Preparation and Characterization of Hydroxyapatite-Poly(Vinyl Alcohol) Composites Reinforced with Cellulose Nanocrystals

被引：0
作者：
Wei, Wenbang [1 ,2 ,3 ,4 ]
Song, Wei [1 ,2 ,3 ]
Zhang, Shuangbao [1 ,2 ,3 ]
机构：
[1] Beijing Forestry Univ, Coll Mat Sci & Technol, MOE Key Lab Wooden Mat Sci & Applicat, Beijing 100083, Peoples R China
[2] Beijing Forestry Univ, Coll Mat Sci & Technol, Beijing Key Lab Wood Sci & Engn, Beijing 100083, Peoples R China
[3] Beijing Forestry Univ, Coll Mat Sci & Technol, MOE Engn Res Ctr Forestry Biomass Mat & Bioenergy, Beijing 100083, Peoples R China
[4] Guangxi Ecoengn Vocat & Tech Coll, Liuzhou 545004, Peoples R China
来源：
BIORESOURCES | 2014年 / 9卷 / 04期
关键词：
Preparation and characterization; HAp/PVA composite gels; Cellulose nanocrystals; Reinforcement; Articular cartilage repair; MECHANICAL-PROPERTIES; ARTICULAR-CARTILAGE; IN-VIVO; HYDROGEL; NANOCOMPOSITE; SCAFFOLDS; POLYMERS; WHISKERS;
D O I：
10.15376/biores.9.4.6087-6099
中图分类号：
TB3 [工程材料学]; TS [轻工业、手工业、生活服务业];
学科分类号：
0805 ; 080502 ; 0822 ;
摘要：
Hydroxyapatite/poly(vinyl alcohol) (Hap/PVA) composites have been proposed as a promising biomaterial for use in articular cartilage repair. In this study, HAp/PVA composite gels reinforced with cellulose nanocrystals (CNC) were prepared using the freeze/thaw method. The influence of CNC as a reinforcement on the structure of composite gels was investigated via Fourier transform infrared spectroscopy (FT-IR), Xray powder diffraction (XRD), and scanning electron microscopy (SEM). The mechanical properties and thermal stability of the composite gels were also studied. The FT-IR and XRD results indicated that the HAp/PVA/CNC composite gels were formed by hydrogen bonding. SEM morphology showed that the CNC served as an enhancement phase that interpenetrated the network of the HAp/PVA composite gels. The tensile strength and tensile modulus of the composites improved with increasing dosage of CNC. The thermal stability measurements indicated that the thermal stability of the HAp/PVA composites was slightly improved with the addition of the CNC.
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页码：6087 / 6099
页数：13
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