PMID- 32763389 OWN - NLM STAT- MEDLINE DCOM- 20210423 LR - 20210423 IS - 1879-0003 (Electronic) IS - 0141-8130 (Linking) VI - 164 DP - 2020 Dec 1 TI - Biodegradability in aquatic system of thin materials based on chitosan, PBAT and HDPE polymers: Respirometric and physical-chemical analysis. PG - 1399-1412 LID - S0141-8130(20)34068-X [pii] LID - 10.1016/j.ijbiomac.2020.07.309 [doi] AB - Biodegradation tests of chitosan (CH), polybutylene adipate terephthalate (PBAT) and high density polyethylene (HDPE) polymers were carried out using the standard OECD 301D guidelines. The results showed that the CH samples biodegraded faster than those of PBAT. Photographs registered exhibited the complete or partial disintegration of the samples, and a more opaque color was observed with the increase of biodegradation. FTIR analysis showed some changes in the intensity of the typical bands of the HDPE sample. The presence of P. nitroreducens bacteria was revealed on the PBAT sample surface by SEM studies. Additionally, a clear increase in elastic modulus (EM) and tensile strength (TS) values were observed in PBAT and HDPE samples on day 3, which decreased significantly at the end of the study. Furthermore, an increase in the crystallinity of the HDPE sample was observed on day 28. CI - Copyright (c) 2020 Elsevier B.V. All rights reserved. FAU - Bonilla, Jeannine AU - Bonilla J AD - Faculty of Animal Science and Food Engineering, University of Sao Paulo, Av. Duque de Caxias Norte, 225, 13635-900 Pirassununga, SP, Brazil; Food Research Center (FoRC), University of Sao Paulo, Rua do Lago, 250, Semi-industrial building, block C, 05508-080, Sao Paulo, SP, Brazil. Electronic address: jeanninebonilla@usp.br. FAU - Paiano, Renan B AU - Paiano RB AD - Department of Animal Reproduction, School of Veterinary Medicine and Animal Sciences, University of Sao Paulo, Sao Paulo, Brazil. FAU - Lourenco, Rodrigo V AU - Lourenco RV AD - Faculty of Animal Science and Food Engineering, University of Sao Paulo, Av. Duque de Caxias Norte, 225, 13635-900 Pirassununga, SP, Brazil. FAU - Bittante, Ana Monica Q B AU - Bittante AMQB AD - Faculty of Animal Science and Food Engineering, University of Sao Paulo, Av. Duque de Caxias Norte, 225, 13635-900 Pirassununga, SP, Brazil. FAU - Sobral, Paulo J A AU - Sobral PJA AD - Faculty of Animal Science and Food Engineering, University of Sao Paulo, Av. Duque de Caxias Norte, 225, 13635-900 Pirassununga, SP, Brazil; Food Research Center (FoRC), University of Sao Paulo, Rua do Lago, 250, Semi-industrial building, block C, 05508-080, Sao Paulo, SP, Brazil. LA - eng PT - Journal Article DEP - 20200805 PL - Netherlands TA - Int J Biol Macromol JT - International journal of biological macromolecules JID - 7909578 RN - 0 (Adipates) RN - 0 (Polyesters) RN - 0 (Polymers) RN - 0 (poly(butylene adipate-co-butylene terephthalate)) RN - 9002-88-4 (Polyethylene) RN - 9012-76-4 (Chitosan) RN - S88TT14065 (Oxygen) SB - IM MH - Adipates MH - *Biodegradation, Environmental MH - Chitosan/*chemistry MH - Elastic Modulus MH - Materials Testing MH - Microscopy, Electron, Scanning MH - Molecular Weight MH - Nanocomposites MH - Oxygen/chemistry MH - Polyesters/*chemistry MH - Polyethylene/*chemistry MH - Polymers/*chemistry MH - Pressure MH - Spectroscopy, Fourier Transform Infrared MH - Stress, Mechanical MH - Temperature MH - Tensile Strength OTO - NOTNLM OT - Aquatic system OT - Biodegradation OT - Respirometric analysis EDAT- 2020/08/09 06:00 MHDA- 2021/04/24 06:00 CRDT- 2020/08/09 06:00 PHST- 2020/05/25 00:00 [received] PHST- 2020/07/24 00:00 [revised] PHST- 2020/07/29 00:00 [accepted] PHST- 2020/08/09 06:00 [pubmed] PHST- 2021/04/24 06:00 [medline] PHST- 2020/08/09 06:00 [entrez] AID - S0141-8130(20)34068-X [pii] AID - 10.1016/j.ijbiomac.2020.07.309 [doi] PST - ppublish SO - Int J Biol Macromol. 2020 Dec 1;164:1399-1412. doi: 10.1016/j.ijbiomac.2020.07.309. Epub 2020 Aug 5.