CASTRO, DIONE P. deGARCIA, RAFAEL H.L.SILVA, LEONARDO G. de A. e2020-10-192020-10-192020CASTRO, DIONE P. de; GARCIA, RAFAEL H.L.; SILVA, LEONARDO G. de A. e. Characterization using X-ray diffraction and study of the crystallinity of the thermoplastic starch/poly(butylene adipate-co-terephthalate) blends irradiated by gamma rays. <b>Brazilian Journal of Development</b>, v. 6, n. 3, p. 9635-9643, 2020. DOI: <a href="https://dx.doi.org/10.34117/bjdv6n3-005">10.34117/bjdv6n3-005</a>. Disponível em: http://repositorio.ipen.br/handle/123456789/31453.2525-8761http://repositorio.ipen.br/handle/123456789/31453The aim of this study was to analyze the changes in the structure and crystallinity of non-irradiated and irradiated thermoplastic starch blends (TPS)/poly (butylene adipate-co-terephthalate) - PBAT and also to evaluate the behavior of castor oil replacing glycerol. In this work, the characterization was performed by using X-ray diffraction (XRD), in which the crystallinity index (IC) of non-irradiated and irradiated blends of TPS/PBAT was calculated, through the software Bruker DIFFRAC.EVA® v4.22. For the plastification of the TPS, glycerol, castor oil and TWEEN® 80 were used to verify their compatibility and establish a comparison among the blends. The samples were prepared by extrusion and irradiated at 25 kGy with gamma rays with a 60Co source. However, the crystallinity indexes of the blends were altered according to the plasticizer used and the use of TWEEN® 80. Thus, it was concluded that replacing glycerol with castor oil is feasible in TPS/PBAT blends.9635-9643openAccesscrystalline lensx-ray diffractionmixingstarchpolysaccharidescastor oilcobalt 60comparative evaluationsgamma radiationglycerolirradiationmixingplasticizersstarchthermoplasticsArtigo de periódico3610.34117/bjdv6n3-005https://orcid.org/0000-0002-7968-2117https://orcid.org/0000-0002-3602-6857Sem PercentilSem Percentil CiteScore