期刊
CHINESE JOURNAL OF POLYMER SCIENCE
卷 31, 期 12, 页码 1725-1732出版社
SPRINGER
DOI: 10.1007/s10118-013-1312-x
关键词
Cellulose; Microspheres; Functionalization; Chiral stationary phase; Chiral recognition
资金
- National Natural Science Foundation of China [50973086, 51273073]
- Hubei Provincial Department of Education of China [Z 20081501]
Micron-sized cellulose microspheres were prepared through sol-gel method using NaOH/urea solution to dissolve cellulose, then cross-linked by 1,6-hexanylene diisocyanate (HDI), toluene 2,4-diisocyanate (TDI) and 1,4-phenylene diisocyanate (PDI), respectively. The reaction conditions for partial modification of the microspheres were studied. The degree of substitution (DS) in cellulose was controlled by adjusting the reaction conditions. HDI-crosslinked microspheres were partially modified with phenyl isocyanate to obtain chiral stationary phases (CSPs). The CSPs of a lower degree of crosslinking (DC) showed better chiral recognition ability than those of a higher DC. Meanwhile the CSPs prepared by premodification exhibited better chiral recognition ability than those prepared by pre-crosslinking.
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