Elution behavior of polyethylene and polypropylene standards on carbon sorbents.
Elution behavior of polyethylene and polypropylene standards on carbon sorbents.
复制标题
聚乙烯和聚丙烯标准品在碳吸附剂上的洗脱行为
DOI:
10.1016/j.chroma.2010.10.036
复制
发表时间:
2010
期刊:
影响因子:
--
通讯作者:
G. Kalies
中科院分区:
文献类型:
--
作者:
R. Chitta;T. Macko;R. Brüll;G. Kalies
The elution behavior of linear polyethylene and isotactic, atactic and syndiotactic polypropylene was tested using three different carbon column packings: porous graphite (Hypercarb), porous zirconium oxide covered with carbon (ZirChrom-CARB), and activated carbon TA 95. Several polar solvents with boiling points above 150°C were selected as mobile phases: 2-ethyl-1-hexanol, n-decanol, cyclohexylacetate, hexylacetate, cyclohexanone, ethylene glycol monobutyl ether and one non-polar solvent, n-decane. Polyethylene standards were completely or partially adsorbed in all tested sorbent/solvent systems. Polypropylene standards were partially adsorbed on Hypercarb and carbon TA95, but did not adsorb on ZirChrom-CARB. ZirChrom-CARB retained polyethylene pronouncedly when 2-ethyl-1-hexanol, cyclohexylacetate or hexylacetate were used as mobile phases at temperature 150 or 160°C, while all three basic stereoisomers of polypropylene eluted in size exclusion mode in these sorbent/solvent pairs. This is very different from the system Hypercarb/1-decanol, which separated polypropylene according to its tacticity. The opposite elution behavior of polyethylene and polypropylene in system ZirChrom-CARB/2-ethyl-1-hexanol (polypropylene eluted, polyethylene fully adsorbed) enabled to realize separation of blends of polyethylene and polypropylene. Ethylene/1-hexene copolymers were separated according to their chemical composition using system Hypercarb/2-ethyl-1-hexanol/1,2,4-trichlorobenzene.
登录
查看更多内容
DOI:
--
发表时间:
1994
期刊:
影响因子:
--
作者:
J. Kriz;E. Adamcová;J. Knox;Josef Hora
通讯作者:
Josef Hora
影响因子:
4.1
作者:
T. Macko;H. Pasch;R. Brüll
通讯作者:
R. Brüll
DOI:
--
发表时间:
1987
期刊:
影响因子:
--
作者:
F. Mirabella;E. Ford
通讯作者:
E. Ford
DOI:
--
发表时间:
1978
期刊:
影响因子:
--
作者:
H. E. Kern;A. Piechocki;U. Brauer;G. Findenegg
通讯作者:
G. Findenegg
DOI:
--
发表时间:
2003
期刊:
影响因子:
--
作者:
T. Macko;R. Brüll;H. Pasch
通讯作者:
H. Pasch