摘要
The inclusion complex of benzyl acetate (BA) with β-cyclodextrin (β-CD) was pre-pared and was confirmed by thermal analysis and X-ray diffeaction (XRD). The composition of thecomplex was identified by thermogravimetry (TG) and elemental analysis as β-CD.C9H10O2 .6H2O.TG and DSC studies showed that the thermal dissociation of β-CD.C9H10O2.6H2O took place inthree stages: the dehydration occurred at 80-120 ℃; the dissociation of β-CD.C9H10O2 occurredat 245-270℃; and the decomposition of β-CD began at 285℃. The kinetics of dissocia-tion of β-CD.C9H10O2 was studied by means of TG. The results showed that the dissociation ofβ-CD.C9H10O2 was controlled by a two-dimensional random nucleation and subsequent growthprocess (A3), the activation cnergy E is 172.85kJ.mol-1, and the pre-exponential factor A is1.1392×1016.min- 1.
The inclusion complex of benzyl acetate (BA) with β-cyclodextrin (β-CD) was pre-pared and was confirmed by thermal analysis and X-ray diffeaction (XRD). The composition of thecomplex was identified by thermogravimetry (TG) and elemental analysis as β-CD.C9H10O2 .6H2O.TG and DSC studies showed that the thermal dissociation of β-CD.C9H10O2.6H2O took place inthree stages: the dehydration occurred at 80-120 ℃; the dissociation of β-CD.C9H10O2 occurredat 245-270℃; and the decomposition of β-CD began at 285℃. The kinetics of dissocia-tion of β-CD.C9H10O2 was studied by means of TG. The results showed that the dissociation ofβ-CD.C9H10O2 was controlled by a two-dimensional random nucleation and subsequent growthprocess (A3), the activation cnergy E is 172.85kJ.mol-1, and the pre-exponential factor A is1.1392×1016.min- 1.
出处
《物理化学学报》
SCIE
CAS
CSCD
北大核心
1997年第5期459-465,共7页
Acta Physico-Chimica Sinica
关键词
Β-环糊精
乙酸苄酯
包合物
热分解动力学
β-Cyclodextrin, Benzyl acetate, Inclusion complex, Thermal dissociation
