Study on Mass Transfer during the Formation of PLLA 3-D Scaffolds by ScCO2 Induced Phase Separation

被引：0
|
作者：
Ding, Zhaohong [1 ]
Liu, Zhijun [1 ]
Wei, Wei [1 ]
Li, Zhiyi [1 ]
机构：
[1] Dalian Univ Technol, Sch Chem Engn, Inst Fluid & Power Engn, Dalian 116024, Peoples R China
来源：
ADVANCES IN CHEMICAL ENGINEERING II, PTS 1-4 | 2012年 / 550-553卷
关键词：
3-D scaffold; ScCO2 Induced Phase Separation; Mass Transfer; PLLA;
D O I：
10.4028/www.scientific.net/AMR.550-553.849
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
The two-way mass transfer behavior between solvent and non-solvent is a key factor effecting on the pore size and size distribution of 3-D scaffolds formed by ScCO2 induced phase separation process. The mathematical model of the mass transfer related to this process is presented on the basis of the model developed by Reuvers. By means of the composition paths calculated by this model in the ternary phase diagram, the pore size and size distribution of PLLA 3-D scaffolds are analyzed under different conditions (solution concentrations, CO2 pressures and temperatures).The calculated results are verified by experiment. The results show that the pore size of the PLLA 3-D scaffolds increases with the decrease of solution concentration and increase of the CO2 pressure and temperature.
引用
收藏
页码：849 / 854
页数：6
相关论文
共 50 条
  • [21] Mass transport during phase formation in the Y2O3-Bi2O3 system
    Belkova, TB
    Neiman, AY
    Konysheva, EY
    INORGANIC MATERIALS, 1997, 33 (08) : 835 - 838
  • [22] Mass Transport during Phase Formation in the Y2O3-Bi2O3 System
    Belkova, T. B.
    Neiman, A. Y.
    Konysheva, E. Y.
    Inorganic Materials, 33 (08):
  • [23] 3-D MHD SIMULATION OF THE FORMATION OF SPIRAL PLASMA FLOWS DURING COLLISION OF 2 CURRENT LOOPS
    FUSHIKI, T
    SAKAI, J
    SOLAR PHYSICS, 1995, 161 (02) : 317 - 330
  • [24] Role of oxides of 3-d elements during the process of formation of phase composition and structure of wear-resistant glassceramic
    Bobkova, NM
    Barantseva, CE
    GLASS SCIENCE AND TECHNOLOGY, 2002, 75 : 247 - 250
  • [25] Functionalization of PCL-3D electrospun nanofibrous scaffolds for improved BMP2-induced bone formation
    Miszuk, Jacob M.
    Xu, Tao
    Yao, Qingqing
    Fang, Fang
    Childs, Josh D.
    Hong, Zhongkui
    Tao, Panning
    Fong, Hao
    Sun, Hongli
    APPLIED MATERIALS TODAY, 2018, 10 : 194 - 202
  • [26] Nonsolvent induced phase separation (NIPS)-based 3D plotting for 3-dimensionally macrochanneled poly(ε-caprolactone) scaffolds with highly porous frameworks
    Shin, Kwan-Ha
    Jo, In-Hwan
    Kim, Sung-Eun
    Koh, Young-Hag
    Kim, Hyoun-Ee
    MATERIALS LETTERS, 2014, 122 : 348 - 351
  • [27] An experimental study on the relationship between heat transfer rate during fabrication and 3D pore architecture of alginate scaffolds
    Parks, W. M.
    Guo, Y. B.
    PROCEEDINGS OF THE ASME INTERNATIONAL CONFERENCE ON MANUFACTURING SCIENCE AND ENGINEERING - 2007, 2007, : 659 - 664
  • [28] Chemism and mass-transfer routes during phase formation in the V2O5|M0O3 system
    Neiman, AY
    Trafieva, MF
    Kostikov, YP
    RUSSIAN JOURNAL OF INORGANIC CHEMISTRY, 2005, 50 (10) : 1472 - 1484
  • [29] Nonmonotonic temperature dependence of the mass transfer rate during isotopic phase separation of 3He-4He solid mixtures
    Gan'shin, AN
    Grigor'ev, VN
    Maidanov, VA
    Omelaenko, NF
    Penzev, AA
    Rudavskii, EY
    Rybalko, AS
    LOW TEMPERATURE PHYSICS, 1999, 25 (04) : 259 - 262
  • [30] 3D nanofibrous poly(L-lactic acid) scaffolds with large pores fabricated with a single thermally induced phase separation method
    Zheng, Xiong-Fei
    Zhai, Wen-Jie
    Liang, Ying-Chun
    Sun, Tao
    Gongneng Cailiao/Journal of Functional Materials, 2010, 41 (SUPPL. 1): : 184 - 188
12345