多孔材料孔径及孔径分布的测定方法(英文)  

Methods for determining aperture of porous materials

作　　者：夏凤金[1] 吴晓玲[1] 刘培生[1] 

机构地区：[1]北京师范大学射线束技术与材料改性教育部重点实验室,北京市100875

出　　处：《中国组织工程研究与临床康复》2008年第41期8183-8188,共6页Journal of Clinical Rehabilitative Tissue Engineering Research

基　　金：the Co-operation Programs of Beijing Education Committee,No XK100270454~~

摘　　要：孔径及其分布显著地影响着多孔体的透过性、渗透速率、过滤性等一系列的性能。本文介绍多孔材料孔径及其分布的常用测定方法,包括断面直接观测法、气泡法、透过法、压汞法、气体吸附法、液-液法、悬浮液过滤法、X射线小角度散射法等,并对几种测量方法进行了比较。多孔材料的孔道形状复杂,影响孔径测量的因素也会很多,因此要根据所测材料的结构特性选择合适的方法,并充分考虑到其中的误差。The aperture and its distribution have remarkable influence on permeation behavior, infiltration rate and filtration character of porous bodies. In this paper, the methods in common use for determining the aperture and its distribution of porous materials are introduced, including the direct observation from cross-section, the gas-bubble method, the permeation method, the mercury method, the gas-adsorption method, the liquid-liquid method, the suspension-filtration method, the X-ray small-angle scattering method, etc. And several measuring methods are compared with one another. Considering the complexity of apertures and various influence factors in the determining of aperture, it is important to determine the proper method according to the structure characteristic of the material, moreover, the test error must be considered.

关 键 词：多孔材料 泡沫材料 检测方法 

分 类 号：R318.08[医药卫生—生物医学工程]