/ 49740052

KBr holder 4000cm-1~450cm-1 8 2cm-1

(Transform Infrared Spectrometer, FTIR)

(H2SO4HNO33:1)

1 FTIR

3410cm-11714cm-11210cm-1 O-HC=OC-O

2993cm-12875cm-1 C-H

1581cm-1 C=C

1(a)0hr(b)12hr (c)24hr (d)36hrFTIR

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/ ()()

urethane group

1. urethane group C=OO-H2. urethane group N-H C=O FTIR

2 () ()()

/ FTIR FTIR

3 / (a)0 wt%(b)1 wt%(c)5 wt%(d)10 wt% FTIR

/12hr

3 3300cm-1N-H 12hr 1%(shift)3289cm-1 5% 3281cm-1 10% 3265cm-1

12hr N-H 12hr()

C=O 1. C=O 1730cm-1 2. C=O 1708cm-1

4 C=O 1730cm-1 1708cm-1 12hr 1%1730cm-1 1708cm-1 5%1708cm-1 1730cm-1 10%

4 /12hr (a)0 wt%(b)1 wt%(c)5 wt%(d)10 wt% FTIR

/24hr /36hr FTIR 4

N-H C=O

5 /24hr (a)0 wt%(b)1 wt%(c)5 wt%(d)10 wt% FTIR

6 /36hr (a)0 wt%(b)1 wt%(c)5 wt%(d)10 wt% FTIR

(FTIR)

FTIR N-H free C=0 C=O

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