Journal
INDUSTRIAL CROPS AND PRODUCTS
Volume 97, Issue -, Pages 599-611Publisher
ELSEVIER
DOI: 10.1016/j.indcrop.2016.12.064
Keywords
Poly (butylene succinate); Chain extenders; Rutin; Castor oil; Silybin
Categories
Funding
- Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq)
- Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior (CAPES)
- Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior (CAPES-NANOBIOTEC)
- Financiadora de Estudos e Projetos (FINEP PRESAL) [1889/10]
- Fundagao Carlos Chagas Filho de Amparo a Pesquisa do Estado do Rio de Janeiro (FAPERJ)
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Poly (butylene succinate) (PBS) is a biodegradable polyester, which can be obtained from renewable sources. The chain extension technique was used, aiming to promote an increase in the molecular weight of PBS, besides improving its thermal, mechanical and rheological properties. To the best of our knowl-edge, the use of rutin as a natural chain extender has never been tested. In addition, this chain extension was compared to the ordinary one, using castor oil. Thus, the present work aimed to prepare and compare the properties of PBS extended by the addition of these mentioned chain extenders. In addition, different reaction conditions were tested and the obtained results allowed us to infer that both chain extenders produced an increase of molecular weight, viscosity and thermal resistance. In spite castor oil be a more efficient chain extender, the use of a small amount of rutin (1 wt%) produced an increase in the viscosity of PBS of around 100%. In addition, the molecular weight increased by 36% and the crystallinity presented a reduction of 7%. In addition, the polymer modified with rutin was tested as a silybin release system. The material extended using rutin was able to reduce the release of silybin, in comparison to the one from PBS, in 25.7%. (C) 2017 Elsevier B.V. All rights reserved.
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