NDLI: Synthesis, characterizations, and biocompatibility of block poly(ester-urethane)s based on biodegradable poly(3-hydroxybutyrate-co-4-hydroxybutyrate) (P3/4HB) and poly(Îµ-caprolactone).

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Synthesis, characterizations, and biocompatibility of block poly(ester-urethane)s based on biodegradable poly(3-hydroxybutyrate-co-4-hydroxybutyrate) (P3/4HB) and poly(Îµ-caprolactone).

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Qiu, Handi Li, Dandan Chen, Xi Fan, Kaiyan Ou, Wenfeng Chen, Kevin C. Xu, Kaitian
Description	Country affiliation: China Author Affiliation: Qiu H ( Multidisciplinary Research Center, Shantou University, Shantou, Guangdong 515063, China.)
Abstract	A type of block poly(ester-urethane)s (abbreviated as PUBC) based on bacterial copolyester poly(3-hydroxybutyrate-co-4-hydroxybutyrate) (P3/4HB) and biodegradable poly(Îµ-caprolactone) (PCL) was synthesized by melting polymerization using 1,6-hexamethylene diisocyanate (HDI) as the coupling agent, with different 3HB, 4HB and PCL contents and segment lengths. Stannous octanoate (Sn(Oct)(2)) was used as catalyst. The chemical structure, molecular weight and thermal property were characterized by (1)H NMR, FTIR GPC, DSC and TGA. DSC analysis revealed that the PUBC polyurethanes exhibit amorphous to semi-crystalline (20.9% crystallinity degree) with T(g) range from -39.7 to -21.5 °C. The hydrophilicity was investigated by static contact angle of deionized water and CH(2)I(2). The obtained PUBCs are hydrophobic (water contact angle 73.7-90.2°). Platelet adhesion study and plasma recalcification time revealed that the block polyurethanes possess hemastasis ability. CCK-8 assay illuminated that the no cytotoxic polyurethanes maintain rat aortic smooth muscle cells (RaSMCs) good viability. It was found that the 4HB content in the materials is an important factor to affect the sustainable cell viability.
File Format	HTM / HTML
ISSN	15493296
Issue Number	1
Volume Number	101
e-ISSN	15524965
Journal	Journal of Biomedical Materials Research Part A
Language	English
Publisher	Wiley
Publisher Date	2013-01-01
Publisher Place	United States
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Platelet Adhesiveness Research Support, Non-u.s. Gov't Cell Proliferation Molecular Weight Cytology Spectroscopy, Fourier Transform Infrared Journal Article Hydroxybutyrates Thermodynamics Ultrastructure Surface Properties Polyesters Biodegradation, Environmental Rabbits Magnetic Resonance Spectroscopy Cell Survival Blood Platelets Thermogravimetry Rats Materials Testing Chemical Synthesis Pharmacology Polyurethanes Drug Effects Discipline Biomedical Engineering Chemistry Animals Myocytes, Smooth Muscle Biocompatible Materials Calorimetry, Differential Scanning Chromatography, Gel
Content Type	Text
Resource Type	Article
Subject	Ceramics and Composites Metals and Alloys Biomaterials Biomedical Engineering

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