- 作者: 楊美惠 ; 廖文城
- 作者服務機構: Dept. of Chemistry, National Taiwan Univ., R.O.C.
- 中文摘要: A series of monodispersed polydimenthylsiloxanes (PDMS) with molecular weights from 3K to 156K were synthesized. The intrinsic viscosity and absolute molecular weight of each monodispersed PDMS was measured and the Mark-Houwink equation for the PDMS series in toluene at 25.degree.C was derived: [.e ta.□.88 .times. 10/sup -4/M/sup 0.613/. It was proven that the accurate molecular weight determination of polysiloxanes is not possible using polystyrene (PS) standards. It can be achieved either by using a gel permeation chromatographic method with PDMS standards or by a calculation from the Mark- Houwink equation using experimental values of intrinsic viscosity.
- 英文摘要: --
- 中文關鍵字: Monodispersed Polydimethylsiloxane; Anionic Living Polymerization; Gpc Standards
- 英文關鍵字: 單分散聚合二甲基矽氧烷;陰離子活性聚合;凝膠滲透層析標準