The effect of soft segment structure on in vitro biodegradation of segmented polyurethanes
سال انتشار: 1397
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 412
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شناسه ملی سند علمی:
ITERMED01_148
تاریخ نمایه سازی: 7 مرداد 1398
چکیده مقاله:
IntroductionSegmented polyurethanes (SPUs) are extensively employed in the field of biomaterials, due to their excellent and tunable physicochemical properties.ObjectivesIn this study, two series of polyurethanes based on block and random (glycolide-co-ε-caprolactone) (PGC) macro-diols with glycolide to ε-caprolactone (GA:CL) ratios of (50:50 (PU-50) and 30:70 (PU-30)) were synthesized.MethodsThe effect of macro-diols’ structure on in vitro biodegradation profile of the polymers (in PBS, at 37°C for 2 months) were investigated, via FTIR and SEM. Also, mass loss of the polymers in this period was calculated.ResultsThe results of mass loss measurement showed that as amount of glycolide monomer increased in the soft segment structure, biodegradation rate of the polymers increased. The highest mass loss of about 40% was registered for PU-50. Also FTIR results showed that the degradation mechanism of these polymers was mainly hydrolytic degradation
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نویسندگان
Mojgan Moghanizadeh-Ashkezari
Biomaterials Deptment, Iran Polymer and Petrochemical Institute, Tehran, Iran
Parvin Shokrollahi
Biomaterials Deptment, Iran Polymer and Petrochemical Institute, Tehran, Iran
Mojgan Zandi
Biomaterials Deptment, Iran Polymer and Petrochemical Institute, Tehran, Iran
Fatemeh Shokrolahi
Biomaterials Deptment, Iran Polymer and Petrochemical Institute, Tehran, Iran