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模擬聚合物分子在氧化鋁表面的吸附現象(II)

Molecular Dynamics Simulation of Polymers Adsorbed on Alumina Surface (II)

摘要


我們以diphenylene oxide (DPO)、diphenylene sulfide (DPS)、diphenylketone (DPK)、diphenylsulfone (DPSO)、diphenylpropane (DPP)和diphenylmethane (DPM)等六個聯苯化合物(Ph -X-Ph , X = -O-, -SO, -CO-, .SO_2-, C(CH_3)_2-, -CH_2-)的結構分析為基礎,發現其亞苯基(phenylene)間的扭轉角度(torsional angle)有一寬的「低限能量範圍」(low-energy region)。在此我們使用分子動力學(molecular dyanmics)的技術,模擬比較poly(p-phenylene oxide ) (PPO)、polytp -phenylene sulfide)(PPS) , poly(p-phenylketone) (PPK),poly(p-phenylsulfone) (PPSO),poly(methyl-1,4-phenylene) (PMP)和poly(iso-propyl- 1, 4-phenylene) (PIPP)等六個聚合物在氧化鋁表面的吸附現象,探討以亞苯基為骨架聚合物在氧化鋁表面吸附過程中形成的機制和扮演的角色。我們發現這些寬的「低限能量範圍」,將有助於以亞苯基為骨架的聚合物在氧化鋁表面吸附過程中產生結構變形,而有利於聚合物和其官能基在氧化鋁表面尋得較佳的位向吸附。

關鍵字

分子模擬 聚合物 氧化鋁 吸附

並列摘要


Our laboratory seeks to analyze the conformations of a series of diphenyllinkages (Ph-X-Ph, where X = -0-, -So, -CO-, -SO_2-, C(CH_3)_2- and –CH_2-). The components include diphenylene oxide (DPO), diphenylene sulfide (DPS), diphenylketone (DPK), diphenylsulfone (DPSO), diphenylpropane (DPP) and diphenylmethane (DPM). They all show that there are a wide low-energy region in the rotations of torsional angles. The phenomenon is a favorable deformation of the polymer chains with phenylenes in the backbone. A comparative project, based on the abovementioned phenomenon, includes the use of molecular dynamics (MD) techniques to simulate the interactions of poly(p-phenylene oxide ) (PPO) , poly (p-phenylene sulfide) (PPS), poly (p-phenylketone) (PPK) , poly (p-phenylsulfone) (PPSO), poly (methyl-1,4-phenylene) (PMP) and poly (isopropyl-Ld-phenylene) (PIPP) with an idealized alumina surface. The work is helpful to understand the mechanism and behavior ofpolyphenyllikages on the alumina surface.

並列關鍵字

Molecular Modeling Polymer Alumina Adsorption

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