摘要
以共混的方法制备了明胶/微纤化纤维素(Gelatin/MFC)复合膜。测定了不同MFC含量(0wt%~1wt%)下复合膜的抗拉强度[(2.3~13.3)MPa]、断裂伸长率(55%~9%)和热缩性(3.3%~1.9%)。当添加MFC到一定量时,复合膜的抗拉强度、断裂伸长率和热缩性的数值都发生了突变。结果表明,明胶/微纤化纤维素共混复合膜存在逾渗现象,逾渗阈值约为0.35wt%MFC含量。
Gelatin/MFC composite membranes were prepared by blending method. The tensile strength[(2.3~13.3)MPa], break elongation rate(55%~9%) and heat shrinkability(3.3%~1.9%) of the composite films with different MFC content(0 wt%~1 wt%) were determined. It was found that the tensile strength,break elongation rate and thermal shrinkage value of the composite films changed abruptly when the MFC was added to a certain amount. The results showed that there was percolation phenomenon in the blend membrane of gelatin/MFC, and the percolation threshold was about 0.35 wt% MFC content.
引文
[1]Lee K Y,Mooney D J.Hydrogels for Tissue Engineering[J].Chemical Reviews,2001,101(7):1871-1879.
[2]曹娜,符玉华,贺军辉.明胶膜的性能研究进展[J].高分子通报,2007,(8):1-6.
[3]Zhai M,Zhao L,Yoshii F,et al.Study on antibacterial starch/MFC blend film formed under the action of irrasiation[J].Carbohydrate Polymers,2004,57(1):83-88.
[4]ZHAO Z,Shklyaev O E,Nili A,et al.Cellulose microfibril twist,mechanics,and implication for cellulose biosynthesis[J].Journal of Physical Chemistry A,2013,117(12):2580-2589.
[5]徐博函.纤维素系吸水材料的制备及性能研究[M].北京:北京林业大学硕士学位论文,2008.
[6]Alemdar A,Sain M.Isolation and characterization of nanofibers from agricultural residues-wheat straw and soy hulls[J].Bioresource Technology,2008,99(6):1664-1671.
[7]宋孝周,郭康权,冯德君,等.农作物秸秆特性及其重组材性能[J].农业工程学报,2009,25(7):180184.
[8]项秀东,万小芳,李友明,等.微纤化纤维素的制备及其应用的研究进展[J].中国造纸,2013,10(7):59-65.
[9]Saberi A A.Recent advances in percolation theory and its applications[J].Physics Reports,2015,578(1):1-32.
[10]Vigolo B,Coulon C,Maugey M,et al.An Experimental Approach to the Percolation of Sticky Nanotubes[J].Science,2005,5736(309):920-923.
[11]Saberi A A.Percolation description of the global topography of Earth and the moon[J].Physical Review Letters,2013,110(17):2368-2373.
[12]Kalisky T,Cohen R.Width of percolation transition in complex networks[J].Physical Review E Statistical Nonlinear&Soft Matter Physics,2006,73(2):80-98.
[13]Cardy J.Turbulence:The power of two dimensions[J].Nature Physics,2006,2(2):67-68
[14]Dotsenko V S,Windey P,Harris G,et al.Critical and topological properties of cluster boundaries in the 3DIsing model[J].Physical Review Letters,1993,71(6):811.
[15]Anekal S G,Bahukudumbi P,Bevan M A.Dynamic signature for the equilibrium percolation threshold of attractive colloidal fluids[J].Phys Rev E Stat Nonlin Soft Matter Phys,2006,73(1):020403.
[16]Saberi A A.Geometrical phase transition on WO3surface[J].Applied Physics Letters,2010,97(15):2102.
[17]Baek S K,Kim B J.Critical condition of the waterretention model[J].Physical Review E Statistical Nonlinear&Soft Matter Physics,2012,85(3 Pt 1):032103.
[18]LI H,QIAN X,LI T,et al.Percolation for Coated Conductive Paper:Electrical Conductivity as a Function of Volume Fraction of Graphite and Carbon Black[J].Bioresources,2015,10(3).
[19]杨帅帅,李海朝,黄丽娟.增塑剂改性明胶膜的制备与表征[J].食品工业科技,2017,21:84-87.
[20]江泽慧,王汉坤,余雁,等.植物源微纤化纤维素的制备及性能研究进展[J].世界林业研究,2012,25(02):46-50.