteristic band at about 1540 cm −1 corresponds to COO − asymmetric stretching. 31,32 Upon heating, the absorp-tion band at 1400 cm −1 disappears. Besides, the band at 1540 cm −1 splits into one broad band at about 1600 cm −1 and another band at about 1560 cm −1 .…”

Section: Formation Of Zinc/fatty Acid Salt Complex With Different Ste...mentioning

confidence: 99%

Design of Vulcanization Intermediates with Low Steric Hindrance Contributing to Vulcanization Network Formation

Hou

Xie

Liu

et al. 2023

ACS Appl. Polym. Mater.

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Sulfur cross-linking, known as vulcanization, is an extraordinarily important process to endow rubbers with practical performances in the rubber industry. However, the steric hindrance of vulcanization intermediates hinders the formation of vulcanization networks, limiting the property enhancement of vulcanized rubbers. To promote the formation of vulcanization networks, our group lowers the steric hindrance of vulcanization intermediates through decreasing the length of alkyl chain. Temperature-dependent Fourier transform infrared spectroscopy suggests the formation of bridging bidentate zinc/fatty acid salt complex (vulcanization intermediates) with different steric hindrances. The reduction in steric hindrance of vulcanization intermediates increases the coordination interactions between sulfur and vulcanization intermediates, promoting the ring-opening of sulfur and formation of vulcanization networks. As a result, with the reduction in steric hindrance of vulcanization intermediates, the properties of vulcanized rubbers improve greatly. This work promotes the formation of vulcanization network through lowering the steric hindrance of vulcanization intermediates, which provides a simple generic strategy for the development of high-performance rubbers.

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“…This reveals success in synthesizing SCA resin by the suspension free-radical copolymerization of styrene and CA. Further, Trace 3 of the potential SCA-Zn showed, apart from all of the Trace 2 features, new bands at 1723, 1641, and 1415 cm −1 , of which the former was ascribed to the stretch of noncyclic dimeric carboxyl C = O bonds [7], and the latter two, respectively, were ascribed to the antisymmetric and symmetric stretches of the C-O bonds of carboxylate groups (i.e., -COO − anions coordinating metal cations) [34,35]. This discloses that the potential SCA successfully was melt neutralized partly to produce an SCA-Zn.…”

Section: Evidence Of Success In Synthesizing Low (Half Critical) Molementioning

confidence: 99%

Melt Blending Modification of Commercial Polystyrene with Its Half Critical Molecular Weight, High Ion Content Ionomer, Poly(styrene–ran–cinnamic Acid) Zn Salt, toward Heat Resistance Improvement

Wang

et al. 2020

Polymers

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A half-critical weight-average molecular weight ( M ¯ w ) (approximately 21,000 g mol−1), high-ion-content Zn-salt poly(styrene–ran–cinnamic-acid) (SCA–Zn) ionomer was successfully synthesized by styrene–cinnamic-acid (10.8 mol %) copolymerization followed by excess-ZnO melt neutralization. At 220 °C, the SCA–Zn’s viscosity was only approximately 1.5 magnitude orders higher than that of commercial polystyrene (PS) at 102 s−1, and the PS/SCA–Zn (5–40 wt %) melt blends showed apparently fine, two-phased morphologies with blurred interfaces, of which the 95/5 and 90/10 demonstrated Han plots suggesting their near miscibility. These indicate that any PS–(SCA–Zn) processability mismatch was minimized by the SCA–Zn’s half-critical M ¯ w despite its dense ionic cross-links. Meanwhile, the SCA–Zn’s Vicat softening temperature (VST) was maximized by its cross-linking toward 153.1 °C, from that (97.7 °C) of PS, based on its half-critical M ¯ w at which the ultimate glass-transition temperature was approximated. Below approximately 110 °C, the PS/SCA–Zn (0–20 wt %) were seemingly miscible when their VST increased linearly yet slightly with the SCA–Zn fraction due to the dissolution of the SCA–Zn’s cross-links. Nevertheless, the 60/40 blend’s VST significantly diverged positively from the linearity until 111.1 °C, revealing its phase-separated morphology that effectively enhanced the heat resistance by the highly cross-linked SCA–Zn. This work proposes a methodology of improving PS heat resistance by melt blending with its half-critical M ¯ w , high-ion-content ionomer.

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Fourier transform infrared spectroscopic study on the molecular structure of bis(butanoato) zinc(II) and μ4-oxohexa-μ-butanoatotetrazinc(II) complexes

Cited by 11 publications

References 12 publications

A new copolymerization process leading to poly(propylene carbonate) with a highly enhanced yield from carbon dioxide and propylene oxide

A new copolymerization process leading to poly(propylene carbonate) with a highly enhanced yield from carbon dioxide and propylene oxide

Design of Vulcanization Intermediates with Low Steric Hindrance Contributing to Vulcanization Network Formation

Melt Blending Modification of Commercial Polystyrene with Its Half Critical Molecular Weight, High Ion Content Ionomer, Poly(styrene–ran–cinnamic Acid) Zn Salt, toward Heat Resistance Improvement

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