[Study on quantitative analysis of cross linked copolymer by IR].

Cross linked copolymer silicon oil-Co-lactide (Si-co-LA) was analyzed quantitatively by IR. Potassium sulfocyanate (KSCN) was chosen as an inside mark material, because it has only one strong absorption peak at 2 100 cm(-1) and the peak was chosen as its quantitative peak. The peak at 1750 cm(-1) is the characteristic absorption of carbonyl and was chosen as thequantitative peak of lactide (LA).

[Study on measuring host-guest ratio of inclusion compound of beta-CD-permethrin by IR].

Permethrin is one of the agrochemicals used in tea gardens currently with the characteristic of being easily decomposed in light. Permethrin with beta-cyclodextrin(CD) made into Inclusion Compound (IC) can increase its stability and reduce dosage to remain on the tea. Host/guest ratio is one of the important parameters of IC.