期刊
ACS BIOMATERIALS SCIENCE & ENGINEERING
卷 2, 期 9, 页码 1471-1482出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsbiomaterials.6b00202
关键词
high-pressure compression molding plus salt leaching; porous composite scaffold; high modulus; cranial bone regeneration
资金
- Program of the National Natural Science Foundation of China [51120135002, 51421061, 51303174, 51273196, 51533004, 51321062]
- Polylactide Biodegradable Materials Innovation Center of Jilin Province [20160623026TC]
- Training Program of Outstanding Doctoral Students of Jilin University [YB201501]
Fabricating porous scaffolds with sufficient mechanical properties is a challenge for healing bone defects. High-pressure compression-molded (HPCM) porous composite scaffold comprising poly(L-lactide) (PLLA), poly(lactide-co-glycolide) (PLGA), and hydroxyapatite (HA) was prepared and showed upregulated mechanical properties due to a solid network structure and a highly ordered crystalline architecture. The compressive yield strength and modulus of the HPCM scaffold molded at 1000 MPa and 180 degrees C were 0.91 and 6.84 MPa, respectively. The HPCM scaffold also exhibited an interconnected porous architecture with porosity greater than 80%, an appropriate degradation rate, and enhanced cell proliferation. Moreover, the HPCM scaffold supported the healing of a rat calvarial defect in vivo.
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