Microcrystalline cellulose에 자유 라디칼을 이용한 methyl methacrylate의 그래프팅 반응과 이를 이용한 천연복합필름의 제조 (Grafting of MMA onto MCC through free radical method and its application to all natural cellulose composite film preparation)

서지정보

· 발행기관 : 한국응용과학기술학회
· 수록지 정보 : 한국응용과학기술학회지 / 25권 / 4호 / 459 ~ 468페이지
· 저자명 : 이수, 박상희, 진석환, 이선영

초록

Methyl methacrylate(MMA) was grafted onto microcrystalline cellulose(MCC)
with ceric ammonium nitrate(CAN) as a redox initiator at the various conditions. The
cellulose triacetate(CTA) composite films added MCC and MMA-grafted MCC powders were
prepared on a glass plate. The graft yield(GY) and graft efficiency(GE) of the grafted MCC
were calculated with the simple equations by the weight balance method. The double bond of
C=O on the grafted MCC surfaces was confirmed by the fourier transform infrared
spectroscopy with attenuated total reflection(FT-IT ATR) spectrophotometer. After grafting,
the degree of crystallinity of cellulose powders was decresed by judging from x-ray
diffraction(XRD) data. Scanning electron microscope(SEM) photos showed the only solvent
and CAN solution could change the roughness of MCC powders and the effect of powder
dispersions in composite matrix. The tensile strength of MCC/CTA composite films was
decreased with increase of MCC powder contents. When 5% grafted MCC was added, the
tensile strength of grafted MCC/CTA composite films was increased from 82.3 MPa to 97.2
MPa. The thermal property of powders was also analyzed by the thermogravimetric
analysis(TGA).

영어초록

Methyl methacrylate(MMA) was grafted onto microcrystalline cellulose(MCC)
with ceric ammonium nitrate(CAN) as a redox initiator at the various conditions. The
cellulose triacetate(CTA) composite films added MCC and MMA-grafted MCC powders were
prepared on a glass plate. The graft yield(GY) and graft efficiency(GE) of the grafted MCC
were calculated with the simple equations by the weight balance method. The double bond of
C=O on the grafted MCC surfaces was confirmed by the fourier transform infrared
spectroscopy with attenuated total reflection(FT-IT ATR) spectrophotometer. After grafting,
the degree of crystallinity of cellulose powders was decresed by judging from x-ray
diffraction(XRD) data. Scanning electron microscope(SEM) photos showed the only solvent
and CAN solution could change the roughness of MCC powders and the effect of powder
dispersions in composite matrix. The tensile strength of MCC/CTA composite films was
decreased with increase of MCC powder contents. When 5% grafted MCC was added, the
tensile strength of grafted MCC/CTA composite films was increased from 82.3 MPa to 97.2
MPa. The thermal property of powders was also analyzed by the thermogravimetric
analysis(TGA).

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