摘要
通过凝胶纺丝法制备具有生物相容性的纳米羟基磷灰石/聚乙烯醇(n-HAP/PVA)共混复合纤维.将硅烷偶联剂修饰后的n-HAP均匀分散在PVA溶液中,制得一系列不同n-HAP质量分数的n-HAP/PVA共混复合纤维.用哈克流变仪研究了n-HAP/PVA纺丝原液的流变性能,n-HAP/PVA纺丝原液呈现非牛顿流体的特性,其剪切黏度随n-HAP质量分数的增加而增加.在傅里叶变换红外光谱(FT-IR)中可以看出n-HAP与PVA之间存在明显的氢键相互作用力,通过扫描电子显微镜(SEM)观察到n-HAP均匀地分散在PVA基体中,加入适量的n-HAP对共混复合纤维的热学性能和断裂强度都有一定的提高.
Biocompatible nano-hydroxyapatite/poly （vinyl alcohol） （ re HAP/PVA ） blend composition fibers were prepared by mixed-gel spinning, n-HAP particles were modified by silane coupling agent and different content of n-HAP were mixed in PVA uniformly, then nHAP/PVA blend composite fibers were prepared. HAKKE rheometer was used to eluddate the shear viscosities of n-HAP/PVA spinning dopes, n-HAP/PVA spinning dopes showed non-Newtonian flow behaviors, and the shear viscosities increased simultaneously as the n-HAP content increased. Fourier Transform Infrared Spectroscopy （FT-IR） figures showed that hydrogen bond was significantly increased between n-HAP and PVA. Through Scanning Electronic Microscopy （SEM）, n-HAP particles uniformly dispersed in the PVA matrix was observed. A proper amount of n-HAP in the PVA fibers improved the thermal and mechanical properties of the blend composite fibers.
出处
《东华大学学报（自然科学版）》
CAS
CSCD
北大核心
2009年第3期250-255,263,共7页
Journal of Donghua University(Natural Science)
