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- W4378619078 endingPage "4276" @default.
- W4378619078 startingPage "4265" @default.
- W4378619078 abstract "Polysiloxane is one of the most important polymeric materials in technological use. Polydimethylsiloxane displays glass-like mechanical properties at low temperatures. Incorporation of phenyl siloxane, via copolymerization for example, improves not only the low-temperature elasticity but also enhances its performance over a wide range of temperatures. Copolymerization with the phenyl component can significantly change the microscopic properties of polysiloxanes, such as chain dynamics and relaxation. However, despite much work in the literature, the influence of such changes is still not clearly understood. In this work, we systematically study the structure and dynamics of random poly(dimethyl-co-diphenyl)siloxane via atomistic molecular dynamics simulations. As the molar ratio ϕ of the diphenyl component increases, we find that the size of the linear copolymer chain expands. At the same time, the chain-diffusivity slows down by over an order of magnitudes. The reduced diffusivity appears to be a result of a complex interplay between the structural and dynamic changes induced by phenyl substitution." @default.
- W4378619078 created "2023-05-29" @default.
- W4378619078 creator A5016354656 @default.
- W4378619078 creator A5030123751 @default.
- W4378619078 creator A5071202300 @default.
- W4378619078 creator A5079657573 @default.
- W4378619078 creator A5087977944 @default.
- W4378619078 date "2023-01-01" @default.
- W4378619078 modified "2023-10-14" @default.
- W4378619078 title "Investigating Structure and Dynamics of Unentangled Poly(dimethyl-co-diphenyl)siloxane via Molecular Dynamics Simulation" @default.
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