Free volume characteristics of 2,<scp>2‐bistrifluoromethyl</scp>‐4,5‐difluoro‐1,3‐dioxole‐<i>co</i>‐tetrafluoroethylene copolymers: Effect of composition and molecular weight

Yu, Dayang; Mao, Guoyong; Cai, Huaixun; Wang, Shuhua; Liu, Jing; Pan, Pengju; Bao, Yongzhong

doi:10.1002/pol.20200834

Cited by 3 publications

(1 citation statement)

References 31 publications

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“…Computer simulation has been an effective method to study the solvation and gelation behaviors [ 14 , 15 ]. Cheng et al revealed that the formation and fracture of bridge hydrogen bonds caused by bubbling and CO 2 removal were the key factors leading to the CO 2 /N 2 switchable sol–gel transition behavior [ 16 ].…”

Section: Introductionmentioning

confidence: 99%

Experimental and Molecular Dynamics Simulation Study on Sol–Gel Conversion Process of Aluminum Carboxylate System

Luo

Yao

et al. 2022

Materials

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Due to the lack of relevant in situ characterization techniques, the investigation of aluminum sol–gel progress is lacking. In this study, combined with molecular dynamics simulation and conventional experimental methods, the microstructures, rheological properties, and gelation process of the carboxylic aluminum sol system were studied. The experimental results showed that, with the increase in solid content, the microstructure of the colloid developed from a loose and porous framework to a homogeneous and compact structure. The viscosity of aluminum sol decreased significantly with the increase in temperature, and a temperature above 318 k was more conducive to improving the fluidity. The simulation results show that the increase in free volume and the connectivity of pores in colloidal framework structure were the key factors to improve fluidity. In addition, free water molecules had a higher migration rate, which could assist the rotation and rearrangement of macromolecular chains and also played an essential role in improving fluidity. The Molecular dynamics simulation (MD) results were consistent with experimental results and broaden the scope of experimental research, providing necessary theoretical guidance for enhancing the spinning properties of aluminum sol.

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Section: Introductionmentioning

confidence: 99%

Experimental and Molecular Dynamics Simulation Study on Sol–Gel Conversion Process of Aluminum Carboxylate System

Luo

Yao

et al. 2022

Materials

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2,2‐Bistrifluoromethyl‐4,5‐difluoro‐1,3‐dioxole‐co‐tetrafluoroethylene copolymers with different compositions: Synthesis, chain and condensed matter structures and optical properties

Mao

Wang

et al. 2022

J of Applied Polymer Sci

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Synthesis of 2,2-bistrifluoromethyl-4,5-difluoro-1,3-dioxole-co-tetrafluoroethylene (PDD-TFE) copolymers with precise chemical structures and understanding effects of the structures on properties are essential for their application. Herein, PDD-TFE copolymers with different average compositions and narrow composition distributions (NCDs) were synthesized and applied to study the influences of chemical structures on condensed matter structures and optical properties of copolymers. The average length of (P TFE ) n sequences were decreased from 7.62 to 1.63, and percentage of TFE in long (P TFE ) n sequences (n > 5) decreased from approximately 50% to less than 1%, as PDD molar fraction in the copolymer (F PDD ) increased from 13.24% to 52.22%. Consequently, the copolymer with F PDD = 13.24% was semi-crystalline with a crystallinity degree of 11.57% (determined by WAXD),

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Five-membered ring systems: with O and S (Se, Te) atoms

Aitken

Power

2023

Progress in Heterocyclic Chemistry

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Free volume characteristics of 2,2‐bistrifluoromethyl‐4,5‐difluoro‐1,3‐dioxole‐co‐tetrafluoroethylene copolymers: Effect of composition and molecular weight

Cited by 3 publications

References 31 publications

Experimental and Molecular Dynamics Simulation Study on Sol–Gel Conversion Process of Aluminum Carboxylate System

Experimental and Molecular Dynamics Simulation Study on Sol–Gel Conversion Process of Aluminum Carboxylate System

2,2‐Bistrifluoromethyl‐4,5‐difluoro‐1,3‐dioxole‐co‐tetrafluoroethylene copolymers with different compositions: Synthesis, chain and condensed matter structures and optical properties

Five-membered ring systems: with O and S (Se, Te) atoms

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