Preparation of polyurethane/polyhedral oligomeric silsesquioxane nanocomposite fibers

doi:10.3969/j.issn.2095-4344.2015.52.019

Abstract

Abstract:

BACKGROUND: Although polyurethane possesses excellent biocompatibility, its inherent inertness leads to its weak interactions with cells. So, its modification is necessary.
OBJECTIVE: To prepare the polyurethane/polyhedral oligomeric silsesquioxane nanocomposite fibers with controllable morphology.
METHODS: The polyhedral oligomeric silsesquioxane was dispersed in a certain concentration of polyurethane solution to prepare the polyurethane/polyhedral oligomeric silsesquioxane nanocomposite fibers using electrospinning method. Meanwhile, the effects of mass of polyurethane and oligomeric silsesquioxane, spinning voltage and spinning advance velocity on composite fiber morphology were analyzed. The optimum preparing conditions were filtrated. The stability of oligomeric silsesquioxane in polyurethane was determined. The morphology and composition of fibers were analyzed by scanning electron microscopy, infrared spectroscopy, X-ray photoelectron spectroscopy.
RESULTS AND CONCLUSION: Oligomeric silsesquioxane stably existed in polyurethane. Polyurethane/polyhedral oligomeric silsesquioxane nanocomposite fibers were the most uniform when the mass fraction of polyurethane in composite fibers accounted for 20%, the mass ratio of polyurethane and oligomeric silsesquioxane was 10: 1, spinning voltage was 15 kV and spinning advance velocity was 0.5 mL/h. Compared with the pure polyurethane, the O/C ratio of polyurethane/polyhedral oligomeric silsesquioxane nanocomposites increased significantly.
中国组织工程研究杂志出版内容重点：生物材料；骨生物材料; 口腔生物材料; 纳米材料; 缓释材料; 材料相容性；组织工程

CLC Number:

R318

Xiao Rong-dong, Weng Guo-xing. Preparation of polyurethane/polyhedral oligomeric silsesquioxane nanocomposite fibers[J]. Chinese Journal of Tissue Engineering Research, 2015, 19(52): 8467-8472.

Figures/Tables 8

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