2001
DOI: 10.1590/s0102-09352001000600015
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Estudo experimental do poliuretano de óleo de mamona (Ricinus communis) como substituto parcial do tendão calcâneo comum em coelhos (Oryctolagus cuniculus)

Abstract: Estudo experimental do poliuretano de óleo de mamona (Ricinus communis) como substituto parcial do tendão calcâneo comum em coelhos (Oryctolagus cuniculus) [ RESUMOCom o objetivo de avaliar a eficiência da prótese de poliuretano de mamona como substituto parcial do tendão calcâneo comum, foram utilizadas 30 coelhas da raça Nova Zelândia, entre dois e três meses de idade e peso médio de 2kg. Após anestesia geral, o procedimento cirúrgico em ambos os membros constou de incisão caudo-lateral no sentido longitudi… Show more

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Cited by 10 publications
(5 citation statements)
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References 9 publications
(11 reference statements)
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“…The transformations observed in thermograms are nothing but alteration in polymeric chains behaviour when exposed to thermal variations. With that in mind, the crystalline melting temperature of polymers is observed by a peak formation, as shown at 149.45°C on PLGA curve . It is known as the temperature in which the system acquires enough energy to overcome secondary intermolecular forces between crystalline phase chains, affecting the consistent packing structure and conducing the material to a more viscous state .…”
Section: Resultsmentioning
confidence: 99%
See 1 more Smart Citation
“…The transformations observed in thermograms are nothing but alteration in polymeric chains behaviour when exposed to thermal variations. With that in mind, the crystalline melting temperature of polymers is observed by a peak formation, as shown at 149.45°C on PLGA curve . It is known as the temperature in which the system acquires enough energy to overcome secondary intermolecular forces between crystalline phase chains, affecting the consistent packing structure and conducing the material to a more viscous state .…”
Section: Resultsmentioning
confidence: 99%
“…With that in mind, the crystalline melting temperature of polymers is observed by a peak formation, as shown at 149.458C on PLGA curve. 47 It is known as the temperature in which the system acquires enough energy to overcome secondary intermolecular forces between crystalline phase chains, affecting the consistent packing structure and conducing the material to a more viscous state. 48 This transition is characteristic of semi-crystalline polymers, and is absent in amorphous materials.…”
Section: Polymer Thermochemical Propertiesmentioning
confidence: 99%
“…In polyurethane polymerization, a compound containing two or more isocyanate groups per molecule reacts with a polyol or a polyfunctional alcohol [5]. Castor oil, obtained from the castor seed of Ricinus communis [11], is one of the most important renewable resources for the production of many industrial polymers. Their unusual composition and chemistry promotes valuable applications, including preparation of polyurethanes [12,13].…”
Section: Introductionmentioning
confidence: 99%
“…The cells were isolated from the bone marrow of clinically healthy rabbits, characterized by Silva et al [1] and used in this study in the third and fourth passages. Castor PU scaffolds were sterilized [15,16] in an autoclave and cultured with MSC in Minimal Essential Medium α (α-MEM) culture medium in a humidified incubator (TE-399, TECNAL) at 37 • C, 5% CO 2 and 95% humidity.…”
Section: In Vitro Cell Culture Tests 231 Cell Culturementioning
confidence: 99%