Effect of the crystallization of bioactive glass reinforcing agents on the mechanical properties of polymer composites

被引:25
作者
Peitl, O
Oréfice, RL
Hench, LL
Brennan, AB
机构
[1] Univ Fed Minas Gerais, Dept Met & Mat Engn, Lab Polymer & Composite Engn, LEPCom, BR-30160030 Belo Horizonte, MG, Brazil
[2] Univ Fed Sao Carlos, BR-13560 Sao Carlos, SP, Brazil
[3] Univ London Imperial Coll Sci Technol & Med, Dept Mat Sci, London, England
[4] Univ Florida, Dept Mat Sci & Engn, Gainesville, FL 32611 USA
来源
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2004年 / 372卷 / 1-2期
关键词
composites; glass-ceramic particles; crystallization;
D O I
10.1016/j.msea.2004.01.011
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
Polymer composites based on the introduction of bioactive materials into polymer matrices can combine mechanical with bioactive properties suitable for many potential biomedical applications. In this work, glass-ceramics derived from the crystallization of bioactive glasses were tested as reinforcing agents in polymer composites. The kinetics of crystallization of soda-lime silica glasses containing phosphorous was studied to define conditions for obtaining glass-ceramics having different microstructures. This type of glass can be used in biomedical applications due to its ability to bind to bone (bioactive behavior). Evaluation of the mechanical properties of glass-ceramic bodies derived from bioactive glasses has allowed us to determine the relationship between microstructure and properties. A particular microstructure capable of leading to fine grained glass-ceramics with enhanced properties was then reproduced in bioactive glass particles. Thus, bioactive glass particles were crystallized to different levels and used as reinforcing agents in polymer (polysulfone) composites. Mechanical properties of composites were evaluated using a four-point bending test. Glass-ceramic reinforced composites showed higher elastic modulus than glass reinforced composites. Therefore, crystallization of silicate glasses used as reinforcing agents in polymer matrices is a possible way to enhance the mechanical properties of composites. Polymer composites having bioactive glass-ceramic particles display some mechanical properties comparable to human cortical bone. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码:245 / 251
页数:7
相关论文
共 15 条
[1]  
DEHOFF RT, 1961, T METALL SOC AIME, V221, P975
[2]   A GENERALIZED LAW OF MIXTURES [J].
FAN, Z ;
TSAKIROPOULOS, P ;
MIODOWNIK, AP .
JOURNAL OF MATERIALS SCIENCE, 1994, 29 (01) :141-150
[3]   Third-generation biomedical materials [J].
Hench, LL ;
Polak, JM .
SCIENCE, 2002, 295 (5557) :1014-+
[4]   The challenge of orthopaedic materials [J].
Hench, LL .
CURRENT ORTHOPAEDICS, 2000, 14 (01) :7-15
[5]   Biocompatible and bioactive glass-ceramics - state of the art and new directions [J].
Holand, W .
JOURNAL OF NON-CRYSTALLINE SOLIDS, 1997, 219 :192-197
[6]   STATIONARY AND NONSTATIONARY CRYSTAL NUCLEATION RATE IN A GLASS OF 2NA2O.CAO.3SIO2 STOICHIOMETRIC COMPOSITION [J].
KALININA, AM ;
FILIPOVICH, VN ;
FOKIN, VM .
JOURNAL OF NON-CRYSTALLINE SOLIDS, 1980, 38-9 (MAY-) :723-728
[7]   Novel bioactive materials with different mechanical properties [J].
Kokubo, T ;
Kim, HM ;
Kawashita, M .
BIOMATERIALS, 2003, 24 (13) :2161-2175
[8]  
MALLICK RK, 1993, FIBER REINFORCED COM
[9]  
Oréfice RL, 2001, J BIOMED MATER RES, V55, P460, DOI 10.1002/1097-4636(20010615)55:4<460::AID-JBM1037>3.0.CO
[10]  
2-3