摘要:
Provision of a porous ceramic material which rapidly induces bone tissue formation and has practical strength.A porous ceramic material 11 having substantially unidirectionally oriented pores 12, a porosity of 40-90%, and an average open area of one pore of 0.05×10−3-50×10−3 mm2 both in a first sectional surface perpendicular to the pore 12 orientation direction and a second sectional surface parallel to the first sectional surface and 5 mm distant from the first sectional surface in the pore 12 Orientation direction. Using the material 11, when a cylindrical test piece (diameter 3 mm×height 5 mm, the pore 12 array direction as a height direction) made of the material is dipped in polyethylene glycol up to 1 mm from one end thereof, polyethylene glycol permeates through the whole test piece preferably within 30 seconds.
摘要翻译:提供一种快速诱导骨组织形成并具有实用强度的多孔陶瓷材料。 在垂直于孔12取向的第一截面中,具有基本上单向取向的孔12,孔隙率为40-90%,孔的平均开放面积为0.05×10 -3〜50×10 -3 mm 2的多孔陶瓷材料11 方向和平行于第一截面的第二截面,并且在孔12的方位方向上离开第一截面的距离为5mm。 使用材料11,当将由该材料制成的圆柱形试验片(直径3mm×高度5mm,作为高度方向的孔12排列方向)从其一端浸入到聚乙二醇中至多1mm时,聚乙二醇渗透通过 整个试片优选在30秒内。
摘要:
Provision of a porous ceramic material which rapidly induces bone tissue formation and has practical strength.A porous ceramic material 11 having substantially unidirectionally oriented pores 12, a porosity of 40-90%, and an average open area of one pore of 0.05×10−3-50×10−3 mm2 both in a first sectional surface perpendicular to the pore 12 orientation direction and a second sectional surface parallel to the first sectional surface and 5 mm distant from the first sectional surface in the pore 12 orientation direction. Using the material 11, when a cylindrical test piece (diameter 3 mm×height 5 mm, the pore 12 array direction as a height direction) made of the material is dipped in polyethylene glycol up to 1 mm from one end thereof, polyethylene glycol permeates through the whole test piece preferably within 30 seconds.
摘要:
An adsorbent for radioelement-containing waste composed of the following spherical layered double hydroxide (A) or spherical metal hydroxide (B) is provided. (A) is a nonstoichiometric compound represented by general formula (a) or (b): [M2+1-xM3+x(OH)2]x+[An−x/n.mH2O]x− . . . (a), [Al2Li(OH)6]x+[An−x/n.mH2O]x− . . . (b) wherein 0.1≦x≦0.4, 0
摘要翻译:提供了由以下球形层状双氢氧化物(A)或球状金属氢氧化物(B)组成的含放射性元素的废物的吸附剂。 (A)是由通式(a)或(b)表示的非化学计量的化合物:[M2 + 1-xM3 + x(OH)2] x + [An-x / n.mH2O] x-。 。 。 (a),[Al 2 Li(OH)6] x + [An-x / n.mH 2 O] x - 。 。 。 (b)其中0.1 <= x <= 0.4,0
摘要:
An adsorbent for radioelement-containing waste composed of the following spherical layered double hydroxide (A) or spherical metal hydroxide (B) is provided. (A) is a nonstoichiometric compound represented by general formula (a) or (b): [M2+1-xM3+x(OH)2]x+[An−x/n·mH2O]x− . . . (a), [Al2Li(OH)6]x+[An−x/n·mH2O]x− . . . (b) wherein 0.1≦x≦0.4, 0
摘要:
An adsorbent for radioelement-containing waste includes spherical layered double hydroxide (A) or spherical metal hydroxide (B). (A) is a nonstoichiometric compound represented by general formula (a) or (b): [M2+1-xM3+x(OH)2]x+[An−x/n.mH2O]x− (a), [Al2Li(OH)6]x+[An−x/n.mH2O]x− (b) where 0.1≦x≦0.4, 0
摘要:
A method for producing a porous body comprising apatite/collagen composite fibers comprising the steps of gelling a dispersion comprising long apatite/collagen composite fibers having an average length of 10-75 mm, short apatite/collagen composite fibers having an average length of 0.05-1 mm, and a liquid; freezing and drying the resultant gel to form a porous body; and cross-linking collagen in the porous body.
摘要:
A calcium phosphate porous sintered body which comprises spherical pores communicating with one another substantially throughout the body with a porosity of 55% or more and 90% or less, and has an average diameter of the inter-pore communicating parts of 50 &mgr;m or more, a pore diameter of 150 &mgr;m or more, and a three-point bending strength of 5 MPa or more, and a method for producing the same.
摘要:
A porous composite comprising a porous layer containing a calcium phosphate ceramic, and a dense layer formed on part of the porous layer and having a smaller average pore size than that of the porous layer. The porous composite can be produced by (1) introducing a slurry containing a calcium phosphate ceramic/collagen composite and collagen into a molding die having a high thermal conductivity, (2) rapidly freezing and drying the slurry in the molding die, to form a porous body comprising a porous layer and a dense layer formed on the porous layer, (3) cross-linking collagen in the porous body, and (4) removing the dense layer except for a portion thereof on a surface coming into contact with a soft tissue when implanted in a human body, so that the porous layer is exposed.
摘要:
In the process of producing a porous body containing a fibrous apatite/collagen composite by gelating a dispersion comprising the fibrous apatite/collagen composite, collagen and water, freeze-drying the resultant gel to form a porous body, and cross-linking collagen in the porous body, a method for controlling the average pore diameter of the porous body by the solidification time of the gel in the freezing step.
摘要:
In the process of producing a porous body containing a fibrous apatite/collagen composite by gelating a dispersion comprising said fibrous apatite/collagen composite, collagen and water, freeze-drying the resultant gel to form a porous body, and cross-linking collagen in said porous body, a method for controlling the average pore diameter of said porous body by the solidification time of said gel in said freezing step.