Effect of polyvinyl alcohol additive on the pore structure and morphology of the freeze-cast hydroxyapatite ceramics

2010 ◽  
Vol 30 (2) ◽  
pp. 283-287 ◽  
Author(s):  
Kai Hui Zuo ◽  
Yu-Ping Zeng ◽  
Dongliang Jiang
Keyword(s):  
Polyvinyl Alcohol ◽  
Pore Structure ◽  
Structure And Morphology ◽  
Hydroxyapatite Ceramics

Preparation Cell Scaffolds with Well Defined Pore Structure Through Elastic Porogen/Pressure Filtration

2011 ◽  
Vol 236-238 ◽  
pp. 1897-1901 ◽  
Author(s):  
Qian Qian Qi ◽  
Ji Da Chen ◽  
Su Zhao Gao ◽  
Juan Bu ◽  
Zhi Ping Qiu
Keyword(s):  
Tissue Engineering ◽  
Pore Structure ◽  
Water Solubility ◽  
Pressure Filtration ◽  
Structure And Morphology ◽  
Novel Technique ◽  
Cell Scaffolds ◽  
Cell Scaffold ◽  
Specific Shape ◽  
Filtration Technique

Tissue engineering involves the use of living cells and cell scaffolds to develop biological substitutes for tissue replacements, it is one of promising ways for rehabilitation and reconstruction functional tissue and organs. In order to engineer substitutes for tissue replacements, cell scaffolds with specific shape and pore structure are required. A novel “elastic porogen/pressure filtration technique” was put forward and studied firstly in this paper to overcome the disadvantages of the existed techniques for cell scaffold fabrication. The properties of elastic porogen (deformation ratio, water solubility, appearance and dimension) and pore structure of scaffolds were studied, respectively. The experimental results demonstrated that the scaffolds with well defined pore structure can be formed through this novel technique, and the pore shape and sizes as well as size of openings between pores could be manual controlled conveniently. The pore structure and morphology of scaffolds were satisfied to the requirements of tissue engineering, which suggested that elastic porogen/pressure filtration technique was an ideal cell scaffold forming technique.

A new approach to preparing porous carbons with controllable pore structure and morphology

2014 ◽  
Vol 50 (94) ◽  
pp. 14824-14827 ◽  
Author(s):  
Yi Gu ◽  
Zhigang Xiong ◽  
Wael Al Abdulla ◽  
Guohua Chen ◽  
X. S. Zhao
Keyword(s):  
Pore Structure ◽  
Porous Carbons ◽  
New Approach ◽  
Structure And Morphology

Porous Carbon Prepared by a Template-Like Method Using Non-Porous Pumice Mineral as Template

2010 ◽  
Vol 160-162 ◽  
pp. 1028-1031
Author(s):  
Gui Yang Liu ◽  
Yan Nan Li ◽  
Jun Ming Guo ◽  
Bao Sen Wang
Keyword(s):  
Pore Structure ◽  
Porous Carbon ◽  
Carbon Sources ◽  
Nitrogen Adsorption ◽  
Porous Carbons ◽  
Structure And Morphology ◽  
Surface Areas ◽  
Study Results

Porous carbons have been prepared by a template-like method using non-porous pumice mineral as a “template”, and sucrose and furfuralcohol as carbon sources. Nitrogen adsorption and scanning electric microscope (SEM) have been used to investigate the pore structure and morphology of the samples. The study results indicate that the surface areas of the carbons prepared from sucrose and furfuralcohol are 208 and 268 m2/g, respectively. The carbon prepared from sucrose is microporous, and the carbon prepared from furfuralcohol is a carbon with both micropores and mesopores.

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