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• W1997289196 abstract "A family of high molecular weight castor oil (CO)-based biodegradable polyanhydrides was synthesized by a catalyst-free melt–condensation reaction between prepolymers of CO and sebacic acid (SA). The structure of the polymers was characterized by 1H NMR and Fourier transform infrared spectroscopy, which indicated the formation of the anhydride bond along the polymer backbone. Thermal analysis and X-ray diffraction confirmed the semicrystalline nature of the polymers. Incorporation of SA enhanced the crystallinity of the polymer. The hydrophobic nature of these polymers was revealed by contact angle goniometry. Water wettability decreased with increase in SA content. Compressive tests demonstrated a sharp increase in strength and decrease in ductility with increasing SA content. In vitro hydrolytic degradation studies indicated surface-eroding behavior. The degradation rate decreased with an increase of SA content in the polymers because of increased crystallinity. The release studies of both hydrophobic and hydrophilic dyes followed zero-order kinetics. In vitro cell studies to assess the cytotoxicity of the polymer confirmed minimal toxicity of the degradation products. Thus, a family of CO-SA polyanhydrides have been synthesized and characterized for controlled release applications where the physical, mechanical, and degradation kinetics can be modulated by varying the weight fraction of the prepolymers." @default.
• W1997289196 created "2016-06-24" @default.
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• W1997289196 date "2014-04-25" @default.
• W1997289196 modified "2023-10-17" @default.
• W1997289196 title "Polyanhydrides of Castor Oil–Sebacic Acid for Controlled Release Applications" @default.
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• W1997289196 doi "https://doi.org/10.1021/ie500679u" @default.
• W1997289196 hasPublicationYear "2014" @default.
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