The Universal Calibration of Polyaluminocarbosilane and Determination of Mark-Houwink Constant

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/).

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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  -