The Universal Calibration of Polyaluminocarbosilane and Determination of Mark-Houwink Constant
Authors
Dafang Zhao, Xiaodong Li
Corresponding Author
Dafang Zhao
Available Online July 2015.
- DOI
- 10.2991/icaees-15.2015.48How to use a DOI?
- Keywords
- Polycarbosilane; Polyaluminocabosilane; Mark-Houwink constant
- Abstract
Polyaluminocarbosilane (PACS) is an important precursor of SiC ceramics. And the molecular distribution of PACS has an essential influence on the properties of its derived ceramics. The importance of absolute molecular weight analysis of PACS and the convenience of gel permeation chromatography ( GPC) make GPC using universal calibration curving an attractive way for PACS characterization. In this paper, the GPC calibration curve of PACS at 25 in tetrahydrofurran (THF), was determined by lsqnonlin non-linear function optimization in matlab, along with vapor pressure osmometry (VPO) and GPC characterization. With the calibration curve and GPC columns, the Mark-Houwink constant of PACS was obtained (KPACS=1.93×10-3ml/g PACS=0.75
- Copyright
- © 2015, the Authors. Published by Atlantis Press.
- Open Access
- This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).
Cite this article
TY - CONF AU - Dafang Zhao AU - Xiaodong Li PY - 2015/07 DA - 2015/07 TI - The Universal Calibration of Polyaluminocarbosilane and Determination of Mark-Houwink Constant BT - Proceedings of the 3rd International Conference on Advances in Energy and Environmental Science 2015 PB - Atlantis Press SP - 257 EP - 260 SN - 2352-5401 UR - https://doi.org/10.2991/icaees-15.2015.48 DO - 10.2991/icaees-15.2015.48 ID - Zhao2015/07 ER -