Preparation and characterisation of composites based on biodegradable polymers for "in vivo" application

被引：59
作者：
Calandrelli, L
Immirzi, B
Malinconico, M
Volpe, MG
Oliva, A
Della Ragione, F
机构：
[1] CNR, Ist Ric Tecnol Mat Plast, I-80072 Arco, NA, Italy
[2] Seconda Univ Napoli, Ist BIochim Macromol, I-80138 Naples, Italy
来源：
POLYMER | 2000年 / 41卷 / 22期
关键词：
poly(L-lactic) acid (PLLA); polycaprolactone (PCL); poly(L-lactic)-co-polyglycolic acid copolymers (PLLA-co-PGA);
D O I：
10.1016/S0032-3861(00)00165-8
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Poly(L-lactic) acid (PLLA), polycaprolactone (PCL), three different copolymers based on poly(L-lactic) acid and polyglycolic acid (PLLA-co-PGA), and their composites with hydroxyapatite obtained from bovine bone (ossein), were tested in order to have information on the thermal, morphological, mechanical and biochemical properties in view of their use as biocompatible/biodegradable materials. Ossein, which is essentially a biological hydroxyapatite, was found to improve the modulus and increase the hydrophilicity of the polymeric substrate. In addition, the size of the ossein particles was found to be critical for the improvement of mechanical properties. Finally, preliminary results on the in vitro biocompatibility of selected blends carried out by using primary cultures of human osteoblasts showed that the presence of hydroxyapatite stimulates a more positive cellular response. (C) 2000 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：8027 / 8033
页数：7
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