| 학회 |
한국고분자학회 |
| 학술대회 |
2005년 봄 (04/14 ~ 04/15, 전경련회관) |
| 권호 |
30권 1호, p.174 |
| 발표분야 |
고분자 구조 및 물성 |
| 제목 |
Solution Viscosity Behavior of Multiple polystyrenes: Computer Simulations and Experiments |
| 초록 |
We investigate the solution viscosity behavior of multiple polystyrenes using rotational-isomeric-state metropolis Monte Carlo (RMMC) simulations. The calculated results are compared with the experimental ones. The intrinsic viscosity and radius of gyration have been calculated for linear- and star-shaped polystyrene polymer models. The calculation results show that the intrinsic viscosity of star polystyrene decreases with increasing the arm number at the same molecular weight. And the intrinsic viscosity of polymers decreases in order of linear ＞ single star ＞ coupled star ＞ quadruple star at the same molecular weight. Also it is found that the multiple star polymers exhibit slightly the lower intrinsic viscosity than linear or star polymers, as previously observed for dendrimers. These behaviors are qualitatively consistent with the observed data. The simulation and experimental results reveal that the intrinsic viscosity of star-linear-star polystyrene decreases with decreasing the chain connection length between two stars. We conclude that the multiple star polystyrenes have a highly congested structure due to their multiple branches and the short connection length between stars. |
| 저자 |
이수노, 이형재, 이관영
|
| 소속 |
금호석유화학 (연) |
| 키워드 |
viscosity; computer simulation; multi star polystyrene
|
| E-Mail |
|
