The threshold point of the phase separation of the system of heterogeneous polymer in mixed solvent and the problem of the polymer fractionation

1958 ◽  
Vol 33 (126) ◽  
pp. 507-509 ◽  
Author(s):  
Hiroshi Okamoto
Keyword(s):  
Phase Separation ◽  
Mixed Solvent ◽  
Heterogeneous Polymer ◽  
Polymer Fractionation ◽  
Threshold Point

Nanoporous polyethersulfone membranes prepared by mixed solvent phase separation method for protein separation

2021 ◽  
pp. 119507
Author(s):  
Peipei Li ◽  
Roshni L. Thankamony ◽  
Xiang Li ◽  
Zhen Li ◽  
Xiaowei Liu ◽  
...  
Keyword(s):  
Phase Separation ◽  
Protein Separation ◽  
Mixed Solvent ◽  
Separation Method ◽  
Solvent Phase

Fabrication of NF-PLLA Scaffolds by Gel Extraction Phase Separation

2014 ◽  
Vol 1033-1034 ◽  
pp. 1090-1093
Author(s):  
Zhi Hang He ◽  
Jia Liu ◽  
Guo Jie Xu ◽  
Jian Jin Jiao ◽  
Xiu Feng Xiao
Keyword(s):  
Phase Separation ◽  
Bone Tissue ◽  
Mixed Solvent ◽  
Solvent System ◽  
Separation Method ◽  
Interconnected Network ◽  
Nanofibrous Scaffolds ◽  
And Performance ◽  
Gel Temperature ◽  
Extraction Phase

The 1, 4-dioxane/ethanol mixed solvent was used as solvent system, and the gel extraction phase separation method was adopted to prepare porous PLLA nanofibrous scaffolds. At that, we studied the effect of using different gel temperature to influence nanofibrous PLLA scaffolds’ structure and performance. The results showed that the morphology of nanofibers and the diameter of fibers could be regulated by gel temperature; a lower gel temperature resulted in higher crystallinity of PLLA scaffold. In addition, the PLLA scaffolds have excellent interconnected network when the gel temperature was in the range of-20 to-10°C. The PLLA scaffolds will become a material to repair the bone tissue, hopefully.

A biomimetic 3D microtubule-orientated poly(lactide-co-glycolide) scaffold with interconnected pores for tissue engineering

2015 ◽  
Vol 3 (21) ◽  
pp. 4417-4425 ◽  
Author(s):  
Hong Shen ◽  
Yuguang Niu ◽  
Xixue Hu ◽  
Fei Yang ◽  
Shenguo Wang ◽  
...  
Keyword(s):  
Tissue Engineering ◽  
Phase Separation ◽  
Mixed Solvent ◽  
Separation Technique ◽  
Interconnected Pores

We constructed microtubule-orientated PLGA scaffolds with interconnected pores by an improved thermal-induced phase separation technique using a mixed solvent of 1,4-dioxane and water.

Fabrication of PLA Nanoporous Fibers by DMF/CF Mixed Solvent via Electrospinning

2014 ◽  
Vol 941-944 ◽  
pp. 400-403 ◽  
Author(s):  
Xiao Peng Tang ◽  
Lan Xu ◽  
Hong Ying Liu ◽  
Na Si
Keyword(s):  
Phase Separation ◽  
Specific Surface ◽  
Surface Area ◽  
Specific Surface Area ◽  
Convenient Method ◽  
Mixed Solvent ◽  
Solvent System ◽  
Polymer Fibers ◽  
Nanoporous Surface ◽  
Scanning Electron

Electrospinning represents a simple and convenient method for generating polymer fibers has been widely applied to produce porous nanofibers. The PLA fibers obtained in this research showed a significant nanoporous surface by varying solvent compositions of chloroform (CF) and N,N-dimethylformamide (DMF).The nanopores produced by phase separation of solvent system were observed by means of scanning electron microscope.The approach showed the fabrication of electrospun nanoporous fibers possessing ultrahigh specific surface area without any post-treatment.

Phase separation and heat-induced gelation characteristics of cellulose acetate in a mixed solvent system

Cellulose ◽  
2010 ◽  
Vol 17 (3) ◽  
pp. 533-538 ◽  
Author(s):  
Collins Appaw ◽  
Richard D. Gilbert ◽  
Saad A. Khan ◽  
John F. Kadla
Keyword(s):  
Phase Separation ◽  
Cellulose Acetate ◽  
Mixed Solvent ◽  
Solvent System ◽  
Mixed Solvent System
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