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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2017.1
- 수록면
- 471 - 481 (11page)
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초록· 키워드
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As the molecular weight (MW) of urea-formaldehyde (UF) resins had a great impact on their properties, this work was conducted to study effect of analytical parameters of gel permeation chromatography (GPC) on the MW measurement of UF resins. GPC parameters such as flow rate, column, detector temperature, and sample injection temperature were selected to compare number-average molecular weight (Mn), weight-average molecular weight (Mw), molecular weight distribution (MWD) and polydispersity index (PDI) of two UF resins with different viscosities. As expected, UF resin with higher viscosity resulted in greater Mn and Mw than those of low viscosity UF resin. When the flow rate increased, both Mn and Mw of UF resins decreased and MWD became narrower. By contrast, both Mn and Mw increased and MWD became wide when the column, detector, and sample injection temperature increased. The column, detector, and sample injection temperature of $50^{\circ}C$ at a flow rate of $0.5m{\ell}/min$ resulted in the highest MW and broadest MWD for the GPC analysis. These results suggest that the apparent molecular size or a hydrodynamic radius of UF resin molecules dissolved in the mobile phase affect to Mn, Mw and MWD.
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참고문헌 (22)
참고문헌 신청
Abdullah, Z.A. / 2010 / Influence of acrylamide copolymerization of urea-formaldehyde resin adhesives to their chemical structure and performance / Journal of Applied Polymer Science 117(6):3181~3186
Arif, N. / 2014 / Penetration of urea-formaldehyde resins with different formaldehyde/ urea mole ratios into softwood tissues / Wood Science and Technology 48:889~902
Despres, A. / 2006 / Colloidal aggregation of aminoplastic polycondensation resins : urea-formaldehyde versus melamine-formaldehyde and melamine-urea-formaldehyde Resins / Journal of Applied Polymer Science 100:1406~1412
Dunky, M. / 1998 / Urea-formaldehyde(UF)adhesive resins for wood / International Journal of Adhesion and Adhesives 18(2):95~107
Ferra, J. / 2010 / Characterization of urea-formaldehyde resins by GPC/SEC and HPLC techniques : effect of ageing / Journal of Adhesion Science and Technology 24:1535~1551
Arif, N. / 2014 / Penetration of urea-formaldehyde resins with different formaldehyde/ urea mole ratios into softwood tissues / Wood Science and Technology 48:889~902
Despres, A. / 2006 / Colloidal aggregation of aminoplastic polycondensation resins : urea-formaldehyde versus melamine-formaldehyde and melamine-urea-formaldehyde Resins / Journal of Applied Polymer Science 100:1406~1412
Dunky, M. / 1998 / Urea-formaldehyde(UF)adhesive resins for wood / International Journal of Adhesion and Adhesives 18(2):95~107
Ferra, J. / 2010 / Characterization of urea-formaldehyde resins by GPC/SEC and HPLC techniques : effect of ageing / Journal of Adhesion Science and Technology 24:1535~1551
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