Molecular and Mesoscale Simulation Methods for Polymer Materials

نویسندگان

  • Sharon C. Glotzer
  • Wolfgang Paul
چکیده

■ Abstract Polymers offer a wide spectrum of possibilities for materials applications, in part because of the chemical complexity and variability of the constituent molecules, and in part because they can be blended together with other organic as well as inorganic components. The majority of applications of polymeric materials is based on their excellent mechanical properties, which arise from the long-chain nature of the constituents. Microscopically, this means that polymeric materials are able to respond to external forces in a broad frequency range, i.e., with a broad range of relaxation processes. Computer simulation methods are ideally suited to help to understand these processes and the structural properties that lead to them and to further our ability to predict materials properties and behavior. However, the broad range of timescales and underlying structure prohibits any one single simulation method from capturing all of these processes. This manuscript provides an overview of some of the more popular computational models and methods used today in the field of molecular and mesoscale simulation of polymeric materials, ranging from molecular models and methods that treat electronic degrees of freedom to mesoscopic field theoretic methods.

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Modeling of nanomaterials: recent applications and new tools development

Modeling and simulation of nanomaterials and devices require realistic description of the system across various length and time scales. In this regard, a multiscale mode-ling approach of the system starting from quantum mechanical modeling to describe the electronic structure and optical properties, atomistic molecular dynamics (MD) calculations to describe diffusion processes, and meso scale s...

متن کامل

Mesoscale simulations of polymer dynamics in microchannel flows

The non-equilibrium structural and dynamical properties of flexible polymers confined in a square microchannel and exposed to a Poiseuille flow are investigated by mesoscale simulations. The chain length and the flow strength are systematically varied. Two transport regimes are identified, corresponding to weak and strong confinement. For strong confinement, the transport properties are indepen...

متن کامل

Novel approaches to multiscale modelling in materials science

Computational modelling techniques are now widely employed in materials science, due to recent advances in computing power and simulation methodologies, since they can enable rapid testing of theoretical predictions or understanding of complex experimental data at relatively low cost. However, many problems at the leading edge of materials science involve collective phenomena that occur over a ...

متن کامل

ultiscale molecular modeling in nanostructured material design and process

Atomistic-based simulations such as molecular mechanics, molecular dynamics, and Monte Carlo-based methods have come into wide use for material design. Using these atomistic simulation tools, we can analyze molecular structure on the scale of 0.1–10 nm. However, difficulty arises concerning limitations of the time and length scale involved in the simulation. Although a possible molecular struct...

متن کامل

Mechanical Properties of CNT-Reinforced Polymer Nano-composites: A Molecular Dynamics Study

Understanding the mechanism underlying the behavior of polymer-based nanocomposites requires investigation at the molecular level. In the current study, an atomistic simulation based on molecular dynamics was performed to characterize the mechanical properties of polycarbonate (PC) nanocomposites reinforced with single-walled armchair carbon nanotubes (SWCNT). The stiffness matrix and elastic p...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2002